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Extra 300 EP ( 40.6 in. / 103 cm )

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Extra 300 EP model airplane plan

Extra 300 EP

Extra 300 EP

Extra 300 EP
Plan Vector.

RC Scale Sport Civil.
Wingspan 103cm.Lowwing.
Engine Electric.
Control 4 channels.
Designer Roger Hardie

Link to this page: https://aerofred.com/details.php?image_id=96505

Details: Full Details
ID: 96505
File Size: 105.6 KB
Type: Airplane
Class: Radio-Control
Use: Civilian
Motor: Electric-Powered
Wingspan: 40.6 in. / 103 cm
Designer: Roger Hardie
Listing Editor: hlsat
Added: 19/05/2016 07:44
Corrections? Contact hlsat
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Filetype: .pdfSoftware for .pdf files

Member Profile for hlsat

Electronic Engineer

I started the hobby in October 1973.
First engine Cox Baby .049
First Radio Control Futaba 27Mhz 3 channels.
First Radio Control Plane Minnie Mambo Sterling one channel.

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Plan Attributes: Edit Attributes
Plan ID:96505
Keywords:RC Scale Sport Civil Vector
Model Type:Airplane
Aircraft Use:Civilian
Wingspan: 40.6 in. / 103 cm
Wingspan Class:100cm-To-125cm (40in-To-50in)
Motor Type:Electric-Powered
Designer:Roger Hardie
Category:Full Size PDF Plans, Vectorial, Wood
Similar:Plans like Extra 300 EP
File Details:
Date:19/05/2016 07:44
File size:105.6 KB
File Details:
Date:19/05/2016 07:44
File size:105.6 KB

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3D Printed Parts
Order 3D Printed Parts for the Extra 300 EP

General Information

3D printing allow us to design not only complete airplane models but also parts to complete balsa, foam or even composite model airplanes.

Parts can be designed and printed to fit exactly a model you have or a model you plan to build, even if you are not building this model to the full size plan.

3D Printing, and 3D CAD allow us to create the actual parts to fit on our models but also allow us to create negative molds where we can make composite parts.

I´m adding this service to all the plan listings on the site knowing that not every part you imagine or need can be done, knowing this, jobs will be evaluated case by case and a price estimate will be given on request.

What can be done with 3D Printing:

  • Canopies
  • Cowls
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  • Landing Gears
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  • Servo Covers
  • Wings
  • Fuselages
  • Complete Models

Full Models, Wings or Fuselages

It is possible to design a complete model for you but keep in mind that this is a lengthy process, many hours are needed to design and test a fully 3D Printed model. The finished model cannot have the same internal structure of the wooden made counterpart because it wouldn´t be possible to print it, it would have to have a structure like the models you can see in the 3D Printed Kits section of the site.

From the outside they are very loyal to the plan but still they have to be printed in sections, typically to fit a 250X210X200 mm cube that is the printer maximum build volume.

3D Printed planes are also heavier than light balsa models, all built up and ready to fly, with an electric power system they are generally a little lighter than the same model if it were powered by a glow engine. Please have a look at the 3D Printed kits section to have an idea on this.


I will calculate a price upon request, please contact me here mentioning this PlanID: 96505 and the job you wish me to do.

Comments & Corrections
Do you have questions, comments or corrections about the Extra 300 EP? Your input will surely help others to build this model...

Build instructions JanSvast on 06/06/2019 08:35
Hi Roger!

Ive hot all the parts cut out, but im having problems putting it together. Do you happen to have aby instructions for it? Thanks!

Extra 300 EP hlsat on 06/06/2019 17:35
Quote from: JanSvast at 06/06/2019 08:35
Hi Roger!

Ive hot all the parts cut out, but im having problems putting it together. Do you happen to have aby instructions for it? Thanks!


I have not manual information for building.
Extra 300 plans Desthy on 26/04/2020 08:34
hi roger,
first of all, thanks for the wonderful plan as since i lost my extra 300 many years ago...i have been trying to look for plans tobuild another and your plan is a saviour. anyways, just questions and clarifications sir. do the wings have sheetings like in the c-channel and the trailing edge and aelerons? and if it does, what is the thickness? also, about the cowling, is it vacuum formed also? thanks and best regards!
Extra 300 EP hlsat on 26/04/2020 09:39
Hi friend.
I do not have more information on this model.
But you can see here https://www.foro-aeromodelismo.com/viewtopic.php?p=286748

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