Overload (oz10810)


Overload - plan thumbnail image

About this Plan

Overload. Free flight power model.

Quote: "New Rule FAI Power Model. Overload, by J Baguley.

OVERLOAD is an appropriate name for this model designed as it is to the new FAI formula, which means it must weigh 26-1/2 oz. The construction follows usual practice and the instructions on the plan are more than adequate for the experienced builder to follow (this is not a beginner's model); however the following notes on trimming will be of assistance in getting those 'in the groove' flights.

Firstly, weigh the model to ascertain the amount of ballast needed to bring it to the FAI weight of 26-1/2 oz. Assemble the model and determine where the ballast should go to bring the CG on, or slightly in front of, the position shown on the plan, then install it in the pylon weight boxes, taking care to position it firmly.

Check that the tailplane incidence is correct in relation to the engine thrust line and test glide, adjusting the wing incidence and tail tilt to
give a glide with slight right turn. With a motor run of 10 sec and DT not much longer give a low powered flight. The model should climb slightly right, at 60 degrees attitude, and slip into a glide. If the model does not do this, get the glide correct by adjusting tail tilt and wing incidence before further increasing the power. Once these adjustments are made the power may be gradually increased, but if on higher power the model turns too tightly, cement a small piece of 1/16 sq to the left-hand side of the fin and balance the effect on the glide with more tail tilt.

If the model shows looping or left turning, or rolling tendencies, cement a small piece of in 1/16 sq to the right-hand side of the fin and balance this with decreased tail tilt for the glide.

The wing warps should be strictly adhered to as the whole trim is based upon the slight left rolling effect provided by the increased incidence of the right-hand inner panel. The glide should be directly comparable with that of an open power model and in correct trim the model should be capable of at least 33 min, that is, using a hot competition 2.5."

Overload, Model Aircraft, June 1958.

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

Overload - completed model photo

  • (oz10810)
    by Jim Baguley
    from Model Aircraft (ref:283)
    June 1958 
    64in span
    Tags: IC F/F Pylon
    all formers complete :)
    got article :)
  • Submitted: 08/01/2019
    Filesize: 746KB
    Format: • PDFbitmap
    Credit*: Circlip, RFJ


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



Download File(s):


* 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, 2011-2019.

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.