Go Back  R/C Tech Forums > General Forums > Electric Off-Road
Can't remove pinion gear >

Can't remove pinion gear

Can't remove pinion gear

Reply

Old 08-07-2010, 06:01 AM
  #1  
Tech Adept
Thread Starter
 
Join Date: Jul 2010
Posts: 128
Default Can't remove pinion gear

Hey guys,

My pinion gear seems to be stuck on my motor shaft, and I can't get it off.

I've tried heating it first with a soldering iron, but it still won't budge.

Does anyone have any ideas that I could try?


Cheers
ReV:-O is offline  
Reply With Quote
Old 08-07-2010, 06:20 AM
  #2  
Tech Addict
iTrader: (5)
 
microbomb's Avatar
 
Join Date: Jan 2010
Location: Trackside, WI
Posts: 553
Trader Rating: 5 (100%+)
Default

Originally Posted by ReV:-O View Post
Hey guys,

My pinion gear seems to be stuck on my motor shaft, and I can't get it off.

I've tried heating it first with a soldering iron, but it still won't budge.

Does anyone have any ideas that I could try?


Cheers
happend to me too... first make sure the screw is 100% out then what I do is just take a pliers and get under the pinion and kinda use it as a lever to get it off
microbomb is offline  
Reply With Quote
Old 08-07-2010, 06:27 AM
  #3  
Tech Adept
Thread Starter
 
Join Date: Jul 2010
Posts: 128
Default

Yes the grub screw is out. There doesn't appear to be any corrosion, I did use red threadlock on the shaft to keep the pinion in place, and it seems to be proving more of a problem to remove than I thought...
ReV:-O is offline  
Reply With Quote
Old 08-07-2010, 06:41 AM
  #4  
Tech Master
iTrader: (52)
 
Join Date: Feb 2010
Location: Sanford, Fl
Posts: 1,704
Trader Rating: 52 (100%+)
Default

pliers would be your best bet, just yank that thing off, if you damage the pinion, no big deal, they arent expensive!!!
RB5SP is offline  
Reply With Quote
Old 08-07-2010, 06:48 AM
  #5  
Tech Adept
Thread Starter
 
Join Date: Jul 2010
Posts: 128
Default

I'm more worried about moving the shaft too much and causing damage to the motor!
ReV:-O is offline  
Reply With Quote
Old 08-07-2010, 07:04 AM
  #6  
Tech Champion
iTrader: (520)
 
Join Date: Oct 2008
Location: Minnesota
Posts: 7,377
Trader Rating: 520 (100%+)
Default

Had that happen before- does the pinion spin on the shaft at all?
flame56mx is offline  
Reply With Quote
Old 08-07-2010, 07:08 AM
  #7  
Tech Regular
iTrader: (13)
 
CSaddict's Avatar
 
Join Date: Apr 2009
Posts: 332
Trader Rating: 13 (100%+)
Default

Hmm thats a problem. Red lock tite needs to be heated, which isnt good and you cant really pry that hard on the end bell.....that sucks.

I did the prying on the against the motor. I knew it was not a good idea but I had no other choice. The motor is fine.
CSaddict is offline  
Reply With Quote
Old 08-07-2010, 07:09 AM
  #8  
Tech Fanatic
iTrader: (9)
 
B-FAST R/C's Avatar
 
Join Date: Jun 2008
Posts: 811
Trader Rating: 9 (100%+)
Default

Originally Posted by ReV:-O View Post
I'm more worried about moving the shaft too much and causing damage to the motor!
Very smart!
Try the heat again (soldering iron), it may take a good 20 to 30 seconds of heat to get the loctite to break down. Try to pull while it is still hot.
Did the pinion go on the shaft easy? If you used any force to push the pinion on it may be more than the loctite holding it on. May require carefull cutting to remove.

Blue Loctite is a better choice for our RC hobby.



.
B-FAST R/C is offline  
Reply With Quote
Old 08-07-2010, 07:14 AM
  #9  
Tech Champion
iTrader: (520)
 
Join Date: Oct 2008
Location: Minnesota
Posts: 7,377
Trader Rating: 520 (100%+)
Default

I had a prob once where the set screw created a burr on the shaft. It would spin free until I tried to pull it off the end, then it would stick. I put a few drop of oil on the gear and had a buddy spool the motor while I grabbed the gear with a vice grips, then pulled it off the shaft..
flame56mx is offline  
Reply With Quote
Old 08-07-2010, 07:42 AM
  #10  
Tech Adept
Thread Starter
 
Join Date: Jul 2010
Posts: 128
Default

Thanks for the replies.

I usually use blue loctite but it was coming loose due to the vibration of metal-on-metal gears, and 6s power.

I've held the soldering iron on the pinion/shaft for over 3 minutes, till it was burning hot, but still haven't managed to get it off.

Also tried WD-40, and some light motor oil but to no avail
ReV:-O is offline  
Reply With Quote
Old 08-07-2010, 07:45 AM
  #11  
Tech Regular
 
WillD's Avatar
 
Join Date: Jul 2010
Location: Barrie, ON, Canada
Posts: 407
Default

This is what you need...

http://www3.towerhobbies.com/cgi-bin...?&I=LXYCE5&P=7

WillD is offline  
Reply With Quote
Old 08-07-2010, 07:46 AM
  #12  
Tech Fanatic
iTrader: (5)
 
Join Date: Dec 2005
Location: Pacific Northwest
Posts: 863
Trader Rating: 5 (100%+)
Default

Maybe a slot car gear puller? I don't know if it's big enough but if you could get one on there that would work I bet. http://cgi.ebay.com/Parma-PSE-Gear-P...2?pt=Slot_Cars
jnyrcr is offline  
Reply With Quote
Old 08-07-2010, 07:55 AM
  #13  
Tech Champion
iTrader: (125)
 
Briguy's Avatar
 
Join Date: Aug 2006
Location: Ottawa , IL
Posts: 8,128
Trader Rating: 125 (100%+)
Default

Originally Posted by ReV:-O View Post
Yes the grub screw is out. There doesn't appear to be any corrosion, I did use red threadlock on the shaft to keep the pinion in place, and it seems to be proving more of a problem to remove than I thought...
There is your first and only problem . Why would you use thread lock on a pinion ? Just need to make sure you tighten the set screw , if kept coming loose then time for a new set screw .




jnyrcr , yes slot car gear pullers are way to small .
Briguy is offline  
Reply With Quote
Old 08-07-2010, 08:10 AM
  #14  
Tech Adept
Thread Starter
 
Join Date: Jul 2010
Posts: 128
Default

Well, I just managed to get it off.

Took a lot of brute force!
ReV:-O is offline  
Reply With Quote
Old 08-07-2010, 08:25 AM
  #15  
Tech Fanatic
iTrader: (5)
 
Join Date: Dec 2005
Location: Pacific Northwest
Posts: 863
Trader Rating: 5 (100%+)
Default

Originally Posted by Briguy View Post
There is your first and only problem . Why would you use thread lock on a pinion ? Just need to make sure you tighten the set screw , if kept coming loose then time for a new set screw .




jnyrcr , yes slot car gear pullers are way to small .
Didn't know, I do use loctite on my pinions on 1/8th scale as if I don't they tend to vibrate off, but I use blue not red, red is for stuff you really don't want to come off for a long time, blue not so much.
jnyrcr is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service