Steve I'm a big fan of the Silver bear's phrase built "in the spirit of"... there's a lot of creative freedom released in that short phrase. My interests are eclectic & my personality somewhat compulsive, persistent and eccentric, and my training keeps me focused & goal oriented; so splitting the Tadpole project into an opportunity to build an Indian style sidecar project makes a great deal of sense to me. Who doesn't like a two for one deal?
Completion of the Tadpole with a new frame. Would that new frame be a Flyer. Pat offers the heavier wall DOM tube & wider rear triangle version frame which is used used in the Bonneville bikes that should allow enough clearance for the drive line, but your current frame still has to mount a drive line that will clear whatever engine/rear wheel & tire combination you select for the Indian sidecar. The seat stay problem needs to solved to your satisfaction and not just "kicked down the road" to solve later on the sidecar build.
One thing to keep in mind is running a 1.95" tire on an appropriate size rim will also give more room for adjustment of the drive chain. Did I mention I'm persistent?
Rick C.
Completion of the Tadpole with a new frame. Would that new frame be a Flyer. Pat offers the heavier wall DOM tube & wider rear triangle version frame which is used used in the Bonneville bikes that should allow enough clearance for the drive line, but your current frame still has to mount a drive line that will clear whatever engine/rear wheel & tire combination you select for the Indian sidecar. The seat stay problem needs to solved to your satisfaction and not just "kicked down the road" to solve later on the sidecar build.
One thing to keep in mind is running a 1.95" tire on an appropriate size rim will also give more room for adjustment of the drive chain. Did I mention I'm persistent?
Rick C.