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Engine basics => Engine set up tips => Topic started by: line stunter on July 26, 2006, 04:14:41 AM
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hi everyone have fitted a paw 29 ds into a brodak me 109, any one know what size prop to use. i am thinking around a 10x6 for starting out. any body out there used one for stunt and what there set up was. thanks damien n~
ps randy i recived my order of two tube mufflers for st 60s and are very happy with them thanks.
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Damien,
The 29DS is a plain bearing engine, right? I suggest following the manufacturer recommendations for fuel, prop and break-in before flying it.
A 10-6 might do well on a fully broken-in 29DS, but I expect the instructions list a 10-6 as at the small end of the recommended props range. Larger props won't hurt it. They even have an advantge that they run on lower compression and richer needle settings - easier on the engine.
Luck!
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Perhaps you should also know that Eric Clutton (aka Dr. Diesel) does not consider the .29 DS one of PAW's "stellar performers". I was disappointed to hear this, as I have two NIB! Sigh . . .
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hi lou and wenzel thanks for replys, ran it in on a 11x5 on a 30 % oil mix and it feels quite free now,gave it a few flights today with a 10x6 prop on 60 ft lines and it seemed to have a good lap speed and fly full patten ok for me , not that i fly it that good. . does seem to start easily, no nasty prop bitting as happens with smaller new diesels .does nice loops at constant speed with no speeding up on down ward leg, engine run should get better as i get use to turning it,so far so good i like it. **) cheers damien
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Hello:
I have used diesels for a long time, allways prefer 6" to 5", don´t worry about speed up in the wind, diesels are diferent (and smelt different too %^). Probably with a 6" pitch prop you can use 63 ft. lines, and mantain same lap time.
Hope it helps.
PS: just for the record my little PAW 15 turns a 9x6 effortlessly.