Posted by: Rif Addams TITLE: MOTORIZED BICYCLES: New Wyman Motor Bicycle
My new engine arrived on Thursday. It~s one of the GT 48 ("Spit-Fire")chain driven units.
I am scrambling to get the new replica together for finishing the film work for Ron Rennie- the film maker involved in the Wyman project. He wants to have the extra footage edited with the shots we took along the way this summer, along with the musical scores, and the narration by this coming summer.
I~ve gathered the majority of the parts for the new bike and have been working feverishly all weekend stripping the paint from the 1967 Schwinn Varsity frame, grinding, filing, and sanding smooth the cable guides (brazed on).
I hope to have my gusseting plate cut and welded in place by this evening, and at least one primer coat sprayed.
The 1964 Bendix r.b. coaster brake hub is out being re-drilled for the .105" spokes and I should have the STEEL 27" X 1 1/4" rims re-drilled and painted this coming week. I still haven~t found the appropriate front hub, but will continue to dig through my parts in search of this elusive piece.
I have the handlebars sets which I hope to begin (and finish) modifying next weekend. In looking at the engine mounted in the frame, I may in fact, have to slightly dogleg the the crank on one side and bow it on the other. No big whoop there, easy as pie.
I have the tail lamp and battery, and possibly the housing for a headlamp. I still have the battery from the other bike. Bob Johnson will be constructing a new hanging box tank, which shouldn~t give us any problems. The reason we had trouble with the other one is that it had to be cut down at the last minute to clear the Whizzer engine, which itself was a last minute change. This caused a structural problem at the seams. Building one from scratch to the dimensions needed will give us a solid tank. without modification it should be great. Bob will also be fabricating a new scaled down battery box for our lighting requirements.
I~ve got just about everything, but I still need to aquire:
front hub, spokes (and have the wheels built), rear rack, and most importantly a saddle like the one we used on the Mead; a tail lamp / license plate mounting bracket, headlamp mounting bracket, bulb horn, bell, speedometer, and...?
In any case it~s in full swing now, yet time is tight.
BUT- this may all change as I came across an old off-brand English Roadster with 28" wheels (complete rider) that an aquaintance picked up for free. I~m hoping that he will be willing to sell it for ultra cheap and therefore save me some work. It~s even got the front rod brake! It would look a lot closer to both the original California motor bicycle AND the Mead Whizzer, thereby giving us an easier job of ~blending~ the footage...
I would still have to re-drill the rim hoops, and front hub, and have them re-laced (with the Bendix hub out back)
I will have to appologize for any delay in the website story, but Ron needs this ~new~ or ~filler~ footage by this summer in order to send it to various indy film festivals and to shop it around to some PBS stations, or whatever else he has in mind.
I will write as I find time and inspiration, so please be patient and check the site occasionally.
Posted by WT Vinson
I~m making a similar MotorBike with Briggs Engine. Would like to see yours. Thanks, WT
Posted by Sandy Evensen
Hay Rif, I have a 1974 Schwinn Varsity that I motorized with a 2 Hp Brigs and Stratton upright, I fashioned it after the 1903 Californian and ride it almost every day, I cut the PTO shaft off the motor and attached the V belt drive pulley inside the cut down fly wheel, witch keeps it narrow enough for pedaling with a standard crank, T built the tank out of 2x2 square tubing and it hangs under the frame,
I built a front fork brace like the old racers had to beef up the front end. I use a friction drive on mine with a jack shaft to drive the wheel, Every thing is bolt on as I did not want to weld on the frame, If you are interested let me know and I will send you some pic~s...Sandy...
Posted by Peetie
You may find the SF engine fits perfectly in frame, but check for crank to engine clearance.
The good news is, wheels are probably 40h which makes the 5 hole rear sprocket almost a bolt-on.
If you have any questions, just buzz me.
Posted by Rif
I bet your right! Boy that~s an easy one and I almost missed it...
Posted by sam
Count spokes on the English bike--bet the bendix will not fir those rims---sam
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