surferdude

Got a Gypsy ARF for quick and easy cruising. I swapped a HiMax 4100 brushless into the gearbox, using the pinion from the brushed motor. All else is stock, so only using a 2 cell lipo. Worked great on the bench, but at the field (naturally) the pinion slipped so the prop won't work. That was before the maiden flight.
I am looking for a quick fix for the spinning pinion, CA glue, epoxy, solder (worried about heat damage to motor).
If all else fails, I'll put in an outrunner. But, I am first looking for the easy fix so I do not create yet another Frankenstein.
Suggestions?

soarhead-RCU

Have used "Locktite" before, worked for me. Scuff up the shaft a little with sand paper and then apply and slide on the gear. I used the red that was handy but I think I read that it wasnt the best for this application. Go to their website and they have all the formulas and the best usage.
Good Luck
Bob

surferdude

Bob, from your suggestion, I went on the loctite site. If I am understanding the specifics, CA glue has the same shear strength for bonding cylindrical metals as their other bonding agents, but a temperature rating up to 180 F (CA) vs 300 F for other bonding materials. Unless I overstress the motor, I should stay below 180 degrees F. I will try CA glue after cleaning and reinstalling the pinion gear.
Thanks, hoping for a thumbs up.

Thayer

You definitely want to clean the shaft as well as possible. I would recommend wiping with acetone and then scuffing with fine sandpaper before adding the CA. Also "swish" the pinion in acetone as well.

Thayer

Jagzilla

Green Loctite 680 is what you want to be using.
Jag

Thayer

Agreed. Locktite is better than CA.

Thayer