Dyno results from today

[Paul Bryant]

Hey Bull, so who would be paying Nels to do his thing ?

 

[Grumpy Ole Codger]

Hey Bull, so who would be paying Nels to do his thing ?

The Christmas Fairy perhaps?

 

[AussieMick]

The figures in the brochure are at the crankshaft, not at the rear tyre. Every dead stock roadster or classic I have done have been between 118 and 122 hp..at the tyre.

Okay, my point was though he has a Dyno with 145 BHP, they come out with 140 BHP

 

[Martin-Brighton-uk]

I think the dyno report would refer to rwhp, it can't determine BHP at the crank. Will call the garage and ask them. If it is rwhp of 145, then the actual crank BHP would be +10% ish?? so near to 160bhp?

 

[1olbull]

Hey Bull, so who would be paying Nels to do his thing ?

I'll cover that.

 

[Neville Lush]

They come out with 145 at the crank , which is approximately 120 at the rear wheel.

 

[Penner]

My Dyno says that loss from clutch to rear wheel is 10-15 hp.

Prost
Ulf

 

[1olbull]

Hey Bull, so who would be paying Nels to do his thing ?

Paul,
If you reckon to go forward and do this, I should also get hands on a Carp and do a comparo of the three?

 

[Neville Lush]

OK, I will rephrase that.... Triumph say their bike makes 145hp, but that is calculated at the crankshaft. Every bike I have tested which has been exactly stock has made 118-122 at the tyre.

 

[barbagris]

My Dyno says that loss from clutch to rear wheel is 10-15 hp. Prost Ulf

I would expect percentage loss and tbh would have expected more as shafts tend to really suck "work" out of drive trains.
Does you dyno differentiate between Belt/Chain/Shaft?