These are available for the Bates, Ziroli, or other size SBD's. The gear are 90
degree units, offset 5 degrees higher on the "up" side, with a 5 degree up angle
on the axle. Bates gear are $425, Ziroli $450, both plus shipping. Door mounts
Williams' Brothers 5.25" wheel shown, but is not included.
These are for the Ziroli, Bates' are similar.