BHP!

[will]

i understand the 16v to have 134bhp as standard is this at the flywheel? as in the members area nearly all 16v have less, is this a wheel or flywheel difference?

 

[Rich-D]

Yes, the figures quoted by manufacturers are almost always at the flywheel.

Notm sure about the ones in the members area.?!

 

[will]

cheers for that!

 

[timrud]

Isnt it 137bhp?

In the members area its at the wheels I am sure. Is it about 20% lost through transmission etc.. or is it less?

 

[wongy008]

right 137 is a flywheel figure for a std car. a 16v can make between 130-140 depending on condition but it can be even less if the car has been neglected

the other figure your on about if the figure at the wheels which is a more appropriate measure of power of car.
tranmission loss is between 20 - 30 %

wongy

 

[Rich-D]

Transmission loss is not gonna be 30% on a fwd car mate, thats into 4wd territiory and far too high. A good "ballpark" figure for a modern fwd car is about 20% loss, or thereabouts.

Here is an example of a rolling road printout for my old car, a Peugeot 106 GTi. It shows both the power at the wheels and the power at the flywheel, taken in 4th gear.

http://members.lycos.co.uk/Pug106GTi/Misc/RR_Print.jpg


From this graph we can work out that the loss was actually about 20% in this case.

HTH

 

[Nick Read]

Well if anything, theory would suggest that the trans loss on a front wheel drive car should be even less - between 10 and 15%. But repeated testing of different cars on different roads, shows that 20% is about average for a Clio 16v.

The figures quoted are all at the wheels.