Wheel Lock When Downshifting

[8110]

My ER34 wheels sometimes will lock for a sec when I down shift (say from 4th to 3rd) to enable engine braking.

Is this normal and why is it so?

[Kinks]

rev match.

[alpinestars]

compression lock

[someonestolecc]

LOL

Both replies true but not much of an explanation

It's called compression lock because it's the opposite of a burnout. Lookup howstuffworks.com and look for drivetrain/differential or gearbox and click around.

Rev matching is using the accel to match the engine speed to the geared road speed. Again if you read through howstuffworks on it should be easy to pickup.

To stop it either be easier on the clutch, shift down into lower revs, learn to rev match (search).

Good luck.

[8110]

Ok noted.

I heel toe-ed when I downshift and that's when the lock occured.

[phunky_monkey]

If you heel-toe correctly it won't comp lock, that's the idea of it. Match the revs correctly.

[r33_racer]

you probably over rev matched and instead of matching at say 3500rpm you went 5000rpm which would make it worse and cause the compression lock up.

[lingeringsoul]

Ok noted.

I heel toe-ed when I downshift and that's when the lock occured.

then need to practice heel and toe a bit more.....that used to happen to me as well

Edited September 13, 2006 by lingeringsoul

[8110]

Ok. Thanks guys for the explanation. Will practice more.