OS FS70 brushless 24V homemade generator 100W charge test

I changed some things to my previous design:
replaced the FS40 with the FS70
removed the brushed starter and tried again to use the brushless as a starter-generator. which works now.. kind of .
fuel used for these tests was regular RC fuel, methanol, 5%nitromethane and 12%oil

it can produce easily 40V+ with no load. but the tests were done at 12-18V for now.

and I finally did a rudimentary fuel consumption test:
I loaded the system at 100W until 10Wh were gone. it consumed 22g of fuel.
with some calc. i came up with a total efficiency of about 10% yay ;-)
fuel with 1000g worth of methanol should get me roughly 600Wh or 0,6kWh of energy
at low 4000rpm it produces around 100W
at 7000 I should get around 200W, though I have not tested it yet.

hope you enjoyed whatching this contraption in action :-)