About this Plan
Tiger (the Challenger). Free flight power model. Contest winner. From Air Trails Annual 1942.
Quote: "Speaking of women in aviation, this gas job, built by a girl, is the only beginner’s model we know of that is a contest winner. The Tiger, by Mary Louise Thomas.
Having won a class B motor, I was in the market for a plane to fit it. So I had my brother, HA Thomas, design me a simple, sturdy model and I built it, entered it in a contest and won first place in B Class. The ship also took first in Class B in our annual meet in Little Rock.
The model is quite conventional. Make a cardboard duplicate of the scale to facilitate enlarging the plans. The grid shown on the tail and wing tip will make them easy to enlarge. Hard balsa, pine or bass should be used for longerons, spars, wing edges, and softer balsa can be used for ribs, crosspieces, et cetera. The plywood pieces in the nose are reinforced below with pieces of 1/8 sheet on the inner sides. Veneer can be substituted for the sheet aluminum. Where the landing gear passes through the plywood, small plywood pieces should also be cemented on the inside as reinforcement. All ribs are cap-stripped above and below with 1/32 x 1/8 strips. The wing center section is covered with 1/32 sheet balsa.
The camouflage is easy to duplicate. Ivory is the background color, with gray-orange, gray-green and blue-black splashed in at random.
Test glide the model, moving the battery if necessary to balance. "
Update 04/06/2020: Added article from AT May 1941, thanks to RFJ. Note that in this article the title of Challenger is (confusingly) used throughout.
Supplementary file notes
Planfile includes article (AT Annual 1942).
Article (AT May 1941)
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
by HA Thomas
from Air Trails Annual
all formers complete :)
got article :)
Found online 13/05/2011 at:
Format: • PDFbitmap
Credit*: 50+AirYears, GTHunter
Do you have a photo you'd like to submit for this page? Then email firstname.lastname@example.org
User commentsThis is not a correction, but I wonder where the picture came from as I'm convinced that it's mine as it appears to be electric with an olympus gearbox. Is it covered in red nylon? I can only guess that the photo was taken at Middle Wallop in UK some years ago.
tonyshepherd - 22/07/2012
Add a comment
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2021.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.