Is it Bad to...........??????

[FireFly]

Hey guys, I was cleaning and lubing my chain today and I needed to heat the chain up so the lube would adhere to it. my bike was on a rear stand so I started it up , put it into 1st and started spinning the back wheel suspended off the ground. I rev'd it up to about 10,000rpms a few times and then held it at about 4,000 to try and warm the chain up. Now I know this was probably a bad Idea considering what could of happened((( the stand slipping out sending the bike into wall)))but I did it anyway. The chain didn't really get that warm so I ended up going out for a quick ride.. My Question Is," Can wacking the throttle and spinning the rear tire (in gear) while the tire is suspended off the ground do any damage to the transmission/clutch/etc...????????I didn't think of this until after I did it.

[ZX-12R]

It won't hurt the tranny or clutch but it is never a good idea to rev the shit out of your engine when it is not under load.

[FireFly]

What can reving it up with out load on the motor do???If it wont hurt the tranny or the clutch, what is at risk for being damaged reving it up to 10,000rpm. the redline is 14,250rpm.., ?????Thanks

[Hardcore]

Originally posted by FireFly
What can reving it up with out load on the motor do???If it wont hurt the tranny or the clutch, what is at risk for being damaged reving it up to 10,000rpm. the redline is 14,250rpm.., ?????Thanks

revving with no load can overrev(overspin) the engine causing valves to hang up,drop,hit the piston,timing chains to jump,etc.- this is all bad stuff!

[RandyO]

Originally posted by FireFly
What can reving it up with out load on the motor do???If it wont hurt the tranny or the clutch, what is at risk for being damaged reving it up to 10,000rpm. the redline is 14,250rpm.., ?????Thanks

engine cold or warmed up?

reving engine/ blipping throttle of cold engine is not good for it

[FireFly]

What type of symptoms would be present if i did any damage from the reving with no load. Would it be slightly noticable or would I know beyond a shadow of a doubt that SOmething is F@#ked.. Thanks

[OreoGaborio]

when you put a connecting rod through your block, or snap off a valve & make it disintegrate, you know you did something wrong

As long as the engine's beginning to come up to temp it's no big deal, it can take it. Reving an engine under no load is equivilant to smoking cigarettes... it won't kill you right away, but if you do it alot over time it just starts to take a little bit off the life of the engine.

I do the same thing you did sometimes w/ the bike on the rear stand to warm up the chain, cept i get it up to 6th gear & only bring the RPM's up to 6-7k. At that point the rear wheel is traveling at 75mph or so & it'll warm it up a little bit.... i'm sure it's not as much as if i took it for a ride, but it helps.

Just make DAMN sure that thing's SOLID on the rearstand.

[FireFly]

i sat on the bike with my foot resting on the back brake while watching the stand to see if an oh Sh#t moment was approaching, Its kinda nerve racking spinning a wheel with the bike on the rear stand > dude if that stand gave out I would have shit a pickle...For now on I'm just gonna ride it to warm up the chain ..Plus my stand isn't a rear spool stand as you know..

[Degsy]

Originally posted by FireFly
What can reving it up with out load on the motor do???If it wont hurt the tranny or the clutch, what is at risk for being damaged reving it up to 10,000rpm. the redline is 14,250rpm.., ?????Thanks

You asked the question, then argued with the answer.

Running your bike that high, in gear, on the rearstand is not a good thing to do.

1. You risk dropping the rear wheel down and catapulting the bike forward.

2. You aren't running any air across the radiator, so the coolant isn't being cooled and neither is the motor. Just like being stuck in traffic

[TTD]

Don't do it... it is inviting damage and disaster.

If you play poker, you know about "pot odds". That means taking a risk when the payout is worth it. You definitely have crappy pot odds in doing this.

The absolute minimal benefit you will receive by lubing a slightly warmed chain is way overshadowed by all of the potential downsides.

The most you should ever do with your tire on the stand is drop it in gear and gently ease out the clutch with no throttle to ensure the gears and clutch engage properly.

I have used this method to ensure the tranny is functional after a clutch or tranny rebuild, etc.

Oh yeah... and all of you that are giving your bike gas while it is on the stand... please set up the video camera ahead of time.

It's only a matter of time before something worthy happens and I do get a kick out of videos where it is PAINFULLY OBVIOUS beforehand that the person is about to do something REALLY STUPID!