Martin MO-1 (oz9283)


Martin MO-1 (oz9283) by Don Gerber 1969 - plan thumbnail

About this Plan

Martin MO-1. Control line model. Class I Navy Carrier, 1921 vintage.

Quote: "ONE of the most rewarding aspects of this hobby is the designing of a model and then following through with the building, perfecting, flying, and winning with this aircraft. I tremendously enjoy flying in competition and am always looking for something different, something original that I can call my own.

While going through the books in a library 400 miles from home, I found the first bit of information which led to the design of this model. The book 'Airplanes of the World 1940-1962' by Doug Rolfe and - of all people - Bill Winter showed a small drawing of the plane, and gave the information that the MO-1, designed in 1921 as a shipboard observation plane, was the first all-metal plane designed and built in the United States. The word 'shipboard' was all the incentive that I needed.

During the summer of 1967 I corresponded with the Martin Marietta Corp. and got a photograph of the real plane and a good three-view drawing. Invaluable was the letter from Martin Marietta verifying the MO-1 as being carrier-based: 'In response to your request for verification of the use of the early Martin-built MO-1, our records indicate that this plane was carrier-based along with the bombing and torpedo squadrons of the US Navy in 1924, but was classed as a light-weight scout monoplane.'

With this information I drew the first set of crude plans. Later that fall I started corresponding with Mr Don Gerber of Laureldale Pa, who was the current class I record holder. Since he was interested in the model, I sent him a copy of the information that I had, and a rough copy of the plans I had drawn. That winter he redrew the plans in detail, developed construction techniques for both class I and class II versions of the MO-1. He and his son (John) built several of the planes of both classes.

The contest record of their MO-1’s during the summer of 1968 is phenomenal. They had a total of six first-places, five second-places and one third-place, and these include the AMA class I and class II junior records and a first-place win in junior class I navy carrier at the 1968 Olathe Nats for John Gerber. They had done all this, and I hadn't even started construction on mine.

I should make it clear that this is a joint article presented by both myself and Don Gerber, and that Don should receive the lion's share of the credit for developing and testing the model.

If this plane doesn’t convert a few of you rat race flyers to Navy Carrier, then you just can't be converted, because it sure has the looks of a good, clean rat racer. The construction is similar too, with the exception of the metal pan used on most rats today.

Start construction with the solid wing by gluing the redwood leading edge to the balsa plank and working down the wing with a razor plane to the airfoil shape shown in the fuselage side view and the wing tip section. Make sure the wing center section bottom is flat, out to the point, where the leading and trailing edges begin to taper, and then works to a symmetrical section at the tip. Don’t cut out the ailerons until the wing has been completely shaped and sanded. Notice I said 'ailerons' and not 'flaps'.
The MO-1 had no flaps, so the ailerons are used as ailerons during low speed to bank the model toward the outside of the circle..."

Scan from dfritzke, cleanup by rchopper56.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to hlsat, from scans by Pit.


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Martin MO-1 (oz9283) by Don Gerber 1969 - model pic

  • (oz9283)
    Martin MO-1
    by Don Gerber
    from American Aircraft Modeler
    August 1969 
    28in span
    Scale IC C/L Military
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 01/10/2017
    Filesize: 263KB
    Format: • PDFbitmap
    Credit*: dfritzke, rchopper56, hlsat
    Downloads: 543

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Martin MO-1 (oz9283) by Don Gerber 1969 - pic 003.jpg
Martin MO-1 (oz9283) by Don Gerber 1969 - pic 004.jpg

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