Curtiss-Wright CW1 Junior (oz809)
About this Plan
Curtiss-Wright CW1 Junior. Scale free flight pusher model. For up to .1 cc power.
Quote: "THE DESIGNER stumbled upon his first Curtiss-Wright Junior quite by accident. While looking around the hangars at Porterville Airport for a Sopwith Pup replica, he came across a small collection of very well-kept Waco Biplanes. After taking several pictures of these, he saw in the back of the hangar a curious welded tube fuselage with a three cylinder engine mounted on top. A pair of wings were stuck somewhere in the rafters, also a little worse for wear. It wasn't until some time later that it was identified as a C-W Junior, Jack being more interested in the Sopwith Pup at the time.
Although quite a popular ultra-light aircraft in its time, only seventeen examples appear to remain registered today. In 1931, three hundred of these aircraft were made, powered by 45 hp three-cylinder, air-cooled radial engines.
This one-tenth scale model is a beautifully stable flyer - as it should be with such a high wing layout and ample tail surfaces! With the pusher arrangement the builder has two choices over the propulsion unit. Either the engine may be run in the usual way with a pusher propeller, or else the engine may be run in the reverse direction with a normal airscrew. Not all engines will run backwards in this fashion, but sideport engines such as the Mills .75 cc, and reed induction glow engines are equally happy whichever way round they are running.
The model has been designed to follow the full scale construction, except for the tailplane, which has extra diagonal ribs to give the required warp resistance. If you are interested in a true scale model, these diagonals can be omitted, but take care. As we are discussing the tail, let's start with that. Make a corrugated cardboard former for the leading edge, and mould four laminations of 1/8 x 1/32 strips to this contour. Leave this overnight to dry before adding the ribs and spars.
The wings can be made next. Pin down the lower spar, the leading edge and the notched trailing edge. Cut out the required number of ribs and sand to shape. It's easiest to make all the ribs together and then modify the root ribs to the revised shape later. Make the leading edge riblets. Cement all the ribs and riblets to the spars, then add the upper spar, and wing tips, together with all the gussets. Don't put on the plywood root ribs yet, these will be attached later..."
Supplementary file notes
Article pages, thanks to algy2.
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
Curtiss-Wright CW1 Junior
by Jack Headley
Scale IC F/F Parasol Pusher
all formers complete :)
got article :)
Found online 25/04/2011 at:
Format: • PDFbitmap
Credit*: aeromeddeler, algy2
Curtiss-Wright_Junior | help
see Wikipedia | search Outerzone
ScaleType: This (oz809) 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/Curtiss-Wright_Junior
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, 2011-2020.
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.