New stock e-revo weird gear noise
after roughly 30 minutes of pure fun on my first test with few 8.4 my new e-revo started to produce a weird noise from the gearing like a tooth was missing. This " STAC " happened once every 50 inches of run despiting it was via battery or pushed by hand...
Brought it to home I unscrewed motors, cleaned the gearings a while and then ri assembled them again. The weird noise seems to be gone except a fastidious noise during first very few inces of movement pushed by hand. Batteries connected and at least inside home tiny spaces it seems to run smoothly.
I also tried to fiddle around with the small clutch behind the main black gear..what is that ? It seems that playing with its inside screw forward or reverse the whole traction is softer or harder to move but maybe it is only an impression.
In your opinion what's the diagnose ?
What's the usage of softening or hardening the black screw of the plastic gear ?
Beeing not mothertongue sorry about my bad tech terms...
the clutch behind the main black gear (spur gear) is a slipper clutch. Its purpose is to allow a buffer between the power of your motors and the output of your wheels. why? It helps reduce rear tire spin(stripped gears, twisted outdrives etc). The slipper is adjustable on purpose, for the exact reason you noticed...harder or softer traction. For more info in this, go to page 24 of your owners manual and look for "Transmission Tuning".
As for the noise every few inches or the "stac"....you may have damaged one of your diffs, but its hard to tell without looking at the truck, or hearing what you hear. Any local boys you can take the truck to?
The noise came from the gearing close to the motors even if after having unscrewed and rescrewed the stock Titans the noise has gone except for very first inches but it is no more a " STAC " but a " grrrrr " instead. Except that it runs fine forward and reverse so I tend to be pretty sure the differentials and the central axle are fine..( I have also checked the little door on the bottom of the chassis and the hidden torque gear below is fine and produces no noise..I know that is hard to explain here....It is now only and stricltly related to first incees of run then it runs smoothly...
keep running it
Run it until it breaks, then you will know for sure what it is
you know, I first read that and my initial thought kinda made me scratch my head....but you actually have a point. The parts for the e-revo are fairly cheap, so replacement shouldnt be too much money. Not a bad Idea.
Originally Posted by byron555