Hi Everyone, In late 1945 Whizzer motorbike company located in MI started production on the "H" motor. The motor was released as the 1946 "H" motor and had a V belt manual clutch. The clutch pulley was mounted on an arm, the arm was attached to the rear of the motor with a trunnion pin. The trunnion pin was PRESSED into the arm, then the trunnion pin was inserted into the rear of the motor and was a tight fit. The pulley was always straight, the arm was always a tight fit, and it worked perfectly. Later the company noticed some wear on high milage motorbikes and fitted an oil lite bushing at the rear of the motor case to make sure of a great fit.
It would be in bad taste to tell you why the new company changed the design. Could it be made cheaper, you betcha. Instead of a quality fit it was discovered a stock bolt inserted into a loose hole in the arm and then pushed through a set of bushings at the rear of the motor would attach the arm. So any reference to a clutch sytem on the vintage Whizzer and the new edition version would be like comparing "apples" to "oranges". The arm on the vintage motor was a really good fit, and the arm on the new edition models are loose fitted and always run at an angle.
For a while I considered having a special pin made to correct this problem, however it was going to cost approx. $20.00 per pin and had to be ordered in quanities of 100, so I decided against it. On all my personal Whizzers I machined a pin that PRESSED into the arm, and the O.D. was a tight fit in the bushings on the rear of the motor [no more play, loose fit, or angled pulley]. As long as a "off the shelf" bolt, and a hole too large in the arm is used it will never work as well as the vintage version does.
Even if the arm, pin, and bushing fit correctly the arm is usually made wrong. The majority of the time some of the arm needs to be ground off the allow the belts to run straight from the flywheel to the clutch pulley.
I will attach several pictures of the correct way to remove the play from the arm and also line the pulleys in a straight line.
BTW Hal you have one of the clutches that the pins will come loose in the hub, the bearing race will be grooved by the needle bearings, and you won't like the results. I suggest you get it modified very soon to avoid major problems.
If anyone wants more pictures of the clutch modifications email me direct at
quincy163@yahoo.com