I have now ran my new .15 XLS some, and as usual trying to get the most out of it
Bone stock it turns APC 7-6 at 15600 rpm (0.34 hp).
After removing one headshim and some dremelling work on the sleeve and fitting a pipe from a boat (Miss Vegas) it now turns the same prop 18300 rpm and puts out 0.55 hp, which is more than advertised.
These results was with some old left over fuel and I suspect fresh fuel will improve it further. Tomorrow I will try some high nitro fuel to see what happends then[8D] I have a gallon of Rapicon 45/20 boat fuel
The engine idle and throttles great and will propably get its maiden flight tomorrow in my new Fashination .15