Go Back  R/C Tech Forums > General Forums > Electric Off-Road
help traxxas slash 4x4 >

help traxxas slash 4x4

help traxxas slash 4x4

Reply

Old 03-14-2011, 01:05 AM
  #1  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default help traxxas slash 4x4

Ok so I have a traxxas slash 4x4 that is driving me crazy. It was running like a champ until about two weeks ago, it still runs but any time I give it full or even three fourths throttle it squeals like a banshee.i have a two month old center dif with maybe 10 bashing sessions on it, I have read around about some possible causes, I didn't think it was the gear mesh due to it suddenly starting, but some people had that issue so I remeshed the gears to no avail. I replaced the driveshaft bearing and the motor mount, and even the drive shaft, I'm very frustrated idk what else it could be. any body have any ideas or similar experiences?
And187 is offline  
Reply With Quote
Old 03-14-2011, 01:11 AM
  #2  
Tech Addict
iTrader: (51)
 
GoatsnBros's Avatar
 
Join Date: Oct 2010
Location: San Tan Valley, AZ
Posts: 511
Trader Rating: 51 (100%+)
Default

I'd try to isolate it... have you taken the motor out and just run it standalone?
Does it do it when you just roll the truck without the pinion/spur meshed?

If it does - I'd remove the center driveshaft and see if its in the front or rear.
GoatsnBros is offline  
Reply With Quote
Old 03-14-2011, 01:33 AM
  #3  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default

Ok its not the motor, when I roll it with no spur pinion mesh I don't think I am getting it fast enough because it doesn't make the noise. But I did notice that my rear diff seems off, both wheels seem to spin free independently but if you spin one the other doesn't spin by itself like the front difc. but they don't bind when I roll them together. is this normal?
And187 is offline  
Reply With Quote
Old 03-14-2011, 01:34 AM
  #4  
Tech Regular
iTrader: (4)
 
savtraxx's Avatar
 
Join Date: Sep 2008
Location: Newcastle AUS.
Posts: 297
Trader Rating: 4 (100%+)
Default

slipper loose?
savtraxx is offline  
Reply With Quote
Old 03-14-2011, 01:35 AM
  #5  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default

No slipper I have a center diff
And187 is offline  
Reply With Quote
Old 03-14-2011, 01:46 AM
  #6  
Tech Addict
iTrader: (64)
 
macavant's Avatar
 
Join Date: Sep 2010
Location: RC dojo
Posts: 705
Trader Rating: 64 (100%+)
Default

My Slash had a similar squealing noise - it was one of the bearings that held the rear diff. I had to remove the seal/clean/re-lube. Much more quiet now.
macavant is offline  
Reply With Quote
Old 03-14-2011, 01:48 AM
  #7  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default

I literally just put a new one in yesterday, in the rear that's why I am getting so frustrated
And187 is offline  
Reply With Quote
Old 03-14-2011, 01:51 AM
  #8  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default

Actually I just realized there is one that is between the rear and center diff, not the one right by the motor but when you pull the center diff out the bearing that stays in the rear diff opening?
And187 is offline  
Reply With Quote
Old 03-14-2011, 02:02 AM
  #9  
Tech Regular
iTrader: (4)
 
savtraxx's Avatar
 
Join Date: Sep 2008
Location: Newcastle AUS.
Posts: 297
Trader Rating: 4 (100%+)
Default

how hot does your motor get
might need a new motor , happened to my xcelorin motor.
savtraxx is offline  
Reply With Quote
Old 03-14-2011, 02:10 AM
  #10  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default

I don't have a temp gun but I do check with my finger hold it on for 3 seconds and it doesn't feel hot. But it makes the noise from the start, I can accelerate on a fresh run and it does it instantly with the motor still ice cold, and once it warms up too.
And187 is offline  
Reply With Quote
Old 03-14-2011, 02:27 AM
  #11  
Tech Regular
iTrader: (4)
 
savtraxx's Avatar
 
Join Date: Sep 2008
Location: Newcastle AUS.
Posts: 297
Trader Rating: 4 (100%+)
Default

so is it different when its warm or hot?
it will act different if its hot or cold i mean?
if so id say your motor is toast for sure.
only thing that moves and heat effects...
savtraxx is offline  
Reply With Quote
Old 03-14-2011, 02:42 AM
  #12  
Tech Regular
Thread Starter
iTrader: (20)
 
And187's Avatar
 
Join Date: Apr 2010
Location: Salem, Oregon
Posts: 285
Trader Rating: 20 (100%+)
Default

It's the same no matter hot warm or cold
And187 is offline  
Reply With Quote
Old 03-14-2011, 04:44 AM
  #13  
Tech Regular
iTrader: (4)
 
savtraxx's Avatar
 
Join Date: Sep 2008
Location: Newcastle AUS.
Posts: 297
Trader Rating: 4 (100%+)
Default

get a video and upload it to youtube, ill help you from there
easy problem to fix if i had it in front of me
savtraxx is offline  
Reply With Quote
Old 03-14-2011, 08:47 AM
  #14  
Tech Addict
iTrader: (64)
 
macavant's Avatar
 
Join Date: Sep 2010
Location: RC dojo
Posts: 705
Trader Rating: 64 (100%+)
Default

Originally Posted by And187 View Post
Actually I just realized there is one that is between the rear and center diff, not the one right by the motor but when you pull the center diff out the bearing that stays in the rear diff opening?
yup that's the one - inside the diff case facing the slipper/center diff.
while you're in there, check the output bearings as well left/right of the diff (along with the fluid in the diff itself).
macavant is offline  
Reply With Quote
Old 03-14-2011, 05:58 PM
  #15  
Tech Adept
iTrader: (11)
 
ericg's Avatar
 
Join Date: Sep 2009
Location: Fredericktown, MO
Posts: 133
Trader Rating: 11 (100%+)
Default

The only time mine squeals is when I put a small pionion gear in it. (9 tooth) It does not affect the truck in any way at all, just makes noise.

My only suggestion would be to loosen the motor from the spur gear and run just the motor. If no noise, remove the driveshaft, mesh the pinion and spur, and run the motor and rear-end. If no noise, put driveshaft back in, and run the entire car. This may help you to isolate the area.??

Whenever I took the front and rear diff off my 4x4 slash, there was hardly any grease in them, and I had not run it very much. It was not making any noise though.
ericg is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service