Wittman Tailwinds

For a while I made something of a habit of building Wittman Tailwinds.  In fact I've made 5 (to date!).  Steve Wittman's classic design makes a good model and the variously scaled and modified variants of the Moorhouse Peanut plan generally did OK in competitions, culminating in a 3rd place at the 2008 Outdoor Nationals at Barkston Heath. (Thanks to Mike Stuart for supplying the original plan!

Diesel Powered Tailwind at Barkston in 2008. Achieved very high flight scores and placed 3rd overall. 

Starting the PAW 55 at Barkston

At the Dreaming Spires - not flying very well at this point but it does show the model in the air.

CO2 Powered Tailwind on Port Meadow - this model flew to second place at the Dreaming Spires event and flew well indoors, without, however troubling the awards ceremony ever. 

The CO2 Tailwind flying at the Nottingham Indoor Nationals

Possibly time to investigate other types of scale model!

In a departure from the usual "scale the Moorhouse plan" approach I drew my own peanut plan. This has scale tail surfaces and zero dihedral like the original. Surprisingly the model flies well although it needs some tuning to turn in competetive flight times. 

Screen Shot 2012-04-21 at 19.07.24
Screen Shot 2012-04-21 at 19.10.10

The latest Tailwind; 13g of Peanut model. 

Time for a super Tailwind.  Not qualifying at the 2012 Barskston Nats wasn't great so whats needed is a large, accurate Tailwind.  It won't ever beat Bill or Andy if he makes a flight, but third has to be up for grabs again. 48" span, PAW 0.06 (1cc ball race) engine.  And the masterstroke? I now have a colour picture of the subject aircraft courtesy of my old kit scale sparing partner Graham Banham. 

Screen Shot 2012-08-27 at 18.29.28

Then the EAA Library came up with the following….

Image
Image 1

….doubling the number of colour pictures and adding another useful view.  One thing is for certain, the current 3 view is not up to scratch.  Time to modify what  I've got and get it to the scale tech cute.

And then on HPA somebody (thanks "Indoor Flyer") posted this gem.  Very rapidly the documentation issue with this aircraft is receding. 

Screen Shot 2012-12-01 at 08.16.57

3-view done now…possibly the most accurate one in existence…

Screen Shot 2012-12-23 at 10.02.05

Note this drawing is the copyright of Laurence Marks and no rights to use or reproduce it are granted to any other party. 




© Laurence Marks 2012