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Super Simplex

Between frames

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Mike Lightfoot23/10/2016 19:43:59
76 forum posts
24 photos

I have just started my super simplex and am waiting the delivery of some laser cut frames in 3mm so my question which is the most important measurement between frames, outside frames or frame centre line, I only ask because originally the drawing spec is 1/8 and I know there is only a bit in it i thought I would ask thanks.

Michael Topping23/10/2016 19:56:02
74 forum posts
5 photos

I always maintain the outside dimension, usually 4.375 ". That way the cylinders and valve gear are in the designed position. In reality it is only 7 thou a side so won't make a big difference.

Michael

Mike Lightfoot23/10/2016 20:21:58
76 forum posts
24 photos

Michael, thanks that makes sense outside it is.

stan pearson 123/10/2016 22:07:39
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135 forum posts
2 photos

Hi Mike

Michael is correct you must use the outside dimension to keep parts in line also you will find the end float on the axles will be wrong.

Stan

Mike Lightfoot24/10/2016 18:20:33
76 forum posts
24 photos

Stan, thanks for that confirmation I know it doesn't seem much but if I cut the stretchers on the mill which has a DRO it should be fairly close. Thanks again

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