Head_Bipe

Planes

B-25 Mitchell
1/48 Scale
8 Channels
P-51 Mustang
1/48 Scale
6 Channels
Shark
2.65", 0.495 gram
Mono-plane
Martin's Midge
3.2", 0.98 gram
Mono-plane
Mosquito
4", 1.3 gram
Mono-plane

May 25, 2005

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.

Tripe3 Pictures

Tripe3 & Pencil

Ready to launch

Tripe 3 - 3"

Wing being braced

Tripe3 Rudder

With Plantraco 900 MHz Rx

Tripe3 Videos

Coming Soon

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

Tripe3 Plans
Plans in PDF format
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