How many horses do you think I will have PART II

[strange_days_uk]

I have to swap out my clutch, then will defo get it dynoed soon although I have a horrid idea that rebuild time is looming !!

[John Yorke]

not the first time ive heard that. They use a dynodynamics unit and they are far better IMO than inertia dynos

whilst grip is less of a problem, the dual roller does affect horsepower figures.
There are pros and cons of each design. Hub dynos may even be seen as more accurate.

i still wouldnt trust the flywheel horsepower figures though....

Heard this soooo many times, compleat bollox to be frank, I was at the Thor dyno day yesterday and brought with me my last dyno graph from REworx and guess what..............both were almost identical, within .2hp at the flywheel.

[Oedipus Rex]

I reckon a dynapack will give you quite different figures.

[dubber91]

Heard this soooo many times, compleat bollox to be frank, I was at the Thor dyno day yesterday and brought with me my last dyno graph from REworx and guess what..............both were almost identical, within .2hp at the flywheel.

perhaps you were lucky, and ran on similar conditions.

I run a dyno dynamics dyno daily and regularly see around 3BHP difference from DAY TO DAY on a car i mapped and run every day. On this particular car thats a 3% variation from day to day. On a 300HP FD thats 10HP fluctuation daily.
Not that it matters: Im happy if the AFRs remain consistent and the graphs are the same shape.
There is nothing wrong with working with a dyno back-to -back like this, its when you start running your vehicle on several differnt dynos that you will experience major fluctuation