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My wife wrecked her V7 III racer going over a set of Railroad tracks that we have crossed at least 60 or 70 times and went down. We were not moving fast, under 40 mph. In my rear view mirror I saw her head light go left to right and couple of times then the front wheel tucked, Any insight or ideas welcomed.
Nobody's mentioned PDI? I know my guy won't let a bike out of the shop (unless you ask) without a full road test.But, anything is possible.
He got her a new bike and wants to know if he should take any preventative measures because he heard about headshake. I've hit the ton on my '10 Café and my '18 Carbon and never experienced head shake.
https://www.cycleworld.com/why-do-motorcycles-wobble-and-weaveI really like Murray Walker's wobble and weave video.
The Breva I think has a slightly "quicker" steering geometry than the V7lll. It has only shaken it's head once, and that only recently when a guy came around a corner on a very twisty road on the wrong side. I shut off and braked, but then he didn't head back to the correct side. Drop on one side, car very close, I time to say "F..." and hit everything HARD. For the first time ever I locked the front up, it did a hop and when it landed it shook the head once, maybe twice. However, it promptly settled with no input from me.Shaking caused solely from situation, not from the bike itself.As it was, the driver suddenly woke up, dived for the correct side and just missed me.
Well, my V7 I began to show a still controllable head shake at about 15 000 km´s. But it was at velocities of between 135 and 155 kph.
That kind of experience will make you think about things.
My '09 V7 I also has a mild, controllabe headshake at 80 mph (135 kph). It's not really a headshake, it's more that I can feel the "suggestion" of head shake. Especially if I'm touring with saddlebags. Adjusting the speed either up or down makes it go away.Joe
And I had the fork legs showed upwards by 15 mm. These measures transformed the bikes. Even when it is cold the bike runs straight, I feel much less disturbance from ridges and patches in the tarmac. The bike is much more neutral in turns. In this regard it resembles the V7 III which has a slightly steeper fork.