125-180cc+ Reply Only

Good day,out of this engine displacement class WHO makes the best HORSEPOWER? True facts no well wishers or Wannabees,who puts the smack down in the Big 2t's? Scooters only,not your daddys road bike but your daily ride!

 

9.6bhp @ rear wheel

anyone wanna try n beat it??!! :w00t:

 

Mines probably about 14HP?
I don't need anymore on the scoot lol.

 

what is the difference in horse power and brake horse power?

 

theres no point in this topic unles people are showing dyno printouts

most people's guesses wil be completely off

#######################

malossi 172
bgm 55mm crank
pm high compression head and skullcap
MRT port job to cases and cylinder
mhr reedvalve
malossi straight inlet and dellorto 28mm
mhr variator + kevlar belt
malossi delta clutch
malossi torque drive
secondary gear up
pm59 exhaust
malossi cdi


bhp depends on how far we go with porting but wont be less than 25hp :bird:

 

Sounds like a good combo Steve,are you doing the porting or someone else? Let me know when you get it tuned.

 

Most of you guys have been on the dyno,right?

 

But if there peoples ''daily rides'' then there not going to be ''putting the smack down''.

The sprint 172's push out about 35-40bhp i think, with 12 sec 1/4 miles @105mph, but thats on pump fuel and no nos so i daresay some european nutters done much better.

 

wrong:

Horsepower is merely the unit of measurement.



Brake horsepower (bhp):

Brake horsepower (bhp) is the measure of an engine's horsepower without the loss in power caused by the gearbox, generator, differential, water pump, and other auxiliary components such as alternator, power steering, and AC compressor. Thus the prefix "brake" refers to where the power is measured: at the engine's output shaft, as on an engine dynamometer. The actual horsepower delivered to the driving wheels is less. An engine would have to be retested to obtain a rating in another system. The term "brake" refers to the original use of a band brake to measure torque during the test (which is multiplied by the engine RPM and a scaling constant to give horsepower).

(so power at the crank)


Effective horsepower, True hp or wheel horsepower is the power converted to useful work. In the case of a road vehicle this is the power actually turned into forward motion as measured on a chassis dynamometer.

"True hp" is generally 10% to 20% less than the engine's "bhp" ratings due to drivetrain losses.

Wheel Horsepower (whp) is the more widely used term for Effective horsepower.

(this is what you get at the wheel and what the DYNO sheets will read out)

Physics lesson over

back ontopic.

 

i stand corrected lol imp:

and mr minor confusion is doing the work anytime now

 

Thats correct...an engine dyno is a brake!!

put simply it brakes against the powered wheel/flywheel and measures the h.p by the force of brakeing it applies!!

Hence the term Brake Horse Power

its the same principle for the flywheel or driven wheels... except theres obviously no transmission losses for flywheel or crank horse power

 

all this technical jargon is makin me dizzy :emb: