Down shifting using engine breaking to slow

Hey folks, I've read some post's where people say to downshift and allow the engine breaking to slow you. Be careful when doing this. The rev limiter is used to help keep the engine together and downshiting early bypasses this protection. This can cause the valves to float and contact the piston. The result is not good as you can imagine. It will however lighten you wallet by about $1200.

There is a spot on my track where there is a small double jump followed imediately by a super tight 180 degree U-turn. Most people either roll the double slowly or jump it and overshoot the corner with the brakes locked up... I jump it in third gear and click it down into second in the air. When it lands the engine brake imediately slows the bike with just enough time to flick it into the corner. In conclusion... engine braking rules!

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Engine braking does rule MotoGreg, however, I just wanted to post a warning. We run at a track with a double step-down section into a small double with a sharp right hander. We would do the step-down's and then downshift while in the air to set-up for the small double and sharp right. This totally destroyed the whole top end.. Head, valves, etc. The cost to repair the damage is high enough to make one ponder turning the old scoot into a parts bike and shelling out the cash for a new scoot.

i know this is the yz site but for us enduro boys i have to confess seeing a &%$#@!in great big tree makes me brake like, well, like i'm the last of the late brakers!!!!

Taffy

Uh, I hate to be the to break the news to you Mr. MXr. Using engine braking to slow the bike is a technique that's probably as old as the motorcycle itself. Have you ever seen a dirt track race, tt race, or a road race. When the rear end of the bike is stepping out right before turn-in, BINGO! Engine braking ( by way of clutch modulation), It's used to a) scuff off speed and :) bring the back end around to get the front pointing into the turn. As far as your contention that downshifting to far will wing a valve. It happens, but in the dirt the gearing isn't usually that tall, the traction isn't that good, and an experienced rider usually will catch it and not panic . Even if the guy freezes, It's more likely that the rear will lock up and slide

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