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Hello , I am building a Stuart Turner beam engine , I have got to the eccentric Andrew Smith's book says make it off centre by11/64 but the drawing says 9/64. Can anyone tell me which is correct please
Regards Phil
I didn.t know Andrew Smith was eccentric !
I am pleased that you could read the drawings in the book . Mine was too badly printed to do so.
Mk 1 eyeball gave me 5mm eccentric ( 10mm throw ) with a 14 mm between centres operating arm.
If you find that the throw is too big you can easily adjust the length of the operating arm .
Brian C
Might have missed a comma.
Ian S C
true sorry !!!!!
phil
oh yes I see . I could alter the length on the rocking lever to get it right if needed
thanks Phil
Same query – Stuart advise 9/16 is correct.
My Stuart drawings that came with the castings shows 11/16.
Mine seems to run OK on 9/32nds movement (9/64" off ctr)
9/16" would put the hole outside the eccentric
Edited By JasonB on 10/07/2016 15:08:36
Apologies – senior moment.
9/16 and 11/16 should read 9/64 and 11/64
Jason is correct, 9/64 is what Stuart confirmed – they did say that the drawing was incorrectly dimensioned at 11/64.
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