Cactus Jack
Master Spanner Spinner
- Joined
- Jan 18, 2007
- Messages
- 2,742
- Reaction score
- 53
Cactus, Okay if I read you right then your belief appears to be that the 2 strokes of the same CC have an unfair advantage of some kind. On the other hand you agree that the 4 strokes yield faster lap times. One could claim you've contradicted yourself
So you think that :
YZ 250 = 250 cc x 10,000 pulses per minute @ 10,000 rpm = 2,500,000 cc/pm
Is equal to :
YZ 250F = 250 cc x 5,000 pulses per minute @ 10,000 rpm = 1,250,000 cc/pm
For a start ... I never said that a YZ250F was faster than a YZ250 ...... I basically agreed that a 450F can be faster than a 2 stroke 250 ..... with the right rider on board .... A bike only goes as fast as the rider can make it go ........ so a fool on a 450 can get flogged by an 80 ......
[One could claim you've contradicted yourself]
WTF ??? It's all about the power delivery suiting the track .... for instance you can change the cam profile in a 4 stroke (say CRF150R) to produce 27.5 peak HP @ 12,000 RPM but pull slower lap times than you can on the same bike with a stock cam or even smaller than stock cam ....... purely because you've put the power curve out of whack to suit the type of track you're on .... the bike MUST suit the track .... that's a well known fact .... Sprint car racers , drag racers , rally car racers , short circuit and speedway racers , ALL know that !! Stock MX 2 strokes do NOT suit a lot of tracks ...... BUT 4 strokes do because you can adjust their power better with your right hand .......
You can actually pull faster lap times on a bike with LESS power ...... The main reason why most two strokes are slower is because the turkeys riding them haven't got the physical prowess or capability to keep the things hammering thru turns .... the riders sh*t themselves and back off all the time .... most go thru corners in 2 gears too low ...... they can't keep the things singing thru the gears like they can on a straight smooth track ..... that's why they want to ride a bike with a quick powerband hit that makes up for their riding inability and fear .....
Along comes a new wave of physically strong 4 stroke racers who hammer late into turns then power slide or keep their bike revving thru the same corners two gears higher than the two stroke guys and the 2 stroke crowd can't hack it ...