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Old Aug 06, 2012, 10:53 AM
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Eagle, Idaho
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New SlowSpit WWII design by SlowBipe

I have some help building SlowBipe airplanes now, so it's time to introduce a new design.

Next comes the SlowSpit, my version of the WWII Spitfire. This is a design I have been working with off and on for the last 2 years. It is finally coming to perfection and will be available for purchase very soon.

I will show the progress of this latest prototype here as I go through the build and flight. I will probably make an initial run of these planes at a discounted price to get some feedback. If you are interested in this initial run, email me at sales@slowbipe.com.

Introducing the SlowSpit.
  • Wingspan: 27 inches
  • Length: About 24 inches
  • Construction: Foam, Carbon (lots), Plywood, Poplar and those very special rare earth magnets
  • Weight rtf: 6 oz to 7.5 oz
  • Wing type: Undercambered
  • Controls: Aileron and Elevator
Design goals:
  • Warplane design
  • Nearly Ready to Fly
  • Good Looks
  • Forgiving Flight Characteristics
  • Almost completely indestructible
  • Lightweight, but with solid control authority

This plane can really take a hit on grass. I have crashed earlier prototypes up to 16 times and the only damage was to the propeller.

The strength comes because we targeted this characteristic from the beginning. There is 10 and 1/2 feet of carbon rod/strip in the design. The wing is of a breakaway design and is held on by 4 rare earth magnets.

So here come the pictures. I will post more pictures as the build comes along.

SlowBipe
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Last edited by SlowBipe; Aug 08, 2012 at 09:15 AM.
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Old Aug 06, 2012, 11:54 AM
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United States, KY
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Thanks for posting. Can't wait to see more pictures!
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Old Aug 06, 2012, 02:51 PM
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Eagle, Idaho
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More Pictures

Here are a few more pictures of the build as it goes along.

Notice the carbon installed everywhere in this plane. The fuselage strength comes from the full length carbon top and bottom on the fuselage sides.

If you look close in picture 1, you can also see the detail of the magnet design for this breakaway wing.

SlowBipe
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Old Aug 06, 2012, 02:55 PM
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Once again, magnificent attention to detail. Easy to see why it will take a beating. How large a battery will fit inside?
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Old Aug 06, 2012, 05:14 PM
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Eagle, Idaho
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Quote:
Originally Posted by blurted View Post
Once again, magnificent attention to detail. Easy to see why it will take a beating. How large a battery will fit inside?
It could fit up to 1000 mah 3 cell, but won't need that much. I flew the last one on a 850 2 cell and a 9 x 4.7 prop and loved it. Very long flight time.

I will have to see how the balance comes out on this one, but expect it to be able to fly on a 450 2 cell as well. This makes for a very light flight and makes it nearly impossible to hurt the plane in a crash.

SlowBipe
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Old Aug 06, 2012, 05:28 PM
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Looks super cool!
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Old Aug 06, 2012, 05:32 PM
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Eagle, Idaho
Joined Feb 2010
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Now here come the real pictures. It's starting to come together as a plane.

It is hard for me to explain how strong this assembly is for it's size and weight. It is really going be able to take a beating.

I would love to hear some feedback from other flyers about this design as you see this plane develop.

SlowBipe
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Old Aug 06, 2012, 06:28 PM
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Really like the design. Will the tail feathers be removable? Any plans for landing gear?
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Old Aug 06, 2012, 07:06 PM
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Eagle, Idaho
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Quote:
Originally Posted by blurted View Post
Really like the design. Will the tail feathers be removable? Any plans for landing gear?
The horizontal stab and the rudder will come unattached. They would be strongest if glued into place, but I am sure you could attach them through some removable method.

No plans for landing gear right now.

Thanks, SlowBipe
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Old Aug 06, 2012, 07:20 PM
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Eagle, Idaho
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New SlowSpit WWII design by SlowBipe Air

Here are some more pictures. It's looking pretty good now.

Weight before electronics right now seems to be about 3.5 oz.

SlowBipe
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Old Aug 06, 2012, 07:22 PM
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Eagle, Idaho
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Quote:
Originally Posted by crash-man View Post
Looks super cool!
Thanks crash! You opinion means a ton.

SlowBipe
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Old Aug 06, 2012, 09:32 PM
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Eagle, Idaho
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Here are some more pictures. I added some paint first and then installed the electronics.

The tan and green were just a couple of paint cans I had laying around. No special paint job here, but I am happy with it.

The plane balances out easily with a 22g motor on the nose and a 44g or 1.5 oz 3 cell 450 mah pack.

SlowBipe
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Old Aug 06, 2012, 09:36 PM
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Once again, outstanding job. Thanks for the build pics.
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Old Aug 07, 2012, 12:27 AM
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Eagle, Idaho
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And One More Picture

Here the plane is out in the grass right after a landing of the first flight.

Wow! The flight exceeded my expectations. Everything balanced out to the tee with a 450 mah 3 cell near the nose. I wouldn't go lighter than this battery as there would be little advantage. I also tried with a 8 x 4.3 propeller and a 2 cell 850 pack. This pack has the same weight as the 450 3 cell. Using the 450 pack and the 7 x 3.5 propeller I flew for at least 15 minutes without running out the pack.

The plane was very stable, and would kind of stay at the angle it is placed in for a turn. This latest build has increased dihedral over the last and I like the improvement. The plane just looks good in the air. On a low pass approach it just feels like you are making a strafing run on a base.

The motor and pack from HeadsUpRC.com performed very well in the plane. It had sufficient power throughout the flight. I also was using one of their HURC 10 amp esc's.

SlowBipe
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Old Aug 07, 2012, 10:29 AM
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Just a bump for day shift to check out.
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