Chubby (oz4930)
About this Plan
Chubby. Control line sport biplane model. DC Dart .5 diesel shown.
Quote: "A fully aerobatic biplane for .5 - .8 cc engines, specially designed for easy building by Vic Smeed.
THE ATTRACTION of a small model capable of stunt manoeuvres cannot be denied nor can the challenge that such a model offers design-wise. Quite the biggest problem is the relationship between engine weight, model weight, and power output.
Chubby represents one approach, leaning, if anything, towards the sturdy side but still capable of the simpler aerobatics - loops, etc - on a .5 cc diesel.
Construction is very simple and very quick. If you don't mind stripping 13 in lengths off, the whole model can be built from a sheet of medium soft 1/8 by 3 in balsa and a few square inches of 1/16 in ply, plus the hardware.
First cut two main fuselage frames, one from 1/8 in balsa and one from 1/16 in ply. Pin the balsa one over the plan and build the rest of the fuselage framework from 1/8 x 1/2 in. Cut a 5/16 in wide strip from the 1/8 in sheet for the piece over the lower wing mount and the front upright. A scrap 3/16 in wide will be needed immediately aft of the bell-crank.
The ply plate should be cut to fit the motor to be used. Mark the small binding holes, which should he drilled and the head filed off at one side of a 6 BA bolt. Slip a washer on the bolt, fit the bellcrank..."
Direct submission to Outerzone.
Supplementary file notes
Article.
Corrections?
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
Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk
User comments
No comments yet for this plan. Got something to say about this one?Add a comment
- Chubby (oz4930)
- Plan File Filesize: 158KB Filename: Chubby_13in_stunt_oz4930.pdf
- Supplement Filesize: 202KB Filename: Chubby_13in_stunt_oz4930_article.pdf
- help with downloads
Notes
* 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.
Scaling
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, 2011-2025.
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.