Twin-boom speedster and motor glider running hard down the strip

Oct 29, 2026 Last reply: 8 hours ago 4 Replies
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Two airframes make up this project, and both are clearly built for speed. The motor glider has already been flown overhead at pace against a bright, cloud-dotted sky. The second machine is a twin with a centre fuselage pod and yellow flame artwork running down its long wings, and its signature move is a shallow, rapid run straight down the tarmac toward the camera.



The construction details repay a close look. The glider carries a polished metal spinner at the nose and swings a two-blade folding propeller, while the twin mounts its two engine nacelles within a pair of tail booms and rolls on tricycle gear. On the power side, the glider runs a 3548-1100 turning a 10x8, and the twin spins two 8x8 props, both setups on 6s. That is a healthy amount of thrust, in my view.



The stand-out detail for me is the hinge work: the twin's hinges have now been remade in carbon fibre. The maker reports flying frequent high-speed pull-ups on the glider without any trouble, but the twin is still working through its early flights, and how those new hinges fare at full clip on that airframe is not yet settled. One more tidbit: the battery on the glider sits beneath the yellow canopy.


The power side of this has my attention. Which motor and propeller pairing does the maker run on each airframe? My guess is the figures differ between the glider and the twin, and it would be good to see the actual numbers spelled out.

Moving the twin's hinges over to carbon fibre looks like a smart call to me. Printed plastic at a control hinge is the likeliest failure point once an airframe is pushed this hard, and the trade-off is a stiffer hinge line that could feel less forgiving in the air.

A variation worth trying: build a copy of one of these airframes in ASA Aero. A lighter, more forgiving filament could suit the long wings on the twin, and it might make any heavy arrivals less expensive than they would be on stiffer material.

That one has been answered. The glider turns a 10x8 prop on a 3548-1100 motor, while the twin runs a pair of 8x8 props, and both setups are fed by 6s batteries. Plenty of headroom for this sort of flying, in my opinion.

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