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Author Topic: RR day at Awesome on 19/11/11  (Read 8321 times)

Offline MAT ED30

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Re: RR day at Awesome on 19/11/11
« Reply #30 on: November 19, 2011, 04:45:51 pm »
I don't get why he just does not say what he has done outright  :confused:

Mods yes but way too many to stick in this little box

Offline edd666999

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Re: RR day at Awesome on 19/11/11
« Reply #31 on: November 19, 2011, 04:50:17 pm »
I was there in the morning hurdy admiring the polo, I turned up in a c1 to get some more bits to fit the boost gauge.

Offline Hurdy

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Re: RR day at Awesome on 19/11/11
« Reply #32 on: November 19, 2011, 04:53:37 pm »
I was there in the morning hurdy admiring the polo, I turned up in a c1 to get some more bits to fit the boost gauge.

Ah, you should have come over and said hello :happy2:  I had to leave early for work. I was up at 06.30am cleaning the car too. :ashamed:
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Offline tony_danza

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Re: RR day at Awesome on 19/11/11
« Reply #33 on: November 19, 2011, 07:59:09 pm »
Torque does seem on the p***, mine's stock and although HP was bang on, it gained 50lbs foot to make 350.

I think they've been having problems with it, as for ages it was spot on.
Sideways yo!

Offline Andy

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Re: RR day at Awesome on 19/11/11
« Reply #34 on: November 19, 2011, 08:02:27 pm »
copied this of Patchs thread on ukmiv forum
Taken off scn 10 days ago,after they questioned the results.

 


"After this topic of the our rollers giving high torque figures, Jim has had the rollers in pieces today and checked everything out adjusted the brakes and re-calibrated the rollers..

Everything all checked out fine and the computer shows the calculation for the torque and bhp readings being the same as before,

We ran a standard TT 225 Before the overhaul and after. Giving readings of 224 bhp and 227 lb ft

Cant say we having listened to you guys . we want to run the day so people are happy and give good honest read outs from the dyno."
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Offline Hurdy

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Re: RR day at Awesome on 19/11/11
« Reply #35 on: November 19, 2011, 08:07:20 pm »
^^^^^who knows then?????Maybe everyone elses reads low :laugh:
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Offline Andy

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Re: RR day at Awesome on 19/11/11
« Reply #36 on: November 19, 2011, 08:08:38 pm »
 :grin:

Offline Tfsi_Mike

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Re: RR day at Awesome on 19/11/11
« Reply #37 on: November 19, 2011, 08:22:42 pm »
^^^^^who knows then?????Maybe everyone elses reads low :laugh:


Offline rich83

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Re: RR day at Awesome on 19/11/11
« Reply #38 on: November 19, 2011, 11:59:06 pm »
Some 1.8Ts making 350+ftlbs of torque. I don't know much (ok, anything) but bare in mind that a stage 2+ Ed30 with do about 350ftlbs... doesn't take a scientist to work out theres "trouble at'mill"  :signLOL:

Offline heavyd

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Re: RR day at Awesome on 19/11/11
« Reply #39 on: November 23, 2011, 10:15:52 pm »
I managed to make 300lbft of torque with my 1.8T with 227bhp at awesome :surprised:

Offline PDT

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Re: RR day at Awesome on 19/11/11
« Reply #40 on: November 24, 2011, 08:38:51 pm »
You can check torque vs hp easily, remember that torque is what the dyno measures, hp is calculated by the dyno its not an actual factor that is measured. Heres some info:



http://www.howstuffworks.com/question622.htm


So if you take your bhp and torque readings at a given rpm (5252rpm) you can compare your hp and ft/lb and see if they match up.

I was working on a dyno that was throwing up big torque figures once, remembering that the 3 main factors are the power of the car, the acceleration rate of the car against the given load applied by the dyno and the engine RPM, we looked at RPM. Instead of using the cars clocks as an rpm guide we used a feed from the injectors onto an oscilloscope and then fed this into the dyno divided by 4 (4stroke, 4cyl engine) and realised that the rpm input we gave the dyno from the clocks was 370rpm out at 3500 rpm under load. This skewed the calculations and gave us 18% more torque, but no extra peak rpm.

Dynos are a lot more than a rolling barrell, theres lots more than meets the eye. A simple problem with the rpm calculation can make big differences in figures. Any form of hub or chassis (drive on) Dynos are not ideal for power measurement due to the factors that can affect figures, but as a software development and 'difference' tester they are invaluable  to a tuner.

What makes me laugh is that one day its claimed dyno X reads low, then a week later on another forum it reads high, some dynos read loads lower than most others and some people class this one as being the most accurate, then other people only use dynos that give massively higher figures to massage their own ego's.

If you want a true power figure, use an engine dyno :) if you want a guestimate flywheel figure then use a chassis/hub dyno. If you want something realistic ask your dyno operator for @the wheels numbers, thats the only true measurement the dyno actually reads.

Offline PDT

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Re: RR day at Awesome on 19/11/11
« Reply #41 on: November 24, 2011, 08:43:28 pm »
So if you multiply torque (in pound-feet) by engine speed (in RPM) and divide the product by 5,252 this gives you your bhp at the given rpm.

Offline JackG

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Re: RR day at Awesome on 19/11/11
« Reply #42 on: November 26, 2011, 11:35:08 pm »
dave....I'll ask NASA if they need any new rocket scientists  :signLOL:

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Offline PDT

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Re: RR day at Awesome on 19/11/11
« Reply #43 on: December 03, 2011, 09:30:12 am »
Thanks, but I dont like heights.

Offline Hurdy

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Re: RR day at Awesome on 19/11/11
« Reply #44 on: December 03, 2011, 05:45:39 pm »
If you want something realistic ask your dyno operator for @the wheels numbers, thats the only true measurement the dyno actually reads.

That was still high as mine got 212whp with a stock intake  :driver: yet only made 225bhp  :confused:

Then at Statllers made 200whp after having the intake fitted, which gave me another 15.5bhp on Statllers rollers.
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