Powerhouse - Free flight gas model, for Forster .99 power.
Quote: "This business of 'packing' power in ships has long been carried to extremes. Engines of a quarter - or even a third - horsepower have been built into tiny ships, giving them a startling climb, but seldom if ever does the glide match that stupendous rise under power.
We have always figured that, given enough power to obtain a good climb, a big ship had considerable advantage in the glide. We recall seeing a pilot and a mechanic (from an adjacent airport) standing near the starting line when we started the motor of the Powerhouse in a recent meet. The pilot turned to the mechanic and said, in a 'know-it-all' manner: "There's a big job... sloppy climb, no power."
He almost ate his words when the ship was launched. In twenty seconds the Powerhouse had gained tremendous altitude. When the motor cut out, a strong wind carried the ship off the field and despite an excellent flight we had no joy in our hearts for the plane was lost. We hired a Cub to look for the job from the air, but to no avail. Our only consolation was that, at last, we had developed a fast climbing large gas job, and as such we now present - The Powerhouse.
Just a brief history of the ship: In the first appearance of the Powerhouse, at Creedmore, L.I. on February 12th at a contest sponsored by the Metropolitan Model Airplane Council, the ship did 6:04 out-of-sight, and took first prize in the Class C group. Later it took first place in the Haaren High School Model Airplane Contest, doing 2:35 for the best flight of the day, despite a 30 m.p.h. wind. Equipped with floats the ship took first honors in the first annual Eastern States Gas Model Seaplane Contest on August 20 at Lake Hopatcong, N.J., averaging 1:07, establishing a new world's record for gas model seaplanes. In addition the ship has taken a number of other prizes in eastern contests. Four foot, five-foot and six-foot versions of the ship, powered with Class B and smaller Class C motors (Browns, Dennymites, etc.), have also made fine showings and won several prizes.
In the first place a big ship is more stable, responds to adjustments more easily, and is less inclined to be critical and cranky. A big ship has but one disadvantage... it's a trifle hard to transport. Otherwise, give us a big ship that can really take advantage of a thermal and make the most of any altitude it may get.
The Powerhouse represents a development in design, and as is the case with most models, it took almost a year before the design was finally perfected. In contest work we had always noted the failure of planes with large wing spans to obtain a sufficient altitude. Of course, once they did get 'up there' they performed beautifully, but the difficulty lay in the climb..."
Update 15/11/2014: Replaced this plan with a full size version, thanks to JJ. Here is a faithful full size plan for the original 84in Powerhouse, scaled up from the drawings as published in November 1939 MAN.
Scan of original drawings. Note this is not a full size plan, this is a scan of the magazine pages as originally printed in MAN Nov 1939.
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