DrivingTheDream Posted July 27, 2006 Share Posted July 27, 2006 To manuals? Quote Link to comment Share on other sites More sharing options...
Paul_SWZ Posted July 27, 2006 Share Posted July 27, 2006 Mainly because the auto box has less gears I believe ! Quote Link to comment Share on other sites More sharing options...
Pete Posted July 27, 2006 Share Posted July 27, 2006 Indeed. Also why the diffs are different ratios. Quote Link to comment Share on other sites More sharing options...
DrivingTheDream Posted July 27, 2006 Author Share Posted July 27, 2006 I know that! lol! I meant why do they have less gears too? Quote Link to comment Share on other sites More sharing options...
Pete Posted July 27, 2006 Share Posted July 27, 2006 I'm guessing - Because they're so hidiously complicated inside and it's very expensive to make with more gears? It's only fairly recently that BMW etc have had the cool proper sequential manual gearboxes - I bet they cost a fortune. Quote Link to comment Share on other sites More sharing options...
Paul_SWZ Posted July 27, 2006 Share Posted July 27, 2006 It also due to size and weight as there is valves, solenoids and more fluid for each gear causing it to need a bigger sump etc Quote Link to comment Share on other sites More sharing options...
garethr Posted July 27, 2006 Share Posted July 27, 2006 Mercedes have a 7-speed auto now, but they can't use it on the big power AMG cars because it won't handle the torque, so maybe it's a good thing that the Toyota box is only 4-speed :-) Quote Link to comment Share on other sites More sharing options...
imi Posted July 27, 2006 Share Posted July 27, 2006 not to mention that the Auto gearbox design is over 10 yrs old....technology has moved on since..... Quote Link to comment Share on other sites More sharing options...
paul mac Posted July 28, 2006 Share Posted July 28, 2006 not to mention that the Auto gearbox design is over 10 yrs old....technology has moved on since..... 10 years try 15-20 years, i tried a flappy paddle gear box in a saab turbo hired when i was away with work, it was laughable the ecu would wait about 10 seconds while it took in the scenery THEN change up with the engine bouncing of the rev limiter, i was glad to get back in the no nonsense 3 speed supe Quote Link to comment Share on other sites More sharing options...
Ark Posted July 29, 2006 Share Posted July 29, 2006 I'm guessing - Because they're so hidiously complicated inside and it's very expensive to make with more gears? It's only fairly recently that BMW etc have had the cool proper sequential manual gearboxes - I bet they cost a fortune. Plus the SMG's lunch themselves with frightening regularity - I knew a chap who went through three of them on his M3... Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted July 29, 2006 Share Posted July 29, 2006 I know that! lol! I meant why do they have less gears too? Mainly because the slippage in the torque converter enables the engine to be in a more efficent part of the toque curve than a locked up system, (clutch/manual 'box) therefore negating the need for more gears (except in extreme high performance applications) Quote Link to comment Share on other sites More sharing options...
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