Any welsh/Irish cars with a dyno sheet out there????
I'm still of the opinion that the type of manufacturer of the dyno should also be included..... it does make a big difference!
Also, sorry if my last post seemed a bit terse, didnt intend it to be that way
All is good, I'm still teaching myself a bit about this as we go and I hadn't anticipated so much interest in the thread either!Originally Posted by Gowf
With regards to the dyno machines themselves I don't mind including it but I think it would be very difficult/time consuming to do separate tables for every type. Although if someone were to get in touch with Guinness...I am trying to be as fair as I can across the board without excluding anyone just because they don't have access to a certain make/model of dyno within reasonable distance. Although we could post the make/model of the dyno with the recorded bhp figure?
How does that grab ya?
Thats cool bud, tbh, the only impartial way would be to have everyones car on the same dyno on the same day which is clearly never going to happen. So yeah an indication as to what has been used to measure the power is a step in the right direction, and probably as large a step as will ever be made.
In answer to the thread ....... the guy with the smallest penis ???
So you have 10,000 bhp then HeathIn answer to the thread ....... the guy with the smallest penis ???
Mods:Intercooler,Piping,Fuelpump,ECU,Spark Plugs and Cables,Exhaust (Cat,Downpipe,Muffler),HKS Boost Controller
My cars are always standard so you work it out JustinSo you have 10,000 bhp then Heath
German title taken! I'll post up a European title once we have a few more contenders to spice things up! Any takers?
Most of the HP figures in Russia are flywheel (BHP) numbers. Most of them seems to be made on a same DynoDynamics dyno, so it shouldn't be to hard to convert them around.
Here is a Dyno printout of my (former) VR-4, the new owners (nickname: foksha on vr-4.ru - Anastasia&Roman) finally got it on the real dyno.
The result at 1.4 bars and pump fuel is:
Last edited by valmes; 21-12-2010 at 06:12 AM.
Sorry, just to clarify, is this a flywheel or at the wheels dyno run?Most of the HP figures in Russia are flywheel (BHP) numbers. Most of them seems to be made on a same DynoDynamics dyno, so it shouldn't be to hard to convert them around.
Here is a Dyno printout of my (former) VR-4, the new owners (nickname: foksha on vr-4.ru - Anastasia&Roman) finally got it on the real dyno.
The result at 1.4 bars and pump fuel is:
That was at the wheels dyno run on a dynodynamics, but I am pretty sure the graph shows numbers for flywheel PS...
Anyone know what calculations need done to get atw figures from this then?
It appears there are more BHP/PS numbers than ATW...
It's a shame though because essentially it's a pointless figure. I'm sure I don't need to tell anyone here that the figure at the wheels is much more important as it has a practical application. Although flywheel figures do always look good and massage the ego a little!
Hmm, its all a little pointless than... since 450-500bhp (at flywheel) is that magic number... you can increase boost/fuel to get some larger HP numbers for a few times, "to massage someones ego", at the expense of the engine (and its stock internals)... as some people have seen, rods will go out first...
You can use "engine calculator" im my sig to get approximate numbers for flywheel/wheels HP. Just rise the boost...
Forgive me if I'm wrong but isn't the flywheel figure a calculated figure rather than a measured one? I thought the atw figure was put into a calculation to see what the flywheel was estimated to be? If this is the case then surely a pretty accurate figure is attainable if we reverse the exact calculation made in the first place?
Also an atw figure includes any loss due to drivetrain friction etc so it will indicate which car, even using the same engine, has the most power available to turn the wheels. IMHO this is without a doubt the most important factor. In any case if anyone wants to risk turning up the boost further than they should and pay for a dyno run just to have their name printed on this thread then they deserve everything they get!
I guess you are right... Sure, those numbers mean something and at the wheels hp must be a better one... the only problem with dynos is that they are different in each and every case. You can really get accurate measurments of cars hp (doesnt matter at flywheel or at hubs) if they are all on one dyno at the same day... otherwise it will be dependand on way to many factors (temp, boost, tune, fuel, hangover effect of "dyno guy", rpm range, gear, attitude, fan speed... etc) what I am saying is if you get "raw" - "from the wheels numbers" on different dynos, there are still a lot of things to account for, so they will float in either directions anyway(even for the same car)... thats why "dyno people" are using flywheel numbers to factor in some corrections so those numbers could be compared across the world with some degree of precision.
PS: Well, why should I care anyway... I used Apexi RSM and my gut to get almost the same results at 1.4 bars (~445ps)...
I have had a similar conversation with Gowf about more or less the same things. You are right, if this was an official competition with real prizes a 1 day event is the only way you can test this properly. Even a 1 day test can see temp/humidity changing over the course of a few hours, (especially around here!) so there will always be inconsistencies. I've started this way so I'd like continue as long as everyone doesn't boycott the thread! I still think the "at the wheels" bhp is a more appropriate figure to use as it relates to real world use better. I also hadn't realised that the the flywheel figure was used to iron out the differences, I just assumed it would add more problems! Thanks for the input, I am still always ready to learn.
455.6 PS ~ 449.4 bph ~ 361.4 whp according to my calculations...
PS:
502.0 PS ~ 495.1 bhp ~ 404.1 whp
Last edited by valmes; 22-12-2010 at 07:56 AM.
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