Cessna 336 Skymaster (oz5354)

 

Cessna 336 Skymaster (oz5354) by Robert Welch from American Modeler 1964 - plan thumbnail

About this Plan

Cessna 336 Skymaster. Control line scale model.

Quote: "One of the most interesting businessplane designs of recent years, the Cessna 336 Skymaster is a marvelous subject for twin-engined models. Unlike other twins, its 'center-line thrust concept', with push-pull powerplants, permits a minimum of upsetting forces after one engine conks out. F/F and R/C fans alike should be enthusiastic over Cessna's center line thrust concept, as CLTC craft continue on course relatively undisturbed after one engine has quit.

After ribs and spars are cut out, assemble wing spar with aid of spar braces. Dihedral should be as shown. Ribs are cemented to spar first, then 1/4 sq balsa LE and 1/8 sq ply TE. If a power saw is not available for stripping up 1/2 ply for TE, then 1/8 pine or spruce will do the job. Flap control horns should be formed and installed at this stage (before top sheet covering). Aluminum straps about 1/16 x 1/8 are used, being wrapped around the control horns and TE. Cover the bottom of the wing with 3/32 sheet (be sure this is done before mounting bell-crank or flap-actuating 'L'-crank.

After bellcrank and L-crank are installed, make inclined lead-out holes in wing bottom. Cement 1/8 in OD tubing in these holes to minimize wear due to lead-out wire movement. To make an easy job of mounting the booms and stabilizer, make push rod 8 in long initially. When tail booms and stabilizer are in place, remaining push rod length is soldered on. Secure front end of push rod to bellcrank with washer soldered to push rod end. Check actuation of bellcrank for smoothness, then plank top of wing, add tip blocks, ailerons and flaps.

Cut four blanks for tail booms from 1/4 in sheet, working as accurately as you can in cutting the wing opening. Careless work at this stage can result in one boom drooping more than the other - nothing looks worse in a twin-boomed job! Boom cores of 1/8 sheet (2) are needed, plus a pair of rudder supports cut from 1/8 ply. Note that clearance for the push rod is cut out of the inboard support. Flyers who prefer the standard counter-clockwise flying direction will want to hollow out the left boom for push rod clearance.

Only the outboard 1/4 in blank is cemented to the 1/8 core of the left tail boom - access is needed for sub-sequent push rod installation. In laminating the right boom, do not forget rudder support. It is very hard to install in the assembled tail boom. Carve and sand tail boom as per section..."

Quote: "This is a scale model of the first version of the Cessna 336 Skymaster manufactured by Cessna between 1963 and 1965. It had fixed gear and poor performance. It was replaced with the Cessna 337 Super Skymaster with retractable undercarriage and more streamlining. It was made until 1980. Robert Welch designed and made this beautiful control line scale copy of the 336 with two .15 Fox engines and way back in 1963. It won the Control line scale championship in the American AMA Nationals of that year. This model was published in American Modeler July-August 1964 issue. Who will be the first modeler to make a RC version to commemorate the fiftieth anniversary of its publication? Best wishes to all from Colombia, Eduardo".

Direct submission to Outerzone.

Update 18/07/2016: Article pages, text & pics added, thanks to RFJ.

Supplementary file notes

Article.

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

Cessna 336 Skymaster (oz5354) by Robert Welch from American Modeler 1964 - model pic

Datafile:
  • (oz5354)
    Cessna 336 Skymaster
    by Robert Welch
    from American Modeler
    July 1964 
    38in span
    Scale IC C/L Multi
    all formers complete :)
    got article :)
  • Submitted: 23/02/2014
    Filesize: 652KB
    Format: • PDFbitmap
    Credit*: Edubarca

ScaleType:
  • Cessna_Skymaster | help
    see Wikipedia | search Outerzone


    ScaleType: This (oz5354) 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/Cessna_Skymaster
    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.

Cessna 336 Skymaster (oz5354) by Robert Welch from American Modeler 1964 - pic 003.jpg
003.jpg
Cessna 336 Skymaster (oz5354) by Robert Welch from American Modeler 1964 - pic 004.jpg
004.jpg
Cessna 336 Skymaster (oz5354) by Robert Welch from American Modeler 1964 - pic 005.jpg
005.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):
  • Cessna 336 Skymaster (oz5354)
  • Plan File Filesize: 652KB Filename: Cessna_336_Skymaster_CL_oz5354.pdf
  • Supplement Filesize: 2508KB Filename: Cessna_336_Skymaster_CL_oz5354_article.pdf
  • help with downloads
 

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, 2011-2020.

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.