theeone Member 349 Member For: 22y 2d Location: Hoddles Creek (VIC) Posted 05/09/04 01:04 PM Share Posted 05/09/04 01:04 PM Looking at some of these RWKW & RWHP figures I see an additional NM figure, I was lead to belive by a Dyno manufacturer that its not possible to gain an accurate torque figure at the wheels.Anyone?? Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/ Share on other sites More sharing options...
geea Site protagonist Lifetime Members 4,320 Member For: 22y 8d Gender: Male Location: At the lights, waiting for you. Posted 05/09/04 01:50 PM Share Posted 05/09/04 01:50 PM I was told similar to this too. I believe that the chassis dyno can measure tractive force, thiscan vary greatly due to the conditions of the dyno run I believe. I think there are some equations that can translatew tractive force to nm torque. This probably give more of a guide than an exact figure.I'm no expert so hopefully someone who is can shed some light on the situation.Geea. Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161850 Share on other sites More sharing options...
Lumpen Poison Fish. Poison Fish. TASTY FISH!!! Donating Members 5,181 Member For: 22y 2m 5d Gender: Male Location: The Bogan Shire Posted 05/09/04 03:00 PM Share Posted 05/09/04 03:00 PM Isn't Nm a function of Power and Revs?So <IF you take drivetrain loss at a given percentage> and then convert your RWKW figures to an 'approxinate' Flywheel figure, you could then get an APPROXIMATE figure for torque? Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161859 Share on other sites More sharing options...
dingah2 Crusty aviator Member 846 Member For: 20y 11m 1d Gender: Male Location: ACT Posted 05/09/04 08:21 PM Share Posted 05/09/04 08:21 PM Here we go again.....Dynos have far too many variables between them to be able to provide accurate and comparible figures that can be compared between different dynos.But if you have before and after dynos of mods at taken at same site with same operator in near as possible same conditions you can see what the relative increase is. If you assume stock was say 450, apply that percentage increase and you can derive an approximation.Dingah Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161876 Share on other sites More sharing options...
Turbo6man Lifetime Members 4,084 Member For: 22y 7m 10d Gender: Male Location: South Coast NSW Posted 05/09/04 11:29 PM Share Posted 05/09/04 11:29 PM theeone said: Looking at some of these RWKW & RWHP figures I see an additional NM figure, I was lead to belive by a Dyno manufacturer that its not possible to gain an accurate torque figure at the wheels.Anyone?? Well, if a dyno manufacturer has told you this it must be true. :ladysman: Was he a politician in an earlier life?If the dyno can measure horsepower, and the dyno manufacturers say it can, then torque can be simply calculated form the formula.This has been covered so many times it is like the auto vs manual topic. I'm so bored with it I'm going back to sleep now ... someone wake me when something interesting is being discussed. Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161906 Share on other sites More sharing options...
Cobra potty trained Lifetime Members 1,938 Member For: 22y 25d Gender: Male Posted 05/09/04 11:47 PM Share Posted 05/09/04 11:47 PM maybe I'm an idiot (quiet in the back).... but I thought the dyno measured the tractive forces and used a formula to derive the rwkw :ladysman: Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161913 Share on other sites More sharing options...
Turbo6man Lifetime Members 4,084 Member For: 22y 7m 10d Gender: Male Location: South Coast NSW Posted 06/09/04 01:19 AM Share Posted 06/09/04 01:19 AM Cobra said: maybe I'm an idiot (quiet in the back).... but I thought the dyno measured the tractive forces and used a formula to derive the rwkw And maybe you're right ... but what has that to do with the Q?It doesn't matter a damn how the dyno manufacturers arrive at a power figure. The simple fact is once you have a power figure, torque is easily computed, and vice versa.In any event, from how I understand it, torque (maybe this is what you are referring to as tractive effort) is computed first, then power is calculated so what comes first the chicken or the dinosaur? Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161942 Share on other sites More sharing options...
siccar Member 235 Member For: 21y 1m 19d Gender: Male Location: Back seat...... waiting for the babes Posted 06/09/04 01:47 AM Share Posted 06/09/04 01:47 AM Turbo6man said: In any event, from how I understand it, torque (maybe this is what you are referring to as tractive effort) is computed first, then power is calculated so what comes first the chicken or the dinosaur? Who was on top? Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161955 Share on other sites More sharing options...
Guest Forum Director Guests Posted 06/09/04 02:20 AM Share Posted 06/09/04 02:20 AM Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-161975 Share on other sites More sharing options...
theeone Member 349 Member For: 22y 2d Location: Hoddles Creek (VIC) Posted 06/09/04 02:23 PM Author Share Posted 06/09/04 02:23 PM (edited) Ok then, seeing as some of you missed the point,I would like to see the car with, I think it was about 276rwkw & 750nm of torque!!!Forgive me for thinking that these two figures belong anywhere near each other.Also Turbo6man, this person I was talking to is well versed in Dyno tuning and construction of a very high profile product, I think politic's is the last thing on his mind Edited 06/09/04 02:27 PM by theeone Link to comment https://www.fordxr6turbo.com/forum/topic/12685-hang-on-a-minute/#findComment-162279 Share on other sites More sharing options...
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