Gee Bee Model Z (oz11731)


Gee Bee Model Z (oz11731) by Henry Haffke 1984 - plan thumbnail

About this Plan

Gee Bee Super Sportster Model Z. Radio control scale model. Wingspan 71.5 in, for Webra .90 engine.

Scale is 1/4.

Note this is the plan scan as posted by Marcdeklerk on AF site (see credit link) but this version here has been cleaned up to remove all the background noise. The file size is now smaller, and it's much easier to read.

Update 20/11/2019: Added article, thanks to RFJ.

Quote: "THE BACKGROUND and history of the full-size and my model Super Sportsters were presented last month. Now, we're ready for construction. Before beginning, remember one very important fact: the model should be kept as light as possible. With its short moments, you could find it very tricky to fly if the wing loading gets too high. At 12-1/2 lb, it's a very stable flier - very positive on the controls, without any over-sensitivity. With care, your model can be built even lighter than my prototype. The bulky fuselage has a lot of material in it, so use lightweight wood where practical. This can add up to a substantial weight savings when the model is finished. Remember that weight and torque are the two big enemies of this aircraft.

Fuselage: Cut the sides from 1/8 x 6 inch balsa sheet, or you can edge-glue two 3 in sheets together. Cut the forward doublers from 1/8 ply, and laminate these to the sides. In the bottom view, note that the ply doublers extend 1/4 in forward of the balsa sides and that they are on the out-side of the structure. When this has dried, the firewall can be epoxied in place. The full-ply bulkhead, F-1, is also glued in place at this time. Clamp the tail end together, and make sure that everything is square while the glue sets. Triangle stock can be used behind the firewall to further strengthen this joint.

When the glue has properly cured, the remaining fuselage formers can be added, making sure that they are all square to the structure. Add the top, center stringer to the forward section of the fuselage. Also add the top turtledeck stringer. The fuselage aft end can be glued using a wedge to fit the joint. Add the side stringer from F-3 to the aft end. The 1/2 in balsa F-1 formers are now added to the forward end. Make sure that these are clamped tightly to the ply F-1 until the glue dries.

At this time the engine should be mounted to the firewall and the fuel tank can be mounted where shown on the drawings. I would strongly suggest that you use a .90 glow engine as I did. The engine should be mounted on an Edson mount, using an Edson thrust wedge behind it..."

Update 18/12/2019: Added first part of the 2 part article, thanks to theshadow.

Supplementary file notes

Article 1.
Article 2.


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

Gee Bee Model Z (oz11731) by Henry Haffke 1984 - model pic


  • Gee_Bee_Model_Z | help
    see Wikipedia | search Outerzone
    Test link:
    search RCLibrary 3views (opens in new window)

    ScaleType: This (oz11731) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

    If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.

    ScaleType is formed from the last part of the Wikipedia page address, which here is
    Wikipedia page addresses may well change over time.
    For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
    Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.

Gee Bee Model Z (oz11731) by Henry Haffke 1984 - pic 003.jpg
Gee Bee Model Z (oz11731) by Henry Haffke 1984 - pic 004.jpg
Gee Bee Model Z (oz11731) by Henry Haffke 1984 - pic 005.jpg
Gee Bee Model Z (oz11731) by Henry Haffke 1984 - pic 006.jpg

Do you have a photo you'd like to submit for this page? Then email

User comments

Hi Steve and Mary, Pages 2 to 12 of the recently added Part 1 of the article for this plan are unreadable, at least when I download it. Anyone else having the same issue? Best regards,
Skippy - 20/12/2019
I have the same problem with it.
Paul - 02/01/2020
On page two the top view of of the fuzz it shows that there is a seventh rear former but it does not show it on any of the plans?? Just wondered I am half way through the build and just woundered thanks Tim
Tim allanson - 30/01/2022
I see it Tim... probably an error. Not unusual.
RC Yeager - 31/01/2022
Add a comment



Download File(s):
  • Gee Bee Model Z (oz11731)
  • Plan File Filesize: 703KB Filename: Gee_Bee_Model_Z_72in_oz11731.pdf
  • Supplement Filesize: 6534KB Filename: Gee_Bee_Model_Z_72in_oz11731_article_1.pdf
  • Supplement Filesize: 6764KB Filename: Gee_Bee_Model_Z_72in_oz11731_article_2.pdf
  • help with downloads


* 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.


Terms of Use

© Outerzone, 2011-2024.

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.