I have an old set of Sportster S&S flywheels. I love these wheels - they're the first series that S&S sold up to around 1970 or so with the markings on the outside faces and not on the rims as they were in the later 1970's.
These wheels are marked 400-6 on their outside faces, below the pinion/sprocket shaft holes, and from what I can tell they're 4-1/4" stroke. However, because I don't want to remove the shafts (original and in perfect condition), I can't get an exact distance reading from pinion hole to crank-pin hole center lines with my calipers. Does anyone have the old S&S information sheets that describe which stroke is associated with the 400-6 part No.?
These wheels are marked 400-6 on their outside faces, below the pinion/sprocket shaft holes, and from what I can tell they're 4-1/4" stroke. However, because I don't want to remove the shafts (original and in perfect condition), I can't get an exact distance reading from pinion hole to crank-pin hole center lines with my calipers. Does anyone have the old S&S information sheets that describe which stroke is associated with the 400-6 part No.?
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