On the test bench: GSF donation motor “20PS +” part 2
The trains were assembled quickly and we are looking forward to the first runs! The engine came to us with thrown jets: without a needle, with a 50 secondary jet and a 150 main jet. The needles in particular are the sticking point when it comes to tuning. It is often quite difficult to pick the supposedly right one from a seemingly endless range of carburettor manufacturers […]
