I've just come back from a visit to Burton MES and I'm on cloud 9!
My shunter worked first time, and performed exactly as I had hoped on their 3 1/2" raised track. At about 25% power it pulled me forwards up a slight gradient. It happily pulled me round at a brisk walking pace at between 50% and 100% depending on the grade. It also pulled a 15st club member around without complaint. We tried two-up for about 28 stone on the riding car – there was a fair bit of slipping due to the low adhesive weight, but once going it pulled the two of us so a 'Tich-like' performance is pretty much accurate.
More amazingly no burnt-out mosfet and no bits falling off!
Added bonus, I met Gordon Smith – the chap whose safety valve design I was emailed a couple of weeks ago!
Trouble is, I'm hooked now – how can I afford a steamy one…?
Neil