i30 Owners Club

THE GARAGE (SERVICE, MAINTENANCE & REPAIR) => TECHNICAL INFO => Topic started by: AlanHo on April 13, 2012, 15:48:50

Title: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 13, 2012, 15:48:50
I would appreciate help from one of our kind members who runs a 2010 or 2011 i30 diesel with a 6 speed manual box and a sat-nav which displays the car speed.

I would like to compare gear ratios with the new car. Why? - because my new car feels higher geared - but it may simply be an illusion because the engine is still tight.

What I would appreciate is someone to run their car at exactly 2000 rpm in each gear and note down the car's exact speed as shown on the sat-nav - not on the car's speedo, which is not usually dead accurate.  I also need your tyre size.


I will then produce a table comparing both models.

My car - 2012 Style 1.6 CRDi 128PS
Tyres 205 55 R16

Speeds at 2000 rpm in km/hr  18  32  56  79  93  111
Sppeds at 2000 rpm in mph    11  20  35  49  58   69

PS
If others with different car specs wish to participate - that would be a bonus. I could then produce a table showing the car speed per 1000 rpm for each model that is submitted. It all adds to our i30 data base.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Dazzler on April 13, 2012, 21:45:34
Good idea Alan.. The first candidate that comes to mind would be Lakes (John) he fits your description..

 If no one else responds or John doesn't see this it might be worth a PM (John usually only come on very early our time - before he goes to work) 
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 16, 2012, 02:07:12
BUMP

Come on guys - one of you must have a 6 speed manual diesel and a sat-nav........ :TutTut: :needhelp: :honk: :Prayer:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 16, 2012, 05:41:54
'Twas thinking about this yesterday as I was driving but I didn't have a pen and paper handy, and of course I only have a 5 speed.  :confused:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 16, 2012, 07:10:10
 :whsaid:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 16, 2012, 07:10:10
Well, I went for another drive and here's what I came up with:  :D

1st - 15kph
2nd - 28kph
3rd - 48kph
4th - 67kph
5th - 85kph

Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 16, 2012, 08:27:12
Thanks Russ - you are a kind gent. Now to find someone with a 6 speeder............. :Prayer:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 18, 2012, 05:45:17
Mine's a diesel 5 speed and my readings as per my SatNav were:

1st:   15 km/h
2nd:  29 km/h
3rd:   49 km/h
4th:   68 km/h
5th:   88 km/h

Dave  :)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Dazzler on April 20, 2012, 12:24:55
I'll PM lakes with a link to this thread .. this is right up his alley

Can anyone else think of a 6 speed owner who uses a GPS and is a regular visitor (Is so please PM them a link)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 20, 2012, 12:27:36
Alan, I can't find it now, but did you get my results that I posted with my 5 speed?
I know you want 6 speed results but thought I'd at least give you those.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 20, 2012, 12:52:55
Alan, I can't find it now, but did you get my results that I posted with my 5 speed?
I know you want 6 speed results but thought I'd at least give you those.

Sorry Dave - I cannot see it in the thread - did you post it elsewhere?
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 20, 2012, 13:23:00
I thought (I'm sure  :undecided:) I posted it in your original request thread.

Maybe the gremlins are at work again. Didn't someone else post the results for a five speed too?  :confused:

Anyhow, I'll post it again. These are at 2000 rpm, speeds from SatNav.

1st:     15 km/h
2md:   29 km/h
3rd:    49 km/h
4th:    68 km/h
5th:    88 km/h.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 20, 2012, 13:30:00
'Twas me that posted the other one, Dave and I'm buggered if I can find them now....  :undecided:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 20, 2012, 13:34:07
Spooky  :scared:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 20, 2012, 13:37:17
Not guilty m'lord.

Dave - is your car a 1.6 or 2.0 litre?
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 20, 2012, 13:37:54
Lucky I still have the piece of paper I wrote them on..... :D

1st - 15kph
2nd - 28kph
3rd - 48kph
4th - 67kph
5th - 85kph

I might check fifth again as I did this on a hilly back road...... :)
Edit: just checked and all's good.... :goodjob:

205/55/16 Tyres.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 20, 2012, 13:41:58
Thanks guys.

Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on April 20, 2012, 13:42:50
Could be useful to include wheel/tyre size.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 20, 2012, 13:43:35
Seems like the Gremlins are back....I wonder what other posts have gone walkabout?  :undecided:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 20, 2012, 13:44:07
Could be useful to include wheel/tyre size.

Good thinkin', 99..... :goodjob:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 20, 2012, 15:16:23
Not guilty m'lord.

Dave - is your car a 1.6 or 2.0 litre?

1.6 diesel.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: asathorny on April 20, 2012, 15:40:28
Alan, I am unable to help you on this research BUT, and I have to say before I make a fool of myself here that I fully expect to be shot down in flames, BUT,  since the speedo is less than reliable (mine is bout 3 MPH fast) what makes you think that the rev counter is any better ????

Not that I want to throw a damper on your excellent research, from which we all benefit me included.

Just a thought for you to factor in or disregard as is your wont.

Kind regards
Asa
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Shambles on April 20, 2012, 16:19:45
Seems like the Gremlins are back....I wonder what other posts have gone walkabout?  :undecided:

None, hopefully. I "invisibilised" the 5-speed posts as they seemed irrelevant to what Alan was desperately asking for. Ah well, they're "uninvisibilised" now  :cool:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 20, 2012, 17:22:03
Seems like the Gremlins are back....I wonder what other posts have gone walkabout?  :undecided:

None, hopefully. I "invisibilised" the 5-speed posts as they seemed irrelevant to what Alan was desperately asking for. Ah well, they're "uninvisibilised" now  :cool:

So you didn't read this part of Alan's original post then, Steve.....   :p

Quote
If others with different car specs wish to participate - that would be a bonus. I could then produce a table showing the car speed per 1000 rpm for each model that is submitted. It all adds to our i30 data base.

Me thinks you can go stand in the naughty corner now...  :razz:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Shambles on April 20, 2012, 18:25:07
So you didn't read this part of Alan's original post then, Steve.....   :p

My mistake entirely  :-[

Been spending far too much time on the new theme options  :wacko:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 20, 2012, 19:55:55
Alan, I am unable to help you on this research BUT, and I have to say before I make a fool of myself here that I fully expect to be shot down in flames, BUT,  since the speedo is less than reliable (mine is bout 3 MPH fast) what makes you think that the rev counter is any better ????

Not that I want to throw a damper on your excellent research, from which we all benefit me included.

Just a thought for you to factor in or disregard as is your wont.

Kind regards
Asa

ASA  - it had not escaped my thoughts ( great minds thing alike) - but I guess the rev counter stands more chance of being accurate than the speedo which has got tyre rolling radius and slippage to contend with and a safety factor tweak built in by the manufacturer. I started the thread because my new car - though more powerful than the last - feels less lively in the higher gears and I wondered whether the gear ratios had been lifted in the interest of squeezing the lowest emissions out of the government tests. It might be because the engine is still tight - only time will tell.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: asathorny on April 20, 2012, 21:21:34
Yeppers Alan, I should have known you'd have factored it in <sigh>...   And yes it probably is a tad more reliable  :P...

I'll just keep and eye out so you don't miss anything  :rofl: :rofl: :rofl: :rofl:

I quite fancy the new i30 but at the moment I am impecunious but it's on my bucket list  :goodjob: :goodjob: :goodjob:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 21, 2012, 02:23:53
Alan, for a while now I've been wondering why you just didn't compare the gear ratios that are listed in the specifications of the new and old i30's.....  :undecided:

I've now found out why, I'm buggered if I can find any gear ratios listed for the new generation i30....:eek:

Are they shown in your manual? 

Anyhow, here are the Aussie model ratios, hope these will help with your comparison.  :D

                                                                1.6                                        2.0                                  1.6 CRDi
(http://i4.photobucket.com/albums/y150/rustynutz69/GearRatios.jpg)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 21, 2012, 06:32:46
Russ

Thanks for that info - but you have discovered why I tried to find another way of comparing the gearing.

