R500 Refresh the results are in....

[Peter T]

[Peter Carmichael]

now have 210 bhp at the rear wheels to play with (an increase of 20 bhp over the last engine)

 

This is merely a consequence of misunderstanding the process of measurement. You do not have 20 more bhp providing motive power on account of this observation.

 

You have changed the diff and the gearbox. You have changed the roller speed at which the testing takes place.

 

and ... not denying that your engine is great now and significantly improved *thumbup* but you should concentrate on the flywheel figures and the shape of the power curve rather than just the headline figure.

 

 

Edited by - Peter Carmichael on 6 Mar 2008 12:12:38

[Peter Carmichael]

Peter and Adam you could both argue over what percentages wheel/transmission losses are and yes every dynoe is different!

 

I am arguing that stating a percentage is wrong and misleading as there is...

... NO causal link between *power* and *losses*

... there is a causal link between *roller speed* and *losses*

 

But the fact is that Mark uses the same dynoe and his figures are a TRUE relation to the work he has had done

---

 

Only the figures at the flywheel are a TRUE relation to the work he has had done.

 

Edited by - Peter Carmichael on 6 Mar 2008 20:54:15