Different sprockets on front and back wheels

[Elgin Clock]

Everyone is assuming your wheels are the same diameter in the front and back.
Is this true?

[neoshaakti]

yeah they are the same diameter

[Matt C]

If you have 4 motors controlling each of those 4 wheels, then it would be possible, but other factors would have to be addressed to keep your wheels moving at the same speed.

[MCahoon]

I'm afraid I don't recall who posted it, but there was a thread in which a "NASCAR" chassis set up was discussed (maybe M Krass recalls it). I believe it was based on a 6 wheel chassis, with the front pair of wheels slightly larger than the center pair of wheels which were in turn slightly larger than the rear set. I believe the concept was that since two of the three pairs would tend to be slipping, that they would tend to be able to move sideways somewhat easier (think of a rear drive car. when the drive wheels are spinning, the rear of the car is very easy to push sideways). It may be that a 4-wheel drive system with the front and rear running on different sprocket sizes would be somewhat easier to turn . I would agree that it would essentially be only a little better than a 2-wheel drive system in terms of pushing power.

[Madison]

Originally Posted by MCahoon

I'm afraid I don't recall who posted it, but there was a thread in which a "NASCAR" chassis set up was discussed (maybe M Krass recalls it). I believe it was based on a 6 wheel chassis, with the front pair of wheels slightly larger than the center pair of wheels which were in turn slightly larger than the rear set. I believe the concept was that since two of the three pairs would tend to be slipping, that they would tend to be able to move sideways somewhat easier (think of a rear drive car. when the drive wheels are spinning, the rear of the car is very easy to push sideways). It may be that a 4-wheel drive system with the front and rear running on different sprocket sizes would be somewhat easier to turn . I would agree that it would essentially be only a little better than a 2-wheel drive system in terms of pushing power.

http://www.chiefdelphi.com/forums/sh...6&postcount=29

I'm not too nerdy or anything. Honest.

[Richard Wallace]

Originally Posted by M. Krass

http://www.chiefdelphi.com/forums/sh...6&postcount=29

I'm not too nerdy or anything. Honest.

Dang, Madison, you beat me to it.

I've been wondering if some team would implement Dr. Joe's suggestion. Maybe this is the year.