Mechanical Auto-shifting

[JohnFogarty]

I thought I heard from someone that 190 was using a CVT again this year.

Originally Posted by Ether

I think they're bi-directional. Next time I disassemble the comet on the go-kart to clean and lube it I'll take a closer look.

By the way, I suppose you get this a lot, but every time I see your name I get the 60's deja-vu (even though it's spelled differently :-)

That would be awesome to know since I don't have access to one myself at the moment.

Yeahh, I do get that a lot. It's still funny to me that the name had nothing to do with him, it was shear coincidence.

[fox46]

If one were hellbent on an infinitely variable transmission, I would start with something like what is found in a snowblower: http://www.youtube.com/watch?v=hZD5toJyjyQ

Basically, the engine drives a round plate and small rubber wheel is driven by said plate. The shift linkage moves the wheel to different points on the round plate. As the circumference of the small wheel's contact patch changes you end up with different gear ratios.

It would be quite simple to build something like this- use a banebot wheel on a section of hex shaft and a mechanism to slide it back and forth depending on the desired gear ratio. You'd have to run it at fairly high speed though to minimize the slippage.

[Francis-134]

Originally Posted by JohnFogarty

I thought I heard from someone that 190 was using a CVT again this year.



That would be awesome to know since I don't have access to one myself at the moment.

Yeahh, I do get that a lot. It's still funny to me that the name had nothing to do with him, it was shear coincidence.

Sorry to disappoint, but we are not using a CVT, just a standard 1-speed gearbox to a six wheel drive.