The only reference I found to the gear ratios for the new i30 6 spd diesel was in the UK Autocar magazine road test of 14th March 2012.
This was as follows :-

1. Ratio = 3.61   speed per 1000 rpm= 4.8 mph
2. Ratio = 1.95   speed per 1000 rpm= 8.9 mph
3. Ratio = 1.37   speed per 1000 rpm= 12.7 mph
4. Ratio = 1.03   speed per 1000 rpm= 16.8 mph
5. Ratio = 0.89   speed per 1000 rpm= 19.5 mph
6. Ratio = 0.77   speed per 1000 rpm= 22.5 mph
Final drive ratio = 4.267

However - I don't believe this data. For a start my car in 6th gear does 69 mph at 2000 rpm = 34.5 mph (55.54 km/h) at 1000 rpm. The autocar figure is only 22.5 mph.

Also Autocar list the maximum speed as 115 mph for 6th gear at 5112 rpm. This is equal to 22.5 mph at 1000 rpm

If I could get my car in 6th gear up to an engine speed of 5112 rpm I would be travelling at 176 mph.


If we start from scratch and use the tyre size data - the formula for calculating the car speed for a given engine rpm is :-

km/hour = (Engine rpm x Tyre Circumference in metres) divided by (Gear ratio x final drive ratio x 16.66)

The tyre circumference can be found here ...http://bndtechsource.ucoz.com/index/tire_data_calculator/0-20 (http://bndtechsource.ucoz.com/index/tire_data_calculator/0-20)

Assuming your 6 speed 1.6 CRDi cars are using 205 55 R16 tyres - the circumference is 1.927 metres

Using the above formula : engine speed 2000 rpm, gear ratio 0.596, final drive 3.941, 6th gear -  works out at 98.50 km/hr. This is quite a bit higher than the 85 and 88 km/hr speeds found by you guys using your sat-navs with your 5 speed diesels.

I have a similar problem with my car. If the autocar 6th gear ratio figures are used the car speed at 2000 rpm should be 70.4 km/hr whereas my sat-nav test indicated a car speed of 111 km/hr

For a second test I found a web site in which you enter your tyre size and gear ratios and it does the calculation for you...
http://www.boosttown.com/gearbox_differential/speed_calculator.php (http://www.boosttown.com/gearbox_differential/speed_calculator.php)

Hence I am confused - unless I am doing something stupid with my maths there is an anomoly with the gear ratios declared by Hyundai and the Autocar magazine when compared with the actual tests using a sat-nav.

Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 21, 2012, 06:55:52
Thanks for that, Alan...unfortunately most of it goes straight over my head so not much help here.... :-[

Oh, and I've just realised I didn't include which model was which in the gear ratio pic....

They are 1.6, 2.0 Petrol and 1.6 CRDi.......
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 21, 2012, 07:29:43
I checked my tyres and just as I thought, they are round and black.

Oh, and 205/55/16.  :)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Dazzler on April 21, 2012, 07:54:02
I checked my tyres and just as I thought, they are round and black.

Oh, and 205/55/16.  :)

You are lucky mine are a little flat on the bottom :P
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Phil №❶ on April 21, 2012, 08:21:19
Alan, I am unable to help you on this research BUT, and I have to say before I make a fool of myself here that I fully expect to be shot down in flames, BUT,  since the speedo is less than reliable (mine is bout 3 MPH fast) what makes you think that the rev counter is any better ????

Not that I want to throw a damper on your excellent research, from which we all benefit me included.

Just a thought for you to factor in or disregard as is your wont.

Kind regards
Asa

Asa,

The engine revs would most likely be obtained as a result of electric impulses derived from a sensor. This info is also used by the ECU to do lots of things, (time the fuel injection etc) so unless the pulses are stuffed up by the tacho (which is an analogue display) it should be pretty accurate, more so than the speedo.  :neutral:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 21, 2012, 08:27:26
Thanks for that, Alan...unfortunately most of it goes straight over my head so not much help here.... :-[

Oh, and I've just realised I didn't include which model was which in the gear ratio pic....

They are 1.6, 2.0 Petrol and 1.6 CRDi.......

Thanks for the clarification - I have amended my calculations to show the 6 speed diesel you gave the ratios for.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on April 21, 2012, 08:30:40
.. This is quite a bit higher than the 85 and 88 km/hr speeds found by you guys using your sat-navs with your 5 speed diesels.
Alan, using your formula and the correct ratios for 5 speed diesel; 0.66 and 3.94, I get 88.96 km/h. This does correlate very closely with that measured by Russ and particularly DB08.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 21, 2012, 08:55:03
.. This is quite a bit higher than the 85 and 88 km/hr speeds found by you guys using your sat-navs with your 5 speed diesels.
Alan, using your formula and the correct ratios for 5 speed diesel; 0.66 and 3.94, I get 88.96 km/h. This does correlate very closely with that measured by Russ and particularly DB08.

