Hi

Roger has said the thread should be 5/16" Whitworth, this has a 55 degree thread angle as opposed to that of 60 degrees which BSCY has. My first move would be to get a correctly threaded adjuster and try it for fit, you may find that this will resolve your problem.

Regards Mick

Hi

If the damage is to the frame thread then in my opinion the best and least intrusive method of repair is by wire thread insert, ('Helicoil'). This will remove the minimum of material from the frame and retain the original design adjuster components.

Regards Mick

I'd thought the engines were the earlier type, pre-alternator and that the coil ignition timing cases had been added. Hi I hadn't considered that. The primary inner looks to be drilled and tapped for cover screws and is missing the flange for the band clamp suggesting the cases are the alternator a...

Hi Thanks for the registration info, can't see them getting an age related plate nowadays for 'substantially modified' reasons. The swinging arms are modified AMC ones, (one early in keeping with the half width hub and one later mated with the full width hub), the damper lugs have been moved forward...

Hi Yes, lots of work and a nice result but not very much AMC. The engines and gearboxes could be period, (though not the same one ;) ), as could the teledraulic forks. No idea where the tanks, mudguards, rear frames and suspension comes from. Seems to be a lot of hand made components of pretty good ...

Hi Simon

Are you sure? that would mean the shaft was free to rotate in the bearing inner. I've not refurbished a BAP gearbox before but what is the function of PN 3118-48 pg 53 of the Draganfly catalogue?

Regards Mick

Hi Had a nice Christmas gift from my son this year, it's an illuminated Ariel sign to the design of the circular tank badge. It's 48cm in diameter and has an LED loop light, (the yellow ring in the photo). It was custom made by a work colleague of his and I'm well chuffed with it :D :D Workshop Sign...

Hi Simon I'd replace the sleeve gear bushes as a matter of course if only to reduce oil passage. Not sure how to rationalise near zero axial on the mainshaft small bearing and 0.040" end float on the shaft, was the clamping to the bearing inner removed when measured? Replacing the dowels would ...

Hi Simon

I think I would concentrate on the free movement and correct centring of the selector shaft, something causing the shaft to not centre and thus biasing the mechanism resulting in interference, (weak spring, gummy pivot etc.).

Regards Mick

Hi Simon

Did you check out the condition of the selector mechanism as suggested?

How worn is the main shaft small, (kick start end), bearing? I don't think that's the cause of the noise but could be contributing to the end float.

Regards Mick