""Locktite on Metal gear servo screws, don't skip this step""
09-02-2012, 08:27 AM
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""Locktite on Metal gear servo screws, don't skip this step""
I took a new 50cc Pitts out to a fun fly yesterday,I wasn't going to fly her but more of a show and tell and to runthe new motor a little..
I always use locktite once I am all done adjusting my servo arms, just a small drop on the screw.. Well yesterday was proof that you better not skip this step.. I didn't have any on mine, I knew I wasn't flying her and still need to take the arms off for final tweaking.. While the motor was running I did a range check and the top right ail. locked in the down position. I did a quick check and the screw had came out far enough for the arm to slip off! Now this was no big deal, but had it been in the air, it would have been a huge deal as it was locked in full deflection... This servo screw did it again even after I tightened it up so I need to see if there is something else going on with it... Any way, use locktite on your MG servo screws!
Nothing happened to me, but if this thread saves one person their pride and joy or someone from getting hurt from a out of control airplane, then it was worth the time it took to type it!
I always use blue (medium strength) on mine, if you have a better tip or way you do it, would love to here about it...
Jimbo
I always use locktite once I am all done adjusting my servo arms, just a small drop on the screw.. Well yesterday was proof that you better not skip this step.. I didn't have any on mine, I knew I wasn't flying her and still need to take the arms off for final tweaking.. While the motor was running I did a range check and the top right ail. locked in the down position. I did a quick check and the screw had came out far enough for the arm to slip off! Now this was no big deal, but had it been in the air, it would have been a huge deal as it was locked in full deflection... This servo screw did it again even after I tightened it up so I need to see if there is something else going on with it... Any way, use locktite on your MG servo screws!
Nothing happened to me, but if this thread saves one person their pride and joy or someone from getting hurt from a out of control airplane, then it was worth the time it took to type it!
I always use blue (medium strength) on mine, if you have a better tip or way you do it, would love to here about it...
Jimbo
09-02-2012, 04:25 PM
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RE: RE:
ORIGINAL: speedracerntrixie
I 100% agree here but warn that if you are using plastic servo arms, the locktite can affect the plastic. It's always best to do a test first or better yet take care not to get the locktite on anything plastic.
I 100% agree here but warn that if you are using plastic servo arms, the locktite can affect the plastic. It's always best to do a test first or better yet take care not to get the locktite on anything plastic.
09-02-2012, 04:27 PM
#6
RE: RE:
ORIGINAL: RC_Fanatic
Even if you do not get it on the plastic, the fumes from it will affect the plastic. Found this out the hard way!
ORIGINAL: speedracerntrixie
I 100% agree here but warn that if you are using plastic servo arms, the locktite can affect the plastic. It's always best to do a test first or better yet take care not to get the locktite on anything plastic.
I 100% agree here but warn that if you are using plastic servo arms, the locktite can affect the plastic. It's always best to do a test first or better yet take care not to get the locktite on anything plastic.
09-02-2012, 05:08 PM
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RE: RE:
I have heard the ill effects LT can have on plastics, but never had any problems.. Can iteat glass filled nylon? Is there any brand of LT that doesn't hurt plastic and does red and blue both do it, or just red?
09-02-2012, 06:08 PM
#8
RE: RE:
To be honest when using metal geared servos I always use aluminum servo arms these days. Back a decade or so when I did use metal gears and the Dubro glass filled plastic arm I would use a drop of med CA. I too would chuck the phillips head screws and replace them with socket heads.
09-02-2012, 06:13 PM
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RE: RE:
I have always used RC56 or Tacky Glue as a thread locker on all servos. Doesn't cause problems with nylon or plastic arms or gears and doesn't vibrate loose, but still allows the servo arm screw to be removed when necessary...
09-03-2012, 01:06 PM
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RE:
This summer my buddy was doing a taxi test on his newly rebuild 100" 109 when one of the aileron servo arm fell off. Yep it was metal arm, metal gear. Good thing he did the taxi test first. That would have been a serious blow to moral if he was up in the air. I don`t like using locktite because the screws are a pain to get loose. I use silicon, works well. I will also get some of those 2.5mm bolts. Much better than the philips head.
09-04-2012, 10:07 AM
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RE: RE:
ORIGINAL: BarracudaHockey
Not all servos use 2.5mm screws so be careful. Hitec metal gear servos use 2.6mm
Not all servos use 2.5mm screws so be careful. Hitec metal gear servos use 2.6mm
Jimbo
09-04-2012, 02:40 PM
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RE: RE:
Don't get Locktitie anywhere near plastic or nylon. It will turn it into a crumbling mess. I know, I used Great Planes Blue on a nylon motor mount for a E-flite Apprentice. I just used it on the metal screws and nuts that went thru the mount. The next morning my motor had literally fallen off the plane and onto my work bench. The thread locker had turned the plastic into crumbling nothing.
09-05-2012, 08:06 AM
#18
RE:
Maybe not
Servo City sells a cap head "Servo Screw" @ $.45 each,,, those are most likely 2.6 and why they cost much more
All I am saying is what has been working for me. I've been using them in the 59 and 79 series as well as the 56 series. never had an issue.
Servo City sells a cap head "Servo Screw" @ $.45 each,,, those are most likely 2.6 and why they cost much more
All I am saying is what has been working for me. I've been using them in the 59 and 79 series as well as the 56 series. never had an issue.
09-27-2012, 05:42 PM
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RE: RE:
Permatex 19920 is for plastic.
ORIGINAL: Mustangman40
I have heard the ill effects LT can have on plastics, but never had any problems.. Can iteat glass filled nylon? Is there any brand of LT that doesn't hurt plastic and does red and blue both do it, or just red?
I have heard the ill effects LT can have on plastics, but never had any problems.. Can iteat glass filled nylon? Is there any brand of LT that doesn't hurt plastic and does red and blue both do it, or just red?
