Reading a dyno chart??

[.::F[L]Y::.]

hi guys,

In light of my for sale thread i have been advised by member 'String' that my claims are incorrect. I have posted up a dyno chart for those to see and that im not hiding anything. Not sure if im missing anything but clearly the chart shows max output of power and torque??

can someone shed some light on this.

[aaronng]

The torque figure is at the wheels after going through your gearbox. Plus, the dyno is against road speed. So you can claim for power at the wheels, but you can't claim the torque. Could you ask for your dyno operator to plug in your gear ratio so that you can get a proper torque figure?

[Mr_will]

this is the same thing i was trying to point out to you.

i was a genuinely interested party before you fobbed me off, just because i wanted to question your claims.

do you see NM anywhere on that chart? i was asking you about TORQUE not power, which is why i wanted to see a dyno sheet with TORQUE on it.

[sivic]

yeah the ratios are put in you cant claim specific torque figures. obviously you can use the readout to examine the shape of the torque curve etc etc..
basically what a readout should be used for anyway

[fatboyz39]

You need torque to make power. Enuff said.

[aaronng]

You need torque to make power. Enuff said.

Yeah. If Fly can provide us with RPM numbers for the chart, we can just convert the power number to torque.

[.::F[L]Y::.]

You need torque to make power. Enuff said.

elaborate on that fatboy

[aaronng]

elaborate on that fatboy

Power (hp) = RPM x Torque (lb.ft)/5252

[STOCK]

Dyno print out looks normal to me for a built motor.
Maybe those questioning the graph should spend 25cents and ring up Adrian and ask about the figures, thats if they are genuinly interested.

[CUL8R]

the right hand axis only shows a figure in newtons, this is a force not a torque
a torque is a force x lever arm giving newton meters.

so the right hang axis isnt giving a torque reading.

and yes the horizontal axis would be good to have rpm readouts.

was this run on a hub dyno or roller dyno?

[destrukshn]

more likely a roller.

[CUL8R]

i just read his FS thread and yeah didnt realise the mods extent...doesnt look like too bad a figure