hb pro diff?
 

what comes with the hb pro diff if i get it from mike for $65? just wondering if it comes with any thing else cause towerhobbies as it for like $42. im a poor arse and need to save as much as i can on this truck of mine.

the ones from mike have the bearins, pinion gear, and shim i think. the ones from tower are just the diff, no pinion gear or anything.

cool tnx squee. ill have to order up a pair from mike when i get around to doing my diffs

The pro diff has a lower gearing than the other hb diff. It is 4.3 ratio verse 3.31.

The pro uses hardened gears inside the diff.

I don't think you get the shimms. just the diff, with bearings mounted and two bearings and the pinion gear.

i was typing that ratio in to the speed calc thing on the net and found something weird dont know if my be i made a mistake but with stock emaxx diffs emaxx trans in second and a 51tooth 16tooth spur an pinion with 1950 8 i came up with a rpm of 36274 and a top speed of 41 with a 5.5" tire with .5" of ballooning. but when i plugged in the 4.3 ratio hb diff i would need 24 tooth pinion to get the same top end. well theres 2 problems i see with that big of a pinion. 1 thats a lot of rotating mass for a motor to have to spin up and 2 mike doesnt even have a 24 tooth the biggest on there is 20 so how would you go about fixing this prob? obw i could be using the speed calc thing wrong to so im a little :025: just got up :027:

You are right to assume the pinion would need to be a 24 toother with the 4.3 diffs. The hb also makes the 3.31 diffs which would take abouta 18 or 19 to make it out right.

do they make the 3.31 ratio hardened as well? and can mike get um?

mike has the 3.31 ones in the store and they too are hardened http://www.rc-monster.com/proddetail...GY_DIFF&cat=47

One question. Are both the PRO and ordinary radial cut? Thanks.

Helical

:005: same difference, cheers Serum.

Will these fit straight into the E-Maxx? I keep shredding stock diffs on my HV E-Maxx :019: :031: .

No, they need a 1/8th FLM bulkless to use.

You can get aluminum cups for your hvmaxx with M3 screws. Since it's a rather weak setup, you won't be needing the 1/8th

You might as well consider getting the new differential cases from the T-maxx 3.3 it uses 4 instead of 2 screws. (traxxas 4980X)

I seen the ones with the 3MM screws, the stock screws in the nova diff cups we had went walkies! Will def. look into it.

Thanks