Who here would want something like this? (Idea)

[christeeezy]

toystory: I just watched this video on how that autolocking diff you linked to works:



And now I'm inclined to agree with you that it would be ideal.

Question though: Imagine that the ring gear inside the diff is actually our chain sprocket.

Wouldn't engine braking cause the axles to lock up due to the center pin pushing the toothed gears of the diff outward (see 4:45 in the video)?

So for those that use centrifugal clutches, that would be ideal. Not so much for motorcycle engine users though, as we'd have to clutch in through a turn to get the diff to unlock. Correct?

 

[fowler]

Just power off

 

[r97]

Fowler, engine braking would apply when costing in down a hill backwards. I would be interested to see someone use a quad diff in a kart, although I do like the one-way bearing idea better.

 

[fowler]

Not if u stall it

It would be intresting to see it built but I don't see it being awfully reliable with off the shelf one way bearings

What about a slip joint like in a tractor pto

Would work like the diff

 

[r97]

I think if you used two bearings to support the wheel itself, and then one or two one-way bearings to transfer the torque it would be very reliable. You would just need to make sure the one-way bearings could handle the torque and possible shock loads.

Engine torque*mechanical advantage (gear ratio)*safety factor=the maximum torque that would be sent to the axle.

Since it is possible one wheel could loose all traction and the second would have to transfer 100% of the torque, I would make sure the one-way bearing(s) in EACH wheel can handle the torque figure you came up with using the equation above.

I think I might give this idea a go when I finally get around to building me race style kart. Although it's more complicated than just an axle, it would really simplify the design of the steering and frame.

 

[digschopper]

mc master sells a one-way bearing for 1" shaft for about $38 each. so if you need2,plus axles,brakes,etc,i'm thinking buying the ready made differential is a better deal.