Mi16 Rolling Road Results

[hcmini1989 16]

I suspect mistake somewhere.

 

Not the best picture but I owned this car before and had it on a RR.

 

yes mate i reckon your right i did orginaly ask what peoples thoughts on it were and just got aload of smart remarks .I`ll post the graph up ive spoke to another bloke up the road from where i work hes going to through it on a his rollers and do a power run.

 

funds are abit tight at the minute so im in no rush

[hcmini1989 16]

 

Theres the results not the best quality pic`s

[Batfink 201]

what gearbox is fitted?

[nick 3]

Those graphs just look wrong..... I reckon he has got the scaling wrong on the pc or something.

 

Power and torque crossing at about 7,300rpm.... they should always cross at 5252rpm (IIRC) also the hp curve is still heading off the page at 7,500rpm, so loads more to come with the looks of it.

 

I honestly can't believe that the operator didn't think something was amiss.... i reckon my missus could spot an error in those graphs!!

 

Nick

[hcmini1989 16]

Those graphs just look wrong..... I reckon he has got the scaling wrong on the pc or something.

 

Power and torque crossing at about 7,300rpm.... they should always cross at 5252rpm (IIRC) also the hp curve is still heading off the page at 7,500rpm, so loads more to come with the looks of it.

 

I honestly can't believe that the operator didn't think something was amiss.... i reckon my missus could spot an error in those graphs!!

 

Nick

He only went up to 6300 rpm .edit are you looking at the bottom it says mph next to it .But would make sense about the scaling

 

its running a be4 gearbox from a citroen van i dont know ratios of it as i cant find any info on it .And im to lazy to be taking the box off to count the teeth

Edited May 27, 2010 by hcmini1989

[Longun 1]

Power and torque crossing at about 7,300rpm.... they should always cross at 5252rpm (IIRC)

 

Yep thats how I always understood it as well.

[welshpug 1,657]

that would only apply if both the scaling was the same for both.

[Cameron 16]

Why should they always cross at 5252rpm?

[hexhamstu 9]

Why should they always cross at 5252rpm?

 

power bhp = (rpm x torque) / 5252

[welshpug 1,657]

torque is power, power is torque

 

 

[unariciflocos 49 1 Cars]

An engine produces torque, that's a physical quantity, and explained very crudely it represents the force of rotation. Horsepower is derived from torque and rpm and is an artificial unit, not recognized in the International System of Units.

Edited May 28, 2010 by unariciflocos

[kyepan 291]

why torque always crosses power at that point

[hcmini1989 16]

well if it does cross at that then the guy is full of sh*t at the rolling road because on that graph would be crossing at about 6000rpm

[DrSarty 90 1 Cars]

well if it does cross at that then the guy is full of sh*t at the rolling road because on that graph would be crossing at about 6000rpm

 

 

That's what we said.

 

The 5,252 figure only applies to BHP against RPM where the torque unit is given in lb/ft (pound feet). It will cross at a different point using metric (Nm - Newton metre) units. It is purely a conversion factor, and as stated, BHP is a function of torque.

 

Your 300+ lbft of torque which started this off is the nonsense figure.

[Cameron 16]

Riiiight.. I always use the SI method of calculating power, probably cos I'm not an old fogie.

[Kitch 4]

322lb ft will be torque at the wheels, not corrected flywheel torque. Torque at the wheels is always much higher as the gearbox effectively multiplies it. That's around 130-140lb ft corrected if my maths are right.

 

Apologies for thread resurrection - I dyno'd my BX at work the other day and was looking for comparisions!

Edited March 23, 2012 by Kitch