Home › Forum › Ask A Member › 1954 Fastwin › Re: 1954 Fastwin
Your first pic, "cam right off the roller, full throttle", is incorrect The roller being off the skinny part of the cam would be a "less than idle" position. At idle, you should be near the skinny end of the cam, at full speed, near the fat end of the cam. Never off the cam, bearing on the ignition wires. Once you get near the skinny end of the cam, the roller no longer makes contact. It "floats" in the air until you advance the throttle enough for the roller to make first contact at the hash mark. Something is definitely wrong between the roller rubber and the carb throttle shaft in that linkage. Fix this problem first.
Later,I might work backwards for a second- put the roller near the end of the fat end of the cam, and work backwards to see what’s needed to make the "twist grip" indicate "fast".
Maybe something wonky at the rear of the engine under the mag plate with the vertical throttle shaft, and the curved brass arm under the mag plate.