bengie

i have been informed recently that as a direct result of the decent amount of camber on my rear wheels i have higher transmission losses on my car. now i know that is a perfectly reasonable conclusion but it was suggested that my excessive camber could be costing me about 20WHP, does this sound reasonable?

if so then i might well gain 20WHP for under £300

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owner of a skoda octavia 4xvrs3

Goochie

Seems a bit high to me (in a totally non-scientific, finger in the air kind of way)

kenny

some cheap horsepower there

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bengie

possibly, would be nice if its 100% right

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owner of a skoda octavia 4xvrs3

Goochie

I think its a bit like saying you'll gain 20BHP by putting more air in the tyres. I understand the thinking behind it but just think the decimal point is in the wrong place.

Tom_vRS

20WHP? No chance. Maybe 5-7bhp, but for that I'd expect it to be waaaay out...

Just my humble opinion of course.

If it is so, then wahay!!

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bengie

by the way i am running a fair bit of rear camber, i'll go take a picture

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owner of a skoda octavia 4xvrs3

ric04vrs

i cant see how having more negative camber can make a difference to your wheel HP , if you have a slightly smaller tyre contact area due to the negative camber , wouldn't that give you less frictional losses or is it something to do with the way the drive gets to the rear wheels through the diff , just seems a very high figure for a bit of neggy camber

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ScoobyChris

Aren't the rear wheels only driven when the front wheels slip so WHP should be unrelated?

Chris

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devonutopia

I "think" WHP is basically the power at the end of the driveshaft, not at the point of tyre. When you see these engines strapped onto a dyno, the sensor always seems to be bolted on the end of the driveshaft. So essentially, WHP is simply "post gearbox" or "post haldex" in this case? How the WHP is put down to the ground is obviously something the choice of rubber and contact area / camber affects.

I was told with mine, that it had an unadjustable negative rear camber of about 1 degree, which is apparently what all the uber scoobs go to get their rear camber changed to.

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bengie

WHP is what it says it is jason, the power at the wheels. the make/model/size of tyres affects tranny loses as does the pressure of the tyre, if you run race slicks compared to cheapo tyres your transmission loses will be affected again as the overall resistance of the transmission system between the engine and the tarmac has changed. what also affects transmission loses is the angle that drive shafts sit at as a cv thats sitting at 10 degrees is less efficient than a perfectly straight drive shaft.camber, toe, wheel size, wheel weight, worn cv's etc etc all have a bearing on transmission losses. i was just wondering how much difference the camber might actually make?

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owner of a skoda octavia 4xvrs3

ScoobyChris

And some of the not-so-uber scoobs had it set to that too Good old Powerstatiion

Chris

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