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Old 20 October 2007, 07:32 PM
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banny sti
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Default Flywheel figures

Had my car run at AET Turbo's hub dyno and it made an average of 309.5 atw (peak was 311), what would this equate to at the flywheel?

Graph attached

http://i20.tinypic.com/30xhkjl.jpg

Banny
Old 21 October 2007, 11:56 AM
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Phildodd06
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At a guess 309.5 atw could meant At The Wheels.?
Old 21 October 2007, 07:52 PM
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banny sti
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Yes it does means at the wheels but im wanting to know what that would equate to at the flywheel, if possible?

Banny
Old 21 October 2007, 08:16 PM
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fireblade37
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banny, it says torqfly 290.8 on the graph! or is that something completely different
Old 21 October 2007, 08:17 PM
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banny sti
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They do not measure anything at flywheel, as i quried the exact samething so even the torque is a the at the wheels.

Banny
Old 21 October 2007, 08:24 PM
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fireblade37
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strange, to me your graph says 290.8 torque at flywheel / power 309.5 ps
Old 21 October 2007, 08:32 PM
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Northern Nick
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I'd guess you'd lose about 15% to the hub as you normally loose about 20-25% to the wheel which is much larger than the hub.

Not 100% sure though.

Was that with the MD195 or the 20G?
Old 21 October 2007, 09:27 PM
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MazingerZ
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by having Torque at the flywheel, you can work out HP, search in google for the HP formula


I think it would be

HP= (TQ x RPM) / 5252

if your case

HP= (290.8 x 5514) / 5252

HP= 305.3

there...

Koji
Old 22 October 2007, 07:55 AM
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banny sti
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That was on the MD195 Nick, so by your calculations Koji I have less power at the flywheel than I do at wheels?

Banny
Old 22 October 2007, 09:09 AM
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wayno
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i thought when they let the car slow down on it's own they measure transmission loss to give you an idea of what you have at the flywheel
Old 22 October 2007, 09:27 AM
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banny sti
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It works out to 382 bhp at the flywheel

Banny
Old 22 October 2007, 12:44 PM
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MazingerZ
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I just read your graph that showed the value of 290 lb-ft at the flywheel...
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