Revs, how high do they go?

[General Madness]

Everybody must love a high revving engine.

Publicly available production model cars, bikes, quads any mode of transport for road use.

Tell me about them.

[R1gtr]

I reckon the highest rpm may be on a 600cc bike, possibly a R6, prob around 14000rpm.

[jjones]

19000
http://en.wikipedia.org/wiki/Honda_CBR250

[Ozzie Osmond]

Race series (cars and bikes) sem to limit cost by limiting revs - so I guess without that the sky is the limit. Let's call it 20,000 for the sake of argument.

So 20,000 rpmin' = 333 rpsec'. Which is a lot.

[HaloGen8]

Ask any Corsa / Saxo boy down the local Maccy D's.

Think they will offer a definitive answer

[Layacable]

I'm sure I remember a 250cc 2 stroke bike a friend of mine had a few years ago hit the rev limiter at 22500 rpm!!!

[eldar]

52,000 rpm.

http://www.bikez.com/bike/index.php?bike=20204

[littleredrooster]

Ozzie Osmond said:

Race series (cars and bikes) sem to limit cost by limiting revs - so I guess without that the sky is the limit. Let's call it 20,000 for the sake of argument.

So 20,000 rpmin' = 333 rpsec'. Which is a lot.

OP said:

...Publicly available production model...

[duffy78]

eldar said:

52,000 rpm.

http://www.bikez.com/bike/index.php?bike=20204

I was just about to post this.

Might as well close the thread lol

[Fubar1977]

True for a turbine engine as posted above, what about achieving that RPM with a "conventional" car/bike engine though?
Is that possible?

[Otispunkmeyer]

Regardless of revs if you actually calculated the piston speed you'd find a lot of engines have pistons that are accelerating and travelling in the same ball park of speeds.

Eg vag 1.9 diesel 5000 rpm ish = 15.3 m/s

Honda nsr 500 , 13000 rpm ish, 16. 9 m/a

F1 engines are significantly faster mind at 24 m/s. anything that revs fast generally has a very short stroke. F1 engines stroke is < 40 mm.

[JonnyVTEC]

Check the Integra type R DC2 piston speed

[Tango13]

Layacable said:

I'm sure I remember a 250cc 2 stroke bike a friend of mine had a few years ago hit the rev limiter at 22500 rpm!!!

That would almost certainly been something like the four cylinder 16 valve fourstroke CBR250RR that was posted earlier, two strokes don't rev that high.

[anonymous-user]

This is pretty high: http://m.youtube.com/watch?sa=X&ved=0CBYQqwQ&a...

[Ozzie Osmond]

General Madness said:

Publicly available production model cars, bikes, quads any mode of transport for road use.

Need to check out those Mazda rotaries. 9,000+ rpm.

No pistons which have to keep making 180 degree changes of direction.

[Tango13]

Otispunkmeyer said:

Regardless of revs if you actually calculated the piston speed you'd find a lot of engines have pistons that are accelerating and travelling in the same ball park of speeds.

Eg vag 1.9 diesel 5000 rpm ish = 15.3 m/s

Honda nsr 500 , 13000 rpm ish, 16. 9 m/a

F1 engines are significantly faster mind at 24 m/s. anything that revs fast generally has a very short stroke. F1 engines stroke is < 40 mm.

The NSR500 ran about a 54mm stroke so at 13,000rpm it has a piston speed of about 23m/s. It's also a factory built race bike so doesn't count.

A Ducati 1198 has a stroke of 67.9mm and will rev to 9750rpm which is around 22m/s.

[Otispunkmeyer]

Tango13 said:

The NSR500 ran about a 54mm stroke so at 13,000rpm it has a piston speed of about 23m/s. It's also a factory built race bike so doesn't count.

A Ducati 1198 has a stroke of 67.9mm and will rev to 9750rpm which is around 22m/s.

Oh right I had read about 40mm stroke but I only had a quick glance for an example!

[Tango13]

Otispunkmeyer said:

Tango13 said:

The NSR500 ran about a 54mm stroke so at 13,000rpm it has a piston speed of about 23m/s. It's also a factory built race bike so doesn't count.

A Ducati 1198 has a stroke of 67.9mm and will rev to 9750rpm which is around 22m/s.

Oh right I had read about 40mm stroke but I only had a quick glance for an example!

The NSR ran a 54mm X 54.5mm bore/stroke (I just checked ) while the YZR and RGV500's ran about 56mm X 50mm yet didn't rev quite so high at 11,750rpm.

[Kozy]

Higher revs aren't impressive if they are couple with a really short stroke.

JonnyVTEC said:

Check the Integra type R DC2 piston speed

Yup, F1 rivalling piston speeds in that B18C.

[Mastodon2]

wormus said:

This is pretty high: http://m.youtube.com/watch?sa=X&ved=0CBYQqwQ&a...

That would be a much better video if it wasn't only available in 240p.