About this Plan
U2. Control line stunt model.
Quote: "54 inch span fully aerobatic controliner for 5 to 8 cc engines. Already a winner in its first season. U-2, by Frank Warburton.
THIS MODEL WAS built with the specific idea of producing a new and more realistic look in stunt models, while retaining good handling characteristics. The novel UC has been well tested and gives perfect and very positive take-offs and landings. Wing tip fins were added at a later date, and were found to give steady pull-out throughout all manoeuvres as well as adding realism.
The U-2 employs normal constructional methods and should offer no difficulties to the average builder. The nose is slightly longer than usual enabling very smooth manoeuvres and the fairly high aspect ratio wing gives small turning radius and consequently good tri-angles and hourglasses.
The wing is commenced by cutting the ribs from soft 1/16 balsa by the sandwich method. For this purpose 1/8 ply templates of R1 and R14 are cut. 14 rib blanks are then sandwiched between the two templates and sanded to shape. Remember that on the starboard panel, R14 will not be required. The mainspar slots are cut with a razor saw. Note: the holes for the back lead-out must be angled up, and those for the front, down. The T/E is spliced and pinned to the board suitably packed. The mainspar is butt-joined and the ribs slotted on it - do not glue yet. Cement ribs to TE and add LE, followed by top TE piece. Remove wing from board and add TE cap, bell-crank platform and assembly complete with push-rod and lead-out wires. Cement LE and CS sheet in place. Pack 1 ounce tip weight in starboard wing. The ribs are now cemented to main spar. Cap the ribs with 1/16 x 1/4 in soft strips. Hinge 1/4 in sheet flaps and connect both pushrods.
Cut medium 1/8 sheet fuselage sides and cement 1 mm ply doublers to inside faces. Carve away section under wing and save for later. Drill engine bearers with 2 degrees offset and pre-cement to F2 and F3 after bolting UC to F3. Pre-cement sides to this assembly and fit tank on level with needle valve. Cement F5, F6 and F8 in place.
At this stage the fuselage is firmly cemented to the wing, checking for zero incidence, and the tail brought together by F16, hold with rubber bands until dry. Slide F12-15 down pushrod and connect tailplane to pushrod. The tailplane is cut from soft 1/2 in sheet, with 1/16 ribs added. Slide the tailplane back and forth to achieve neutral flap and elevator, then cement to fuselage. Add tail cone and remaining formers, replace cutaway section under wing. Then plank top and bottom with soft 3/32 strips, after tail-wheel, sewn with fusewire to 1/8 ply former, has been cemented against F15.
Cement on nose block, slotted for F2 and F3 and hollow out for cockpit. The cowl is made from 1/2 in and 3/16 sheet and carved to shape. Build fin on plan, sand to section and cement into position. Push protective, piano-wire cockpit hoop (crash arch) into nose block add pilot and cockpit details, etc. and Evo-Stik canopy into place, follow by alluminium pilots windshield frame with celluloid on its inside, to the canopy.
Give the whole model two coats of sanding sealer and sand smooth, cover the fuselage with lightweight tissue and apply sanding sealer until smooth gloss finish results.
Heavy weight tissue is recommended for wing, tail and fin covering, silk is rather heavy to work with on this model. Give three coats of clear dope and three of final colour, wet sanding between each. Finish with two coats of fuel proofer and wax polish.
Balance at indicated position. The original weighed 38 ounces, but up to 44 ounces is tolerable - remember the lighter the better! Many top-line fliers have flown the prototypes and expressed their satisfaction at its ability to get through all manoeuvres - in fact they all liked it very much - how about you having a try?"
U2, Aeromodeller, August 1961.
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
Lockheed_U-2 | help
see Wikipedia | search Outerzone
ScaleType: This (oz13324) 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 https://en.wikipedia.org/wiki/Lockheed_U-2
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.
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* 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.
© Outerzone, 2011-2021.
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.