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Author Power graph here, can anybody tell me more about the info shown on it? Dave A?
willhouse
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Registered: 11th Jul 06
Location: Sheffield
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13th May 07 at 19:21   View User's Profile U2U Member Reply With Quote
in the link below is a claimed rr graph from a williams clio running an apparent air filter, remap and an exhaust, just wondered if anybody could tell me more about the information shown on the graph and figures in terms of

bhp at the fly
bhp at the wheel
and a torque figure.

not sure if all the info is on there that you need but any info from the picture would be good

http://img.photobucket.com/albums/v670/big_hp/RRmod.jpg
Dan295
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Location: London
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13th May 07 at 19:27   View User's Profile U2U Member Reply With Quote

Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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13th May 07 at 19:28   View Garage View User's Profile U2U Member Reply With Quote
Pwheel is the wheel power
Pmax is the 'flywheel power' calculated using the Ploss figure.
Dan295
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13th May 07 at 19:28   View User's Profile U2U Member Reply With Quote
i thought to get the bhp at the flywheel the engine had to be out of the car?
willhouse
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13th May 07 at 19:30   View User's Profile U2U Member Reply With Quote
well they are bloody good figures then to say that it is a standard williams clio with only a filter exhaust and remap.
AK
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13th May 07 at 19:31   View User's Profile U2U Member Reply With Quote
its theoretical flywheel bhp...

calculated by trans losses etc

[Edited on 13-05-2007 by AK]
AK
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13th May 07 at 19:32   View User's Profile U2U Member Reply With Quote
i doubt it's 150+ at the wheels
AK
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13th May 07 at 19:34   View User's Profile U2U Member Reply With Quote
try this for bhp

torque x rpm/ 5252
willhouse
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13th May 07 at 19:34   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by AK
i doubt it's 150+ at the wheels


thats what i thought and why i posted up
AK
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13th May 07 at 19:35   View User's Profile U2U Member Reply With Quote
and the graph is utter pish... what are the scales all about MPH instead of RPOM
Robin
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Registered: 7th Jan 04
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13th May 07 at 19:39   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by AK
try this for bhp

torque x rpm/ 5252


Might be a little difficult
Dave A
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13th May 07 at 20:05   View User's Profile U2U Member Reply With Quote
looks like they have used a percentage to work out the bhp at fly rather than a correction factor. cant tell anything from the graph, not accurate enough.

also no sign of air temp correction, tyre pressures, barometric pressure correction, vehicle strapdown weight calculations etc....
Dean B
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13th May 07 at 20:15   View User's Profile U2U Member Reply With Quote
One of my friends has a clio williams. Figures are close to that, 174 bhp at fly, 152 at the wheels. Thats standard apart from exhaust system, de cat, and manifold. It runs 14.3's.

 
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