UK members particularly this may be of interest

Hello,

This is mainly for those of the list who live in the UK. I hope I'm
allowed to post this sort of thing on here, if not, I'm sorry I didn't
realise. I have 5 copies of Kurt Schrecklings 'Gas Turbine Engines for Model
Aircraft' book. I may have some more available depending on how many people
want it. The book literally walks you through building your own working
model scale turbine. The engine works! It is NOT a useless model, it'll
produce around 30N (3Kilos) of thrust and it sits in your hand, I'm not
kidding. The guy set out to design a turbine for remote control aeroplanes.
The book tells you how he had the idea, how he made it a practical idea, how
the engine was scaled, how the parts where designed (You can use his work to
size it up if you want I suppose), how the parts are fabricated in a piece
by piece style, the plans for the engine and the instructions for putting it
in a model and starting it. It goes from easy pictures well up to stuff that
rockets over my head to do with escape angles, vectors of thrust from the
maximum rotational speed of the steel and such. With a bit of time I'm sure
anyone could work it out, but you don't actually need to. The shell for the
engine is made from an old camping gas cartridge. The engine is not
complicated at all, especially for the people on here. It has a drum
compressor that you make up on a lathe from wood and carbon fibres to add
reinforcement rings. There is a shaft that connects the compressors to a
single stage turbine you cut with a dremel or something similar. The parts
could be made far beyond the accuracy he writes the book for using all the
cnc stuff most of you have in your garages. I don't see any accuracies but
the smallest measurement I see is 0.01mm for turning a tiny amount off the
ballraces. The compressor and turbine are balanced by spinning them up held
between your fingers to sense for vibrations so I doubt it needs a
temperature controlled garage. In the book he built it ALL by hand with zero
cnc and zero special tools. All the parts can be made from normal steel but
the turbine disc which should be something like 316 if you can get hold of
it. Or Iconel if you're rich, which looking at some of the stuff a few own
you must be anyway. : ) You will need access to:

A lathe , 54mm centre height x 300mm between centres
A MIG set
A pillar drill for 0.5 - 10mm holes
An oxy/acet set
Usual bits like files and a dremel like grinder
Measuring devices such as a dial caliper, micrometer, vanier callipers
Tachometer for high rpm, thermometer, manometer (Pressure meter, you can buy
them or make one), a thrust platform if you want to measure it made with
some scales and some wheels.

The welding gear, I don't think you really need both. If you're any good
you'll be able to do it with either. If you have a TIG set you're there.
Lots of bits can be done with similar tools, like some of the holes don't
really need a pillar drill (Although it's better). The plans in the back are
excellent. The book is £14.99, I'll be selling these for about £11-12. If
you're interested in a copy let me know off list. I'll have to sort out some
way of exchanging the money because I don't have a full credit card yet.
: ) I'm not just making this sound good because I want to loose these,
I really do love the book. I've read mine own so many times it's falling it
pieces, I enjoyed reading it when I didn't even know what a dial test did. I
was amazed when I got the new ones because they're so damned clean compared
to mine. Like I say, it's best to reply off list so we don't annoy the
others. In the UK I don't think postage would be more than a few first
class, overseas it'd be a bit more. The books is usually $21 for the
Americans reading this.

Thanks,
John H.
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