Quote:
Originally Posted by fhsteam613
it is a sprocket spacer...am has no drawing...i would draw it myself but can't remember how to make the 6 ole pattern for the life of me...
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For future reference, here's how you do a six-hole pattern:
Draw a [construction line] circle the diameter of the circle pattern you want. All of the AM/IFI/Skyway stuff uses a 1.875" diameter circle.
Draw a [construction line] horizontal line through across the circle. It has to touch both sides of the circle as well as go through the center point of the circle.
Draw two more [construction line] circles with a diameter of 1.875" with their center point on two intersection points between the horizontal construction line the and construction pattern circle.
The four additional points where these new construction line circles intersect with the original construction line circle, along with the two intesection points from the horizontal construction line and the original construction pattern circle are all now evenly spaced (60 degrees) apart. Draw #10 screw clearance holes on these six points (0.201", #7 Drill), add in an inner circle and an outer circle with the diameters of the AM part, extrude, and now you have a dimensionally accurate AM-0207 250 Sprocket Spacer. (It won't be perfect match; the real ones have pocketing in them. But it's close enough for most things).
// I'm glad that I had an actual drafting class (you know, with a pencil, straight-edge, and a compass) back in middle school. ;-)