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HelicopterBeginners Corner › Green threadlock.
09-02-2012 07:14 PM  5 years agoPost 21
Heli 770

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603 and 638 are retaining compounds.

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09-02-2012 07:25 PM  5 years agoPost 22
Ace Dude

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I know, and 290 is not retaining compound.

  

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09-02-2012 07:29 PM  5 years agoPost 23
Ace Dude

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Same goes for 294.

  

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09-02-2012 07:38 PM  5 years agoPost 24
Heli 770

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Ace Dude

Are you using the retaining compounds on Helis? and if you are, what for. I might be missing something.

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09-02-2012 08:01 PM  5 years agoPost 25
Ace Dude

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USA

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I used it for the bearing on the torque tube (aluminum tube) and also the bearing that attaches to the clutch bell. Occasionally for bearings on T/R output shaft, but there 290 wicking action can work well.

  

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09-02-2012 09:15 PM  5 years agoPost 26
GetToDaChopper

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Las Vegas , NV

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I have 290, 603, and 638 on my bench at the moment. All green.
and if i asked you for some "Green" loctite would you think retaining compound or the wicking type ?

(the wicking type is more of a light green).....

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09-02-2012 09:25 PM  5 years agoPost 27
GetToDaChopper

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But for the anal retentive here you go.......

271, Red: High strength threadlocker for larger diameter hardware.
262, Red: High strength threadlocker for for hardware smaller than that which uses 271 (more like heli parts). Either does a good job for our stuff, however. I see 271 most commonly in auto parts stores.
609, Green: Retaining compound, high strength, for mounting slip fit bearings to shafts. An appropriate product for tail boxes.
603, Green: Retaining compound, high strength, similar to 609 but good where the parts may be a little oily. Good for mounting oilite bushings in housings, BTW.
640: Green: Retaining compound, high strength. Similar to 609 and 603. Lacks the oil tolerance of 603. I use it where I might have trouble with adjacent bearing contamination with the product, such as start shaft bearing blocks, since it has a little greater viscosity than 603.
638, Green, rather thick: Ultra strong retaining compound for assemblies with a marked amount of slop in the fit, min 0.004". Don't try to use this stuff for our normal bearings on healthy shafts. It sets almost immediately in the tight gap, and you'll never have the chance to get the bearing into place.
290, Green: Wicking product for thread locking AFTER assembly. Medium strength, much stronger than 242 blue in my experience. Not the correct choice per loctite for bearing mounting.
242, 243 Blue: Classic medium strength threadlocker for most of our threadlocking applications. 243 is the oil tolerant version.
222MS, Purple: Low strength threadlocker for small diameter or otherwise delicate fasteners.

courtesy of Dr Ben......

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09-02-2012 09:36 PM  5 years agoPost 28
Justin Stuart (RIP)

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Plano, Texas

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courtesy of Dr Ben......
Courtesy of Dr. Ben, can you find out where those specialty types of Loctite can be purchased? (perhaps somewhere other than a factory closeout on Ebay)

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09-02-2012 10:22 PM  5 years agoPost 29
GetToDaChopper

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all over the place ???

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09-02-2012 10:31 PM  5 years agoPost 30
Justin Stuart (RIP)

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Plano, Texas

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When it comes to the specialty Loctites...

I've been looking for a good price on high temperature blue Loctite 246 for quite some time. I have an expired bottle I got off Ebay, but when I look for another bottle, the best price I can find is $10 + $25 shipping. Crazy.

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09-02-2012 11:47 PM  5 years agoPost 31
Donnie Baker

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Indianapolis

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Okay, let's see if I can stir up this hornet's nest a little bit more.

I've got a screw application where the manual recommends green thread locker because they don't want these screws over torqued (tail blade grips). I assumed they want a thread locker stronger than red.
I went to Auto Zone and they had the little Permatex tubes hanging on the rack in blue, red, and green so I picked up the green.
Now that I'm home I realize this is a penetrating grade.
This concerned me so I looked up the definition of the "Break/Prevail" torque specs listed on the back of the package. Here's the description I found on the Permabond website:

Torque strength is listed as both “break” and “prevail”. The break (or break away) is the measure of force needed to initiate movement of an unseated fastener in a loosening direction. The prevail (or prevailing torque) is the measurement of average force needed to provide continuing movement, after break away, through first full turn.

Here's the specs for the different Permatex grades that's listed on the back of the package called out as Break/Prevail:

Blue medium strength 115/53
Red permanent strength 189/275
Red high strength 230/225
Green penetrating grade 90/310

After reading this I think I may take the tail back apart and use the red high strength I've already got.

I just thought this was interesting and wanted to share.

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09-03-2012 12:08 AM  5 years agoPost 32
GetToDaChopper

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Las Vegas , NV

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you would want....

609, Green: Retaining compound, high strength, for mounting slip fit bearings to shafts. An appropriate product for tail boxes.

all loctite comes apart with heat no matter what color......

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09-03-2012 03:30 AM  5 years agoPost 33
Ace Dude

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USA

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I've got a screw application where the manual recommends green thread locker because they don't want these screws over torqued (tail blade grips).
you would want....
609, Green: Retaining compound, high strength, for mounting slip fit bearings to shafts. An appropriate product for tail boxes.
Why would you to use retaining compound for a screw/thread application?

  

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09-03-2012 03:32 AM  5 years agoPost 34
Ace Dude

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USA

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and if i asked you for some "Green" loctite would you think retaining compound or the wicking type ?
(the wicking type is more of a light green).....
I would ask about the application. You already know what happens when you assume.

  

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09-03-2012 12:25 PM  5 years agoPost 35
GetToDaChopper

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Las Vegas , NV

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Why would you to use retaining compound for a screw/thread application?
simple, because that's what it called for.......

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09-03-2012 12:27 PM  5 years agoPost 36
GetToDaChopper

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Las Vegas , NV

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I would ask about the application. You already know what happens when you assume
ya, that's what i thought you'd say.......

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09-03-2012 12:30 PM  5 years agoPost 37
Ace Dude

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USA

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I've got a screw application
Certainly not a retaining compound application to me, but, hey use whatever works for you.

  

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09-03-2012 12:31 PM  5 years agoPost 38
GetToDaChopper

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Las Vegas , NV

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Thanks, i will........

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HelicopterBeginners Corner › Green threadlock.
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