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Stuck pinion gear

Stuck pinion gear

Old 12-19-2009, 11:15 AM
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Default Stuck pinion gear

My pinion is stuck on my motor, set screw is almost rounded, any body have any ideas for getting this off.
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Old 12-19-2009, 11:18 AM
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Heat it up to break the thread lock if you used any, then use a GOOD new hex wrench not an allen key.

If that fails, drill out the set screw or call the LHS to see if they have a pinion gear puller that you can use.
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Old 12-19-2009, 11:20 AM
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all else fails you can cut it off with a dremel. Just be careful not to harm you shaft inthe process.

Do you have access to a drill press?
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Old 12-19-2009, 11:34 AM
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no drill press, i'll try the to heat it up to break the thread lock. I would hate to try and cut it off, since this is a brand new tekin 2050kv motor.
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Old 12-19-2009, 11:44 AM
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Just pry it off... everybody thinks they are so tight on the shaft.. but in reality, they are barely on there.. the set screw has such a small point of pressure on the shaft and merely keeps it from rotating. I've done this many many times over the years of racing..

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Old 12-19-2009, 11:46 AM
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have you tried a pinion puller yet? you can find them on ebay by doing a search in the rc section for "pinion puller". looks like they run around $14 shipped for a mini and $16 shipped for a standard. worth a try to save from cutting.
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Old 12-19-2009, 11:50 AM
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Worst case scenario is that you messed up the shaft and have to replace the rotor. Tekin will sell you one but I don't know how much a T8 rotor would cost. The 1/10 scale Redline rotors are $39.00.
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Old 12-19-2009, 12:11 PM
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Thank you all for the help, heat and a unused hex driver did the trick on both set screws.
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Old 12-19-2009, 12:39 PM
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Originally Posted by Gopher15
Thank you all for the help, heat and a unused hex driver did the trick on both set screws.
Sometimes I know what I'm talking about. (Don't tell the GF, she thinks I'm a dork.)
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Old 12-19-2009, 01:32 PM
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Invest in a set of good drivers like the MIP Thorp drivers. With mine I can break blue loctite on pinion set screws. Allen wrenches are poor at best.

Glad you got it off.
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Old 12-19-2009, 01:36 PM
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Originally Posted by Duster_360
Invest in a set of good drivers like the MIP Thorp drivers. With mine I can break blue loctite on pinion set screws. Allen wrenches are poor at best.

Glad you got it off.
MIPs are very good and also Hudy, AE and Losi. Integy on OFNA are just so-so.
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