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-   -   Brushless Wheelie King, Help Needes (http://www.rccrawler.com/forum/hpi-wheely-king/589770-brushless-wheelie-king-help-needes.html)

Nastybogging 09-20-2017 09:38 AM
Brushless Wheelie King, Help Needes
 
Hello fellow rccrawler members, I apologize if im posting in the wrong forum. I have a HPI Wheelie King with a Traxxas Velineon vxl-3s brushless system in it. Ive also changed out the stock plastic gears for hardened steel ones, and replaced the axles with integy metal hop up ones that were recommended for it. I can have either the front or rear drive shaft attached to a axle. But after I attached both axles, there was a clicking sound coming from the rear end when applying the throttle. After taking apart the rear axle, i couldnt see any damage to the diff gears or the axle shafts. Any suggestions on what the clicking sound could be or on how i could fix it so i can run 4wd instead of 2wd?

JatoTheRipper 09-20-2017 11:07 AM
Re: Brushless Wheelie King, Help Needes
 
Sounds like the gears are slipping. Shimming might help so the gears don't "spread" apart under acceleration. The shims help keep a good mesh between the gears.

That's generic advice as I have no experience with the WK.

OSRC 09-20-2017 05:46 PM
Re: Brushless Wheelie King, Help Needes
 
There is a clicker slipper inside the transmission. You'll hear it skipping for sure every now and again under brushless power. Won't hurt anything, but will eventually wear down and seriously slip after a while. There used to be a few transmission gear sets out there that eliminate that slipper. Not sure if they are still available or not, might have to do some digging. RC4WD and HR both used to make them.

Nastybogging 09-20-2017 08:16 PM
Re: Brushless Wheelie King, Help Needes
 
Quote:
Originally Posted by OSRC (Post 5750335)
There is a clicker slipper inside the transmission. You'll hear it skipping for sure every now and again under brushless power. Won't hurt anything, but will eventually wear down and seriously slip after a while. There used to be a few transmission gear sets out there that eliminate that slipper. Not sure if they are still available or not, might have to do some digging. RC4WD and HR both used to make them.
The transmission gear set i have, eliminated the slipper. Its an RC4WD set within an integy tranmission case.

lonleycreeper 09-20-2017 10:48 PM
Re: Brushless Wheelie King, Help Needes
 
Quote:
Originally Posted by JatoTheRipper (Post 5750194)
Sounds like the gears are slipping. Shimming might help so the gears don't "spread" apart under acceleration. The shims help keep a good mesh between the gears.

That's generic advice as I have no experience with the WK.
Solid advice, I had a similar issue With a 6x6 build using wk axles. Turned out the center housing was pulling apart under severe loads, allowing the pinion to slip on the ring gear, thus causing a clicking under load. My solution was to run 1.25" long 4\40 bolts through the housing and throw a nut on the end.

OSRC 09-22-2017 06:18 AM
Re: Brushless Wheelie King, Help Needes
 
Quote:
Originally Posted by Nastybogging (Post 5750371)
The transmission gear set i have, eliminated the slipper. Its an RC4WD set within an integy tranmission case.
Whoops! I totally misread your first post - my apologies!


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