02-24-2008 08:29 PM

Eric Yahrmatter

Re: pic: Team 34 - Differential

I see clutch plates...limited slip differential?

02-24-2008 08:36 PM

AdamC

Re: pic: Team 34 - Differential

Looks like it to me. Very nicely manufactured!

02-24-2008 08:41 PM

Mike M.

Re: pic: Team 34 - Differential

Looks great. good job guys. Just one question why did you use helical gears?


Mike M.

02-24-2008 08:56 PM

s_forbes

Re: pic: Team 34 - Differential

Nice work! I was really hoping some team with amazing machining capabilities would make an awesome ackermann set up, and you guys pulled it off very well.

02-24-2008 09:10 PM

Ed Sparks

Re: pic: Team 34 - Differential

Yep. The clutch torque is adjustable. Just dial in the torque you want and off you go. It's very nice. (Available from Mcmaster-Carr)

02-24-2008 09:17 PM

Ed Sparks

Re: pic: Team 34 - Differential

The truth is they were lying around the shop from a past prototype and since it's still a COTS part, we used them. These are actually "Spiral Bevel Gears" from Boston Gear. I was inspired by the Lego Differential in case your thinking there's something about this design that looks familiar.

02-24-2008 09:27 PM

psyco_klown

Re: pic: Team 34 - Differential

Very nice! Whats the part number for those spiral gears. Those look perfect for a differential project im working on.

02-24-2008 09:45 PM

Ed Sparks

Re: pic: Team 34 - Differential

This design uses:
(2) LSA110Y-R (Right Hand Spiral)
(2) LSA110Y-L (Left Hand Spiral)

Both are 18 tooth, 18 DP spiral bevel gears.

02-24-2008 10:16 PM

techtiger1

Re: pic: Team 34 - Differential

Mr.Sparks as a fan of drive systems, I am quite impressed with what you have done here looks great. Will 34 be attending the Palmetto if so I will take a look at it there if not Championships for sure. Good luck this year.

-Drew

02-24-2008 10:41 PM

Aren_Hill

Re: pic: Team 34 - Differential

should've taken it one step further with 4wd, then maybe 1 step past that with 4wd 4wheel steering

i wonder if anyone this year is upscaling and high performance rc car 4wd and full independent suspension, that would be awesome to watch drive.

i love the limited slip differential

02-24-2008 10:41 PM

Ed Sparks

Re: pic: Team 34 - Differential

Unfortunately, we will not be at Palmetto this year. We are attending Peachtree and Bayou.

02-24-2008 10:47 PM

squirrel

Re: pic: Team 34 - Differential

How difficult would it have been to integrate the clutch plates into the diff housing, like in a normal automotive limited slip rearend? Seems like a lot of extra hardware there....

(when we were considering Ackermann steering, we were planning on using a software differential)

02-25-2008 10:15 AM

Ed Sparks

Re: pic: Team 34 - Differential

I'll probably work on this during the off season. This was a simple way to go given the time constraint and limited resources.