Mopar Muscle Association UK

after some mopar advise for a non mopar diff, cos your all good on here at busting stuff, me included.
wanting some 3.0 gears for my falcon, 28 spline ford 9"
http://www.summitracing.com/int/search/ ... tio/3-00-1

motive gear = strange eng ? yes therefore 3 options for motive @ 3 different prices ?
and whats stronger 30/10 teeth or 39/13 teeth
what would you buy ?
opinions please

Nice one Andy. Was looking earlier for mine and was thinking the same !!
Motive seem a good price. Yukon are pricey.
Which way to go ?

Andy,
I am No real expert in this area, my last 3 sets of gears have been Richmond & all have been great. I am sure Strange are equally as good, maybe better.

I personally think half the battle is the set up...

Well in a diff you only drive about 3 teeth at any one time

i'd guess
bigger teeth = stronger but harder to turn over = more parasitic loss each tooth slides further into mesh with its partner = more friction

smaller teeth = smoother and easier to turn but thats 3 smaller bit of metal you are engaging at each instant

think it works the other way for splines

all engaged so the more there are the more surface of spline drive face there is... up to a point dependent on the material, sure hardness and dutctile nature comes into it...soft and you'll rip off the spline


however i am surprised that it isn't a hunting tooth design. i.e mis matched odd and even ring vs Pinion so all teeth mesh at some point with all other teeth rather than the same set.

with the former a fault with 1 tooth gets worn flat by all other teeth on the oposite gear resulting in a minor impact on all of them but distributed over 30 or 39 teeth

with matched teeth a fault would Bananarama! the same tooth on the oposite gear and stamp a similar fault meaning 1 damaged tooth on the pinion always meet 3 damaged teeth on the ring gear.


Dave