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FJR Motorcycle Forums
Technical & Mechanical Problems
Hitting gravel around a turn...
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<blockquote data-quote="ionbeam" data-source="post: 758875" data-attributes="member: 277"><p>+1 Shiny</p><p></p><p>Had a V-Max that would periodically try to kill me by instantly going into a tank-slapper. I never did figure out what triggered it; seemed to be independent of road, tires, and most speeds (as well as steering bearings, wheels, triple tree, swing arm bearings, frame, forks, etc). The one thing that would quell the slapper would be to stand up on the pegs and decouple a lever point at the seat. The trick is to be able to do this when suddenly and out of the blue you get the shit scared out of you and the outcome of the event is decided in a couple of seconds. Standing on the pegs isn't about unsprung weight as much as it is about removing a lever point between the frame and the bars. Grabbing the bars with a death grip while the frame/forks are trying to oscillate is tantamount to using counter steering against yourself. It creates a self-reinforcing oscillation.</p><p></p><p>Wife just finished the NH MSF training (freshly minted motorcycle license in hand). She was told by the instructor that if you are leaned over with the rear wheel locked that you are usually better off to keep the brake locked and take your chances. For some reason the instructor did not go on and tell the class about high-siding if you release the brake and the rear tire regains traction.</p></blockquote><p></p>
[QUOTE="ionbeam, post: 758875, member: 277"] +1 Shiny Had a V-Max that would periodically try to kill me by instantly going into a tank-slapper. I never did figure out what triggered it; seemed to be independent of road, tires, and most speeds (as well as steering bearings, wheels, triple tree, swing arm bearings, frame, forks, etc). The one thing that would quell the slapper would be to stand up on the pegs and decouple a lever point at the seat. The trick is to be able to do this when suddenly and out of the blue you get the shit scared out of you and the outcome of the event is decided in a couple of seconds. Standing on the pegs isn't about unsprung weight as much as it is about removing a lever point between the frame and the bars. Grabbing the bars with a death grip while the frame/forks are trying to oscillate is tantamount to using counter steering against yourself. It creates a self-reinforcing oscillation. Wife just finished the NH MSF training (freshly minted motorcycle license in hand). She was told by the instructor that if you are leaned over with the rear wheel locked that you are usually better off to keep the brake locked and take your chances. For some reason the instructor did not go on and tell the class about high-siding if you release the brake and the rear tire regains traction. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Hitting gravel around a turn...
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