Pulex GM (oz15250)

 

Pulex GM (oz15250) by OFW Fisher 1993 - plan thumbnail

About this Plan

Pulex GM. Free flight sport model for rubber power.

Quote: "An interesting little design with a good pedigree. Pulex GM, by Peter Fisher.

Introduction & development:The Pulex GM is named from Pulex, which is Latin for a flea and GM, which stands for 'Garden Model'. It has been specially designed for sports free-flight in very limited areas and more specifically domestic gardens. Ifs compact dimensions and a wing span of only 20 in, means it can easily be accommodated in a standard carrying box, well below the maximum size for transit, as cabin luggage, by most airlines.

The Pulex GM has been developed from the well known Performance Kit's Dynos (oz14177) low-wing rubber model kit. It is robust, very stable and possessed of considerable elegance in the air. It has been designed to have a low rate of climb, slow flying speed and flat glide, ideal for limited areas.

Construction: Cover the plan with wax paper for protection. Select medium and soft balsa; sandpaper liberally. Build the fuselage sides over each other; then assemble over the plan view, starting with the parallel section. Check for rectangular section, using a set-square. Laminate the nose-block and drill for the thrust button, before shaping the nose-block to final section, build the wings over the plan and then assemble over the centre section.

Take care to cant the root ribs 'R' using the template shown; this will ensure a dihedral of 1.75 in at each wing tip. Use very light weight 1 in dia wheels. The prototype was covered with Lightweight Modelspan and given one coat of clear dope. The centre of gravity was 1.5/8 in forward of the wing TE. Make up a single loop of 1/8 x 1/ 24 x 14 inch rubber and lubricate. This gives ideal garden performance.

Flying: Test glide to achieve a long flat glide, check the prop is free-wheeling correctly. The prototype used an Inkfish 5.7 in dia white nylon prop and button. Pack the LE of the tailplane if model stalls and the TE if it dives. (Opening the location slot as required.) For maximum performance the motor can be stretch-wound; but for normal flying, and applying turns by hand, a duration of about 22 secs is adequate for most gardens and can provide some very pleasurable and elegant flights.

Some skill is required to trim Pulex to accurately circumvent trees and bushes and ensure a safe-landing on the lawn! A typical flight here involves accurately flying between two branches of a copper beech, around an ornamental cherry tree and landing between a sycamore and a fuchsia hedge an a strip of lawn! Altitude is regulated to a maximum of perhaps 18 feet, and because airspeed is so low, encounters with branches do not cause damage. Happy flying. "

Direct submission to Outerzone.

Quote: "Hi Mary, Please see attached a plan and article, from Aeromodeller, by the late O.F.W. (Peter) Fisher, from Performance Kits for Outerzone. All the best,
Mark Robinson"

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

Pulex GM (oz15250) by OFW Fisher 1993 - model pic

Datafile:
  • (oz15250)
    Pulex GM
    by OFW Fisher
    from Aeromodeller, Performance Kits
    July 1993 
    20in span
    Rubber F/F LowWing
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 16/04/2024
    Filesize: 211KB
    Format: • PDFbitmap
    Credit*: MarkRobinson
    Downloads: 249

Pulex GM (oz15250) by OFW Fisher 1993 - 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, 2011-2024.

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.