10-27-2016, 01:38 PM
(12-07-2014, 07:48 PM)Tezza_imp Wrote: Ever since I purchased my CB1100 in 2010 it has a head shake at low speed when I relax my grip on the bars. it has done it with 2 different front tyres. I have checked tyre pressures are correct but it has not changed the problem. Next step will be to check that the steering head bearings are tightened ok. Anyone else had this issue?What Ferret said is exactly correct.
Funny you should bring this up though, because I had a serious, high-amplitude head shake today, what I'd really call a half-tank-slapper. There's a spot I like to hammer it and the pavement's rough, I whack the gas open through it and stand on the pegs a bit. I hit it just exactly right (or wrong) once before on my ZX-10R, which has a steering damper (electronically controlled Ohlins) and whoopee, three or four high-amplitude oscillations, wham, wham, wham! Soon as the tire touched down, all gone.
The exact same thing happened today with the CB1100, wham, wham, wham, probably an arc of about 20 degrees, frequency maybe 3-4 cycles per second.
So this bike will headshake hard and could very well be a good candidate for a tankslapper if abused.
What you're experiencing is normal, though.