Electric Stunt > Gettin all AMP'ed up!

Props for AXI 2826/10 ?

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Rudy Taube:
Hi Guys,

I have been using an AeroNaut CF 10 x 6 prop. It flys my 57 oz. P-40 very well at about 85% power. But, it is flying  faster than the other planes (glow) at our field. A little under 5 sec laps on 60' eye to eye lines.

The plane flies great. Plenty of line tension everywhere. It will do an unlimited amount of overhead eights (I stopped at 8, my neck got tired ;-) But, I would like to be able to fly slower like the other planes.

When I turn down the power, I lose some of the line tension overhead that I have come to love. The LOs and CG seem to be in a good location according to local experts.

A Zinger Pro 11 x 6 gave awesome power (of course same speed) but it really sucked down the battery. On the 10 x 6 I use approx. 2,700 mAh per 6min 30 sec flights. With the 11 x 6 I used 3,900 mAh from my TP 4,200 4S2P Battery. The Battery and Motor were both hotter than normal. (da! ;-)

Would a 11 x 5 wood prop work better? How about the Bolly 11 x 4 props used on the Aero Tiger glow engines

What props are you all using? Please include brand when you answer, along with the size. Also, please mention if you had to modify the prop to get the size you use.

I have just ordered a Prather (SP?) Pitch gauge so I can modify props. I have never done this before, but I hear this is what guys are doing to get the right prop for our electric planes.

Thanks in advance for your help on this.

Quote of the day:

    "Without ammunition, the USAF would be just another expensive flying club."

linheart smith:
Rudy,

I don't believe I can help you with the RIGHT prop as I am still searching for that elusive item myself.  In the mean time I am flying my  Bearcat with a 12-6E.


Please tell me where I can order a Prather Gage.  Thanks

linheart
   

Rudy Taube:
Hi Linhart,

I watched your beautiful Bearcat fly on one of Windy's videos. It looks like a perfect setup. Nice flying too! :-)

Thanks for the input. I have to assume that the Electric props have a lot less drag, and load, than the regular props made for glow. After my experience with the Zinger Pro 11 x 6, I would think a 12 x 6 Zinger would melt my motor and Battery! ;-)

I'm going to try the APC Electric 11 x 5.5, this is what my LHS had.  I will order some different props and start experimenting. I did not want to try different ones until I got the plane trimmed out. Now, with about 25 flights on it, it is time to try some new props.

RE: Pitch gauge. I ordered one from my LHS, Covina Hobbies in West Covina CA. (near our flying field in the  LA area). I always try them 1st. Your LHS may be able to do the same? But if not, Brodak carries them.

    http://www.brodak.com/shop_search.php?productsearch=pitch+gauge 

Thanks again for your help. I hope others pitch in here so that we can all learn more about props from each other. :-)

RC Storick:

--- Quote from: Rudy Taube on December 26, 2006, 04:56:38 PM ---RE: Pitch gauge. I ordered one from my LHS, Covina Hobbies in West Covina CA. (near our flying field in the  LA area). 

--- End quote ---

I use to go to Ed's Covina hobby as a boy. We lived right at Sunset and Fransquito and I would spend all day riding my bicycle up to ED'S and spend all my lawn mowing money for the week. Those were great times!

RandySmith:

--- Quote from: Rudy Taube on December 26, 2006, 01:13:32 AM ---Hi Guys,

I have been using an AeroNaut CF 10 x 6 prop. It flys my 57 oz. P-40 very well at about 85% power. But, it is flying  faster than the other planes (glow) at our field. A little under 5 sec laps on 60' eye to eye lines.

The plane flies great. Plenty of line tension everywhere. It will do an unlimited amount of overhead eights (I stopped at 8, my neck got tired ;-) But, I would like to be able to fly slower like the other planes.

When I turn down the power, I lose some of the line tension overhead that I have come to love. The LOs and CG seem to be in a good location according to local experts.

A Zinger Pro 11 x 6 gave awesome power (of course same speed) but it really sucked down the battery. On the 10 x 6 I use approx. 2,700 mAh per 6min 30 sec flights. With the 11 x 6 I used 3,900 mAh from my TP 4,200 4S2P Battery. The Battery and Motor were both hotter than normal. (da! ;-)

Would a 11 x 5 wood prop work better? How about the Bolly 11 x 4 props used on the Aero Tiger glow engines

What props are you all using? Please include brand when you answer, along with the size. Also, please mention if you had to modify the prop to get the size you use.

I have just ordered a Prather (SP?) Pitch gauge so I can modify props. I have never done this before, but I hear this is what guys are doing to get the right prop for our electric planes.

Thanks in advance for your help on this.

Quote of the day:

    "Without ammunition, the USAF would be just another expensive flying club."

--- End quote ---

Hi Rudy

I can tell you the most common props I sell for that motor
3 blade Bolly 11 x 4n  and  12x4 n
12 x 4 cf Bolly
11 x 6 Cf bolly,  all these  props are very easy to turn
Bob Hunt uses  a  prop That is almost exactly the same as the 11 x 4 3 blade, he has both  Bollys and Bill Lees thin 3 blades, so does several other people.
there is also a host of APC props that can be used also 12 x 3.75 is used too.

Regards
Randy

PS  I also have  pitch gauges in stock

www.aeroproduct.net

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