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The box is a complete redesign with fewer parts. Some parts are now made from carbon. It's lighter than the 5 speed.The ratios all seem pretty well spaced to me. It still has some pull in 6th, sometime I think I'm in fourth. There is an extra 5nm of torque in the new motor to help though.The offical brief say the gearbox is responsible for a 1.5% saving in fuel . I haven't really done any mileage checks yet, will do soon.
Six-Speed Manual Transmission Carbon Multi-Cone Synchronizer Rings The U2 is mated to a new manual transmission with a sixth gear which boosts fuel economy by an estimated 1.5 percent while the challenge of improvements to shift feeling and precision has been tackled through several measures. First, multi-cone synchronizer rings were specified. By expanding the friction surface, synchronizing capacity is enlarged and shift effort is reduced. First and second gears feature triple cone synchronizer rings while double cone synchronizer rings are applied to the third through sixth gears. Also, the synchronizer rings (first/second) are made of carbon, a material used in clutch, brake and other demanding high-friction applications. The carbon synchronizer rings offer far superior durability compared to standard brass synchronizer rings. Modulized Shift Control Assembly The six-speed's shift control assembly has been totally redesigned into a modular unit resulting in more precise shift quality. As there are a fewer number of parts in the new design, the stack-up chain of parts is greatly reduced resulting in smaller tolerances and higher shift precision. The new module is lighter, simpler and requires less assembly time with reduced margin for error. Within the central control shaft, a new linear-type bearing is used in addition to a conventional rotational bearing to lower friction in the detent pin resulting in lighter and smoother feeling shifts. Low Noise Gear Profile The six-speed is also quieter. Using computer aided engineering tools, the profile of the gear teeth has been designed to be insensitive to gear teeth contact transmission error thus minimizing gear noise.
thanks Lorian, were is reverse gear located on your new 6 speed? like my five speed it is ...lift a ring under gear shift knob, then push to extream left & forward. how do you go about engaging reverse on the new 6 speed?i wonder if we will ever have this gearbox offered in Australia.
also the removal of airconditioning would save weight and save fuel too.
Thanks Lorian, i looked it up online, seems they keep same first three gear ratio's that the 5 speed now have & they have changed the last three to taller gear ratio's but for a five speed owner means the last two gears are a different ratio than they now have. with the adition of a 6th gear.
5th -4.6%I calculated these using an old 4 function calculator so it's quite possible I have got it wrong!
Quote from: Pip on January 19, 2010, 07:02:035th -4.6%I calculated these using an old 4 function calculator so it's quite possible I have got it wrong!The change in 5th would be supported by the difference in observations between mine/shambles' car.
hey good Nick, did you go up any hills on your weekend trip? what speeds did you get up to?
Quote from: Lakes on January 18, 2010, 18:06:24Thanks Lorian, i looked it up online, seems they keep same first three gear ratio's that the 5 speed now have & they have changed the last three to taller gear ratio's but for a five speed owner means the last two gears are a different ratio than they now have. with the adition of a 6th gear.I was interested in the changes in the new ratios Lakes, so I also looked it up on their website. http://worldwide.hyundai.com/I guess we found the same place but with my figuring I came to a slightly different conclusion when taking into account the final ratio(s). I have no idea how the box is made but there appears to be an extra intermediate gear interposed to provide effectively two final ratios with 1,2 and reverse on one and 3,4,5 and 6 on the other. 1st -2.5%2nd +6%3rd +2.9%4th -5%5th -4.6%6th +20%Where the percentages are the new box relative to the old and the 6th gear is relative to the old 5th gear to indicate the drop in revs expected when cruising - knocking off a useful 20%.Interesting that 1st gear is even lower geared than before, I thought 1st was already quite low. 2nd and 3rd have been pushed up and 4th and 5th down making the gap between 3rd and 4th much less.I calculated these using an old 4 function calculator so it's quite possible I have got it wrong!
Quote from: Lorian on January 19, 2010, 07:12:03Quote from: Pip on January 19, 2010, 07:02:035th -4.6%I calculated these using an old 4 function calculator so it's quite possible I have got it wrong!The change in 5th would be supported by the difference in observations between mine/shambles' car.The drop in 5th in particular should allow this gear to be used around town at 60kmh/35mph whereas now it's just painfully close but can't quite make it. Does it?
..or is fith direct to the diff ratio?
Quote from: Lakes on January 19, 2010, 05:43:37hey good Nick, did you go up any hills on your weekend trip? what speeds did you get up to?Hey Nick, sounds great m8, was just asking if you went up any hill's, as the little 1.6 CRDi can surprise you how well it can pull hill's, but here in Australia we can't have much fun at all, as maxium speed limit is about 70mph if you get caught going about 15mph over the max posted limit the can take your licence. but when i grew up, the most dangeriouse thing on the road was a new australian, mostly Greek or Italian, LOL the cops could not book you unless they could catch you, and they had to follow you for a few miles driving over the speed limit to confirm you were speeding.was also a lot of dirt roads in sydney, all the drainage at side of roads were dirt and lots of cars got bogged down when it rained,was a bit wilder in those day.cheersNo spectacular hills to speak of. I travelled to the county of Norfolk in eastern England which, for the most part, is known for being flat as a lot of the land was originally reclaimed from the sea.lots of very comfortable cruising between 80 - 90MPH. (not me officer) I wasn't trying to be economical. I was trying to make a fairly honest comparison with my old car, and, quite frankly, there isn't one!! 8)
When I drove a 5 speed box I never thought to see how many RPM it was pulling at 70mph/113kph, but I guess some may be interested in the figures for the 6 speed 1.6 CRDI Hatchback. At this speed in:5th Gear - 2600RPM6th Gear - 2200RPMGive or take 50RPM.
Are the ratios in the handbook? Would love to see them posted if they are. Include final of course.
Quote from: Pip on January 18, 2010, 01:21:47Are the ratios in the handbook? Would love to see them posted if they are. Include final of course.Is this what you wanted? 1. - 3,6562. - 1,9623. - 1,1894. - 0,8445. - 0,7026. - 0,596