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

"They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance."
- 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
2019 Annual Funding Drive!
**********************************
https://itinerant-air-cooled.com/viewto ... 41&t=13755

BobD - 1978 Bus . . . . . . . . . . .111,145 miles
Chloe - 1970 bus . . . . . . . . . . . 206,812 miles
Naranja - 1977 Westfalia . . . . . 97,060 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 76,650 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

"They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance."
- 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."
119k miles with me.
296k 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:
2019 Annual Funding Drive!
**********************************
https://itinerant-air-cooled.com/viewto ... 41&t=13755

BobD - 1978 Bus . . . . . . . . . . .111,145 miles
Chloe - 1970 bus . . . . . . . . . . . 206,812 miles
Naranja - 1977 Westfalia . . . . . 97,060 miles
Pluck - 1973 Squareback . . . . . 55,510 miles
Alexus - 1991 Lexus LS400 . . . 76,650 miles

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