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My late father-in-law, Ray Terwilliger, rode BMW motorcycles for years. His last long road trip was to ride his restored 1955 250cc BMW to Redmond, OR from Eden, NY (Buffalo area) to take first place as Best Working Vintage 2010. See pg 80 of Oct. 2010 On The Level magazine.
If you know the RPM of the max. torque of the engine, use that as a starting point for shifting. Check throttle plate position and then set some resistance you can feel behind the gas pedal. This could be an extra return spring or a tennis ball on the firewall. You want to avoid anything that will cause the throttle or linkage to get stuck open.
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