servo help

[scooter4478]

i just did a upgraded to a hi-tec 645mg on the steering servo and moved the SF-2 to throttle and brake. the screw on the SF-2 that holds the arm on has stripped. any suggestions on what to do now? thanks

scooter4478

 

[SDMorris]

The head of the screw stripped? Try taking a little bit larger screwdriver, and giving it a few good pounds onto the top of the screw, then push down with all your might and turn. If it comes out, the find a screw about equal length with the same thread pattern and use it instead.

 

[scooter4478]

no the problem is in the servo it's self. the screw just spins when i try to tighten it. what can i do to fix the problem.

 

[X]

you could rebuild it. But I consider this one of those special times where something has broken and now you have the good reason to upgrade!

 

[SDMorris]

Oh, sounds like your plastic servo horn is stripped on the inside. Get a Ofna universal servo horn set.

 

[Keithv]

You might be able to use a slightly larger screw. Or you will have to replace the gears on the servo. I think they sell a metal gear upgrade for it, I know Futaba has one but I don't know if the gears would be the same size or not. Might be cheaper and easier to just replace the whole servo

 

[Larsenracing]

Just put some superglue on in the hole but not to much and screw it in leave it alown for a while so it can dry then reinstall it. The reason you want to use just a touch is because you don't want to glue the servo horn on. Its worth a shot anyway. Remember that screw doesnt do that much as it really doesnt have alot of force on it.

 

[scooter4478]

thank you all for your quick replies. if i were to upgrade the servo what would work well with the hi-tec servo i have now?

 

[oregonmud]

I like the HS 5645MG for steering and the HS 645MG for throttle/brake. You get full torque just off center with the 5645 but not with the 645. That way the steering holds better in corners.

 

[XXX]

You could also try a slightly larger screw "thread that is" and wrap it with thread tape. This may hold you up long enough until you get a replacement servo. Worth a shot.

 

[oregonmud]

A bigger screw should work for now. Just make sure its not too long. You don't want it to bottom out and bind the gears and motor.

 

[scooter4478]

thanks for all your help but i think i will do oregonmud's idea and upgrade the servo.