Millie (oz15013)


Millie (oz15013) by David Boddington 2009 - plan thumbnail

About this Plan

Millie. Radio control (or free flight) sport biplane model. Wingspan 31 in, for 0.75 to 1 cc engines. All-sheet design using a Jedelsky-style wing.

Quote: "This little biplane is a quick build and won't take up much of your precious flying/ gardening/TV watching, or drinking, time. Inspired by wanting a sports RC model to be powered by my newly acquired Mills .75 replica, and as a sister-ship to the Twinkle (oz11643) free flight design, 'Millie' is a biplane suitable for small field flying. It is small enough to fit in the boot of your car assembled.

Before you commence building, take a couple of sets of photocopies of the plans, one reversed to give you the opposite wing panels and you will then be able to spray mount the parts direct onto the wood. If you don't have facilities for copying the drawings, you will have to be careful with the order of construction - the wings and tailplane should be built before the front section of the fuselage can be joined to the rear.

Which Wing? I actually built two sets of wings, one has a simple curved plate construction, built over the ribs, with the lower part of the ribs being planed and sanded away after construction, allowing the covering material to lie flat on the underside of the wing. However, for general flying with rougher grass areas, I would recommend the Jedelsky wing, which features 3/16 leading edge and 3/32 rear wing sheeting.

Pin the ribs in position over the plan - angling the root rib - and then glue the sheeting in position. The leading edged can be pre-profiled, with only a final sanding of the joint between the front and rear sheeting being necessary. Join the wing panels popping up the outer ribs to give the correct dihedral and, when the glue has dried, the centre joint should be reinforced with a 2 inch wide gauze bandage and epoxy. All that remains is to trim the leading and trailing edges of the ribs.

With both methods of wing construction I suggest that the sheets are given coats of lightweight filler on both sides and sanded smooth, followed by sanding sealer dope. It is much easier to carry out the sanding at this stage, rather than waiting until the ribs are fitted.

Tail time: All that is required for the tail surfaces is to round the leading edges, taper the trailing edges (a square edge to control surface trailing edges gives better control than a rounded edge) filler, sealer and dope as before. I used my favourite closed loop method of linkage for the rudder and a lightweight control snake for the elevator. Position the horns accordingly, no plan view of the fuselage is shown, so work out the elevator linkage route. Hinging is according to taste, I still prefer the 'old-fashioned' thread hinging method as it is lightweight and gives free movement.

Body Beautiful: Cut out two fuselage sides from 1/16 sheet - you will need to join a 4 in sheet for the full depth - and locate and glue the doublers and reinforcing strips in position on each side - don't forget they're handed! Note that the doublers automatically locate the formers, although the nose requires a further tripler to position the 3/8 sq beech engine bearers. Glue the bearers to the sides, the spacing are correct for the Mills .75, so you may need to make adjustments for other engines, drill the mounting holes to provide about 2-1/2 degrees of right thrust..."

Direct submission to Outerzone.

Millie from R/C Model Flyer, January 2009.

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

Millie (oz15013) by David Boddington 2009 - model pic

  • (oz15013)
    by David Boddington
    from RC Model Flyer
    January 2009 
    31in span
    IC F/F R/C Biplane Cabin
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 19/12/2023
    Filesize: 406KB
    Format: • PDFbitmap
    Credit*: Circlip, RFJ
    Downloads: 435

Millie (oz15013) by David Boddington 2009 - pic 003.jpg
Millie (oz15013) by David Boddington 2009 - pic 004.jpg
Millie (oz15013) by David Boddington 2009 - pic 005.jpg
Millie (oz15013) by David Boddington 2009 - pic 006.jpg

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

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, 2011-2024.

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.