RE: Running in
David,
There is a delay on the BCM silencers so I went for one of the black boxes that they show on the adverts. That works okay and is fairly quiet but it leaks oil all over the engine compartment. I have taken it off and attempted to seal it with gasket sealer.
The 91 is the first engine I've had that actually started first flick out of the box. It's had about 30 minutes on the ground it's now ready for first flight.
Very easy to handle - I don't know what the revs are on a 13x8 but it sure shifts a lot of air.
Cheers,
Mick.