spacer thickness

[john ingleby]

Earlier this year I bought an old Fury, I think it's a "Pro" but not 100% sure.
One thing that is odd about it is that above the main gear it has a home made spacer, about 3.5mm thick, that sits between the brass sleeve and the gear.
After yet another crash where the mainshaft was bent I thought I'd replace the home made spacer with the correct part.
Trouble is the spacer that arrived is probably less that 1mm thick and there's no way I can use it.
I've no manual on this Heli and not sure if I ordered the right part for it.
Can anyone tell me if there was a modification at some time in the past affecting this spacer, (0619) on the "Expert" build manual, that I generally use for my spares identification?
I'm wondering if the lower bearing housing could be inserted upside down affecting the position of the bearing, or something similar.
Thanks.

[DavidH]

Can anyone tell me if there was a modification at some time in the past affecting this spacer, (0619) on the "Expert" build manual, that I generally use for my spares identification

Yes there has been a modification. Take the brass spacer and shim and throw them in the garbage. Then put the mainshaft and main gear back in the bottom. Set the mesh adjustment between the crown gear and tail rotor pinion by pulling up on the mainshaft. Tighten the lower mainshaft collar when the mesh is correct.

The brass spacer and shim are not even in the kits anymore and have not been for 4-5 years now.

David

[john ingleby]

Thanks Dave. That makes a lot of sense.

[john ingleby]

Thanks Dave. I couldn't understand the reasoning for this set-up when there were the two collars already setting the position of the shaft at the bearing blocks.
This Fury, has had a few things strange about it, one of them is that I have to remove about 1/4" from any new boom to enable a 30" standard torque tube to engage in the drive shaft and tail gearbox properly.
I guess it must be one of the earliest on the market.

[DavidH]

The brass spacer was originally intended to help set the mesh between the crown gear and front pinion. That was the only reason of it. Then the Team pilots just started discarding them and going back to previous way of setting the mesh with the lower collar and setting it like they preferred. Soon after that the spacers were discontinued in the kits.

As for the tail booms, they are cut to length at MA. Could be someone just did not hold that one in the jig correctly. Seen it happen a couple of times. MA gets the booms in one length, then cuts them to the length needed for each model.

David