Build question

[123standish]

Hello,

when I feed the main shaft through the frame do I need the shims that come with the kit 0.3 or 0.5 mm on the top bearing?

I can only get the bolt through the bottom if I have no shim.

Any thoughts appreciated.

Thanks
J

[waveydavey]

You don't need the shim if it lines up and theres no play up or down

[vinny155]

you dont need them if everything is tight,try without the shim and if there is no play you dont need 1,if there is a bit of play,try getting the smalledt one in there..

[123standish]

Thanks for the replies.

When I do not use a shim there is a very slight up and down movement.

Does it need to be tight with no play up and down?

[johnsandywhite]

Thanks for the replies.

When I do not use a shim there is a very slight up and down movement.

Does it need to be tight with no play up and down?

That's correct. It's the same as used on the 550

[1chris]

If the shaft moves up or down due to clearance that will effectively allow additional + or - pitch to be applied without moving the servo's something which is not desirable, ideally there should be no up or down movement in the shaft at all

[jimmyhorns]

Yep, you need to put a shim or two in.

I have had to put both in mine so that there was no movement

[123standish]

Bugger! Ok thanks

[jimmyhorns]

Better to find out now, than to wonder why the head is misbehaving

I put a shaft mast collar on the wrong side of a bearing on my Knight, and that caused quite a lot of problems...