Differential Gear

[Hussein Fahmy]

Dear all
We are a team from Cairo University, this is actually our first year to enter the competition. We have done some researches and decided to work with an engine Honda CBR 600 RR. But we are clueless about the differential gears... Open diff., LSD, Spool diff... the options are too many, Please help us.

Hussein Fahmy
Cairo University
Engine & Gear train Leader

[Wesley]

First off, define the differences between each. You need to learn what an open diff is (Torque Bias Ratio of zero) a Limited slip diff (variable TBR) and a spool (TBR of infinity.)
Torque bias ratio is defined as the ratio of torque delivered to the high-traction wheel to the torque delivered to the low-traction, with the limit always set at by the low-traction wheel. Thus, the torque that the high-traction tire generates is the low-traction torque times the TBR.

Decide what kind of TBR you want/need, how it will affect your handling/power delivery characteristics, and that will narrow your choice of differentials - from there, decide what's available, what you can afford, and what you can package.

[scotty young Taylor Race]

Hussein,

Here is some reading for you...hope this helps

http://www.taylor-race.com/pdf...ng_differentials.pdf (http://www.taylor-race.com/pdf/understanding_differentials.pdf)

scotty
Taylor Race Engineering
scotty@taylor-race.com

[RollingCamel]

I was surprised how other teams' diffs were much smaller than ours. The Quaife was one hell of a beast. If we really want to be competitive we should look into lighter alternatives.

(Waiting some marketing info from Scotty http://fsae.com/groupee_common/emoticons/icon_wink.gif )


For God's sake Hussein if you are reading this then check your damn private message inbox and give me a call. I can help you! You don't need to do our mistakes again and I'm not available for long because I'm graduating!!

Eid Mubarak and looking forward for your call.

[Steel Monger]

The Quaife IS a Heavy option but you could make a custom housing for it.

[RollingCamel]

We don't have the proper materials and heat treatment in our market.

[BMH]

Originally posted by RollingCamel:
I was surprised how other teams' diffs were much smaller than ours. The Quaife was one hell of a beast. If we really want to be competitive we should look into lighter alternatives.


Check out the Honda Cam and Pawl Differential. It is pretty light and compact compared to other differentials on the market. There is info on it here in the forums.

[RollingCamel]

It wasn't easy to find and the Honda dealer requested 1000 LE down payment before searching worldwide and we have to go to Cairo to pay. Quite stupid customer service.

Finding an online shop shipping to Egypt is quite a problem too.

[happypranav]

hey you can use torsen differential cheap light and efficient..

[Adambomb]

http://img820.imageshack.us/img820/2688/holy20thread20resurrect.jpg