That's good.... :goodjob: At the time I did the calc I didn't realise from the table that the 5 speed cars were petrol - so I have since amended the post to use the 6 speed diesel data.

You have just filled in a gap for me - the 5 speed diesel ratio for 5th gear. Do you have the ratios for the other gears too ?
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: baroudeur on April 21, 2012, 11:52:15
BUMP

Come on guys - one of you must have a 6 speed manual diesel and a sat-nav........ :TutTut: :needhelp: :honk: :Prayer:

Sorry Alan I missed this post. 
I have a 6 speed diesel on 205/65 x 16 tyres with only  3000  miles wear.  (Winter tyres Nov - Apr)
I have a  new Garmin sat nav and  a GPS SCD with an LED speed read out.
My speedo  only appears to be reading 1 mph fast compared with both the devices (which  read the same speed)

My sat nav has the Eco fuel consumption setting which provides an OSD when the device is turned  off showing fuel consumption and cost  based on entering each fill and cost per litre. As I keep a record of fill and mileage it will be interesting to compare the car computer, the sat nav figure and my manual entry after  long run.  Off to south of France soon so that maybe the idel opportunity.

In the meantime I will get the readings you need and post them soon.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Xamaxy on April 21, 2012, 13:09:02
Your new 6spd is quite faster at 2000rpms then the older 6spd, especially in 4th and 5th gear.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 21, 2012, 14:19:25
Do you have the ratios for the other gears too ?

Here you go, Alan..... :D

(http://i4.photobucket.com/albums/y150/rustynutz69/GearRatios2.jpg)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on April 21, 2012, 14:41:27
Well done Russ, I looked for a long time but couldn't find them. :(
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 21, 2012, 15:19:41
Thanks pip!  :D

I just happened to have a brochure stored on one of my hard drives.......
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 22, 2012, 17:44:06
Thanks for the contributions - I am away in Cyprus on holiday at present and will consolidate the resuts when I return home in a week's time.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: eye30 on April 22, 2012, 19:06:19
I am away in Cyprus on holiday at present

Hope the weather is better than here.

Rain/sun/showers all day and cool about 5C..
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Lakes on April 22, 2012, 21:09:10
just found this post.
my 6 speed speedo is a lot closer to what my Garmin GPS is reading than what my old 5 speed was. but for some strange reason the GPS Trip & the Hyundai trip meter don't agree.still have to remember this Garmin is old & maps outdated i think its over 7 years old, but it works perfect as a speed check as easy to see & still keep eye on road, thats the problem we face here in Sydney. speed camera's safty camera's and random speed camera's that are randomly set up anywhere. i think its revenue & also think its not safe as how can you check speedo and keep eye on the road at same time. you can't win  :rofl:
cheers
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 23, 2012, 09:18:22
Thanks for the contributions - I am away in Cyprus on holiday at present and will consolidate the resuts when I return home in a week's time.

On holiday in Cypress and still on the forum. Now there's commitment.  :goodjob2:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Shambles on April 23, 2012, 09:38:30
Thanks for the contributions - I am away in Cyprus on holiday at present and will consolidate the resuts when I return home in a week's time.

On holiday in Cypress and still on the forum. Now there's commitment.  :goodjob2:

.. or boredom  :undecided:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 23, 2012, 14:34:11
I always have an hour or so to fill in whilst waiting for my wife to get ready for dinner.

She is currently at the "what shall I wear tonight - would I look OK in this...."stage.

There is at least another 40minutes to go before I log off.................. :mrgreen:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 24, 2012, 09:55:27
I always have an hour or so to fill in whilst waiting for my wife to get ready for dinner.

She is currently at the "what shall I wear tonight - would I look OK in this...."stage.

