How do they know at a track day what your 3/4 Max revs are? Do they usualy ask you what it goes upto?

CECs are normally 4500rpm & BECs are 3/4 max rpm for static testing.

Some tracks have drive by testing as well so i guess they can test higher than 3/4 revs unless you know the position and short shift.

This is just a staticic test at 102DB.

When I've done my bike trackdays (not done a car one yet!) they ask you the size of your engine, mine was a 600 so they told me 7500revs, 1000's get told something like 6000 and the Vtwins something like 4500...

Steve

[Edited on 12/10/07 by worX]

They usually ask. They're not dim though and will look at your clocks to see what they go up to. I guess they're wise to the normal range of engines in BECs. Their maths isn't great though and their idea of 3/4 revs can be a bit vague.

Unless you are unlucky enough to find a millitant organiser most will do everything they can to get you out on track. For example:
Tester: "Oh a bike engine - what is it?"
Driver: "Yamaha R1"
Tester: "New or Old"
Driver: "Old"
Tester: "Max revs about 11k then?" (almost certainly knowing it's more)
Driver: "Errr Yeah."

It's still a bit of a minefield though!

It's a real grey area. I've never failed to get on track but it's been so close at times. And that's with me being economic with the truth on the redline.

Some marshalls test you like a bike and you're at 6k revs, easily inside the limits. Last time my car was tested it was 102db at 7.5k revs static. R1 can, blade engine.