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DannyW wrote:cool! i've seen the printouts that their RR produces and it certainly looks good enough for what we want, although he didn't seem to know how the Flywheel HP figure was calculated when i quizzed him about it, either way i'm not too bothered to be honest.
Any more ideas on a possible date?
(are you all coming?!!!)
mr2mk1chick wrote:
DannyW wrote:mr2mk1chick wrote:
Yes, myself, Dangerous Dave and my other half will be convoying down in our own little 3 car line-up
tho'ryan_s3 wrote:I'll come if it's nobles definetly and could bring others if numbers are needed.Never heard of street-racers?Stick to tried and trusted i say.
By the way i'd be bringing my 350bhp audi s3.
didn't particularly like the figures seen at Nobles last time, what with their guestimate flywheel power calculation. Rather get power figures at the wheels like Streetracers can do.jonno wrote:
We have used Nobles in the past for a
If they guestimate flywheel bhp, what kind of percentage losses are they talking?Icsunonove wrote:jonno wrote:
We have used Nobles in the past for a
In Chesterfield?
they don't use a percentage loss and they don't give at the wheels figures that's why i would rather try somewhere different, and also they are quite expensive."coast down" is nonsense. It doesn't work. Please believe me 'cos my final year project was involved with this. The only reliable figure is rwhp. -20 % losses are feasible for a 2 wheel drive transverse gearbox.](./images/smilies/eusa_wall.gif "Brick wall"){kind=small}
Icsunonove wrote:You're not wrong there!
14
20% is just about feasible if your gearbox and final drive is really knackered!
Anything over that is pure nonsense!
I've seen loads of places quoting 30% losses! It's utter nonsense but it appears loads of people believe it!
- i would be very interested if im not working!
If not I won't. 
% guess. Anyone with a GCSE in physics ought to figure out that straight % loss calculations are a waste of time. From what I can gather the coast down losses offer an empiracle alternative which seems to be pretty acurate. Conversely working with wheel figures only, seems to provide a huge variation in power figures for the same car, on the same day as things like the tyres, and transmission warm up for example. Even though the engine is still making the same, or usually less power on each succesive run. Its your money, its your choice... 
http://www.dynamometer.fsnet.co.uk/powe ... el-BHP.htm http://www.pumaracing.co.uk/coastdwn.htm I like it! 
(rwhp) are you running now?( Sorry Jo, I've hi-jacked your thread! - will get back on topic soon)