Differential Options

[yoshi]

Originally Posted by TNT

So, this thread started Dec. 05' and has gone till July. 09' and no one has seen,heard,or tested this so called FNR ?
WOW !

Which unit, this topic talks about multiple FNR's, I don't think a specific one has been talked about since July of 05 though?

[gootjr]

Hello Yoshi
Have you had any problems with the chains burning up using the Jeffco setup? With the small sprocket on the trans it seems like you end up with a fairly short chain. I had seen a car in the dezert who had one and added a oiling system to his car for that reason.

Thanks Bob

[yoshi]

Originally Posted by gootjr

Hello Yoshi
Have you had any problems with the chains burning up using the Jeffco setup? With the small sprocket on the trans it seems like you end up with a fairly short chain. I had seen a car in the dezert who had one and added a oiling system to his car for that reason.

Thanks Bob

I've got one customer that has been getting his chains pretty hot, he just changed the gear ratio to slow the chain speed down, so we'll see how it does. Outside of him, my other customers have been fine.....

[vegastone]

The tranworks dif is 2495.00.I just bought one about three weeks ago.

[standfast]

Originally Posted by gootjr

Hello Yoshi
Have you had any problems with the chains burning up using the Jeffco setup? With the small sprocket on the trans it seems like you end up with a fairly short chain. I had seen a car in the dezert who had one and added a oiling system to his car for that reason.

Thanks Bob

It all comes down to how long you drive the car at high speed. Take any MIDI sized car and drive it at 80-90mph for about 10 minutes straight and the chain will be gone. The only fix that I have found is putting the chain in a oil bath. A little difficult to execute but it is the only effective fix. With the gear reduction where it needs to be to move the weight of the bigger cars the chain has to be running nearly twice the feet per minute as it would on a bike. No one rides a bike at 180mph for 10 minutes so they never really see the equivalent. I think a lot of folks don't drive at higher speeds for extended periods of time in their MC powered cars so many may not have experienced the issue but I will guarantee that all midi-sized cars will have this problem if pushed in that manor. Some people may not call it a problem because they use their cars at a more moderate speed and do short winded blasts and let off and cruise for awhile, then do it again...no problem. For me it has been a BIG problem out in the open desert roads. Like I said though, oil bath has been the only thing that has fixed it for me. Some people think that a longer chain or other things will fix that problem but I don't. Giving the chain a extra millisecond to cool off doesn't seem effective to me. There needs to be a medium there besides just air to keep the chain lubed up and at a stable temperature.

[bdkw1]

Originally Posted by vegastone

The tranworks dif is 2495.00.I just bought one about three weeks ago.

You might want to do a search and some reading on that........

[Horns]

What do you guys think would be the best differential for a street kart? the frame is going to be wide and the a arms are going to be short. I need reverse and I need brakes on both sides of it.

[Gene]

Least expensive is probably a honda auto transaxle.

[Horns]

Originally Posted by Gene

Least expensive is probably a honda auto transaxle.

Would that work out if I used a Hayabusa engine? How would the gearing work?

[Gene]

Yes. Look up Arrowhead's old fart from florence thread. He's the lead dog with this setup.

Gearing is widely selectable. I think he leaves the Honda in 3rd but can select other gears for different conditions. Probably rock crawler to Bonneville choices. Has reverse of course.

Two or three other members are doing it too.