thumperclone wrote on 02/12/08 at 13:00:44:more than bling, dyno proven increase in h.p. air pressure increases as speed increases
It would be interesting to see how that was proven.
Ram air is nothing new, but it's not a magical source of extra air.
I remember seeing figures for the Ram Air 400 model of the Pontiac Firebird - it had a pair of well-positioned scoops on the leading edge of the hood, which would give about 3% boost at 100mph.
A lot of modern bikes have ram air systems now, but to get any real benefit 2 things are needed:
1. A really big air box to act as a receiver reservoir for the 'charged' air
2. Forward speed over 100mph to see real benefit.
A dyno will tell you just about anything the operator wants you to see, especially when somebody is trying to market a product, and I'm yet to come across a dyno outside of a motor manufacturer's own labs with a powerful enough fan to simulate 100mph forward speed.
For a cruiser bike, that's rarely likely to see over 75mph, ram air is about as much use as tits on a bull.