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Author Topic: Number 2 ... NEW Butterfly kit bash  (Read 815 times)
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lownslo
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DynaFlite FlyBaby

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« on: March 14, 2008, 06:03:25 PM »

Hello Fellow Kit Builders,
I loved the way my 1st Butterfly flew.... both .15 LA ... Then an electric conversion.  I hope this one is bigger and better. We will see.  I am going to try and post a few photos at a time to go through the building of this little jewel. 
Bob ...... Lownslo


* c. longer-electric nose.jpg (93.44 KB, 1003x624 - viewed 45 times.)

* b. add 2 bays to plans.jpg (115.31 KB, 900x695 - viewed 49 times.)

* canopy.jpg (121.98 KB, 1001x613 - viewed 39 times.)
« Last Edit: March 14, 2008, 10:02:14 PM by lownslo » Logged
lownslo
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« Reply #1 on: March 14, 2008, 09:52:14 PM »

BORING......  Grin  I have all kinds of building photos of this kit bash if someone would need them.  I would like to jump ahead and show you a couple photos of the wing halfs...... then the parts sitting loosely on the fuselage as a preview.  The leading edges were not shaped here, and the outer panels were not glued together.  There is a 1/4", carbon fiber solid rod, epoxied inside a brass tube.... and this slides into the next size bigger brass tube.  This is my center wing joiner so I can more easily transport the large span wing.  The tail feathers were rounded, not angles as in the plans. (Tail feathers were not shaped / sanded yet in this photo).  Note:  I have also added ailerons to the bash.  I plan on using them as flaperons.  The original plans had no provisions for ailerons.....just rudder and elevator.
Bob  ....  lownslo


* test fitting parts.jpg (149.71 KB, 998x605 - viewed 69 times.)

* dry fit .. tail feathers.jpg (144.87 KB, 950x615 - viewed 51 times.)
« Last Edit: March 14, 2008, 10:07:36 PM by lownslo » Logged
Chuck Baker
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« Reply #2 on: March 16, 2008, 08:03:57 AM »

Bob,

Looks like you're having fun with this build - Looking good!  Smiley

I did have a thought though...
Did you increase the size of the stabilizer to compensate for the extra wing area?

Chuck
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« Reply #3 on: March 16, 2008, 07:25:43 PM »

Looking good. I have a butterfly that I thought already had more than enough wing. I used it to loft a 35mm camera for arial photos. That camera weighed almost a pound and it had no trouble.
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lownslo
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« Reply #4 on: March 16, 2008, 07:54:41 PM »

Thumbskull,
Yeah..... the wing already had ample span, but I was hoping to gain more duration using this as a sailplane too.  My old Butterfly, before the conversion to electric, had a .15 LA on it.  I would get it up and idle back.  That cheap old LA would just keep running at idle and give me power for a new climb when called upon. It only had a 4 oz. tank, but I once had that puppy up over 50 minutes.  Later that year, I  actually got it up in a VERY strong thermal and it was lost .... until about 2 hrs later.  (This was on the EastSide field).  A member saw a plane in an open, harvested field about 500 yards out.  I drove to the wreckage via a road in the field used for combines.  I pulled up within 25 feet of it.  It was barely damaged.  When I repaired it I converted it to electric power.  Photo attached was the old B/F conversion.
Bob ...... lownslo.


* It flies very good.jpg (124.09 KB, 800x714 - viewed 55 times.)
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« Reply #5 on: March 16, 2008, 08:00:19 PM »

Cool!

Mine is the MarkII version with the square looking tailfeathers. Built it in about 1985 with an OS .25 and it still flies but I think I will update the radio to 2.4.
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lownslo
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« Reply #6 on: March 16, 2008, 08:01:59 PM »

Bob,

Looks like you're having fun with this build - Looking good!  Smiley

I did have a thought though...
Did you increase the size of the stabilizer to compensate for the extra wing area?

Chuck

Hi Chuck,
OPPS !!! Roll Eyes  It looks like I flunk the aeronatical engineer test!!
Hope it flies OK like it is.  I do plan to try it as is.  Keep your fingers crossed!! Shocked
Attached is a ROUGH CG test, with all electric things in place.  Looks like there will be no issues that can't be addressed with just the battery movement.


* ROUGH .. CG test.jpg (154.58 KB, 979x617 - viewed 49 times.)
« Last Edit: March 16, 2008, 08:03:50 PM by lownslo » Logged
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