rev limiters?

Message

VermilionX · #1 Post by **VermilionX** » Wed Jun 14, 2006 2:06 pm

i think my bike has one. do all modern bikes have these?

so does this mean it will prevent me from red-lining it?

i've pushed 1st gear many times but i always ease out on the throttle before i hit the redline.

how exactly does a rev limiter work?

#2 Post by **fireguzzi** » Wed Jun 14, 2006 2:08 pm

no it will not prevent you from red lining.
It will stop you from going too far past redline so your engine doesnt go kablewie.

I believe it affects your ignition, making your engine miss and skip.

It's just away to protect the engine.

IT WILL NOT AFFECT THE PERFORMANCE OF YOUR BIKE!!!! DO NOT ATTEMPT TO OVERRIDE IT!!!!!!

#3 Post by **Jamers!** » Wed Jun 14, 2006 2:44 pm

fireguzzi wrote:no it will not prevent you from red lining.
It will stop you from going too far past redline so your engine doesnt go kablewie.

I believe it affects your ignition, making your engine miss and skip.

It's just away to protect the engine.

i believe that it kills gas to the bike, not all the way, be a significant ammount so taht you can not longer accelerate at that level and let the RPMS falls, at least thats basically how it works on a car, so im guessing the same for a bike

fireguzzi wrote:

IT WILL NOT AFFECT THE PERFORMANCE OF YOUR BIKE!!!! DO NOT ATTEMPT TO OVERRIDE IT!!!!!!

+1, dont try to remove it and dont have anyone professinally remove it

JWF

VermilionX · #4 Post by **VermilionX** » Wed Jun 14, 2006 2:46 pm

no no no, i will never remove it. im just curious how it works.

in fact i like it since it protects the engine and it means i don't have too worry too much about pushing her.

still, it's not like i get many chances to push her that hard.

#5 Post by **fireguzzi** » Wed Jun 14, 2006 2:54 pm

from msd FAQ

A rev limiter is placed in the electronic circuitry that prevents the engine from over-revving. At a pre-set rpm - say 7,000 rpm - the rev limiter engages. Once the engine reaches 7,000 rpm, it interrupts the signal to the coil, alternating on/off, slowing the firing sequence, and preventing the engine from rapidly shooting up in rpms.

VermilionX · #6 Post by **VermilionX** » Wed Jun 14, 2006 2:57 pm

ooohhh!

i wonder where the rev limiter kicks in on my bike.

bec it can still go even when im already very near the redline but i just ease off the throttle.

The Grinch · #7 Post by **The Grinch** » Wed Jun 14, 2006 4:49 pm

The rev limiter only prevents you from over reving the bike using the throttle.

It won't stop you from doing so by downshifting to 1st gear at 130 MPH and dumping the clutch.

#8 Post by **Jamers!** » Wed Jun 14, 2006 4:52 pm

XM23 wrote:The rev limiter only prevents you from over reving the bike using the throttle.

It won't stop you from doing so by downshifting to 1st gear at 130 MPH and dumping the clutch.

hmmm, that would be. . . intresting. . . the jerk from doing that, well i donno but it would be intresting to see.

JWF

jmillheiser · #9 Post by **jmillheiser** » Wed Jun 14, 2006 5:35 pm

downshifting to 1st and dumping the clutch at 130mph would do more than cause the engine to become disaquinted with its internal parts, you are also pretty much garunteed to have a nice specacular crash as you lose control of the bike from the back end losing traction.

your Gixxer does have a rev limiter. it usually kicks in just above redline. My bandit is 10 years old and even it has a rev limiter (kicks in just above 12,000rpm on the bandit)

J.R. Bob Dobbs · #10 Post by **J.R. Bob Dobbs** » Wed Jun 14, 2006 6:37 pm

Rev it up and see, but do so at your own risk.

My 95 Nighthawk 750 "redlines" at 8600rpm, and the motor shuts off around 9k. I have encountered the limiter a few times, the first time by mistake, it lets me know when it's absolutely positively time to shift

My user and shop manuals make no reference to it.