Somebody had a nitro dyno at the Chicago Hobby Show a couple of years back but I don't remember who it was.
One drawback with the PSE dyno was the amount of force you put on the back of the car. If you pushed down to hard I thought the numbers would be different than just holding it down enough to keep it steady on the platform. But, I could be completely wrong because I did not use one but that is the perception from just looking at it.
I am no engine expert but I would look at how the full size dyno's work and try to duplicate it as much as possible.
There is great need for a sarcasm font.
You never know when it will strike, but there comes a moment at work when you know that you just aren't going to do anything productive for the rest of the day.
Sometimes I post just to look at my avatar.