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Mine has always done this also. I tore the whole drive train a part last year. New tires, Shocks, brakes,19 tooth sprocket. I finally decided it is engine harmonics and just don't worry about it. Does it in that exact range and second gear is definitely.
Don't ask me what engine harmonics means. Just the best way I can describe it.
I'd go along with this except it didn't do it before the tyre change and did it immediately after it.
Ordered a new tyre today....will fit it myself this time and see if it does the trick
Just for phucks sake, Put the old tire on backwards and ride a bit, see what happens.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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