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english bhp

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RSman4ever
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2011/01/30 19:28:24 (permalink)
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english bhp

hi can anybody convert english bhp power ratings to kwt's for me please thank you
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    Phil
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    RE: english bhp 2011/01/30 19:48:35 (permalink)
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    Divide the bhp figure by 1.34. Bear in mind the english typically talk in flywheel bhp so to get rear wheel kw you need to divide by a further 1.18
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    Phil
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    RE: english bhp 2011/01/30 19:52:11 (permalink)
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    e.g. 204bhp / 1.34 = 152kw

    152kw at the flywheel / 1.18(18% driveline loss approximation) = 129kw at the tyres
    #3

    Mickas
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    RE: english bhp 2011/01/30 21:45:16 (permalink)
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    Can you just mae up a little program for us
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    RSman4ever
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    RE: english bhp 2011/01/31 08:14:16 (permalink)
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    thank you very much
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    Noono
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    RE: english bhp 2011/04/18 08:02:20 (permalink)
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    quote:
    Originally posted by Phil

    e.g. 204bhp / 1.34 = 152kw

    152kw at the flywheel / 1.18(18% driveline loss approximation) = 129kw at the tyres


    That maths is not quite right. Assuming 18% loss

    RW kW = 152 x (100-18)/100 = 124.6 kW

    Cheers Gregg
    #6

    blackmk1cossie
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    RE: english bhp 2011/04/18 16:55:26 (permalink)
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    years ago we did a dyno run on a twin weber 2.0ltr. on the engine dyno it made 201 hp and when put on their chassis dyno made 104 kw at the rear wheels. a 300kw commodore only makes 280kw according o official Holden source and when put on chassis dyno makes 218kw atw. a mates 2.4 holbay was on the dyno 2 weeks ago in a mk1 made 128kw arw motec also engine dynod this engine at 241hp flywheel.
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    fehlbie
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    RE: english bhp 2011/04/18 18:22:58 (permalink)
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    It is only really a very rough guide. wheel KW's to flywheel has so many variants it is impossible to calculate accurately.
    Eg auto or manual, driveshaft weight, tyre pressures, tyre diameter etc, etc..
    #8
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