project 3905 e maxx

[Rivermaxx]

You really think going 40 mph puts more stress on a tranny than gearing it to go 80mph? Yea that 80 mph pass upside down I hit a road reflector and it sent the truck flipping. Did you see the 75mph wheely? If any thing puts alot of stress on a tranny that should of done it.
I haven't tried those ti gears out yet and I only have about $40 invested in them (got them off ebay). I figured I would try them out when my others failed but havent come to that point yet. Your steel gears will most likely wear the same as those titaniums gears if they are not case hardened unless they have constant lube to prevent failure. Any thin light weight synthetic oil would probably be best. The thick sticky stuff will probably just slow you down and burn up your esc because of the trans acting like a hydralic pump.The biggest problem with those stock trannys is the shifting causes failures. Gorillamaxx saw this and adressed it with the single speed G1 conversion which pretty much make the trans bullet proof. With brushless power you dont need the 1st gear and its not really low enough to do real crawling anyhow. My other g-4maxx creeps pretty good while in second with the lower geared 1/8 scale diffs and 3905 revo tranny but I built it as a racer not a crawler.

These are my custom titanium gears( I believe only 5 sets ever made) with one UE gear(top left) that is in use now. Quite a bit weight difference between those and steel. Aluminum is the worst material to use for gears as you found out but the ultramaxx gears are made from a harder 7075 billet aluminum with a brass alloy idler and last forever with proper maintenence.


As far as the diffs failing do yourself a favor and put some 1/8 scale diffs in(like UE or FLM) and never look back. I broke stock diffs with nitro power all the time.