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1980 KZ13 Project 9 months 2 weeks ago #27660

  • Divman
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Hey there Kawboy
I've used the Orion box.
I'm not arguing with what the "book" says, merely stating what i have done and it seems to be working!
Weird and wonderfull things happen in the dark tip of Africa !!!
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1980 KZ13 Project 9 months 2 weeks ago #27672

  • Phil
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So the 130 bhp, is that measured at the rear wheel?
Only dead fish go with the flow

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1980 KZ13 Project 9 months 2 weeks ago #27675

  • Bucko
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So the 130 bhp, is that measured at the rear wheel?


Not sure where the OP is measuring but BHP is by definition a horsepower measurement before (or in the absence of) losses due to accessories including alternators (difficult to do on a typical motorcycle engine) and transmission.
Hello from Canada's We(s)t coast.

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1980 KZ13 Project 9 months 2 weeks ago #27677

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So the 130 bhp, is that measured at the rear wheel?


Not sure where the OP is measuring but BHP is by definition a horsepower measurement before (or in the absence of) losses due to accessories including alternators (difficult to do on a typical motorcycle engine) and transmission.

Bhp is generally measured at the rear wheel on dynos. Manufacturer's bhp is generally measured at the crank before any losses are taken into account.
Only dead fish go with the flow

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1980 KZ13 Project 9 months 2 weeks ago #27717

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Bhp is generally measured at the rear wheel on dynos.


BHP can't be measured at the rear wheel (RWH) as there's no easy way to interpolate the losses between the BHP and RWH
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1980 KZ13 Project 9 months 2 weeks ago #27721

  • Kawboy
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I guess the bottom line on the "Horsepower" issue is Divman sent it in and had it dyno'd and the results reported back was "131 BHP". So no one's going to go to the trouble of trying to subtract any losses. and without really special tooling, no one's going to measure the output at the crank, so the results would have been at the Rear Wheel. Strap it down, run it up, take a reading and report to the customer.
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