StrikerChris
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| posted on 24/4/10 at 07:36 AM |
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rolling road results,can anyone do sums?!
put it on the rollers yesterday for the first time and i'm pretty chuffed. It made 192 horses at the wheels and 356 torques.
2 questions for anyone who listened in school:
1.The guy said add atleast 18% to get the flywheel figure,
2. weighs 605kg's(ok bec crowd its fat!)how do you work out power to weight?
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NigeEss
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| posted on 24/4/10 at 07:44 AM |
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192x1.18= 226bhp at flywheel.
(226/650)x1000=347 bhp per tonne.
IIRC but it's been many years since I left school 
[Edited on 24/4/10 by NigeEss]
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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big_wasa
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| posted on 24/4/10 at 07:46 AM |
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I make that 346 bhp/ton if you add your transmission losses.
But I have just got up 
[Edited on 24/4/10 by big_wasa]
I rounded mine down
[Edited on 24/4/10 by big_wasa]
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MikeLR
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| posted on 24/4/10 at 07:49 AM |
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Where did you get it done ?
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StrikerChris
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| posted on 24/4/10 at 07:49 AM |
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thanks fella's.
I'm not good at numbers!
Chris
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StrikerChris
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| posted on 24/4/10 at 07:56 AM |
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ab in sandycroft.there was a yellow tiger there that he'd been doing a new head on,think it was a pinto,and when i got there there was a 1.9 205
on the machine which made 82 at the wheels so i'm guessing it wasn't a dream machine rr. 
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NigeEss
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| posted on 24/4/10 at 08:02 AM |
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Ooh.. I used 650 kg not 605 so it's actually
227bhp (rounded up)
and 374 per tonne.
And 420 flywheel torques, 694/tonne.
[Edited on 24/4/10 by NigeEss]
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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big_wasa
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| posted on 24/4/10 at 08:05 AM |
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Shows I didnt read it properly either
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MikeRJ
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| posted on 24/4/10 at 09:33 AM |
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quote:
Originally posted by NigeEss
And 420 flywheel torques
You can't estimate flywheel torque without knowing the gearing!
Also using a fixed percentage for transmission loss is going to be very inaccurate.
[Edited on 24/4/10 by MikeRJ]
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b16mts
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| posted on 24/4/10 at 01:16 PM |
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That's my tiger!!!!!!!
How's it going?? I feel like it's a close relative gone in for surgery!!
who says you can't drive a kit car when you're 6'5"?
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bimbleuk
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| posted on 24/4/10 at 06:36 PM |
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Hi,
I don't know your exact setup but my first gut instinct to 356 lbs ft with only 192 WHP was that maybe that torque figure was actually in newton
meters? Just that's the sort of result you might get from a V8 or a diesel.
Just interested that's all as that a big glob of torque to put down in a light kit car! Any chance of a dyno plot scan?
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MikeLR
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| posted on 24/4/10 at 06:59 PM |
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Might that torque be down to the turbo ?
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bimbleuk
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| posted on 24/4/10 at 07:54 PM |
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I saw the turbo part but double the torque is quite a difference.
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