Has anyone tried this?

[OffroadX]

I've inadvertently tried the opposite on several occasions, trying to climb a hill, failing, and forgetting to shift out of D1 as I roll back down on the brakes. Kills it every time.

Brent

[Toy Man]

Last weekend I had a chance to try a new
technique using my automatic on steep
downhills.

I put the brakes on about 1/3 to 1/2 way and
then accelerated just enough to move the X
downhill while keeping the brakes on.

It seemed to work very well on hard packed
dirt with a loose dirt over-layer.

This is from Keith Hart's EXCELLENT
off-road driving manual at
Keith Hart

Did not have a chance to do a comparison
with braking alone and haven't tried it
on slippery surfaces.

If you have tried this, I would welcome
your feedback.

Toy Man

[evansxterr]

I know the X won't do it but sheesh,what a sight!! I saw a semi truck (Autocar) at a delivery site once that did somthing amazing. The driver inadvertantly let the truck start rolling backward when he was in a forward gear, it emitted a horrible noise and then began smoking somthing horrendous. Turns out that the engine (cant remember the make) can end up running backwards in this situation. It turns the exhaust into an intake and intake into exhaust etc. It equals instant death for the air filter but supposidly thats it.

[OffroadX]

A diesel could very well run backwards, since the fuel is injected directly into the combustion chamber near TDC. On gasoline engines, it's not possible since it gets injected into the intake side, which is the exhaust side if it were running backwards.

Brent