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is it a bad to "rev limit" our bikes...???

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#24 ·
<<<Free revving any motor on a consistant basis is never good, especially on a cold motor.>>>
correct, you should actually never do such stuff to an engine.
blipping the throttle is one thing, but yanking it up somewhere near the rev limit with no load is just asking to wreck stuff
The rev limiter is intended for an engine under load.

I'll admit one time I got pissed about a next door neighbors dogs where I used to live , pulled out my H1 Kawasaki 3 cylinder 2 stroke with open chambers , backed it up to the fence, and reved the shit out of it until it literally broke a spark plug.
That spark plug was worth it that time though..
Once this chick kept jamming her car up into left lane traffic that was flowing south on 101 down here near , myself and others in the right lane gave her no quarter to jam into our lane, and at one point she had to slow,
I rolled past her on the gixxer and could not control it....I yanked the throttle right next to her..I think she pissed her pants, she stopped driving like a jackass....
but I really really try to not do that stuff, not good for the engines
 
#25 ·
V2Rider said:
Shouldnt need to hit the limiter under load or not. Peak power drops off after around 12-13k.
Click to expand...

Almost right. :D

There are situations where grabbing another upshift at peak power (14000ish on a 600) will put you shifting up, then right back down again on a track. So you are better off to use the "over rev" (not to be confused with reving past rev limit, over rev is a term for the RPM range above max power for those who dont know) to save a shift on track, and sometimes you will just hit rev limit.

But I know where you were going with that :D


To the OP. Bumping the rev limiter while the bike is accelerating wont hurt it under normal conditions. HOLDING it at rev limit, normally wont when under load either...... usually.

Bumping it in neutral, normally wont hurt it either..... and the great thing about suzukis is it drops the rev limit a bit when it knows its in neutral or the clutch is pulled in to keep you from hurting the bike. But a rapidly acclerating motor, with no load WILL accelerate past rev limit briefly believe it or not just simply due to inertia.

banging the bike off the rev limiter in neutral is risking floating the valves, which is a BAD thing, or even dropping a valve keeper, again a bad thing.

There is NO reason to bang the bike off limiter, or even bump the limiter in neutral.
 
#28 ·
Here is my view, and correct me if im wrong.

Hitting the rev limiter causes extreme wear on the connecting rods and bearings. The rods are built to have compressional strength, the crank pushes up on the rod and the ignition of the fuel and air presses down on the rod, this is the job the rods are purpose built for. What a rod is not designed for is tensile strength, such as when one of those forces acting on the rod is removed (the ignition of the fuel and air) and rod is forced to pull the weight and foward momentum of the piston back down, causing damage to bearings and the rods.
 
#30 ·
matty tampa said:
im sure we can all go on youtube and find a thousand (exhaust vids) of guys that are bouncing off the rev limter,like its nothing...

so basicly,there all slowly fuggin up there engines?
Click to expand...
First off, you have to understand that sportbikes nowadays are tested and tested and tested. The amount of R&D that goes in would not allow a bike to get fucked up cause you bounce it off the limiter a couple times. The company would go belly up if that was the case. Its not to say that there engines will be fucked up, but if you were to look at the live of a engine that has been ridin correctly and one that has been ridin to max rev, which one logically will give out sooner. A lot of people describe engine miles, when really what is more accurate is an engines total amount of revolutions. An engine reving at 16k is roughly wearing away 2x as fast as one at 8k... Assuming that no mileage is being gained while sitting at a stoplight, the bike at 16k will not last as long(in time) as the one at 8k. Thats my thoughts...

-Tom
 
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#31 · (Edited)
matty tampa said:
the reason i ask is simple,first off i see pepole doing it all the time and second is i just bought a new slip-on for my first real bike ever

lol
Click to expand...
Judging by your screen name, you are in FL, right? That is arguably the one place in the world with the highest percentage of clueless idiots on bikes... No shit. :thumbdown

Please don't be one of those guys :D
 
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#33 ·
Sad thing is, before any bike leaves the factory be sure they're gonna stress test it
max 7500rpm for the first 800km? Just watch that little japanese at the end of the assemblyline
grab a handfull of throttle, reving the Shit out of it for longer than you can bare then packing it up
sending it to it's new proud owner :D
 
#35 ·
You should never rev an engine thats not under load, the limiter is there for the engines protection during exceleration not for free revving it all the time with no load on it. ZThink of how much more loose all the parts inside the engine are when its not loaded pulling the bike very tempting for something to shift and kato.
 
#36 ·
lucassm said:
You should never rev an engine thats not under load, the limiter is there for the engines protection during exceleration not for free revving it all the time with no load on it. ZThink of how much more loose all the parts inside the engine are when its not loaded pulling the bike very tempting for something to shift and kato.
Click to expand...
What on Earth possessed you to bump a 3 year old thread?

:banghead
 
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#39 ·
Bouncing off the rev limiter around a turn is a great way to increase traction. The crossplane crank yamaha serves the same function, putting the power down in bursts between longer intervals. If you think about it this is exactly what the rev limiter will do.
 
#40 ·
:facepalm
 
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chris.c
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