There is at least another 40minutes to go before I log off.................. :mrgreen:

I hate those questions because there is never a correct answer - it's a fluid thing where an answer might be right today and wrong tomorrow or vice versa.
"Does my bum look big in this?" is another one.
Apparently, "Yes, your bum looks big in everything" is not correct under any circumstances. :confused:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Lakes on April 24, 2012, 21:29:39
I would appreciate help from one of our kind members who runs a 2010 or 2011 i30 diesel with a 6 speed manual box and a sat-nav which displays the car speed.

I would like to compare gear ratios with the new car. Why? - because my new car feels higher geared - but it may simply be an illusion because the engine is still tight.

What I would appreciate is someone to run their car at exactly 2000 rpm in each gear and note down the car's exact speed as shown on the sat-nav - not on the car's speedo, which is not usually dead accurate.  I also need your tyre size.


I will then produce a table comparing both models.

My car - 2012 Style 1.6 CRDi 128PS
Tyres 205 55 R16

Speeds at 2000 rpm in km/hr  18  32  56  79  93  111
Sppeds at 2000 rpm in mph    11  20  35  49  58   69

PS
If others with different car specs wish to participate - that would be a bonus. I could then produce a table showing the car speed per 1000 rpm for each model that is submitted. It all adds to our i30 data base.

Alan sorry for being slow just found out you wanted to compare gear ratio's .
well yesturday i had to find a very quite street to do the 1st &2nd gear seed check with gps speedo ( Garmin ) all these speeds are from my GPS not the speedo & all are @ 2000rpm ( if tach is accurate)
1st gear @ 2000rpm via Garmin GPS Speedo=15kph
2nd gear @ 2000 Via Garmin GPS speedo=30kph
3rd gear @ 2000 via Garmin GPS speedo=48kph
4th gear @ 2000 via Garmin GPS speeo=67kph
5th gear @ 2000 via Garmin GPS speedo=80kph
6th gear @ 2000 via Garmin GPS speedo=95kph

hope this helps
Lakes
this is 2011 i30 CRDi 6 speed SLX stock SLX 16" mag wheels & stock tyres 20k up
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Lakes on April 24, 2012, 21:40:36
just thought i'd ask what is the diff ratio on your new car Alan?
i drove ford fiesta 1.6 turbo diesel few years back it had taller ratio diff and was a bit of a slug i like the lower ratio diff the i30 use seems to be same as my 5 speeds diff ratio perfect for australia's low maxium speed as can use all 6 gears & no big gaps between the gears like with 5 speed there is a big gap 4th to 5th, you notice this more when you have both the 5 speed & 6 speed to drive
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Dazzler on April 24, 2012, 23:16:17
Thanks for doing that John  :goodjob: Alan is holidaying in Cyprus for a week so might not reply straight away....
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 25, 2012, 05:23:33
John

Thank you very much for the info.

You have confirmed my suspicion that the new 2012 i30 1.6 CRDi is higher geared than the 2011 model. This would account for the fact that my new car, although higher powered at 128PS rather than 115PS, feels less lively than my previous car (which was the same as your's). On paper the new car accelerates quicker than the previous model though.

This is how the gearing compares between your car and mine - speeds in each gear at 2000 engine rpm.

Gear                1        2         3         4          5            6

2011 model    15       30      48        67        80          95 km/h

2012 model    18       32       56       79        93          111 km/h

For gears 3 to 6 inc - the gearing of the new model is 16% higher than the previous one. It looks as though  they have changed the final drive ratio to get better economy at normal driving speeds and tweaked the first and second ratio's to ensure a smooth get away.

I will do a bit more work on the project when back at home.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Shambles on April 25, 2012, 08:02:10
On paper the new car accelerates quicker than the previous model though.

Try it on tarmac :P
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on April 25, 2012, 14:54:55
It would be nice to include the original 5 speed in that list to have all the crdi 1.6 models covered in the one post.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 25, 2012, 18:03:16
It would be nice to include the original 5 speed in that list to have all the crdi 1.6 models covered in the one post.

