stunthanger.com
Engine basics => Engine set up tips => Topic started by: Tom Blodgett on January 17, 2008, 10:24:11 AM
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I am in the process of building my Vector 40; it will be powered by an OS 40LA converted for control line use. I’m not sure if I will be using the stock muffler or a less restrictive type. My question is: I would like to use a 3-bladed prop with this combination but I’m not sure were to begin. Have any of you used a 3-bladed prop with this engine/plane combination?
Thanks,
Tom
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OK. So the first question becomes, "Why?" Because it's sexy? Because you think it will control your flight characteristics?
Then, How are you going to run your engine? High speed (Pipe style?) 2-4 break? Will it be modded by a stunt rebuilder?
All these questions, and more need to be addressed before an answer can be reliably answered. That said, I run Thunder Tigers on pipes, and Aero-Tigers both on and off. All are basically run in the higher speed ranges i.e. approx 10,000 rpm. I use Bill Lee 3 bladers, Bolly 12 X 4N 3 blades (cut down to 11 1/2), and Bolly 12 X 4 two blade (cut to 11 1/4), all depending on what works best for the engine, airplane, line length combination. I often modify my two blade props to 3.75 pitch if I need to up the rpm, and slow down the aircraft speed.
I sugest you contact our moderator for an in depth conversation regarding you needs...
Ward-o
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"I sugest you contact our moderator for an in depth conversation regarding you needs...
Ward-o"
??? ??? ??? ??? ??? ???
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" ??? ??? ??? ??? "
No reason to get excited! Randy Smith, our moderator on the Engine Basics subsection, is an expert on this stuff. I guess we "old-timers" on this site sometimes forget that what seems obvious to us isn't!