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Old Nov 04, 2004, 08:24 PM
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NJ
Joined Aug 2003
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Quote:
Originally Posted by mexico
ronrandle - my wattmeter came today and thanks to Jon I got some Deans connectors on it tonight. (Not as easy as it sounds.) I will test the E Flite 400 tomorrow night but I did get to quickly run the AXI 2212/34 on a Ph 10, APC 12x5 E Prop and an Etec 1200 3s1p 2nd Gen pack. Up to 3/4 throttle amps were very low - 4-6 amps. WOT 9.1 amps at I think 66 watts.

Just to compare the Lehner 1020/12 on a Ph 35, Kokum 3s1p 2000 (15C) and a APC 11x3.8 SF - WOT 27 amps and 260 watts (pack was not fully charged)
To ronrandle and anyone else that looked at my wattmeter numbers on the AXI 2212/34 last night - I was mistaken re: watts. It was not 66 watts. I am surpised no one jumped on me. I redid the test on both the AXI and an E FLite 400 (4200kv) on a D geared GWS GB:

AXI 2212/34 1/2 throttle WOT

11x3.8 SF 1.2 amps 14 watts 10.5 amps 102 watts
11x5.5 E 1.3 amps 15 watts 7.6 amps 80 watts
12x3.8 SF 1.6 amps 19 watts 12 amps 117 watts
12x5.5 E 1.5 amps 18 watts 9.5 amps 96 watts

E Flite 400 GWS D gearing 11T pinion ($55)

11x3.8 SF 6 amps 65 watts 12 amps 120 watts
11x5.5 E 3.7 amps 42 watts 10 amps 104 watts
12x3.8 SF 5.2 amps 57 watts 17 amps 160 watts
12x5.5 E 4.9 amps 53 watts 15 amps 140 watts

My Etec 1200 pack started off at 12.2 volts. By the end of the test it was down to 11.98 v (if that means anything)

Formatting got messed uo so I attached it as a Word doc as well.

Hope this helps someone
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Old Nov 05, 2004, 04:19 AM
wizard of OZ
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N.S.W Australia
Joined Feb 2003
857 Posts
hey guys,

thanks for the support.


the nose is gone IMHO, i will have to cut out a new part(sorry for the lack of building knowledge) to support the aft end of the stick.


as mexico said i might get one of the cobri flush stick mounts, might make life easier.


i sure nocked her poor old nose off well, its in few peices.

BTW, sorry for the sympathy posts, always a habit when you mess up a great plane.
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Old Nov 05, 2004, 10:28 AM
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Huntersville, NC
Joined Jul 2002
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Mexico, those numbers look a little bit better. I'm still planning on my maiden with the RZ 350 because I know how it pulls around my other planes.

Thanks again for all the info.

Ron
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Old Nov 05, 2004, 01:34 PM
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Norfolk Intl, Virginia, United States
Joined Jul 2002
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Maiden this morning in 15+ mph winds....

Very stable, yet wild when you want it with throws. Vertical is probably 60 mph straight up- kinda crazy! I kept the CG a little forward for wind penetration and it did very well. A little too gusty to really ring it out, but just had to fly it. I hovered (if you can call it that with a cross wind moving it across the field) and under half throttle....Tumbles effortlessly. Man, my flag scheme looks even better in the air. It was literally blowing like a flag.

Hopeful for the winds to die so I can really have some fun. Another outstanding addition from SA! I love it already....

-Ted
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Old Nov 06, 2004, 01:19 PM
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USA, IL, DeKalb
Joined Dec 2003
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Ted,
Is your Lehner 1020/15 a metal can or carbon fiber? Also, can you tell me what the weight of the motor alone is?

Wishing for calm skies for you so you can take some video for us

Steve
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Old Nov 06, 2004, 02:15 PM
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Norfolk Intl, Virginia, United States
Joined Jul 2002
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Quote:
Is your Lehner 1020/15 a metal can or carbon fiber? Also, can you tell me what the weight of the motor alone is?
I think it's metal although it does have some texture so it could be CF. How's that for a absolute answer.