Watch this space - I will produce a table of all the models members submit the data for when I am back home from holiday and can use a proper computer
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Lakes on April 26, 2012, 20:15:28
i've played with gear ratio's over the years, if you have high Torque motor sometimes they feel better & excellerate better with the taller gears, because they thrust car forward with the Torque and the low gears the motor revs up too quick and you need to shift quicker. hard to explain.
with fuel economy will just have to wait and see as even though motor will be at lower revs doing 111kph, the wind resistance is stronger at that speed so works like carrying a weight. but if the new car is more slippery could be a different story. would be nice to test drive one to compare. just what i find with taller diff ratio you have to change down a gear a lot more. what is the Torque output of this new motor? as i would take more Torque & just have same HP anyday. also those ps your quoting are shetland pony's :rofl: give me HP.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: baroudeur on April 28, 2012, 12:45:17
It would be nice to include the original 5 speed in that list to have all the crdi 1.6 models covered in the one post.

Watch this space - I will produce a table of all the models members submit the data for when I am back home from holiday and can use a proper computer

Sorry for delay.  Gremlins at work....wife broke her leg.

My figures agree with those supplied by Lakes

2011 1.6 diesel 6 speed gearbox on 205/55 x 16 tyres

2000rpm on car tacho....speeds on three GPS devices which agree with each other and  indicate car speedo is  only 1 mph fast

1st ......10 mph
2nd..... 18 mph
3rd..... 30 mph
4th..... 42 mph
5th..... 50 mph
6th..... 60 mph
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 28, 2012, 12:47:36
Sorry for delay.  Gremlins at work....wife broke her leg.

 :rofl: Love the way you just dismiss it - wife broke her leg.  :lol:
Anyway, on to the important stuff......  :)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: 2i30s on April 29, 2012, 00:52:06
Alan, I am unable to help you on this research BUT, and I have to say before I make a fool of myself here that I fully expect to be shot down in flames, BUT,  since the speedo is less than reliable (mine is bout 3 MPH fast) what makes you think that the rev counter is any better ????

Not that I want to throw a damper on your excellent research, from which we all benefit me included.

Just a thought for you to factor in or disregard as is your wont.

Kind regards
Asa

Asa,

The engine revs would most likely be obtained as a result of electric impulses derived from a sensor. This info is also used by the ECU to do lots of things, (time the fuel injection etc) so unless the pulses are stuffed up by the tacho (which is an analogue display) it should be pretty accurate, more so than the speedo.  :neutral:
the RPM is measured on an i30 engine with a transducer in the bellhousing,similar to the crank angle sensor.  :winker: the RPM readout on my scan gauge II is very close to the reading on my tacho in the dash,but yes,the speedo isn't very accurate.  :fum:  all new model cars should have digital gauges. IMO.  :idea:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 29, 2012, 05:35:26
As I mentioned earlier - the data kindly provided by lakes and baradeur has shown that the 2012 i30 1.6 CRDi is geared 16% higher than than the previous model.  Hence any minor errors with tacho accuracy are insignificant.

Although the new 128PS engine is more powerful than the previous 115PS engine - the maximum torque has remained the same. Despite this, and the taller gearing, Hyundai claim that the new car accelerates to 100 km/h slightly quicker than the previous model.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: baroudeur on April 30, 2012, 14:55:58

 :rofl: Love the way you just dismiss it - wife broke her leg.  :lol:


Getting used to it.

She had a serious operation on her foot last December ....6 weeks no load bearing then gradual return to normal.  Was due for a 'final inspection' tomorrow.

Last Thursday morning -  all packed for long weekend at our son's place in Somerset - and she slipped dislocating her ankle and breaking tib and fib  on the same leg whilst inspecting the rainwater butt that I had rushed to get from Aldi at 8a.m..

Six weeks no load bearing................. can't use the stairs so confined to bedroom.   :fum: Now forty years ago..........  :happydance:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 30, 2012, 15:17:07
Might be time to trade up, baradeur?  :p  :whistler:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 30, 2012, 16:16:08
This table details the gearing data provided by various members for their i30 CRDi cars.

You are welcome to draw your own conclusions regarding the gearing of the various models - be they the previous model with 5 and 6 speed gear boxes and the new model with a 6 speed box.

My new model is clearly more highly geared than the previous cars - in fact the 4th and 5th gears are equal to the 5th and 6th gears of the previous model - with 6th gear being geared almost 17% higher.  This probably accounts for why my new car feels less spirited than my previous model and why I am now able to achieve economy figures exceeding 60 mpg (4.7 l/100km) whereas the previous cars best was only 52 mpg (5.43 l/100 km) over the same test route which included 34% urban and 66% motorway driving. 

