dirtjumpordie, on 15 March 2012 - 01:37 PM, said:
there are facts. 250 2stroke= 46hp 250 4stroke=34hp
250 2stroke full rebuild= $400? 250 4stroke rebuild=$2000?
250 2stroke sound carries .75 miles? 250f sound carries forever?
2stroke lap times = 4 stroke lap times.
how are those facts for you??? I think 4 stroke guys are the ones who need purchase justification when i beat them on my $1500 bike and they spend $9000!!!!!!!1
Those are far from facts (though the noise one can be true if the 'C' rider is compelled to have an open pipe).
A rebuild for the first several 100 hours on a 4S is more or less the same as on a 2s. Pistons and rings, only instead of every 25 hours like a 2S, you go up to 50 for a 4S. The valves only become an issue at the 200 hour mark. I have no idea where you get $2000 for a barrel, valves and piston. I think someone saw you comming.
Hp is not a measure of performance, only max speed. More important is torque, ie the ability to accelerate and how that torque is applied to the ground. Peak HP, if the curve is not nice and flat, is near useless anywhere but Bonneville.
Again, as I said before facts, not made up rumors. I own a lot of 2S and a lot of 4S. I have built a lot too.
No one is going to put much effort into 2S development until there is a market. Bike companies do not refuse to sell certain bikes just to stiff you, they make, develop and sell what the public buys. The public do not buy that many 2S. To make them go into the future will require things like direct injection. That would add a lot of money and weight as well as a huge maintenance
cost. Then you have the emissions issue regarding unburned hydrocarbons and the requisite heated catalytic converter. A lot more cost and a lot more weight.