Horsepower ratings?

[Stylo]

This guy is pretty handy on his YZ490 too!! It's well worth watching the clip...

http://www.youtube.com/watch?v=Lmb2k...eature=related

That's a good clip , nice one

[Crasherfromwayback]

That's a good clip , nice one

So are the other 'Superbikers' ones. Check them all out. It's what made me take up road racing on KX500's.

[Jay GTI]

Yeah the boys were going hard out eh! Eddie Lawson has always been one of my heroes! Great to see him stuff Jeff Ward in the dirt section...although Eddie was a good flat tracker anyway.

When I was a youngster, my two heros were Eddie Lawson and Alain Prost.... so it was hardly surprising that when I smoked, my ciggy of choice was Malboro Reds....

[Stylo]

So are the other 'Superbikers' ones. Check them all out. It's what made me take up road racing on KX500's.

Will do now... Cheers

[scorry]

anyone want to explain why the hp has dropped by 10hp from 2011 - 2012?

[scott411]

it hasn't,

Dyno's vary their readings, and also the air temp makes a huge difference, Dyno's are good for tuning as they give a base rate, and you can change things to see what happens, but you need to keep all the other variables the same, inlc air temp and pressure, etc

[Crasherfromwayback]

it hasn't,

Dyno's vary their readings, and also the air temp makes a huge difference, Dyno's are good for tuning as they give a base rate, and you can change things to see what happens, but you need to keep all the other variables the same, inlc air temp and pressure, etc

Next time you're in Welly come by and have a perv at our dyno Scott. We take the rear wheel out and drive a huge hydraulic pump. No wheelspin and slippage here!

[scott411]

Next time you're in Welly come by and have a perv at our dyno Scott. We take the rear wheel out and drive a huge hydraulic pump. No wheelspin and slippage here!

will have to do that, it wasn't because harleys were to gutless to sping the drum????

but you would agree taking one person's dyno and comparing it to yours would not be a fair representation always

[eelracing]

Now we know it's a setup! A poxy old YZ490!!?? :

anyone want to explain why the hp has dropped by 10hp from 2011 - 2012?

Jap snake oil sales have come a long way in the last 30 years.And that uphill sand blast has more real world relevance than any dyno.

In 30 years youd think MX hp would have improved the same amount as roadbikes have by now.Can anyone explain that?
Oh that's right controllable power to the ground is the catchcry of the masses...so lets add valves,cams, chains and other expensive and overweight crap to "slow them down"and be able to be ridden by the average joe.

Shit!! pass the smelling salts next they'll be selling us traction control.

[Crasherfromwayback]

Jap snake oil sales have come a long way in the last 30 years.And that uphill sand blast has more real world relevance than any dyno.

.

Did the 450 have a paddle tyre on it like the 490?

[Crasherfromwayback]

will have to do that, it wasn't because harleys were to gutless to sping the drum????

but you would agree taking one person's dyno and comparing it to yours would not be a fair representation always

Some do mate!

Yeah...gotta always compare apples with apples!

[eelracing]

Did the 450 have a paddle tyre on it like the 490?

Could'nt tell ya Pete but it's fat ass still dug in and lost power...hence the downchange.

[Crasherfromwayback]

Could'nt tell ya Pete but it's fat ass still dug in and lost power...hence the downchange.

Yeah he certainly got a bit bogged down there for a while.

[Crasherfromwayback]

Shit!! pass the smelling salts next they'll be selling us traction control.

Think this might be a bit of you mate...

http://www.bikeexif.com/honda-cr500

[scott411]

Jap snake oil sales have come a long way in the last 30 years.And that uphill sand blast has more real world relevance than any dyno.

In 30 years youd think MX hp would have improved the same amount as roadbikes have by now.Can anyone explain that?
Oh that's right controllable power to the ground is the catchcry of the masses...so lets add valves,cams, chains and other expensive and overweight crap to "slow them down"and be able to be ridden by the average joe.

Shit!! pass the smelling salts next they'll be selling us traction control.

there has been passive traction control in dirtbikes since the late 90's, built into the cdi, throttle postion sensors started out on 2 strokes around the same time

the reason we have not had massive power increases in dirtbikes is because of traction, we only have so much, I love 2 strokes as much as the next guy, but around a mx track the fourstrokes are faster, deal with it,