Propshaft Alignment

[Chief Engineer]

Maximum clearance in any direction between flange and coupling is 1/3,000"

you do mean .003.....I know you do......

[Laidback]

Thanks Chief - I do mean .003 - I had forgotten how to write 'three thou'
I looked at it several times and gave up !
Richard

[never monday]

the tolerance for the face to face match of coupler flanges is 0.001" per 1" of diameter of the coupler.

[Chief Engineer]

I knew 'zactly what you meant.

Originally Posted by Laidback

Thanks Chief - I do mean .003 - I had forgotten how to write 'three thou'
I looked at it several times and gave up !
Richard

[Laidback]

Originally Posted by never monday

the tolerance for the face to face match of coupler flanges is 0.001" per 1" of diameter of the coupler.

Never Monday,
Thanks for the formula - as the gearbox flange diameter is 3.94" for which Aaron can use 0.004" as the clearance (instead of the 0.003" first suggested)

[Laidback]

Aaron,
Noticed from one of your earlier posts that you intended to replace the engine mounts. Well a word of caution : once you have aligned the gearbox flange with the propshaft coupling to your satisfaction, run the engine in gear, then leave it for a few days. Then uncouple the shaft from the gearbox and re-check the clearance. This is necessary in order to make sure that engine has not settled into the engine mounts and thereby altering the coupling/flange clearance.