Sopwith Pup (oz6692)

 

Sopwith Pup (oz6692) by Joe Hankes from American Aircraft Modeler 1971 - plan thumbnail

About this Plan

Sopwith Pup. Scale model for single channel RC and .09 size engine.

Quote: "Fly it with small digital, Galloping Ghost, or go free flight! Any way, it flies slowly and looks real. Sopwith Pup, by Joe Hankes.

THE AIR WAR during WWI was waged on a month-to-month basis. From 1914 to 1918, an aircraft design was effective for about four months. A plane gradually built up to its peak of operation, stayed there for about four to six months, and then slowly declined into obsolescence.

In 1915, the German Fokkers, equipped with a machine gun which fired through the propeller, were knocking down Allied planes with ever-increasing regularity. A ship capable of combating them was desperately needed. The Sopwith Aircraft Co worked feverishly to replace their now-obsolete Sopwith 1-1/2 Strutter. Finally, in January 1916, the plane which was to become known as the Pup first flew. By February 6, 1916, acceptance papers were signed and production of this little jewel began.

The Pup, which spanned 26-1/2 ft, was a much smaller plane than the 1-1/2 Strutter. Using an 80-hp Le Rhone engine, its all-up weight was 787 lb. Later, performance was bettered with a 100-hp engine at only a slight increase in weight.

Early in March, the new planes started to reach the front. Pilots in the English Sector, who were the first to receive the Pups, were jubilant over their performance. They were easy to fly as compared to the Camel, which had bad spin characteristics. This little Pup could take off with a run of only 100 ft, and came in for a landing at only 30 mph.

The plane got its nickname from the pilots who considered the Sopwith 1-1/2 Strutter the Dad, and the new plane the Pup. The British brass thought that Pup was an undignified name and gave orders not to use it. But the order was never heeded.

The model of this jaunty and frisky little plane was designed with pulse proportional (Galloping Ghost) in mind. Wing loading comes to only 11.4 oz per sq ft, since the total weight is 24 oz; total wing area, 394 sq in. An Enya 09 RC engine does a respectable job of flying the plane in scale-like fashion.

The large control surfaces may cause some eye-popping at first, but only the inner holes on the Rand actuator and the outer holes on the control horns are used. Total throw is about a half an inch. Those who are brave can use full throw, put in a 15 engine, and get some real combat action.

The Pup is a fine fun flier. Its dimensions are not exact enough to win a scale contest but, when that tail lifts on the takeoff, and the ship gently lifts into the air, that's modeling at its best.

Construction. Fuselage: Cut out 2 parts of F5 from a firm grade of 1/8 sheet balsa. Lay out the remainder of the side view, using the balsa size indicated on the plan. Glue each joint well with white glue and let dry overnight. Make the other side view the same way.

Join the sides with the crossmembers. I usually sketch the top view on my building board and assemble the sides directly over it. Cut out F3, F4, and F5 and cement or glue to the fuselage. Next install the stringers. Cut out the firewall. For an 09 engine, 1/8 ply will do, but 3/16 ply is more versatile and can be used with the larger engine..."

Here is Joe Hankes Sopwith Pup from AAM magazine issue 06-71.

Direct submission to Outerzone.

Supplementary file notes

Article pages, text and pics.

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

Sopwith Pup (oz6692) by Joe Hankes from American Aircraft Modeler 1971 - model pic

Datafile:
  • (oz6692)
    Sopwith Pup
    by Joe Hankes
    from American Aircraft Modeler
    June 1971 
    34in span
    Scale IC R/C Biplane Military Fighter
    all formers complete :)
    got article :)
  • Submitted: 31/05/2015
    Filesize: 886KB
    Format: • PDFbitmap
    Credit*: theshadow

ScaleType:
  • Sopwith_Pup | help
    see Wikipedia | search Outerzone


    ScaleType: This (oz6692) 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.


    Notes:
    ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Sopwith_Pup
    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.

Sopwith Pup (oz6692) by Joe Hankes from American Aircraft Modeler 1971 - pic 003.jpg
003.jpg

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):
 

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, 2011-2021.

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.