BMW 1000rr valves at 14,000

[Black_peter]

Cut-a-way view!
[ame="http://www.youtube.com/watch?v=VSDa-EUT3ZE&feature=player_embedded"]YouTube- BMW S1000RR Technical Video - Valves in Motion High RPM[/ame]

[WildSide]

that was pritty cool to see.

[hardlydangerous]

And people still dont see the need to use the best oils possible

thats a valve opening and closing every 4 revolutions, now just think about how fast the pistons are going up and down with every revolution

[allblackkat]

Oh lord, make it stop... That sounds damaging...

[H-2 CHARLIE]

that motor has a 16,000 rpm safe limit and can go to 18,000 rpms .. it comes de-tuned at 183 rwhp or 193 hp at the crank

[ne-oublie]

Wow, pretty cool. Never seen valve springs and caps rotate like that.

[Black_peter]

Sorry, I should have posted that the first half is kinda boring..

Ne-ouble, that was wild huh? At first I thought it was an illusion.

[CenCalKat]

That was frickin' impressive!

[Black_peter]

Hey, I just realized that if the springs and caps are rotating that means there is some valve float at that speed..

[Psycho1]

repost, Charlie posted it in the lounge last Friday.

[loudnlow7484]

I think that really needs to be shot on a very high speed video. Still impressive, though.

[Black_peter]

I think that really needs to be shot on a very high speed video. Still impressive, though.

I'm guessing it was, you tube just doesn't host 10,000 FPS

[loudnlow7484]

I'm guessing it was, you tube just doesn't host 10,000 FPS

eh, you're probably right..... and can you imagine how long that video would be if they slowed it down to 30 fps? I'd still be watching it.....

[hardlydangerous]

Hey, I just realized that if the springs and caps are rotating that means there is some valve float at that speed..

no
all springs and caps will spin at high rpm.
its harder for the springs to twist/spin under load (compressed) then when the valve is fully closed. Any valve float at that speed with such engine tolerances would destroy the valves and pistons instantly. The springs are doing their job perfectly.

[Trackerrrr]

I always thought valve spin was a good thing to prevent the valves and seats from wearing together at one spot.