James Wot (oz11322)

 

James Wot - plan thumbnail image

About this Plan

James Wot. Radio control powered glider. For geared Electroprop motor unit (Graupner 550?).

Quote: "72 inch span high performance powered glider for electric power and 3 function R/C. James Wot, by Robin James.

ELECTRIC FLIGHT deserves to be more popular (than it is). Perhaps this lack of attention is because the average club flyer is unaware of what it has to offer. The modeller arrives at the field without a large field box, half gallon of fuel, electric starter, etc, etc. He walks out to the field carrying only the transmitter and model. Switch on - the motor always starts first time - and away the plane goes. No need either to lay out a bungee, or find someone to tow.

A good performance is achieved by keeping the structural weight as low as possible, but with a moderate wing loading of 9-1/2 to 10 oz/sq ft. The prototype's structural weight is 12 oz and the all-up weight 2 lb 7 oz. An Eppler 385 section is used and proves to be very efficient on this tapered wing, resulting in a sinking speed only slightly faster than a good thermal soarer.

Construction. Fuselage: After cutting out the various sheet parts, the two fuselage sides are built up over the plan. Notethe use of 1/8 in spacers between the sheet parts as the two fuselage sides are built, a precaution which ensures that the sheet is flush to the outer faces of the 3/16 longerons and spacers. Fit the wing supports, F3, F4, and the servo tray, then work towards each end of the fuselage fitting the cross members, next add the 1/32 ply bottom.

It is at this stage that the motor, with its drive and propeller, is installed, also the servos, pushrods and motor switches. The air intake is supported by a strip of ply as shown on the plan. Add the remaining areas of sheeting and other details as shown on the plan. I always add a tube, made from drinking straws joined with sticky tape, to the fuselage structure, to take the receiver aerial.

On a slow flying model such as this, where the control surface loads are low, the control horns can be made from 1/16 ply and the rear ends of the pushrods from 2mm aluminium knitting needles. These are joined to the balsa pushrods by drilling a hole down the centres of the pushrod and epoxying in the needle after roughening the surface..."

James Wot, Radio Modeller, February 1980.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.

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

James Wot - completed model photo

Datafile:

004.jpg
004.jpg
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

James Who? A model not to sneeze at, lest it shatters! Easy to strengthen with little effort and added weight, though :-)
Miguel Morao - 07/07/2019
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, 2011-2019.

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.