blade tightness and slop

[owend]

My MSR X's main blades go loose after one or two flights, and it seems to fly more erratically (or is it my flying skills?), I'm forever tightening the screws. How much play should there be? And what happens if they're too tight/too loose? If I tighten them right up it seems to fly more stably, so can I leave the blade grip screws tight? Lastly, how can I stop the screws loosening - I've tried a small drop of PVA modelling glue without much effect! It can be frustrating, I sometimes want to "accidentally" step on it!

Owen

[TheDarkPassenger]

Enough that they hold themselves in place but can be moved freely by hand.

Mine does that, it's not a major issue with such a small machine.

Don't step on it, it's a fun heli!

[Mike Sanders]

I am not familiar with the machine but I presume the bolt goes into a thread in the blade grip. Can you get a longer screw, to go right through and then put a nylock nut on the end of it. This will enable you to have the blades as tight or as loose as you like.

[owend]

OK, TheDarkPassenger, I'll watch my step and give it a chance! Mike Sanders, if you get a chance to look at one, the screw is literally the diameter of a sewing pin, I don't think a locknut is feasible. A spot of glue doesn't seem to work either, I'm wondering if the only way is to screw fully tight and hope friction keeps it like that.

My mCX2 has its blades rigidly fixed in place, no fore-and-aft swing possible. Would the MSR X work if its blades were rigid? I don't want to try without more experienced advice, in case stresses caused a problem elsewhere in the headworks. If there's too much movement will it make for instability? Vibration? Poor or slow response?

Owen

[monsigna]

my msrx blades are floppy, they have always been like that right out of the box, i thought that was normal for a non-cp heli. it flies fine, hope this helps