Dimension from Drive Sprocket to Centerline of Frame?

[RichardD]

I need this measurement for a Shovelhead.

[SteveJ]

Why?
There may be a diff way to get your answer.

[Smiley]

3.5625 for a Pan but have no idea if this follows over for the Shovel but it's a start.

[JBinNC]

3.5625 for a Pan but have no idea if this follows over for the Shovel but it's a start.

For the sake of sanity, let's have some dimensional integrity. H-D never went past two decimal places for their chassis dimensions, and you shouldn't either. Carrying the dimension to four decimal places suggests (or even forces) a level of accuracy that is not possible nor desirable for chassis work.

Call it 3.56 and that is an actual reasonable dimension for this sort of measurement.

And the pan and shovel chain lines are in the same place, which makes mixing and matching these old parts easy.

Jim

[SteveJ]

45 years of building custom bikes I never had to determine this dimension.

[TriNortchopz]

Call it 3.56 and that is an actual reasonable dimension for this sort of measurement.

.5625" = 9/16"

3 - 9/16" ... is an actual reasonable dimension for this sort of measurement.