Overhead Cam at 14K RPM

This video shows an operational cutaway of a BMW S1000RR — a 193HP superbike — bumping against its 14,200RPM redline. A cam and valvetrain at 118 cycles per second is an amazing sight (and sound)

• Category

  Autos & Vehicles

[bugeyewagon]

i cant belive i just learnd how to play mary had alittle lamb from a youtube comment on a video about engines

[kjkolkowski]

This makes me appreciate engines about 100 times more after seeing what they go through for thousands upon thousands of hours..

[MrZbaser]

but will it blend?

[midnightplayer11]

I wonder how 20'000 rpm sounds like

[lookitsthescenekid]

whoa.

[lawrence bridgewater]

that was cool as hell



[Adam Meddaugh]

Stick your finger in it.

[YAMAHA Fritz]

thats no vtec

that a normal camshaft

[Rekoyl116]

no shit? thats clever

[PeterDad60]

Double overhead cams with shim under bucket cam followers made a an appearance at Indianapolis Motor Speedway in a French Pugout automobile in 1914. The design came from Belgum. Gee I wish I could spell). This engine has finger cam followers instead of inverted bucket with shims.

[PeterDad60]

See my reply to Breze84. I think we would hear a ringing sound if the valves were bouncing (floating) off the rocker arms (fingers) being acticulated by the over head cams. I did not hear such a ringing sound so I believe there was no valve floating. I also told him you could have used strobe lights and high speed film as another way to check for valve float.