Birth of a legend: How Ducati reinvented the Monster

Ducati list the CV as 80 and if that is the same as BHP then it's a bit different from the 67bhp as tested by one of the magazines recently............
 
Steve748 said:
Ducati list the CV as 80 and if that is the same as BHP then it's a bit different from the 67bhp as tested by one of the magazines recently............
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Yes it is.
There is a loss of power from combustion to rear wheel. All manufacturers (just about) quote crank bhp not rear wheel bhp - that's what is measured on a dyno.

Magazines will always quote rear wheel bhp in a test as they bung the bikes on a local dyno. (dynomometer)

Some companies will measure crank figures but it is far easier and quicker to get wheel figures.

Different dynos also quote different figures (just to help confuse the issue)

It depends: -
1) on the dyno it is measured on, is it well maintained?
2) if the bike is strapped down tightly
3) the ambient air conditions on the day, temp, pressure and so on.
4) chain tension.
5) rear brake condition

and more!!

There is a whole technology behind the measuring of bhp - it can be quite a minefield at times. I used to run one for a living in another bike shop.

Mart
 
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