Quote:
Originally Posted by CL8
Good info on the history of rev limiters MR and RahX!
Now my question is, how much more effective are the rev limiters of today than those of yesteryears?
I mean how safe would it be for me to advise a drive student to get in an empty parking lot or road, push the throttle to the floor, then after 5 seconds with the throttle to the floor, push it in neutral to see how it stops the vehicle?
How harmful would this be on a modern engine, or would it do no to little damage?
Thanks,
cl8
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Simply have your students lift-off the gas a fraction of a second after they flip it into neutral, so the engine does not have time to rev-up much.
Another concern here is the ability of your students to use the shifter properly. They should practise shifting from Drive to Neutral without moving the lever too far and getting Reverse.
If a car throttle is stuck down, an inexperienced driver might get too anxious and move the lever too far, and engage Reverse. On lower-powered cars, the engine would probably stall. On higher-powered and RWD cars, you might just get the drive wheels spinning backwards while you are moving forwards, leading to a loss of control.
And such a move is always very hard on the transmission.
Virtually all automatic transmissions have some kind of interlock device, where you can shift from drive to neutral, but no further, unless you push a button or move the lever in a particular way.
So, have your students practice the shift from Drive to Neutral in the car, with the engine off first.
