National Free Flight Society

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  1. Nelson Glow Plugs
  2. Free Flight Quarterly #79 has appeared
  3. Thermiksense 1/2021

Nelson Glow Plugs

From: Walt Ghio
I will have Nelson glow plugs for sale at the San Valeer’s contest this coming weekend at Lost Hills.  Due to an increase in the helical filament wire that is used in the Nelson glow plug the cost for each glow plug is now $8 each.  Also, I will have fuel tubing and bladder material along with Nelson / TD heads .  All items are from Doug Galbreath who has asked me to be his salesperson.

Walt Ghio


Free Flight Quarterly #79 has appeared

From:Sergio Montes

Free Flight Quarterly#79 for April 2021 has appeared. It  has, as usual, a wide range of articles.

Gerhard Woebbeking  has two comprehensive articles in this edition on the F1E tailplane, its role on stability, construction and suitable airfoils,

Adrian Duncan covers in detail the story and performance of a little known and excellent Russian Diesel engine, Dave Hipperson begins a series on Slow Open Power models, and much more.

You can see the table of contents, summary of articles and magazine cover on our website:

Sergio Montes

Ed, Free Flight Quarterly


Thermiksense 1/2021

From:Bernhard Schwendemann

Thermiksense 1/2021

From:Bernhard Schwendemann
The first issue of 2021 of the German Free Flight Magazine “Thermiksense”
was just coming from the printers shop.
For the full content please see here:

On the 64 pages we have e.g.:
F1S Pulsar by Urs Schaller, a detailed report about the development and how
to built
F1E with the aid of CAD / CAM / 3D by Anton Frieser and Bernhard Pach
F1E with LDA by Andreas Tschanz
Vacuum system for building wings by Dieter Siebenmann
Championship F1ABC in Spain 1981 by Wolfgang Gerlach

Or some more general info in English:

Bernhard Schwendemann



From: Martin Dilly

Despite Covid and thanks to Zoom, the Free Flight Forum took place in November and the 2021 Free Flight Forum Report is now available. It covers a wide range of topics to inform, challenge and inspire you, whatever your free-flight interest.

Indoor Duration – A Challenge to Conventional Design – Tony Hebb; Coupe in a Box – Gavin Manion; Building Other People’s Mistakes – Stuart Darmon; The Models of Ray Monks – Simon Dixon;Simulated 3D Flight Dynamics – An Approach to Gain Insight for Trimming and Aircraft Development – Peter Martin; Building During Lock-down – Phil Ball; Tame Your F1B and Related Thoughts – Mike Woodhouse; What Next for a Lady Flyer – Sue Johnson; F3 RES – RC for the Aging Free Flighter – Andy Sephton; From Wichita to Robin III – Mike Fantham; Further Thoughts on Carbon-Skinned Wings for F1A – Stuart Darmon; Geo Fencing andElectronic Stability – John Emmett.

The UK price is £13.00 including postage; to Europe it’s £16 and everywhere else £20. Sales of the Forum Reports help to defray the heavy expenses of those representing Great Britain at World and European Free-Flight Championships. Cheques should be payable to ‘BMFA F/F Team Support Fund’ in pounds sterling, drawn on a bank with a UK branch; you may also order by credit card, which is a lot easier (and cheaper).

Copies are available from: Martin Dilly, 20, Links Road, West Wickham, Kent, BR4 OQW or by phone to: (44) + (0)20-8777-5533, or by e-mail to