Rustle
Whilst I concede that (kinetic energy) would be additional if our intrepid pilot decided to leave full power on whilst aborting
I wasn't thinking of such a horror scenario
Just uncertain about how well SEP brakes deal with the non linear nature of kinetic energy in extreme cases.
As I said I had no problem stopping from 50kias (1 above VS1) on a 700m runway, dry grass, very slight downslope, with a PA28 that was ready to start flying.
So does this illustrate that you need less space to brake than accelerate? (Okay, in this aircraft, under these conditions)
Absolutely and I would accept that the aircraft could stop under different conditions with the appropriate factors being applied to the distances you quote.
My problem was with the original statement "I'm just guaranteeing that you will be able to stop", which I don't think can be true as an absolute assertion.
The lack of accelerate/stop performance tables for SEPs does leave a bit of uncertainty in my opinion though, because what do you apply safety factors to? Say short wet grass, 2% downslope, no headwind, ISA +15.... I can calculate the TORA and distance to 50' and apply the CAA safety factors, but have to hope for the best that I could stop in the event of a rejection being needed.