I've been hoping the Mrs. will tell me to go out and buy a new video camera some day....Then maybe she'll shoot some video.

Today was calm in the am, but I had other commitments....Now it's windy again.

-Ted
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Old Nov 06, 2004, 03:47 PM
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NJ
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Steve and Ted - I believe the Lehners are metal and the weight is 62 grams
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Old Nov 06, 2004, 04:10 PM
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USA, IL, DeKalb
Joined Dec 2003
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Ted and Mex, thanks for the answers. Was just reading in another thread about the Lehner weighing 1.6 oz. Just wondering if there are two different versions of this motor.

Steve
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Old Nov 06, 2004, 04:18 PM
Live to fly!
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United States, NJ, Fair Lawn
Joined Nov 2002
3,081 Posts
Quote:
Originally Posted by chimchim
Ted and Mex, thanks for the answers. Was just reading in another thread about the Lehner weighing 1.6 oz. Just wondering if there are two different versions of this motor.

Steve
Steve,
There are several versions of the Lehner motors. See http://www.b-p-p.com/Lehner.htm
Doc
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Old Nov 06, 2004, 04:23 PM
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Norfolk Intl, Virginia, United States
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Steve,

I think the 1020/15 is probably overkill for this size plane. I'm afraid I'm going to rip the fuse apart when it gets close to WOT. If I had unlimited $$$, I'd get a 1015/20 for the Stella...It's more of a 200 watt class motor, instead of a 300 watt class which I'm using as a 200....In fact, I'd be up for anybody who wants to trade me.

-Ted
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Last edited by twu01; Nov 06, 2004 at 04:29 PM.
Old Nov 06, 2004, 04:29 PM
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NJ
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There are 3 sizes offered at BPP 1010, 1015, 1020. The weigh 41, 52 and 62 grams respectively. I have a 1020/12 and like Ted I get a little intimidated by its power sometimes. I guess I could always use a smaller prop.

Ted what size prop do you run on the Lehner?
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Last edited by mexico; Nov 06, 2004 at 04:32 PM.
Old Nov 06, 2004, 04:38 PM
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Norfolk Intl, Virginia, United States
Joined Jul 2002
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I'm running a 10x6 HD now with a 6 to 1 GB. I'm trying to decrease the amps in order to fly with my 1570 3S pack. I'll check the whattmeter later...When I flew it with the 11x7, I got 43 oz of thrust at 25-27 amps static, way too much for the cells. Of course, I only needed 1/3-1/2 throttle the entire flight.

-Ted
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Old Nov 06, 2004, 04:47 PM
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I have mine in an Atttude. I have an APC 11x3.8 SF on it with a Kokum 2000 15C pack. It pulls 27 amps. But like you, I fly at 1/2 throttle or less. Once in a while I get brave. Full down elevator with a blast of throttle is hysterical. Maybe I should try a 10x4.7 or even a 9x3.8 or 9x4.7 that I have laying around.
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Old Nov 07, 2004, 11:29 AM
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Spring, Texas
Joined Feb 2004
1,258 Posts
Finally started on my Stella last night after finishing my son's "Miracle" EPP. I've got to say that of the 19 years of building kits, Stevens Aero is the best I've ever built !!
I'm still debating colors and type of film to use. I've heard of the "lite" covering materials but see that they a bit more difficult to use than the standard monocote, ultracote, etc. Anyone have recommendations? Is the weight difference really worth the extra cost and hassle?

By the way, Ted - your Stella is absolutely gorgeous. What covering did you use?

-Stuart
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Old Nov 07, 2004, 12:07 PM
Scott Stoops
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United States, CO, Longmont
Joined Mar 2002
8,415 Posts
Here is a shot from yesterday's flying
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Last edited by sukhoi26mx; Nov 07, 2004 at 08:54 PM.
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