Bristol Laboratory (oz13327)


Bristol Laboratory (oz13327) by Bill Stroman 1980 - plan thumbnail

About this Plan

Bristol Type 92 Laboratory. Rubber indoor scale biplane model.

Quote: "Bristol Flying Laboratory, by Bill Stroman.

The author is well known for his good-flying models of strange and obscure aircraft of the past. This time it's a flying test stand! Don't be fooled by its appearance, though - it's a great flier.

Good Grief, what the heck is that? Was there really a real airplane like that? You sure build the weird ones. These are a few of the statements you will have to endure if you build the Bristol Laboratory. But when you wind it up and watch it fly, it's worth it, for this is really a good model. It's not hard to build or trim, and it sure is a crowd pleaser.

The full-sized plane was built as a flying test stand to check the cooling problems of the Jupiter engines. It had a square plywood fuselage to which one or two round fairings could be attached. One was three feet in diameter, the other five (I chose to make the three foot one - less frontal profile). The large wing gap was to avoid any turbulence on the fuselage during the tests. The wide track landing gear was to avoid any ground looping. One good thing about this plane is that it was never registered, therefore, no markings appear on the wing or fuselage. Just to balance that, the one bad thing about it is that there were only two photos ever taken of the plane. Oh well, one can't have every-thing!

Before we start on the model itself, let's discuss the material we are going to use. I have not indicated on the plans what weight of balsa to use, and this is important, If the model is to be flown indoors, it should have the lighest balsa one can get. Take a small, accurate scale with you to the model shop and weigh each piece until you find the lightest piece. This may get some laughs from the R/C crowd in the place, but it will insure a better flying model. The same goes for the tissue; I used Peck-Polymer white Japanese tissue on mine and it worked great, so be selective. By the way, if you can't get light balsa, send for the price list from Superior Balsa, they have great stuff.

Well now, let's get to building. I like to build the fuselage first, as all the other things must fit onto this. Make the frame on the side view. Be sure to include the post for the rubber peg and the 1/16 sheet insert at the rear. Remove, and make another just like it. Put the two frames over the top view, and put in the cross pieces. While you are doing this, be sure to have the sides square to the table; use a small square or any right-sided object to do this. After this has dried, glue in the insert at the rear as shown; also put the 1/16 sheet on top and bottom between section C and D.

Cut and fit the formers for the sides, top and bottom. By the way, do you have trouble getting the stringers straight from front to back? Here's a method I picked up from Jack McCracken. Cut the slots out on section A only. Then, cut slots in section F. Now lay a straightedge from A to F and draw a line at each slot. This will insure a straight stringer when the remaining slots are cut. Install the stringers now, doing one on each side at a time so as not to warp the frame..."

Bristol Laboratory, Model Builder, January 1980.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.


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

Bristol Laboratory (oz13327) by Bill Stroman 1980 - model pic

  • (oz13327)
    Bristol Laboratory
    by Bill Stroman
    from Model Builder
    January 1980 
    24in span
    Scale Rubber F/F Biplane
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 05/04/2021
    Filesize: 191KB
    Format: • PDFbitmap
    Credit*: Circlip, RFJ
    Downloads: 374

  • Bristol_Type_92 | help
    see Wikipedia | search Outerzone
    Test link:
    search RCLibrary 3views (opens in new window)

    ScaleType: This (oz13327) 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.

Bristol Laboratory (oz13327) by Bill Stroman 1980 - pic 003.jpg
Bristol Laboratory (oz13327) by Bill Stroman 1980 - pic 004.jpg

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

User comments

Hi Steve, hi Mary, the "Laboratory" was officially named "Bristol Type 92" and it has its own article on Wikipedia: Should make an ideal subject for my first self-constructed papermodel. Cheers,
Martin - 22/09/2021
Got it, thanks, have added new ScaleType and link now.
SteveWMD - 22/09/2021
Add a comment



Download File(s):
  • Bristol Laboratory (oz13327)
  • Plan File Filesize: 191KB Filename: Bristol_Laboratory_oz13327.pdf
  • Supplement Filesize: 2777KB Filename: Bristol_Laboratory_oz13327_article.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.