Rolling road graph

[Misterdead]

Can anyone help me to understand this rolling road graph please?

It was in a folder full of receipts etc which came with my car.

Cheers.

http://i1182.photobucket.com/albums/x451/robhartin...

[andburg]

accelerating through the gears looks like 3 runs overlayed

1st with clutch slip
2nd
3rd
4th
topping out at 158ishkph in 4th (92mph)

Pen says 150bhp but scale shows ~170KW which should equate to 227bhp according to web calculators

but i could be wrong....
I'd treat it as garbage

[stevieturbo]

Looks like a primary school maths graph a kid might draw.

[FordPrefect56]

Simples. It's a collection of power runs, at least 20 that I can count, on a Bosch inertia rolling road while the engine was being set up. Culminating in 85 kW at the wheels, plus 22 kW transmission loss for 107 kW flywheel x 1.34 = 143 bhp. What on earth could anyone find complex about that, lol?