My Dyno Chart

[AzZaMaTaZ]

any input is appreciated

Edited 21/06/06 01:10 AM by AzZaMaTaZ

[quigebo]

any input is appreciated

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never quite seen a dyno sheet like that..

wots the go?

[Scruffman]

So that's Toraue and Killowatts Displayed versus Speed of car.

Nice big kick of torque at the start to get the tyres frying

The big question is how does it feel to drive. Most people would say that its not the KW's that you feel its the torque so I am more interested in the torque figures than the Peak KW figures as some of the charts you see have small peaks of maximum HP anyways.

On yours the torque seems to drop off fairly slowly so it would feel very nice to drive me thinks

Oh well im no expert at all jsut my observations.

Wayne

[GOLDIE]

Looks like a nick tune heaps of low down torque too fry the tyres.

Ian

[Chooka]

Yep, looks like a dynowog tune

Should be awesome to drive!

Chooka

[quigebo]

So that's Toraue and Killowatts Displayed versus Speed of car.

yeah I got that mate but wheres the take-off from the dyno ramp point?

wot gear are they normally done in for manual and auto 6 speeds?

and wot was done from before to after?

im a newby with fords but have had my previous car dyno'd too many times to remember.. sponsor for dyno dynamics almost?

Nice big kick of torque at the start to get the tyres frying

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and is 600Nm the wheel figure torque calculated? or the dyno's tractive effort?

sorry but never seen dyno printouts likem from rolling or hub dyno's

Edited 21/06/06 03:05 AM by quigebo

[DAWSEY]

hmmm... wog tune...

start investing in tyre company shares!

[Scruffman]

The Dyno tunes that I have seen in the Auto where done in Third gear if that's of any use to you. The SSS in his is the sign of an Auto.

Scruff

[Lawsy]

His torque converter just got owned... Well done

[replicant]

Lies, damn lies, statistics and dyno sheets...

Dyno sheets are often used for comparison purposes but there are too many independent variables (things that can change results) such as barometric pressure, altitude, ambient temperature, fuel, tune etc that make any comparison between two different cars on two different dynos on two different days impossible to draw conclusions from...

In the case of these two dyno runs, they appear to be split by an hour so the comparison between the two tunes shows that one tune is superior.

Unfortunately, unless the dyno was calibrated reasonably recently and taking into account things like those independent variables it's hard to compare this against another dyno unless you have a control. No slight just the way these things work... I've always been very sceptical about dynos... I find it hard to believe that you use up so many kilowatts in the drivetrain... if I had say a 30% drive line loss on a powerful car using up about 1/3 of its power (eg 1/3 of say 240 kw) then I'm at a loss to know where 80kW disappears to... because that's a lot of heat energy to lose somewhere - you could heat about half dozen hot tubs with that amount of friction. (Or makes me wonder why car makers spend so much time making the cars aerodynamic and nothing on reducing all of this frictional loss!)

The real world thing that makes dyno readings (whether engine or on a rolling road), something I take with a grain of salt is that neither actually replicate driving down a road. On an engine dyno you rarely have the entire exhaust and accessory drives and on a rolling road you don't have the effect of aero effect from either RAM or from weird airflow (such as vorticies) that you don't get on a rolling road.

Always believed that you should get 0-100 km/h, 50-100, 80-120 and 65-110 splits or something similar in a variety of gears to look at how the cars flexibility and torque manifests itself in the real world.