Jabberwock (oz2978)

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Jabberwock (oz2978) by Wally Simmers 1939 - plan thumbnail

About this Plan

Jabberwock. Class C cabin rubber model, by Midwest Models. Wingspan 31-1/2 in, projected area 135 in sq.

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Jabberwock (oz2978) by Wally Simmers 1939 - model pic

Datafile:

Jabberwock (oz2978) by Wally Simmers 1939 - pic 003.jpg
003.jpg

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User comments

Please can you tell me the position of the center of gravity. Best regards
Richard - 12/02/2019
Not sure if Wally Simmers ever showed on his rubber powered designs the Center of Gravity location. My interpretation is that you need to test for the location by simple hand tossing (gliding), adjusting to nose weight until you achieve a smooth glide. Usually somewhere between 1/3 to 1/2 the wing chord for rubber powered models.
rchopper56 - 13/02/2019
Considering the large and lifting tail I suggest not less than CG position at 60% of wing cord - also, check the Double Jabberwock (oz8000), which has CG position indicated on the plan.
Pit - 13/02/2019
The Midwest Kit plansfor the Jabberwock II show a CG range on the plans between 24.5 and 28.2mm from the back face of the nose-block at the fuselage front.
(Nose block dimensions may vary)
Peter Becker - 24/01/2023
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