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Author Topic: Proper profile propellor picking procedure  (Read 1765 times)

Offline Tim Wescott

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Proper profile propellor picking procedure
« on: April 05, 2016, 08:29:47 PM »
NW Sport Profile, Ringmaster S-1.

I'm anticipating that it'll weigh 40 ounces or so.

OS 40FP

Suggested prop?  I know that I don't want a stunt-weenie low-pitch thing -- but what do I want?  10-6?  9-8?  This is going to be my first carrier contest and I'm less interested in maximum points and more interested in survival and fun, in that order, so something that lends itself to easy engine handling would probably be more fun than something that an expert could use to win the event.
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The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Mark Scarborough

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Re: Proper profile propellor picking procedure
« Reply #1 on: April 05, 2016, 08:55:46 PM »
get ahold of Ken Burdik, hes a local guy and probably has some good info
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For years the rat race had me going around in circles, Now I do it for fun!
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Offline Tim Wescott

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Re: Proper profile propellor picking procedure
« Reply #2 on: April 05, 2016, 09:25:17 PM »
He's been responding to some of my other questions -- very helpful fellow.

I decided to do a quick web search on prop selection for the engine, and got the OS instruction manual, which lists prop selections for break-in and for "training and sport" but not, oddly enough, for control line carrier competition.
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AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Russell Shaffer

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Re: Proper profile propellor picking procedure
« Reply #3 on: April 05, 2016, 10:19:45 PM »
APC 9X6 as per Eric Conley.
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Russell Shaffer
Klamath Falls, Oregon
Just North of the California border

Offline Tim Wescott

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Re: Proper profile propellor picking procedure
« Reply #4 on: April 05, 2016, 10:36:11 PM »
Thanks Russel.  I'll get me a bunch of them -- I've been told that if you don't break a prop on every landing, you're not doing it right!
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AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Mark Scarborough

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Re: Proper profile propellor picking procedure
« Reply #5 on: April 06, 2016, 08:19:27 AM »
Hey Tim, I have a bunch of 9x6 APC props, its what we use in 424 Pylon,, I mean a BUNCH ,, now that said, they seem to all have about 1/8 off the tips,, something about buzzing the prop on take off, seems to be a tradition in pylon,, that said, I cant use them to race with but I cant throw them away,, if ya want them I can bring them to Portland,,
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Offline Ken Burdick

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Re: Proper profile propellor picking procedure
« Reply #6 on: April 06, 2016, 09:54:37 AM »
Tim.
A good ide is to read Eric's good articles on sport 40 as shown in Flying Lines. LOTS of good info there and should cover about all the questions you might have. Eric fiddled with several props and yes, the 9 x 6 is a good one for this set up.

Be sure to pick up a few idle bar glowplugs......makes a nice difference.

See ya on sunday in Po-Land

ken
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Offline Tim Wescott

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Re: Proper profile propellor picking procedure
« Reply #7 on: April 06, 2016, 10:38:52 AM »
Ken:  Yes, thanks, somehow I missed the list of his columns.  I need to stop by the LHS to see if they have props -- if they do, I'll get plugs there as well.  Should I get hot plugs?

Mark: Yes, please.  I'll bring a couple at any rate, but mo is mo-better. 

My shoulder is off-and-on better, but I'm not going to pick up a handle in my right hand until it's all better -- I'd rather miss out on a few month's flying now than do some weirdo permanent damage.
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AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Ken Burdick

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Re: Proper profile propellor picking procedure
« Reply #8 on: April 06, 2016, 12:31:21 PM »
You can find the articles in F-L under the carrier section. They have all of the articles archived there.
Yah, get a Fox Idle bar hot if you can...Fox seems to work well.

 
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