This was posted on R/C Nitro Talk about a question I had on springs and shoes, this was the answer:
Posted by CorradoPsi,
be carefull on swaping around clutch components.
always use the same brand shoes, springs, flywheel, clutchnut. some brands, Kyosho in particular, use different size diameter pins and slightly different clutchbell ID's. these differences can cause problems with spring breakage, and hanging clutches if the wrong components are mixed. some brands you can mix certain items with no problem, but thats a list i dont care to type up right now.
you can never use a bell for carbon or any organic shoes thats run aluminum in the past, it will eat the carbons for breakfast.
never remove the black buildup from the face of your aluminum shoes or the inside of the bell, its supposed to be there and helps extend shoe wear.
always debur the edges of your aluminum shoes when they start to mushroom, a simple trim with an x-acto knife usually does the trick.
never use 1.1 springs, they are so stiff that they never allow a clutch to fully engage and this wears out the shoes early, overheats the bell, and wears out bearings fast.
when going from a organic shoe to an aluminum shoe, clean out the residue in the bell with sandpaper.
if you need a later engagement than a 1.0 spring provides lighten your shoes by either cutting 1-2mm of material off of the tips of every shoe, or drilling 1-2 1mm holes in each shoe.
never allow your shoes to wear to the point where the spring touches the bell, this will gouge it and you will have a junk bell.
aluminum shoes = hard engagement, medium wear, higher maintainance
carbon (black) shoes = average engagement, medium wear, low maintainance
rulon (red) shoes = hard engagement, high wear, low maintainance
teflon (white) shoes = light engagement, low wear, low maintainance
Chris A. wrote:That I can't believe. Clutch never fully engaging with 1.1 springs with the kind of RPM these race engines turn at.
Yeah, dpends what hes using for a motor. I know breaking in the RB with the 1.1 and aluminium shoes, the car wouldnt move The motor was so rich it wouldnt turn enough rpm's to engage the clutch.
I just posted this as a guide for people to go by. I know I proably wont see aluminum shoes in my car again.......unless we make a road trip Chris
The motor was so rich it wouldnt turn enough rpm's to engage the clutch.