Upper Link Spacing & Diff Pinion Angle

[mtec]

Hi, Just wondering if there is a rule of thumb for pinion angle? I know it tucks the drive shaft away and increase ride height. Does it have any effects on the performance of diff when to much angle is used, I've added 11mm of spacing to the upper rear link, and have 6mm in the front Should it be setup front and back with equal pinion angles? Is there a there a maximum upper link spacing? Any help would be much appreciated.

[rugerboy]

this may be argued but you ideally want the output shaft on the trans. and the pinion parallel to each other. while tipping the pinion increases ground clearance the mixed matched angles create a bind on the u-joints on the drive shaft, thus you would need a cv joint.... and so far I have not seen one for rc. so a little tip would be ok but not much. hope this helps.

[mtec]

The yokes on the drive shaft aren't binding, would you match front and back angles?
Is there a maximum degrees ?

[moabax]

Just as long as the driveshafts dont bind during full droop or compression you are fine. As far as a cv shaft, our little crawlers dont have the weight and torque to make a severe vibration as you would normally see in a 1:1 rig. I have my pinions both pointing directly at the tranny outputs at ride hieght. If you want to have the front lower you can, as it is less likely to get hung up on rocks. The rear you want to make sure it is protected if you are running the stock plastic shafts. They will get chewed up on the rocks pretty quick. The best thing to do is get a set of MIP shafts and point them at the outputs. They are super strong so you dont really have to worry about them breaking.Good luck, I hope this helps.

[2JSC]

The front you don't want to play with too much as it will mess with your steering and cause other issues. Keeping the front knuckles verticle should be fine. The rear axle is pretty much fair game, but keeing the axle's pinion pointed at the trans's output would be best. But as long as there is no binding in complete suspension travel, you should be good.

[mtec]

Thanks for the reply's!
I added 70mm rods to the upper links front and back and drilled new holes,
I have a 6mm spacer in the front upper link diff mount and 11mm in the rear.

I will look into some HD Drive shafts as mentioned also.