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Inboard brakes - Curiosity
Many years ago, some high bucks cars (Jaguar, I believe was one of them),
developed inboard disc brakes for their IRS rear axles. These brakes, IIRC, were mounted to either side of the banjo housing. This would allow the banjo housing to be hard mounted to the chassis, becoming sprung weight. The swing axle assemblies were then unsprung weight, and the figures of sprung/unspring were improved a bit. Does anyone else remember this? Were these systems ever in large scale production? It occurred to me that if this sort of system were worth developing, somebody would have. In a typical modern FWD system, inboard discs would be possible on the transmission side of the halfshafts, and a rear swing axle with sprung disc assemblies would also be possible. This is just a thought provoker. I imagine such a system either doesn't offer the advantages hoped for in the past, or is just too expensive or undependable to implement. |
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Inboard brakes - Curiosity
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Inboard brakes - Curiosity
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#4
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Inboard brakes - Curiosity
> wrote in message .. . > Many years ago, some high bucks cars (Jaguar, I believe was one of them), > developed inboard disc brakes for their IRS rear axles. These brakes, > IIRC, > were mounted to either side of the banjo housing. > > This would allow the banjo housing to be hard mounted to the chassis, > becoming > sprung weight. The swing axle assemblies were then unsprung weight, and > the > figures of sprung/unspring were improved a bit. > > Does anyone else remember this? Were these systems ever in large scale > production? > > It occurred to me that if this sort of system were worth developing, > somebody > would have. > > In a typical modern FWD system, inboard discs would be possible on the > transmission side of the halfshafts, and a rear swing axle with sprung > disc > assemblies would also be possible. > > This is just a thought provoker. I imagine such a system either doesn't > offer the > advantages hoped for in the past, or is just too expensive or undependable > to > implement. Early Jag inboard brakes required dropping the rear crossmember to service. Later versions were only slightly more accessable. Both suffered when the brakes overheated the oil seals on the final drive and oil leaked onto the rotors. The Audi 100LS is the only FWD I recall that had inboard front brakes. Changing pads on cars with auto trans was difficult and oil leaks onto the brakes were common. The layout thwarts cooling air from doing its' job resulting faster wear of the already soft German rotors and the drive axles must be removed to change them. In the few years these cars were on the road (they had many other problems) I never witnessed a broken axle. |
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Inboard brakes - Curiosity
"Chas Hurst" > wrote in message ... > Early Jag inboard brakes required dropping the rear crossmember to service. > Later versions were only slightly more accessable. Both suffered when the > brakes overheated the oil seals on the final drive and oil leaked onto the > rotors. The Audi 100LS is the only FWD I recall that had inboard front > brakes. Changing pads on cars with auto trans was difficult and oil leaks > onto the brakes were common. The layout thwarts cooling air from doing its' > job resulting faster wear of the already soft German rotors and the drive > axles must be removed to change them. In the few years these cars were on > the road (they had many other problems) I never witnessed a broken axle. The only Jaguar I ever personally considered owning was an XK-E, slightly used in the 1960's. Compared to anything else I had ever driven, this was like a dream...fantastic roadworthiness, fine acceleration,etc. Then, before I bought, I found that they were typically British of that era.. burned a lot of oil, expensive to work on, stone age electrics,not so very reliable. I am very interested in what the companies have done in the last few years to make such dramatic improvements in body integrity, driveability, quietness. We have driven Buicks a lot, and they are fairly comfortable and roadworthy cars, but still with a little objectionable noise, body integrity okay but not good, a slight about of jitter at highway speed. But, compared to earlier Fords I have known (up through 1990 Thunderbirds) , Buick was a jump step better. (Notice, I do not brag on some of GM's engineering. Some engines, trannies, electrics, etc are terrible.) I have test driven Toyota Camry and Volks Passat recently and am truly amazed at the improvement over what I am used to. Perhaps these manufacturers have just taken a lot of care with many small things but the perceived feel, to me, is as if they have made quantum improvements. |
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Inboard brakes - Curiosity
Chas Hurst wrote:
> The Audi 100LS is the only FWD I > recall that had inboard front brakes. Also the Citroen 2CV. |
#7
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Inboard brakes - Curiosity
Hugo Schmeisser > wrote:
>Chas Hurst wrote: > >> The Audi 100LS is the only FWD I >> recall that had inboard front brakes. > >Also the Citroen 2CV. The 2CV has brakes? I thought you just stuck your foot through the hole in the floorboards to stop it? --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#8
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Inboard brakes - Curiosity
Scott Dorsey wrote:
> Hugo Schmeisser > wrote: > > Chas Hurst wrote: > > > >> The Audi 100LS is the only FWD I > >> recall that had inboard front brakes. > > > > Also the Citroen 2CV. > > The 2CV has brakes? I thought you just stuck your foot through the > hole in the floorboards to stop it? So that's what Fred Flintstone drove... |
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Inboard brakes - Curiosity
"Hugo Schmeisser" > writes:
>> The Audi 100LS is the only FWD I >> recall that had inboard front brakes. > > Also the Citroen 2CV. ....and the Volkswagen K70. Front wheel drive, inboard disks on front, regular drums on rear wheels. Could be scary in wet weather: I soon learned to dry the rotors with my left foot on the brake pedal after driving through puddles of any size. -tih -- Don't ascribe to stupidity what can be adequately explained by ignorance. |
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Inboard brakes - Curiosity
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