ORIGINAL: 1705493-AndyW
Colin,
Ether may go the way of the Dodo if the runs on my own PAW are any indication. We may not even need ether in the prime. But you're right, throttling can be an issue on pure kero. More to come.
Andy,
What was the fuel mix, and what was the starting like? Any special starter mixture, or an electric starter?
Ok, this has me fired up to try a fuel with say 25% castor, 1% redex, 1% DII and the rest automotive diesel fuel. Maybe make some priming fluid with john deere starter, or even just acetone. (This will just be bench running, I don't have a plane for the PAW yet, having just re-started control-line after a 20 year absence. I'm building my first planes in 20 years at present, but using glows, a Cox .049 in a 1/2A 'Stunt Chimp' and an OS MAX-III .15 in a Brodak JR Flite Streak respectively.)
I have a feeling the PAW 19 may run and start better on this than the MARZ 2.5s and the PAW 80 (.049). (My MARZes and the little PAW aren't broken in yet - the 19 is relatively high hours and was always a two flick starter even on 10% ether).
One additional data point: my flying buddy in the old days ran a PAW 249DS. I seem to remember it was a bit cranky starting on the 10% fuel I made up, but he tended to run a small prop at high revs where I had a 9x6 or even a 9.5x6 on my .19.
By the way - I'm so glad I found this forum (pointed out to me by someone on
www.clstunt.com ). Great to find plenty of other 'oily hands' out there.