700n collective zero pitch issue

[olly]

I had a blade strike recently, in a low hover tail caught the long grass, damaged main and tail blades, boom, stripped various gears and tail servo gear etc. All repaired now but hit an issue when setting up again with the spartan vortex. Levelled swash with the servo trim menu and got to the collective 0 deg pitch sub menu to set zero pitch for the blades. I can set the blades to zero on one side of the model, but when I go round to the other side to check, I have a 2 deg difference. I have just checked the mainshaft and I think it is very slightly bent, feather shaft seems sound. Tried moving head block throuh 180 on the shaft but no better.

Any ideas until I get a new shaft next week?

[jwatts007]

Bent arm on the blade grip....

[George J]

Slightly bent main shaft won't effect pitch by 2 degrees. Assuming that before the spill everything was set up perfectly, servos 90 degrees, swash level, blades 0 at centre stick etc and now after the spill and a new set up you have a 2 degree difference on one blade something is pretty bent and shouldn't be to hard to spot!

[Delarado]

do you mean checking the other blade?

If your measuring different blades on opposite sides of the disc ti could just bea blade tracking issue.

[Guest]

First off change your shaft and just forget it until you do. Then recheck your swash is leveL. Now re pitch both blades to zero in one direction (front). Now check pitch at back position. If everything is straight swash level must be off in aileron.

Easy way to check your spindle just put a hex on and rotate in position. If gap changes between hub and grip changes even slightly its bent or look at tip of grip for movement.

MJ

[nickwap]

If you are using the Plastic Align Servo Wheels, they do strip the splines I would check them all, also it would be very 'Lucky' to have that amount of damage and not have a bent feathering shaft.
The easy way to check is as Maj described.
Main shafts and feathering spindles are inexpensive (in the big picture) I would change them as a matter of course after a bump.
HTH

Nick