For twisted gearheads

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SlowLane
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For twisted gearheads

Post by SlowLane » Wed May 17, 2017 11:36 am

'81 Canadian Westfalia (2.0L, manual), now Californiated

"Wisdom comes from experience. Experience is often a result of lack of wisdom."
- Terry Pratchett

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Amskeptic
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Re: For twisted gearheads

Post by Amskeptic » Wed May 17, 2017 4:15 pm

SlowLane wrote:
Wed May 17, 2017 11:36 am
http://www.jacquesmaurel.com/gears

Fascinating and a little head-hurting. Now what is the practical application?
Colin
BobD - 1978 Bus . . . . . . . . . . .111,130 miles
Chloe - 1970 bus . . . . . . . . . . . 206,787 miles
Naranja - 1977 Westfalia . . . . . 86,570 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 72,113 miles

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SlowLane
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Re: For twisted gearheads

Post by SlowLane » Thu May 18, 2017 10:04 am

Amskeptic wrote:
Wed May 17, 2017 4:15 pm

Fascinating and a little head-hurting. Now what is the practical application?
Colin
Well, does it have to have one? Can't it be enjoyed just for its own elegant perversity?

But since you ask: the paradoxical gearset forms the basis of the Mercier differential, a torque-sensing differential developed by a M. Mercier of Renault Automobiles back in the 1980s. The Mercier differential was simpler in construction than the more popular Torsen differential. There's a brief paper on the subject at Professor Maurel's website here: http://www.jacquesmaurel.com/files/Exp ... 0gears.doc

Also, one of the videos at the site I posted originally has the most intuitively lucid explanation of the involute gear tooth profile that I've ever seen.
'81 Canadian Westfalia (2.0L, manual), now Californiated

"Wisdom comes from experience. Experience is often a result of lack of wisdom."
- Terry Pratchett

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asiab3
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Re: For twisted gearheads

Post by asiab3 » Thu May 18, 2017 11:28 am

Really enjoying this, I think.

Robbie
1969 bus, "Buddy."
99k miles with me.
277k miles on Earth.

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Amskeptic
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Re: For twisted gearheads

Post by Amskeptic » Sun May 21, 2017 6:47 am

SlowLane wrote:
Thu May 18, 2017 10:04 am
Amskeptic wrote:
Wed May 17, 2017 4:15 pm

Fascinating and a little head-hurting. Now what is the practical application?
Colin


Well, does it have to have one? Can't it be enjoyed just for its own elegant perversity?

That is where I left off. "Elegant perversity". However, being curious (not a crime yet), I was wonderin if the damn thing had a practical application that I could not yet fathom but would want to know . . . like the myriad of other elegant perversities that I have been subjected to in my fifty eight years of learning about all number of elegant perversities, you know, like flywheel/crankshaft harmonics and stuff.
Colin :geek:
BobD - 1978 Bus . . . . . . . . . . .111,130 miles
Chloe - 1970 bus . . . . . . . . . . . 206,787 miles
Naranja - 1977 Westfalia . . . . . 86,570 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 72,113 miles

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