adjustable Norton balance factor

Ok ya can see what confused me twice over. 1. the dark tint 2. weld beat around the plug holes as thot ya just drilled through & tapped w/o bead surround added - that wasn't there prior. On last searching BF issues this week I put in <traction> to find basic division in crankshaft mass, fast road racers and slow trials guys prefer heavier while darg racers and hill climbers less mass. The tiny BF mass changes would not count towards basic mass inertial changes, just the the way power pulses are damperned or not via the two inline of trust isolastics. Peel has 4 rear big cushions while from has 2 big cushions each with 1/2 the factory rubber mass contact area. Peel nice petting low rpm vibes disparaged like Frank Damp test rider claims his did, below 2000 rpm. Trixie with beveled fronjt iso's but w/o crank dyno balanced nor any links isolates in low 2000's. Wes's semi-clapped out '71 takes till mid 3000's. The handful of other 750's & 850's fully fettered by nic pickers like Rich Stone that builds bikes for Rankdy Baxter Cycles to sell all waited till mid or upper 2000's. Rigid mounted frames are not isolastic Commandos so I think they should get their own forum area. I suspect some their handling advantage my be d/t the higher BF rewuired so resonating more in line of drive more that across it. Once ya got more power than traction other things become more important. Other cycles I've over powered in turns all let go before the G's get breath taking sideways wheelie- pashaw.