mx 400 sesaw screws

[anthony]

has anyone noticed that the screws that hold the cnc seesaw to the cnc head tend to get loose i tried tightening them but to tight the seesaw does not move freely
and just tight enough for it to work smoothly and they tend to get loose this was never the case with the stock plastic seesaw and head i did use blue thread lock
but not much help there.

[MLaBoyteaux]

Hey Anthony,

Moved the topic here, hope you don't mind!

[fedex]

I had to take mine out and re-loctite them. they were working loose as well, I beleive the screws are a little longer now. Atleast thats what I'll try when I need to replace them. Try adding a bit more loc-tite on them, should solve your problem, atleast it did for me. Be sure to snug them up good and let it sit for a while. If its too tight you may have to back off a bit on the scew. Gl

[pugger86]

Mine also came loose. Actually one came out in flight, I got lucky and it was close to the ground. I just received relacements from Tower Hobbies just yesterday.

[fedex]

Originally Posted by pugger86

Mine also came loose. Actually one came out in flight, I got lucky and it was close to the ground. I just received relacements from Tower Hobbies just yesterday.

Yeah, barely caught mine, I just noticed the flybar would rock back and forth rather effortlessly, since then I added the extra loctite and it worked loose just enough to give without binding.

As for the plastic ones, I just don't know, are they more like course threaded screws on both sides? wouldn't it be better if you could just put a bolt completely through the plastic head and put a nut on the end? (you may have to dremel the plastic head a bit to get the nut to countersink enough to clear.) but couldn't this mod work? I've never ran across this problem with the plastic ones but a friend has the plastic version, seems like they strip rather easiely just being screwed into plastic. Seems like superglue on the screw would do the trick if nothing else.

[jrohland]

If you are using the center hub with the ball bearings and, an aluminum seesaw, do this:

Put the supplied screw through the ball bearing, put 2, count 'em, 2 of the supplied shims (washers) inside the bearing, put a tiny drop of blue locktite on the end of the screw. Now push the screw+bearing+shims+locktite into the center hub and screw it into the seesaw. Screw it down tight. Make sure the seesaw moves freely. If you did it right, you can tighten those screws down really tight without the seesaw binding.

There are two aluminum center hub kits out. The one from Helimax (Tower Hobbies) is MUCH better than the ARK kit.

jrohland