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Old Feb 01, 2009, 07:42 PM
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A quikie, the Hangar Rat

To teach my girlfriend how to fly I built a 40cm wingspan Hangar Rat for Plantraco gear. It came out weigthing just under ten grams without the battery. Not particularly light but it should do OK.









All balsa and covered with japanese tissue. I made the wings detachable so it's easier to store, transport and so it can take some punishment during the training.
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Old Feb 01, 2009, 08:06 PM
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Looks GREAT brother!

Randy
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Old Feb 01, 2009, 08:19 PM
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DITTO! What Randy said.

Nice.
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Old Feb 01, 2009, 09:31 PM
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Thats pretty slick!! I really like those wheels!!


Cheers,

Greg
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Old Feb 02, 2009, 02:39 AM
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Thanks folks.

Quote:
Originally Posted by gbarc
Thats pretty slick!! I really like those wheels!!


Cheers,

Greg
Ah, yes. The wheels and other parts came from what was left of my Whimsy model. I recycled the control gear, motor, pushrods and control horns. It didn't feel well to pry them off the Whimsy though.
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Old Feb 02, 2009, 07:14 PM
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I worked a little bit on the model last night and now it's completely finished. I had to add a tail skid and battery holder.

The tail skid has a small wire loop so it won't get chewed up when taxing on concrete.



The battery holder was a bit of a headache, I would have wanted the battery to be further forward but then I'd have to make new leads for all my batteries, so in the end I placed it just ahead of the CG.
The battery is slightly thicker than the holder and the top balsa supports have the grain running parallel to the fuselage so that when I slide the battery in they act like springs, holding the battery quite firmly in place. The tissue around the battery holder keeps the wood from splitting.



Next weekend I'm going trekking so I won't be able to test the plane, but I'll see if tomorrow I can bring it to work and try it in the back of the office.
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Old Feb 15, 2009, 07:36 AM
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Well, this late afternoon I did have time to go to the park and maiden the Hangar Rat. It flies so nicely! the rudder is a little weak but that's fine, I just strolled around in wide, lazy curves.



As the Sun was getting lower the wind almost completely died so it was very relaxing to fly around, I could just leave it trimmed for a circle and it would go around and around...



The power to weight ratio is pretty good, I can climb away at what seems a 45 degree angle and loopings are no problem.



I love flying my small models around my head...
Later in the afternoon, as it was getting dark, I was flying the larger Parkflyer Pete while some big and ungainly bug started to buzz around my head, so I tucked the plane's nose, pointed the plane at myself and buzzed the sucker in return.
Very practical this little models, very practical indeed.



Oops, where did it go?



My girlfriend took some interesting shots. I don't know if she intended this one to look like this, but I really like the effect.



All in a wonderful day at the park, except for a kid that was running around throwing sticks at the plane...
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Old Feb 17, 2009, 06:15 PM
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Ha ha! I love the last two pics. Was that the same kid that killed your Whimsy?
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Old Feb 17, 2009, 07:44 PM
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Quote:
Originally Posted by all4smallrc
Ha ha! I love the last two pics. Was that the same kid that killed your Whimsy?
The one throwing sticks at the Hangar Rat?, no, different kid.
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Old Feb 17, 2009, 07:45 PM
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Very nice plane and very nice pics. Exellent detailing on your Hangar Rat.

Gordon
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Old Feb 28, 2009, 11:26 PM
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I've been asked about the wing construction of this model so I may just as well reply here.

I made ribs from 1mm balsa, a 1.5mm trailing edge, 2mm for the leading edge and a single spar 1.5mm thick on top of the airfoil.

In the center section I used some 1mm balsa to reinforce the bottom where it contacts the "saddle" of the fuselage.





That's my favorite way of building wings, not only is light and simple, but it also, when the tissue is shrunk, it naturally tends to create some washout on the wingtips.
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Old Mar 01, 2009, 09:31 AM
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You can't see any glue at all! That's pretty amazing to me...
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Old Mar 01, 2009, 10:17 AM
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Quote:
Originally Posted by PiperCub49
You can't see any glue at all! That's pretty amazing to me...
The trick is to use a pin to apply the glue; put a little drop of CA on the tip and use that on the joint.
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Old Mar 01, 2009, 10:21 AM
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I was thinking Titebond, ect., not CA. That's really neat. I'll have to give it a try.

-PC49
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Old Mar 13, 2009, 10:39 AM
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try to build this one myself.What did you seal the tissue with to keep the weight down?Looks good
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