I am about to build my heli.

The instruction recommends me to use threadlock for some bolts. It says to use "Hobby Tight".
I saw a threadlocker BLUE (medium strength) by Prmatex from Walmart. I wonder if it is sufficient or too much thread locking agent for r/c heli.

Be careful, if you use a bonding agent that bonds really well you can almost forget getting that screw out. The threadlock is really only meant to stop the screw from backing out during vibration.

Well, its torque specification is 115/53 in.lbs for break/prevail.

So, is it OK? or not OK?

I use Lok-Tite brand of thread lock. You can get it at most dealers of industrial fasteners (screws, bolts, etc). The BLUE color #262, is what I use on my helis. It holds under the most adverse vibrations, but is easily removed when you want. The GREEN color is mostly for cylindrical parts like securing bearings to shafts, which you won't need for your heli. The RED is for a permanent installation. The only way to remove the part is with heat! Don't use it unless you plan to NEVER remover the part!

Rod

I use the blue permatex threadlocker. It works fine for this type of application...

Mine is blue permantex threadlock with midum strength as I mentioned above.

I guess this is a 'green light' for me.

Thanks all!

There's lots of applications for green lockite. Radial bearings in metal grips, the pinion bearing in the Raptor, among others.

Hi zzzz,

Yes, sorry... My post was meant to be a 'green light' about using the blue permatex... It works well for a medium strength threadlocker. I've used it for a long time with no issues at all. It holds well, but can be 'broken loose' without heat if needed...