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3 bladed prop for Evolution 15cc

Old 07-01-2013, 02:56 PM
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CAPtain232
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Default 3 bladed prop for Evolution 15cc

I will be searching for a good 3 bladed prop soon. The question I have is what 3 blade prop would be about the same as a 13x6 2 blade......11x6?

Any idea on good brands?

The prop will be going on an evolution 15cc gas engine.


Thanks
Old 07-01-2013, 03:36 PM
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Pete Bergstrom
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Default RE: 3 bladed prop for Evolution 15cc

A 12-6 three blade will turn about the same but the engine will easily turn a 13-6 3 blade. 

Pete
Old 07-01-2013, 03:39 PM
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CAPtain232
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Default RE: 3 bladed prop for Evolution 15cc

Thanks Pete...

I am looking for a break-in prop first and then a prop to actually run. Reading the manual states 13x6 2 blade for break-in.....so I guess I should get a 12x6 break in and then a 13x6 3 blade to run all the time.
Old 07-01-2013, 03:46 PM
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CAPtain232
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Default RE: 3 bladed prop for Evolution 15cc

Ground clearance is the issue.....this is a .91 size engine on a .60 size trainer.....Just checking out this little gasser and if I like it, I will be moving it to a .60 size extra 300
Old 07-01-2013, 04:29 PM
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Default RE: 3 bladed prop for Evolution 15cc

you need to up the pitch anyway.

The engine only turn a 113x6 prop around 10,500 that is only good for around 70 mph in most sport planes. I would go with a 11x10 3 blade prop which will be = to a 12x8 two blade prop
Old 07-01-2013, 05:15 PM
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Default RE: 3 bladed prop for Evolution 15cc

Use the 13X6 2-blade for break-in and follow the break-in procedures. After that then you can switch to a heavier prop.

• Propeller 13 x 6 (EVO13060) for break-in;
14 x 6 (EVO14060) for normal flight

Old 07-03-2013, 07:06 PM
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CAPtain232
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Default RE: 3 bladed prop for Evolution 15cc

• Propeller 13 x 6 (EVO13060) for break-in;
14 x 6 (EVO14060) for normal flight


I saw this info in the manual, but again the issue is ground clearance
Old 07-12-2014, 04:52 PM
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Flew the 15cc first time today.. Went well..Experimented a little on pitts muffler i have on it.Pinched pipe on pressure tap side on muffler to get more muffler pressure.Seems to help a lot.Noticed same thing on 10cc with pitts.Went back to factory muffler on 10cc.But I think I'm able to use the pitts on 15cc cause factory muffler is just to big.Still breaking in engine,but from experience from 10cc its going well.Using 13 x 6 at the moment on hanger 9 katana 50.Think the engine is gonna be a pefect size for it.Weight 7.5 to 8 lbs..Just a guess cause i weighed it with the 10cc engine on first build.It was 7 to 7.5 range.May go back tomorrow and fly some more and see how it does cause I really tested with pipe not pinched most of the flights today.Think I'm gonna leave it pinched cause it seems to like it best.
Old 07-13-2014, 04:03 AM
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pinched pipe is about 75% open.i squeezed it and its rectangle shape at the end.one other note i noticed with 15cc.putting about half tank of fuel on each flight,the engine takes the fuel so much better.i noticed this with 10cc.i think its gonna be a great engine after broken in.at the moment i' using semi-synthetic oil.

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