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Car Forum / Honda Cars / June 2009honda s600 chain final drive? but why?
turns out the old Honda s600 little sporty cars had a differential and half shafts in the rear, but then little sealed chain drives from the end of the half shaft to the rear wheel on either side. ???? just to reduce unsprung weight?? only reason i can think of. z <gzuckier@snail-mail.net> wrote in news:0105b3d0-b4b5-418e-a18d- fdc0933e5c0a@s12g2000yqi.googlegroups.com: > turns out the old Honda s600 little sporty cars had a differential and > half shafts in the rear, but then little sealed chain drives from the > end of the half shaft to the rear wheel on either side. ???? just to > reduce unsprung weight?? only reason i can think of. To create an independent rear suspension that also drove the rear wheels. I can only guess Honda used this design because it used technology Honda understood. Here's a pic of that rear end: <http://www.tegger.com/hondafaq/misc/honda_chains.jpg>  SignatureTegger The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ > z <gzuckier@snail-mail.net> wrote in news:0105b3d0-b4b5-418e-a18d- > fdc0933e5c0a@s12g2000yqi.googlegroups.com: [quoted text clipped - 7 lines] > wheels. I can only guess Honda used this design because it used > technology Honda understood. Quite the car from what I've seen. I saw Leno driving his recently on "My Classic Car", and the thing sounds like a proper full blown sports car - at 30Mph <g>. Lovely engine sound. >> z <gzuckier@snail-mail.net> wrote in news:0105b3d0-b4b5-418e-a18d- >> fdc0933e5c0a@s12g2000yqi.googlegroups.com: [quoted text clipped - 11 lines] > Classic Car", and the thing sounds like a proper full blown sports car - > at 30Mph <g>. Lovely engine sound. I remember the car from my days in Japan circa 1967-69, both the S600 and the S800. Stratospheric rpms as I recall. I autocrossed a Sunbeam Tiger (modified) at the time with the Tokyo Sports Car Club, but the S series Hondas were in a different class than the 4.2 ltr V8 Tiger. > turns out the old Honda s600 little sporty cars had a differential and > half shafts in the rear, but then little sealed chain drives from the > end of the half shaft to the rear wheel on either side. ???? just to > reduce unsprung weight?? only reason i can think of. When you see Honda products that incorporate seemingly illogical or unconventional methods, it's be cause Honda does not like to pay patent royalties. So, they solve the problem by other "original" means. "Honda, we make "It" different." -- Tp, -------- __o ----- -\<. -------- __o --- ( )/ ( ) ---- -\<. -------------------- ( )/ ( ) ----------------------------------------- No Lawsuit Ever Fixed A Moron... >> turns out the old Honda s600 little sporty cars had a differential and >> half shafts in the rear, but then little sealed chain drives from the [quoted text clipped - 6 lines] > > "Honda, we make "It" different." oh brother. where do people like you come from? have you never considered the fact that maybe, just maybe, there was /technical/ merit to that design? > -- > Tp, [quoted text clipped - 6 lines] > > No Lawsuit Ever Fixed A Moron... access to usenet apparently never fixed one either. > >> turns out the old Honda s600 little sporty cars had a differential and > >> half shafts in the rear, but then little sealed chain drives from the [quoted text clipped - 8 lines] > have you never considered the fact that maybe, just maybe, there was > /technical/ merit to that design? Yes, there is always technical merit with a particular design. But what I said is not untrue. > > -- > > Tp, [quoted text clipped - 8 lines] > > access to usenet apparently never fixed one either. -- Tp, -------- __o ----- -\<. -------- __o --- ( )/ ( ) ---- -\<. -------------------- ( )/ ( ) ----------------------------------------- No Lawsuit Ever Fixed A Moron... >>>> turns out the old Honda s600 little sporty cars had a differential and >>>> half shafts in the rear, but then little sealed chain drives from the [quoted text clipped - 9 lines] > > Yes, there is always technical merit with a particular design. always??? gm, ford, microsoft, etc. can prove you wrong on that one eight days a week. > But what I said is not untrue. no, you we're just guessing. >>> -- >>> Tp, [quoted text clipped - 18 lines] > > No Lawsuit Ever Fixed A Moron... > turns out the old Honda s600 little sporty cars had a differential and > half shafts in the rear, but then little sealed chain drives from the > end of the half shaft to the rear wheel on either side. ???? just to > reduce unsprung weight?? only reason i can think of. ok, since nobody else is telling you, i shall. one of the key components to vehicle performance is weight. lack of it. drive trains, because of torque requirements, are typically very heavy. so, if you reduce the torque requirements, you can reduce some of the weight of the transmission componentry. all you need then is to have the torque output at the driving wheels, and you're set. [if you notice, the chain drives are reduction gears, so rpm drops, and torque increases. it's also worth noting that chains are more mechanically efficient than gears.] this approach is not unique. in heavy off-road vehicles for instance, torque requirements can very high and variable, thus reliability comes from using relatively low torque componentry through the main drive line, then [planetary] hub reduction gears for final drive. planetary hubs are not terribly efficient, but they are very robust. efficiency is not #1 concern when you're axle deep in mud. so, going back to the honda, since the vehicle already has a high revving engine, there is no reason not to take advantage of this and use a reduction gear at the end of the train, taking advantage of lighter componentry up to that point. mechanically, it's not a bad system. why is it not more commonly used? cost, complexity, low revving engines, limited suspension options. and the highly conservative mind-set of the typical mechanic. |
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