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Old Jul 03, 2015, 04:40 PM
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30" Standard J-1 Build

I started this model a while ago and was considering converting it to electric power with rudder and elevator controls. Does anybody have any advice if this Dumas kit would be a good candidate and what components to use? I am yet to start on the tail feathers while I decide on rubber power or electric conversion.
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Old Jul 03, 2015, 06:33 PM
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Paul

Do a search for Pat Trittle threads. He converted one years back. With today's equipment any 5 g or smaller servos would be fine. Don't need much power but it will be nice to swing a big enough prop so maybe 250 size out runner.

Good luck

Hank
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Old Jul 03, 2015, 11:18 PM
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Yep, look up Pat's thread (it may still be in the Scale RTF forum).

I remember it flew, but, don't remember how well. Also don't remember if Pat used an IPS or SP280 on it (was a long time ago ).

charlie
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Old Jul 04, 2015, 09:55 AM
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Found the there'd on Pats build

http://www.rcgroups.com/forums/showthread.php?t=263738

Enjoy

Hank
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Old Jul 05, 2015, 01:08 PM
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Wow, thanks so much! That'll be a big help!
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Old Nov 15, 2015, 10:13 PM
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Flight Gear

So I chose to use a 15 gram E-max GT 2203 brushless motor, 10 amp e-flight ESC, micro reciever and two 3.5 gram servos for rudder and elevator control powered by a 2C 300 mah Battery. Total build weight all included came to 5.2 oz
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Old Nov 15, 2015, 10:26 PM
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Covering and finish

I wanted to use as much of the supplied materials from the kit as possible, so the covering was light weight natural linen silkspan applied with clear dope and then finished with two coats of buff colored flat dope. Supplied graphics were cut from peel and stick decals and coated with flat dope. All the flying wires and rigging wire .004 beading thread found at craft store pull pull for both elevator and rudder.
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Old Nov 15, 2015, 10:43 PM
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Maiden flight

My first couple attempts to rise off of the ground produced scary results. I need about 6-8 clicks of right rudder correction and some down elevator trim to avoid a sharp climb and left spiral, after making trim corrections and calming my nerves I achieved controlled flight!
Balance seems to be just right with the battery as far forward in the front cowling, I have a small hatch under the bottom wing for access. I am not sure if I have a small twist to the vertical stabilizer or a slight mis-alignment in the wings but with the right trim the model flies extremely well.
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Old Nov 15, 2015, 10:51 PM
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How to post video?

I am not sure how to post video?
Does anybody have any suggestions?
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Old Nov 15, 2015, 11:14 PM
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The standard looks great. Most guys up load the video to you tube and then post the link.


Hank
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Old Nov 15, 2015, 11:21 PM
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Beautiful plane! Well done!
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Old Nov 15, 2015, 11:27 PM
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Also reading your description of the test flight make sure you have enough down and right thrust.

Hank
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Old Nov 15, 2015, 11:50 PM
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Take off video

MVI 5398 (0 min 11 sec)
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Old Nov 16, 2015, 12:31 AM
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Great job Paul. Looks very scale and I'm sure it flies the same.

Larry
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Old Nov 16, 2015, 07:21 AM
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Right and Down thrust

Quote: Also reading your description of the test flight make sure you have enough down and right thrust.

Hank

I probably did't include enough, next model I will try 2 or 3 degrees down and right. Problem is with how I attached the front cowling I cant make any adjustments now. Seeing as it flies really great I am going to leave alone
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