How good are dyno charts and peak HP claims?

[schrodingers cat]

mine was on silver paper, so that mean mines only second ?

There is always some bastard out there prepared to spend their way to a win...

[T.W.R]

http://www.kiwibiker.co.nz/forums/sh...post1129263135

[Robert Taylor]

My 5 cents worth and I used to own a Dynojet dyno. No statement of what is best or whatever as its off my radar screen and of no concern.

Japanese DIN horsepower rating is the standard that the Japanese manufacturers quote. Small value units giving high end numbers.

Many proffessional dynos measure in SAE horsepower, bigger value unit giving lower end number.

Manufacturers usually quote horsepower measured at the crank, theres another 10 to 15% loss to the rear wheel

PAMPHLET horsepower, self explanatory. Probably scripted by the same marketing nerds who use that misleading phrase ''fully adjustable suspension''

Im not sure what the case is now but with the old dynojet dynos if the air intake temperature sensor was placed in a hot place ( such as behind a hot radiator ) the horsepower and torque readings would be markedly improved. But the size of the correction factor on the printouts was a dead giveaway. Im sure that worldwide many unscrupulous dyno opeartors have used this trick.

All dynos are calibrated differently and in the end event it is a comparator, it matters not if its calibrated in ''bananas'', if you end up with more ''bananas'' in the right places then happy days!

But of course there is always the primeval urges. ''My bikes got more power than yours'' Similiar to ''my dicks bigger than yours'' Ho hum....

[Pussy]

Similiar to ''my dicks bigger than yours'' Ho hum....

So do you wrap it around your leg and pretend it's a varicose vein?

[Robert Taylor]

So do you wrap it around your leg and pretend it's a varicose vein?

No, a third leg

[koba]

So do you wrap it around your leg and pretend it's a varicose vein?

No, a third leg

You guys are lucky to get away with such easy tricks.

Everyone always asks me why I'm dragging a sleeping bag around with me...

[st00ji]

i never understood the HP pissing game myself. there are so many other variables in how fast something goes, especially a bike.

surely the real boasting right is lap times or similar?

[Pussy]

i never understood the HP pissing game myself. there are so many other variables in how fast something goes, especially a bike.

surely the real boasting right is lap times or similar?

Exactly! Good for "before and after" when tuning etc too!