I gave a talk on Zoom for a Strut group (LAA enthusiasts) a few weeks ago.
The talk details the trip I took in 2017 to Oshkosh and back via a slideshow of images.
Click on the link below to listen to the talk
I have already written about the French company Turbotech. Specifically referring to their previous product offering (still on offer BTW) of the gas turbine gen set with recirculation - which improves fuel economy.
They now have a new product.
A gas turbine with direct drive to a prop. Which is of course a turboprop, but with a difference. With the same recirculation unit on the rear of the turbine the same 30% fuel efficiency is claimed as per the gen-set version.
Not only that but the Turboprop version boasts 90kW of power (that's 120.692 hp for you dinosaurs).
It also uses the electric starter motor to provide a short term boost of 10kW to take total power to 100kW (134.1hp).
I thought this would be great in the Twister.
The diameter of the unit works well but the length would mean it would be much too long to fit in a current cowling and indeed would put the C of G too far forward.
Anyway I haven't even mentioned the price yet...
See below response for the price which has one too many zeros in it to be a viable alternative to a piston engine. (125k Euros).
Oh well, dreams are free right?
Yesterday I competed in the first official (British Aerobatics run) comp this year.
The Tiger Trophy at Leicester.
It is a difference type of comp with all pilots from all classes competing against one another with one unknown sequence which gets progressively more complex the higher up the class goes.
I screwed up my spin - having not practised a one turn spin ever that I can remember - I am so used to doing 1 and a half spin turns that I did not recover soon enough and over rotated. So a hard zero for me on that one. The other figures flown scored well and had I done the spin right then I would have been right up there in the top 3, as it was I finished 10th from 15 competing.
A good fun day out despite my screw up.
A mate videoed part of my sequence with his phone so this is best viewed on a big screen.
The RC model that started it all.
It now hangs on the living room wall of Mike Friends house.
The origin story of the Twister is that Matthias and Thomas designed and built an RC model to compete in competitions. It was very successful and someone said "Why don't you build a full size version?". So they did and 10,000 man hours later the prototype Twister was finished, production soon followed.
Due to Covid, this year has been without an aeros competition run by British Aerobatics so far.
Adrian Willis of the British Aerobatic Academy decided to run his own comp at Fenland.
It was a less formal affair with good flexibility from the organisers. 3 sequences were flown over 2 days. I had not practised any of the sequences so treated it as a training exercise and good practise for Unknowns. Excluding H/C competitors I finished 2nd both days so not bad considering I hadn't practised since March.
|A recently completed One Design next to G-FUUN while the Extra 300 lands in the background.|
|The top 3 in each class.|
|'Mild' version of an Unlimited Twister.|
|More Extreme version with 400 degree per second roll rate and greater speed of flicks.|
|Extreme version with Extra 330SC overlay.|
|At Metal Seagulls hangar for the work.|
|New Throttle Position Sensor, Made in the UK!|
|New parts. Throttle body and Hall type position sensor and the Oil Thermostat springs|
|The broken smaller spring from the Oil Thermostat|
|Detail view of the area where the leaking head gasket let combustion byproducts seep out.|
|Detail view of the Exhaust valve seat. It seems it was the valve rather than the seat that was damaged.|
|Exhaust valve showing evidence of damage and leak.|
|Jonathan cleaning up the gasket area before installing the new head.|
|General view of the piston and cylinder before the new head goes on.|
|New Cylinder head in place. Torqued down very carefully and progressively to ensure the gasket seals well and evenly.|
|The Metal Seagull...|