Correct me if I am wrong, but do I remember from car days that a wobble at one certain speed was a problem with a tire/wheel balancing and that a wobble at all speeds was an alignment problem?? Maybe his front wheel/tires need to be balanced or balancing beads added??
IF Chuck was referring to MINE
- it was caused by the standard steering-damper that the '62 Triumph came w/. When I bought it from my older brother, he advised me to turn it tighter when I was going on the highway, which I had done. AFTER ending in the ditch on the OTHER side of the road I loosened it off, then when I got home again I did some trouble-shooting.
The damper was a rod that went vertically thru the frame's steering-stem to a threaded piece that centered on a tit
under the steering head. When I checked it I noticed that there was a slight amount of "slop" around that tit
, which, when the damper was tightened
, allowed a few thousands of an inch of FREE-PLAY to an otherwise SNUG area, and for whatever reason that morning had started moving, increasing its amplitude to the point that I got the tank-slapper
happening. I was able to fix it by SQUEEZING the two sides together (when NOT attached to the bike) in a vice just enough that I had to 'tap' it into contact w/ the tit
, now WITHOUT any PLAY either when loose or tight.
My initial drag-racing was done using that particular frame, and I NEVER experienced anything similar ever again!!!