(http://img.photobucket.com/albums/v308/AlanHo1937/i30%20Forum/GearingComparison-1.jpg)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on April 30, 2012, 16:24:22
Great post Alan.
The speeds in mph in first gear should be the same for my car & Nustyrutz' though. :undecided:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on April 30, 2012, 16:35:14
 :whsaid:

And yes, I noticed your spelling, Dave...... :P
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on April 30, 2012, 20:01:13
Great post Alan.
The speeds in mph in first gear should be the same for my car & Nustyrutz' though. :undecided:
Sorry about that - now amended - I can't type accurately either............ :twisted:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Dazzler on April 30, 2012, 22:38:09
Thanks for your efforts yet again Alan  :goodjob2: :goodjob:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: AlanHo on June 01, 2012, 09:11:59
The i30 manual car just launched in Australia is different to the European version in two major respects.

The Korean built cars have a torsion beam rear suspension whereas the Euro cars have a more expensive multi link set up.

Gear ratios for the manual cars are also different. The Australian car is lower geared.

Here are the speeds at 2000 rpm.

1st gear.  Aus car 17 kph    Euro car 18 kph
2nd gear  Aus car 31 kph    Euro car 32 kph
3rd gear  Aus car  51 kph   Euro car  56 kph
4th gear  Aus car  72 kph   Euro car  79 kph
5th gear  Aus car  86 kph   Euro car  93 kph
6th gear  Aus car 101 kph  Euro car  111 kph

My guess is that the Australian model will feel more lively but will have a slightly worse fuel economy - it definitely has much worse emmissions presumably because it does not have a DPF.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on June 01, 2012, 09:15:53
That is interesting from both the gearing point of view and the suspension set up.
On the website it points out that the Australian suspension tune is designed for Australian conditions.
I wonder why they went to beam rear axle?  :confused:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Phil №❶ on June 01, 2012, 09:22:09
What is this "Australian conditions", are we on a different planet. We have roads ranging from dirt tracks to freeways with lower speed limits than Europe  :exclaim:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Doggie 1 on June 01, 2012, 09:28:23
I agree.
I don't think that the majority of our conditions are much different from other parts of the world.
Sure, if you're in the outback it's different but that's not where i30s are going to be.
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on June 01, 2012, 16:09:26
They might have changed the diff ratio (lower geared) but surely the rear suspension is the same? Not confused with the Accent?
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on June 01, 2012, 16:13:12
They might have changed the diff ratio (lower geared) but surely the rear suspension is the same? Not confused with the Accent?

Definately different rear suspension, pip..... :)

http://www.hyundai.com.au/vehicles/i30/specification-range (http://www.hyundai.com.au/vehicles/i30/specification-range)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on June 01, 2012, 16:35:36
Ok, it does say that but am I to believe that there are two completely different rear suspensions, each having different mounting points etc.?

Not convinced, it's one or the other and torsion beam is a step backward. :confused:

A torsion beam takes less space (so more in the cabin) and cheaper which advantages the smaller Accent better. Someone needs to look under one. :winker:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on June 01, 2012, 16:43:19
According to the brochure, the Accent has a torsion beam rear end too....  :)
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: rustynutz on June 01, 2012, 17:00:12
This review also confirms the Aussie i30 has the torsion beam rear suspension.....

http://www.themotorreport.com.au/54247/2012-hyundai-i30-first-drive-road-test-review-australia (http://www.themotorreport.com.au/54247/2012-hyundai-i30-first-drive-road-test-review-australia)

I read elsewhere that all Korean built i30's have the torsion beam rear end....while the i30's built at the Czech Republic factory have the multi link rear suspension.  :cool:
Title: Re: Information Needed to Compare Gear Ratios for Each Model
Post by: Pip on June 02, 2012, 01:28:35
So it looks like they have dumbed down the rear suspension for Aussie cars. :wacko: And that article says that the Oz suspension tuning was to soften the ride at handling expense.:undecided:

I always assumed that when the original car's tuning had been Austalianised it was to to improve the handling performance but perhaps it was the other way around. Might explain why we ended up with a significantly smaller rear sway bar than the UK and from memory those here that were less impressed with understeer and beefed the sway bar were from Oz.

I was never in line for this model but on paper they seem to have have moved away from many items on my checklist. :neutral:
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