PHOTO: BONNIE SIMPERS
Tom Hallman’s Airco DH-2 (above left) awaits judging on top of its documentation. The DH-2 without the dummy rotary engine (above right)
PHOTOS: TOM HALLMAN
showing the motor and prop to advantage. DH-2 in flight (below left). Profile shot of Tom’s DH-2 (below right) shows the dummy radial and other details.
“I have made quite a few replacements in- cluding a PZL 24, Piper Cub, Hawker Cygnet, Bristol M1B, Westland PV4, Auster B4 Am- bulance Freighter and recently the DH-60M. They all have had a degree of success but none as consistent as the Tiger Moth. Two
years ago during a pre-Indoor Nationals trimming session two weeks before the event it hit the ceiling, fell to the floor (hard), broke the fuselage into three parts; so I repaired it and it flew without trimming and won the contest. I don’t think it owes me anything.
“The motor is a 5-gram 4.5 Kv Chinese outrunner geared 4.34:1. The battery is the
170 mAh 20C Fullriver Li-Po (2S). The timer is the one I sell and the ESC is from Robotbirds in the UK, but the Hobby King ones work just as well.
PHOTO: DEREK KNIGHT Derek Knight’s 26-inch span, 217-gram twin ducted fan Gloster Meteor record breaker. 44
“The weight of the setup that is in the picture is 28 grams, I didn’t try to make the motor mount very light as nose weight was needed and a fair amount could be saved by shortening the wires. I am convinced that the motor is far more useful geared for my type of model than the direct drive version.” The flawless motor system gave him three maxes. The KP timer controls both speed and time for two phases and features an auto- matic power ramp-down feature for phase 2. Doug Beardsworth’s 15-inch Curtis BF2C1 was built from Dave Diel’s plans for the Ya- hoo Free Flight Cook Up Group’s Golden Age Military CU back in the winter of 2006. Ini- tially rubber powered, the electric version is 3.5 grams lighter at 41 grams. Doug pur- chased his motor from Atomic Work Shop
http://www.atomicworkshop.co.uk. He thinks the Voodoo/Zombie is a great package for these 1⁄24 scale birds; it’s his new “favorite” power package. The VooDoo 25 is a 7mm core- less blue back “superslick” motor with a wind- ing resistance of 1.7 grams in a 4:1 gearbox swinging a GWS 0503 prop.
NOVEMBER 2012
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