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Logo 600 › washers on main shaft 600 3d
12-14-2011 06:13 AM  5 years agoPost 1
smittylube

rrVeteran

Santa Cruz, CA

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Can anyone clarify this for me.
I am going through my heli after a mishap.
I had it setup on the main shaft from the bottom up-

C clip,
one way/ main gear
thick washer
belt drive gear/ pin
thin washer
main bearings
collar,
follower/ anti rotation thingy,
head

my paper and the exploded on mikado are very vague and show only one washer between the belt gear and lower main bearing if I read it right.

I do notice in this setup my main gear/one way does have a small amount of up and down on the shaft. I would guess .005-.008" not a lot. but I am just holding the setup in my hand not mounted in the frame

Thanks, Steve

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12-14-2011 05:45 PM  5 years agoPost 2
dahld

rrKey Veteran

Bakersfield, CA, USA

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Mikado has changed over time how they best think the washers should go. The washers just fix the vertical locations of the belt drive and the main gear on the shaft, so the belt rides as close as possible on the center of the pulley, and the main gear doesn't touch the frames where it rides very close to the frames on the top rear of the gear.

The current wisdom (and as it is noted on their downloads on the Mikado site), is to use a thin washer between the main shaft bearing and the belt pulley, and a thick washer between the pulley and the main gear.

Also, a little vertical play of the main gear is fine. Add a thin or thick washer between the c-clip and the gear, to remove as much of it as you can, but in any case, the main gear should be able to run free, and not have drag on it from no spacing.

(-: Dave

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12-14-2011 07:12 PM  5 years agoPost 3
smittylube

rrVeteran

Santa Cruz, CA

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Thanks- I guess I had it right. Back together the same way

Steve

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