Respect the red postage stamp backplate reedie!

Just tested this afternoon one of my old-stock red postage stamp backplate reedies in the nose of the Quickie 100 plane, with its home-made exhaust throttle ....(the thin wall cylinder has a bottom rim that does not allow the use of the conventional throttle rings sold by Bernie and Matt...so I have devised one).



A lonely tester, I held the smartphone in my right hand and the plane in the left, while moving the throttle stick of the radio with my..... toe   so the camera movement is hilarious...(This may raise eyebrows of strict and consolidated modelers , but life is short, why wait for a helper?).

Noteworthy is the top speed at near 20.5k with a 5x3 COX prop with safety tip, and the lowest speed near 9k. (These numbers are the results of audio-taching the video). The rattling sound in idle comes from the thin wheels on the piano wire landing gear...

Other than the Galbreath head and Nelson plug (and the flats I filed on the top fin), the engine is all old stock COX 290. Fuel is my home brew 60/20/20 all castor..




This little critter has more power than a stock Black Widow that was tested to turn a somewhat larger, 5 1/2 x3 prop well below 20k as reported in a 1974 article: http://www.sceptreflight.com/Model%20Engine%20Tests/Cox%20Black%20Widow.html