Originally Posted by DavidN

Je comprends le francais aussi, un petit peu.
However I thought I might find a mention of efficiency of the motors, so I translated. Sadly no records of efficiency.

The efficiency percentage is the REND column, short for rendement, in French. The translator incorrectly turns this into MAKES for some reason.

The only columns I am seeing are:-BRAND: ID: MOTOR: KV: WEIGHT: W: V: A: TEST(plane)

Where on the page is the other column? Perhaps my screen resolution is cutting it off.

Can someone tell me the difference between using a 12x8 vs a 13x6? They both give roughly the same wattage etc. but I read that the larger diam. props are for more thrust for 3d hovering etc, and the smaller diam. prop wit greater pitch was for more forward speed for acrobatics. But isnt thrust also speed? Can a smaller diam. prop with greater pitch be equal to a larger diam. prop with less pitch?

Thanks in advance.....

Correct the 13" gives more thrust also for floats! 12x8 more speed but also since this is a slowish flyer it may use less watts at the required throttle setting. Try & see how you like each of them.

Originally Posted by DavidN

The only columns I am seeing are:-BRAND: ID: MOTOR: KV: WEIGHT: W: V: A: TEST(plane)

Where on the page is the other column? Perhaps my screen resolution is cutting it off.

Are you scrolling down to the bottom of the page? Here's the page for my motor with all of the data.

http://www.bungymania.com/imageshome...erf1.php?id=74

IT HELPS IF i CLICK ON THE MOTOR MODEL # TO GET TO THE INDIVIDUAL TEST DATA

Anyone using an APC prop? Wondering if the 12x8 or 13x6.5 will bolt right onto the power 32 collett with the step up. The 12x6 looks to bolt right up without drilling.

I have run the APC 13x6.5 on the stock Power 32 adapter with no problems. I am not using a spinner.

I'm using the recommended 13x6.5E APC prop on an EFlite Power 32. It seems to be a winning combination using a 4-cell 3300mah lipo.

The full-scale Beaver prop is already gray colored, so an APC was the natural choice.

I also painted the prop tips yellow (scale on the full-size Beaver), and added the Aviation BL prop stickers (also scale on the full-size Beaver).

Joe M.

I'm also putting on the 13X6.5E Prop... recently fried an ESC using a 3 blades MAS propellor (14X8X3) on my P40 Kyosho EP50. Wattmeter on static tests gave the impression that it could tolerate it but once on the air, fried after 2 minutes...

Model Airplane News reviewer used 12x8 3 blade on Beaver with power 32 4s

Oh thats comforting to know that the watt meter isnt the gold standard : ( Maybe your ESC was defective? 14x8x3 seems a bit much. I too read the review where a 12x8x3 was used and I know a member here used a 12x6x3 MAS prop with good success.

Originally Posted by DavidN

Model Airplane News reviewer used 12x8 3 blade on Beaver with power 32 4s

I ran four tests of a Master Airscrew 12x8 3-blade. Each test was run using an EFlite Power 32, an EFlite 60 amp ESC and freshly charged Hyperion 4-cell 3300mah lipos.

Out of the four tests at full throttle, my highest amperage was 66 amps. The highest wattage was 950. My lowest amperage was 63 amps. The lowest wattage was 925. This is right in the ballpark.

I just ordered a set of lightweight TruTurn 3-blade spinners. TruTurn will make a special 3-blade cut just for the Mas. Air. 12x8's. These will be going on my Hanger 9 Twin Otter.

TruTurn is also now carrying a 5MM electric prop adapter to adapt these same spinners to an EFlite Power 32 5MM shaft.

Joe M.

Here's my little electric motor test stand. Was fairly easy to fabricate.

I've tested a number of motors on it, so she's got a lot of extra holes drilled into her.

Joe M.

where did you find the 5mm prop adapter? I wen to the true Turn site and couldnt find it. Can I use that prop adapter with just a prop nut and the dummy radial eng.?? Also, did you have to ream the center of that MAS 12x8x3?? I see pic number 2 has that dreaded stepped collet!!! lol

Great test stand : )