Propeller Sizing
Dear Expert, Propeller sizing help needed!
I bought a Hobby Shack Cessna 150 many years ago along with an OS MAX 10 and an OS MAX III 15.
I recently retired and built it with the OS MAX III 15 on board. The absolute distance from the prop center to the ground is 6 3/4".
The specs of the model are:
SPAN: 45.5 inches
AREA: 315 Sq.inches
WEIGHT: 23 TO 38oz
ENGINE SIZES: SINGLE CHANNEL .051 - .09
TWO CHANNEL .09 - -.15
3 & 4 CHANNEL .15 - .19
FREE FLIGHT .049 - .10
The final weight is 38.25 oz. empty and a 2 oz fuel tank. I fired up the OS MAX 10, on a board, and it started and ran very well. I intend to run the OS MAX III 15 in the model with some taxi-ing tests for break in.
I am leary about my ability to determine a proper range of propellers for this setup, any help would be appreciated.
My expertise is not great but I fly an EASY SPORT 60 with an ENYA 80 4 stroke about once or twice a week, and almost every morning I fly GWS Pico Moth and Cub interspersed with the new Apprentice.
Thank You in advance, Don Hopkins (AMA 612370)
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Propeller sizes
Is there any where that I can go to get, or work out, what size prop should be used on a plane, eg a Mustang with a OS91FS.
Does high or low wing affect what prop should be used? Is there a formula to work out prop sizes on different planes?
Many thanks...
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Sizing Propellers To My RC Airplane
by Jason
(Pearland, TX)
I have flown trainers for some time and am about to jump into the world of scale rc's. I have never been versed in the art of sizing a propeller to the airplane - I am going to buy the CMP Cessna 182 ARF Skylane, engine size is 46-50, 2950-3100 gram weight.
I am thinking of going with a 4 stroke engine and I'd rather have power to spare. Can anyone recommend a prop and what do I need to consider when sizing?
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