blindfly

almost lost my plane because a servo head bolt came loose during flight.
(31% edge, left ail, landed perfectly w/one ail,fut 9451)

spoke to some friends that told me that this is common to happen on metal geared servos where the final gear is metal.
the servos head bold tend to get loose.

has any one experienced this?

is it o.k. to locktite it or would the thread lock damage the servo?

if the next one to come out is an elevator half i could get verry messy...

thanks

Gabi

blvdbuzzard

I use lock washers under my MG servo arms. I think you could use teflon tape too. One of the best liquid thread locking compounds I have used is called Vibra-tite. It is a reusable type of thread locker. It goes on a little like liquid rubber but does not really harden.

Dru.

Tired Old Man

My Feedback: (1)

If you are using a servo that uses a machine screw at the top of the servo output shaft instead of the coarse thread screw as used on standard servos, if you do not Locktite the screw IT WILL COME OUT!

The metal gear and digital servos that use machine screws absolutely require that you use additional methods to retain the screw other than just getting the screw tight. Too many people, including myself, have learned this lesson the hard way not to pass it along again.

Adding a lock washer by itself will not be enough. Over a period of time IT WILL LOOSEN. Use a small amount of green or blue Locktite, or some other thread locking compound. DO NOT USE RED!!

rcflier_gi

My Feedback: (2)

Blue Loctite (or equilivalent) on metal gear servos is required

blindfly

thanks a lot guys, blue locktite is just what i had in mind for this, just wanted to make sure is won't screw up the servo for some reason.

Nogyro

My Feedback: (10)

FWIW, I flew a Giant Stinger for 3 years with Hitec 645mg servo's on it. I never put locktite on the servo arm screw, and they never came loose. Nothing used but the lock washer that came with the servo's. Go figure, I wish my wing bolts on my Wild Hare Edge stayed tight this long.

bob_nj

My Feedback: (62)

I got a tip from Blaine Austin's website a couple of years ago that works for me. He uses RC56 on the screws and it works fine.
After all, we just want to keep the screws from vibrating out, not weld them in. Once they are tightened with the RC56 they seem
to be honkey dorey

JohnVH

My Feedback: (38)

I use blue locktite on them

JoeAirPort

My Feedback: (41)

Is blue lock tite ok on servos that don't have metal gears? Like the 635 Karbonite geared?

JohnVH

My Feedback: (38)

probably wouldnt use locktite on those. if you were worried maybe a dap of CA on the screw?

JoeAirPort

My Feedback: (41)

Ooops, I already used lock tite on them. It shouldn't hurt it. I was so busy trying to finish my Kangke CAP232 120 that I didn't go online all weekend....

(maybe I should change that to say I didn't go online "much" this weekend)

ChuckAuger

My Feedback: (12)

I think there was a warning about Loctite on Karbonite gears. Seems there is a chemical reaction between the Loctite and the plastic that renders the plastic brittle.

JohnVH

My Feedback: (38)

Locktite should be for metal to metal IMO. Use something else for plastic and that karbonite