Originally Posted by
bjr_93tz
Thanks for the offer Scott.
In a world of perfect clearance, all the fuel should stay in that tapered slot, then follow the deep groove around to the outlet on the other side which goes up to the injector. I figure if there's enough clearance so that fuel is happy to leak out of that slot in the direction of the red arrow only to be stopped by an o-ring (not fitted in the picture), then it would be equally happy to leak out of the slot in the direction of the green arrow into the crankcase.
I'm almost hesitant to report on this afternoon's flying session for fear of jinxing something.
The engine seemed to respond predictably to pump and needle adjustments and I put through about 2 litres of fuel across 4 flights consisting mainly of sport flying with cuban eights, humpty bumps, loops, rolls, double Immelmann's etc and it just seemed to work without any fussing and was still externally "dry". I've been burned before so I'm not declaring it "fixed" until I can't remember how much fuel I've mixed for it and I've forgotten where the needle is set.
It was good to get the Aries 07 out for a few laps today but for an airframe that was designed around a 17x13 and still worked nice on an 19x11 with a DZ170cdi, The airframe feels a bit over-propped with a DZ200cdi swinging a 21.5x10.5. Fantastic vertical though
Hi Brett,
I think it's fair to assume there is some fuel going inwards along the direction of the green arrow, but it would just end up going up the intake tube and into the cylinder. I doubt it's much and any effect it may have, would be taken care of by tuning.
Good to hear it went well today and hopefully it will continue that way.
Ground clearance does become an issue with the 2000 era planes, but that's what they make longer legs for 😁 As they say, you can never have enough power 😂