Reply With QuoteYour torque is at the fly wheel.Originally Posted by Goldywaggon
it is weird cos i lost 38BHP from flywheel to the wheels but had 126ibft of torque at the wheels
danny only lost 29bhp from fly to wheels but only had 110lbft of torque.
the guy said my car wasnt dragging at all when it was coming down so said the wheel HP would have been accurate plus there rolling road compensates for difference in tyre pressures etc so it is not an unfair advantage.
i know this dastek rolling road is accurate as there is different one sup my way and people have been to all 3 and 2 were basically the same power graph and the other made a few HP more.
Your torque is at the fly wheel.
i only got one torque figure usually everyone does so danny has 110lbft at the fly?
Should be faster than the hgt and im looking at getting 14.3-5s at the podJust got back from a mr2oc rolling road day and pleased to report i surpirsed a few jap fans. Althought there was a 331bhp mr2 turbo there and i was quite impressed.
Here is my graph. Sadly its not a scan as i had to do with my phone.
red line = Torque, blue line = Eng power, Green line = Wheel power, purple line = drag power??
here are the stats, but they are all in kw. i did a quick conversion and it turned out to be around 158bhp at the wheels and around 198 at the fly Bear in mind though this is on 15psi boost, and i feel quite confident in saying that when i go to the power engineering in a few weeks time with 20psi boost i can get around 210ish bhp
No danny's is at the wheels, it depends on the software and what the dyno operator wants to plot.
If in any doubt check by calculating the power from your torque curve and you will see where it comes from.
im sure my torque was at the wheels
he says i got really good torque because it was runnign lean under 4k revs
Torque is measured at the wheels however your torque is at the fly which can be verified by quickly calculating the power from it.
From your graph at 4000rpm you have around 124ft/lbs of torque, so you have around
124*4000/5252 = 94.4bhp.
Which is what you have shown at the fly wheel.
where did the 5252 come from?
5252 is the constant used to get the power in the units of bhp when torque is in ft/lbs which your graph is plotted in from the equation
Power = torque*rpm/5252.
If other units were used this constant would be different.
ah i see. so dastek where just making my figures look good by not putting all this on my graph just flywheel powers
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