what size propeller
 

I just bought a Tiger 60 airplane it came with aTower 61 and a12x6 prop. on it. I have two charts for props to engine and this time i have two different answers one says use a 12x6 and the other says use a 13x6 . should i go 12x6 or 13x6 ? I'm not looking for speed but easy take off and nice and easy fling.

RE: what size propeller
 

There is a range of sizes that will keep the engine in it's working rpm range. It's up to the owner to test different props to find the one that will fly the plane the way the pilot likes. There is no one size.

RE: what size propeller
 

Hi!
Best prop would be a 12x6 APC or RAM! 13x5 would work too.
13x6 is too big!

RE: what size propeller
 

Didn't the prop-chart sticky at the top of the forum help?

RE: what size propeller
 

I looked at the chart at the top of the page and that was one of the charts i use .I cant remenber where i got the other chart but the one at the top of the page has the 12x6 prop that i thought was right .so thanks

RE: what size propeller
 

might try a 13x4w if they are still around... (haven't flown glow in a bit)

RE: what size propeller
 

Those are recommended starting points. What most of us do is have a box of props of varying sizes and try them, starting at the recommended size then go from there. Don't worry about having to many props when you are done. Ask Gray Beard, RCKen, Minnflyer, or John Buckner about prop collections... :D

CGr.

RE: what size propeller
 

From the manual:
Propeller: For "break-in" and most trainer and sport airplanes, we suggest a Top Flite 11x7 Propeller (TOPQ5110). A 12x6 Propeller (TOPQ5140) may also be used.
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From there, experiment until you find what you like best. I've used four props on .61 two strokes:
11x7 - worked ok
12 x 6 - works very well, my "first choice" for the engine on a sport plane
13x4W - works well, great thrust, costs a lot more than 12x6
13x5 - engine seemed to be overloaded. Maybe it was too new for the prop, never tried it again

RE: what size propeller
 

The last couple of years I have giving away a lot of props out at the field so my collection is way down now. I went to the club auction this year thinking I would stock up on props, we have one fellow that must have 2000 props in his van every year. He didn't show this year. The biggest collection I have ever seen owned by one person is John Buckner. John is also the one that reminded me about buying props at club auctions and swap meets. I'm holding good in the sizes I use for my own engines but having too many props is something that can't be done. Not just sizes but makes/brands too.

RE: what size propeller
 

Yup... right on the money... as is the recommendation for the 13x4.

All are right on the upper edge for the Tower .61 engine.

I fly my SuperTiger .61's with 13x4 to get more thrust and because of the low pitch the RPMs stay high enough to keep the speed up.

IMHO The Tower Engine is a bit stronger than the ST.