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HomeAircraftHelicopterMain Discussion › Blue or Red?
03-05-2012 03:01 PM  6 years agoPost 1
Stephen Born

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USA

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Is blue Loctite (242) sufficient for the feathering shaft bolts? I know it takes around 10x the torque to remove.

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03-05-2012 03:02 PM  6 years agoPost 2
Gyronut

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Martinsville In.

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I typically use blue locktite for that application.

Rick

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03-05-2012 03:03 PM  6 years agoPost 3
jschenck

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La Vista, NE.

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yes - I always use blue for the spindle bolts. As long as the threads are clean it'll be plenty strong.

Clean the bolt threads and the spindle threads with some alcohol and a cloth

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03-05-2012 03:04 PM  6 years agoPost 4
JPhillips

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Waco, TX

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Use blue. If you use red, you may not be able to remove the bolts. Using heat from a soldering iron helps too.

Just make sure the threads and spindle threads are clean.

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03-05-2012 03:12 PM  6 years agoPost 5
Stephen Born

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USA

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Thanks!

And green for the motor pinion?

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03-05-2012 03:50 PM  6 years agoPost 6
Mike Fortin

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USA

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I use red on everything except spindle bolts.

Have Rotors, Will Fly!

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03-05-2012 04:03 PM  6 years agoPost 7
kcordell

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O Fallon, MO

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Be careful on the spindle bolts, don't get too much on them to prevent any loctite from getting into the bearing. I usually put a dab of loctite in the spindle first instead of the bolt.

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

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03-05-2012 04:14 PM  6 years agoPost 8
Stephen Born

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USA

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I usually put a dab of loctite in the spindle first instead of the bolt.
+1 Good point. I am going through a thrust bearing and several washers. It would be bad if loctite seized those up.

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03-05-2012 04:15 PM  6 years agoPost 9
Stephen Born

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USA

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I use red on everything except spindle bolts.
Mike Fortin, red on pinion also?

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03-05-2012 04:15 PM  6 years agoPost 10
VKGT

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Sanford, NC

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I haven't used green for the motor pinion. Blue seems to work just fine for that as well, even on my 700E

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03-05-2012 04:19 PM  6 years agoPost 11
Mike Fortin

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USA

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Yes, I even use it on the pinion.

I haven't ever had one slip yet.

Have Rotors, Will Fly!

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03-05-2012 04:22 PM  6 years agoPost 12
rcnut

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Rockford, Illinois

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Blue on spindle bolts!

Red sometimes on grip arm bolts and swash balls, green on servo nuts.

Team Miniature Aircraft
"I love the smell of Nitro in the morning!"
...Citizen 654!

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03-05-2012 04:28 PM  6 years agoPost 13
Dood

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Wescanson

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Don't use red anywhere on the helicopter unless you're 100% sure you'll never need to service that part or where parts get extremely hot where blue loctite becomes useless.
An alternative to red for "hot" applications for when blue won't work is a small amount of high-temp silicone on the threads.

I've used Red loctite a total of 3 times in 5 years on helicopters, most recently yesterday afternoon. That was for a Z-RC carb insulator block on my gasser.

  ▲
▲ ▲

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03-05-2012 05:20 PM  6 years agoPost 14
kcordell

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O Fallon, MO

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Several years ago, we had a guy who built the entire frame set with red loctite. When we went to take it apart after a mishap, basically took everything we could off the frames, then had to boil the frames to get the red loose.
Only place I have ever used red is on muffler bolts and on the MA thumbscrews (when putting them together, not for attaching to the model).

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

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03-05-2012 05:26 PM  6 years agoPost 15
Stephen Born

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USA

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Don't use red anywhere on the helicopter unless you're 100% sure you'll never need to service that part or where parts get extremely hot where blue loctite becomes useless.
Agreed. I am going to use blue on the feathering shaft. As far as pinion goes, I read some pilots use red, some use blue, and some use green. Also, each one swears by it. You can see where it can get quite confusing.

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03-05-2012 05:33 PM  6 years agoPost 16
Swoop

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Newark, DE USA

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I'm with Dood, no need for red anywhere on the helis.

Chris
X50, B320, Radix, Spartan
Titan,Kasama,MP5,Radix,JR770
Trex450SE,MavrikkG5,Phoenix35

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03-05-2012 05:44 PM  6 years agoPost 17
jschenck

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La Vista, NE.

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Places I've used red -

Trex-700 boom support bolts. They are big and come loose. It's easy enough to break them loose when needed

Trex-250 - blade grip ball links. I'd weld them in there if I could. Maybe JB Weld would be good here.

Servo wheel ball link nuts - Done that in the past and a good idea since those have maybe 1 good turn of the thread on the nut and don't want those coming loose.

Not many other places to use red for me. I've used them on pressure taps for the exhaust systems and it's worked for me. Need to be perfectly clean. RTV may be a better solution there since it won't melt at higher temps.

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03-05-2012 06:25 PM  6 years agoPost 18
BladeStrikes

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Shelby TWP,Mi

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I use Red on everything (whole head,whole tail,motor mounts,bearing blocks ect..) and never had issues taking bolts and reuseing anything..

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03-05-2012 06:51 PM  6 years agoPost 19
Dr.Ben

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Richmond, VA, USA

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I use red on virtually everything except bearing fixturing to shafts or into blocks, in which I will use 603, 609, or 640. Used in appropriate amounts on fasteners 4mm or less in diameter, "red" 270/271 still removes well with quality hand tools and no heat. These small fasteners don't have enough surface area to require heat for removal unless you use an excessive amount. Mfg's specs for its shear strength are based on fasteners at least 1/4 inch in diameter.

Though I have not used loctite on a spindle bolt in 20 years and have never found one to be even remotely loose on inspection (though I do torque them always with a torque wrench to fastener diameter rated specifications), I would suggest that those who do so use the loctite blue stick product because it won't wick into thrust races.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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03-05-2012 07:01 PM  6 years agoPost 20
Stephen Born

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USA

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I watched this video last night. The comments suggests the blade grips seperated from the shaft, causing massive destruction to the machine.

Watch at YouTube

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HomeAircraftHelicopterMain Discussion › Blue or Red?
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