Dirty Birdy 40 (oz10468)


Dirty Birdy 40 (oz10468) by Joe Bridi 1979 - plan thumbnail

About this Plan

Dirty Birdy 40. Radio control pattern ship, for 40 power. Wingspan 58 in, wing area 565 sq in.

Quote: "The Dirty Birdy 40 is a new fun fly and pattern ship, designed by Joe Bridi in the image of the contest winning Dirty Birdy 60 (oz4915). Although the Dirty Birdy 40 really moves out with a hot .40 up front, it's a gentle and rock steady plane in flight. Response to the control surfaces is smooth. A minimum of surface deflection is all that's necessary for it to perform as you'd want it to. As a result, the plane is reliable and predictable; one you'll really enjoy flying.

Our building sequence begins with the fuselage. Because of the flat fuselage top block, the fuselage is built in typical Bridi fashion; upside down. Then the stab, elevator, fin and rudder are built. Finally, the wing panels are assembled, the wing halves joined..."

Direct submission to Outerzone.

Supplementary file notes

Instructions, 14 pages.
Parts list, 3 pages.
Ribs, 3 pages.


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

Dirty Birdy 40 (oz10468) by Joe Bridi 1979 - model pic

  • (oz10468)
    Dirty Birdy 40
    by Joe Bridi
    from Bridi Hobby
    58in span
    IC R/C LowWing Kit
    clean :)
    formers unchecked
  • Submitted: 19/09/2018
    Filesize: 746KB
    Format: • PDFbitmap
    Credit*: JimPurcha
    Downloads: 2217

Dirty Birdy 40 (oz10468) by Joe Bridi 1979 - pic 003.jpg
Dirty Birdy 40 (oz10468) by Joe Bridi 1979 - pic 004.jpg
Dirty Birdy 40 (oz10468) by Joe Bridi 1979 - pic 005.jpg

Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk

User comments

Hi Steve, I recently built this as an electric conversion from a Balsaworkbench short kit, and you might like to add it to the photo database for your listing [main pic, 005].
Power is a Badass 3520-650kv on 5Ah/5S lipoly and APC 11 x8.5 prop. All up weight is 86oz for a wing loading of 22.4oz sq/ft.
Bob Moulder - 12/11/2023
Add a comment



Download File(s):
  • Dirty Birdy 40 (oz10468)
  • Plan File Filesize: 746KB Filename: Dirty_Birdy_40_oz10468.pdf
  • Supplement Filesize: 2361KB Filename: Dirty_Birdy_40_oz10468_instructions.pdf
  • Supplement Filesize: 30KB Filename: Dirty_Birdy_40_oz10468_parts_list.pdf
  • Supplement Filesize: 159KB Filename: Dirty_Birdy_40_oz10468_ribs.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.