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Old Nov 03, 2011, 06:36 AM
it wasn't me flying that plane
Hover or die's Avatar
United States, NC, Wilmington
Joined Mar 2011
704 Posts
Great looking aircraft!!Love the retracts and their excellent fit!!!!
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Old Nov 03, 2011, 06:30 PM
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Jeanskydive's Avatar
Canada, QC, Saint-Jean-sur-Richelieu
Joined Feb 2009
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Thunderbolt A-10

Almost ready, wait for one motor and maiden nex. Cheers
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Last edited by Jeanskydive; Nov 18, 2011 at 09:38 AM.
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Old Nov 03, 2011, 07:13 PM
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X30PILOT's Avatar
Joined Aug 2007
440 Posts
Quote:
Almost ready, wait for one motor and maiden for-it. Cheers
Very nice. I'm looking forward to the flight report.

X30
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Old Nov 18, 2011, 12:28 AM
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Canada, QC, Saint-Jean-sur-Richelieu
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Thunderbolt A-10

Thunderbolt A-10 motors tests. (1 min 15 sec)
Today test at full throttle for the Mega 1625/2 with Het 70mm fan ,5S-5000 LiPo 65C , plane weight 5.9 pounds, 7.1 pounds with batt. nex test, in the air for maiden . Cheers
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Old Nov 18, 2011, 02:04 PM
A Texan abroad
torque roll's Avatar
Joined Oct 2011
936 Posts
It looks excessively wide. Length should be more like 1400mm the in stead of 1080mm. Still, it's an impressive plane.
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Old Nov 24, 2011, 01:25 AM
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Jeanskydive's Avatar
Canada, QC, Saint-Jean-sur-Richelieu
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Thunderbolt A-10

With that snow we received no choice to make a set of skis for the A-10 if I want to fly tis plane this winter,. Today I did somes accélération tests on the grass (wet grass) and looking verry good, plenty of rudder for is direction and with a fresh snow with hard surface will be perfect , so the skis riging terminated and wait for minus 0 and snow for this bird. Cheers
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Old Nov 24, 2011, 07:52 AM
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Larry Dudeck's Avatar
Williamsville, NY, USA
Joined Sep 2000
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Jeanskydive,

I've been following this thread closely as I'm in need of a new A10, losing mine to what I believe was a case of receiver "brownout".

I originally built my A10 as my winter plane, with the intention of flying off snow. So the LG nacelles were simple flat bottom structures, about 2" wide by 8 inches long. They worked great.

Good luck on the maiden.
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Old Nov 24, 2011, 10:58 AM
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Canada, QC, Saint-Jean-sur-Richelieu
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Thunderbolt A-10

Yes Sir looking good even in the grass acceleration verry good, on the fresh powder snow, fews inches, snow storm behind!!
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Old Nov 25, 2011, 08:01 PM
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Jeanskydive's Avatar
Canada, QC, Saint-Jean-sur-Richelieu
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Thunderbolt A-10

Test, acceleration on the wet grass-mix., wait for snow cover for
Test accélération (0 min 14 sec)
maiden. Cheers
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Last edited by Jeanskydive; Nov 26, 2011 at 06:39 PM.
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Old Nov 28, 2011, 09:32 PM
Another one on the way...
ysolomon's Avatar
Plano, Texas
Joined Feb 2009
2,359 Posts
Just got mine. Looking good!
Few questions:

I noticed you used 125 for the rudders and 225 (?) for the elevator. How about the ailerons and flaps?

Did you actually glue the fans to the nacelles?
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Old Nov 28, 2011, 10:32 PM
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Thunderbolt A-10

For the flaps and ailerons I use HS-85 metal gears., I use transparent silicone for fix in place the motors in the nacelle, take the vibration and fix quite strong the fans in place. Cheers
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Last edited by Jeanskydive; Nov 28, 2011 at 10:47 PM.
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Old Nov 29, 2011, 12:08 AM
A Texan abroad
torque roll's Avatar
Joined Oct 2011
936 Posts
Looks nice. If "projet" makes a jas 39 grippen for a 90mm fan, or F-117 for twin 70's, I will personally think them. Who here would like to see a nice twin 70mm Fiberglass F-117 Nighthawk?
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Old Nov 29, 2011, 06:12 AM
Another one on the way...
ysolomon's Avatar
Plano, Texas
Joined Feb 2009
2,359 Posts
Thanks. Did you try to put 225's there? I was hoping they would fit...
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Old Nov 29, 2011, 07:33 AM
Another one on the way...
ysolomon's Avatar
Plano, Texas
Joined Feb 2009
2,359 Posts
I finally did the servo torque calculation using http://www.mnbigbirds.com/Servo%20To...0Caculator.htm and got the following:

Aileron: 55mm cord, 220mm length, 30 degrees (too much) deflection, 45 degrees servo movement, and 120mph speed (don't believe we will get there...). I got 23.5 oz-in.

Flaps: 65mm cord, 400mm length, 40 degrees deflection, 45 degrees servo, 60mph speed (no, I will not be landing at 120mph...). I got 27.9 oz-in. If I consider that the servo throw will actually be 90 degrees to get 40 degrees flap deflection (flaps don't need to go up...), then the servo needs 12.1 oz-in.

Elevator: 50mm, 290mm (both), 120mph, 30 degrees (too much), 45 degrees servo movement: 25.6 oz-in

Rudder: 35mm, 175mm, 30 deg, 45 deg, 120mph: 7.6 oz-in each
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Old Nov 29, 2011, 08:35 AM
Another one on the way...
ysolomon's Avatar
Plano, Texas
Joined Feb 2009
2,359 Posts
Now, looking at servos:

HS-65MG: 25-31 oz-in (4.8V-6.0V) $29.99
HS-85MG: 42-49 oz-in $30.99
HS-125MG: 42-49 oz-in $34.99
HS-225MG: 54=67 oz-in $25.99

I don't see any reason to go with more powerful servos given the torque calculations above.

However, there is one more consideration: room in the plane...

The maximum depth for the aileron servo is 17.5-18mm. This rules out the 225MG.

The distance between the two studs in the wing for the flaps servo is less than 25mm. This kind of leaves us only with the 65MG (unless we move one or both of the studs).
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