Here's a basic question that'll probably get slew of different opinions.I have an ultrastick 40,with a Evo .46 on it.I'm currently using a 10 x 6 prop,is there a big diffence between,wood,plastic, or any other type of prop and what would be best for my application.

first off, you are spinning too small of a prop, use atleast an 11x6, Master Airscrew are strong, but arent as are louder, and produce less thrust. Then there is good old wood props, They produce more thrust, arent as loud, relitivly durible and are cheap. Finnaly, we come to APC, which are the best of props today, they are light, durable, and efficiant, but they cost more. I use 11x6 wood props on my OS .46 AX and they have served me well

Sort of like asking the question: "I have a Evo46, what plane should I get...?"

There are so many types of flying you can do with that plane and each style will have a different "best" prop.

I think for sure you can change to an 11x6 APC prop and get a ton more oomph with little change in engine load. APC's in my experience are size-for-size more powerful than Master-airscrew props, but are also sharper, and more fragile (I can;t tell you how many times I've give myself "paper" cuts on those props...).

So, anything from a 10x8 for speed, 11x6 for all round performance, and 12x4 for low-speed power.

gus

I have been using APC 11x6 props on my LA46 and 46FX And I liked
it.. Then I switched the 46FX to a APC 12.25x3.75 and I love it now:-)
I did try the APC 10x6 once...

yeah... i tend to agree that the 10x6 is too little prop. I'd get a 11x6 APC. APC is not the prettiest prop but they are helluva efficient. Get 12x4 only if you really want to attempt some 3D stuff.

As noted, the prop selection used for any engine/aircraft combination will vary depending on the type of aircraft and desired flight performance. There is a balance between keeping the engine in a'happy' operating range, and providing for aircraft performance.

The ultrastick needs airflow... not necessarily designed for speed.

The Evo 46 perfers to run in the 12K - 14K rpm range.

The 11x6 would be a good choice for general use.

However, I would personally use (second the recommendations for) the 12x4 or 12.25x3.75 APC for your particular application. Either prop will let the engine unload a bit, and each creates a better airflow distribution across the wing/tail surfaces at slow speeds.

If you tend to break a lot of props then get a Master Airscrew. They are quite tough and can usually divet out grass without breaking. I hate wood props because they are more expensive here and the slightest touch against anything will instantly break the prop. APC props are not quite as tough as the MAS but they are pretty close. They are also more efficient because they are stiffer and don't flex. The best prop choice will depend on what plane its going on. For my planes I found that a 11-5 prop either MAS or APC works really well. It lets the engine rev up well and a bit quicker than the 11-6 and gives me good speed and the bit lower pitch gives me lots of climb. [8D]

thanks for all the input,I think I'll give the APC 11*6 a shot.

I used to run an 11X5 on my TT46, till I put a tach on it... spinning it at 14,500 rpm. I dont like speed, I like power, so I decided to try a 12.25 X 3.75 and it spins at 12,500 rpm. I love this new prop. I can now prop hang my LT-40 for almost 2 mins ! Doesnt have any pull out though, but it does hang there ! lol

APC props are ugly but you can paint them with semi-gloss Krylon and add yellow tip paint. Make sure they are still balanced and they look much better.

gota disagree with that. When I was learning to land on a 3 channel trainer, I kept decking the same prop, no joke I musta hit the ground with it at least 25 times, one of which resulted in removing ALL covering from the airplane coz i did that much damage.

It took a written off sports bipe to kill that prop.

my $0.02

And which prop ius it that you are referring to?!?[8D]

I have tried a range of props. Pretty much the only brand I use now is APC. Oh and I have two TT 46 pro engines and use APC 10 X 6 on both.

I had a sweet stick 40 with a TT Pro 46 a couple of years back. The prop that worked best for me was the APC 11.5 x 4.

I still fly a OS .46 SF in a Sig Something Extra and use a APC 11 X 4 which seems to be the largest prop the engine will run reliably with. Although I am sure this older .46 produces less power than the new .46's. Still gives the plane decent speed and a nearly unlimited rate of climb. One thing nobody else has mentioned here is if your plane is light with a low wing loading a higher pitch prop could cause your plane not to want to land, in which cause regardless of performance you will want a smaller prop.

I have a Ultra Stick 60 with a OS 61 FX and I use a wooden 12x6. Works pretty good.
BTW, I use a 10x6 on a Avistar.

Just my 2 cents,
IBrakeForNobody

I've got the Evo .46nt in my Kadet LT-40, and I am running Master 11x6 and 11x7 props. I've had good luck with both. Try the Master Scimitar series props, they seem to have the same attributes as the APC's.