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| Here's Tripe3, a 2.9" span half-scale version of my Tripe. I have flown this with the Leichty receiver and with the Plantraco 900 MHz receiver. I found it was very unstable with a 2"x1.5" prop. Not surprising when you think of it - would you put a 20" prop on a 30" wingspan plane? Reducing the prop to 1.25" made it much more stable, but then I had to go up to the 10 ohm 4mm pager to get enough power. Consequently it doesn't fly nearly as long as Bipe4, which uses the 28 ohm motor. I must try it with a better small prop design with a lower pitch. Looks really cool in the air.
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| Tripe3 Pictures |
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Tripe3 & Pencil
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Ready to launch
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Tripe 3 - 3"
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Wing being braced
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Tripe3 Rudder
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With Plantraco 900 MHz Rx
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Tripe3 Specifications
| Wingspan |
2.9" (7.5 cm) [3" flat] |
| Chord |
0.85" (2.2 cm) |
| Wing Area |
7.3 sq.in (47 sq.cm) |
| Weight |
0.095 oz (2.7 grams) |
| Wing Loading |
1.87 oz/sq.ft (5.77 g/sq.dm) |
| Motor |
MK04-10, 4mm, 10 ohms |
| Gears |
6:1 Didel MOD 0.2, homebrew gearbox with 2 ball bearings |
| Propellor |
1.25" x 1.5" (32mm x 38mm) homemade carbon on hand-carved blank |
| Battery |
20mAH LiPoly |
| Radio |
Leichty Micro 3 Channel, 27MHz |
| Antenna |
4" Litz wire |
| Actuators |
Homemade 3mm OD, 51awg, 200 ohms, 1/16"x1/32" N45 Neodymium magnet, 35 mg |
| Construction |
Carbon Rod, mainly 0.012" (0.3 mm) and foodwrap covering (Reynolds Wrap) |
| Control |
Rudder, Elevator, Throttle |
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| Tripe3 Plans |
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| Plans in PDF format |
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Adobe PDF reader can be downloaded free from |
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