Phil's SCSA Newsletter
12.02.2007
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Please send photos in full resolution as Jpegs with minimum compression and no adjustments, text is best with paragraphs but no carriage returns. Chris Bishop has one with a Corex rudder, his flies better than mine |
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Editorial Gordon asked us to take care on Selsley common, it is very slippery, Gordon fell and broke his leg in two places. We wish him a speedy recovery. Sorry more Depron again this week, my garden is too small for flying models with my skill level but I have an area of grass at my front gate and flat field very close. The more adept can fly these models in small rooms or from windows in flats by catching them. The television program about the aerobatic nationals showed these top flyers flying a variety of models indoors in the evening. Park or indoor flying is the opposite end of spectrum to the scale flyer who spends many hours building and rarely flies. Please lets have some articles about normal slope models for next week |
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DIARY
Feb 18th North Staffs MAC Swapmeet and Fly In March 16th Three Shires MFC Swapmeet 7 pm on. Dudley & Kingswinford Rugby Club, DY6 0AW. Contact 07963 777841 or enquiries@threeshiresmfc.co.uk Telephone: +44 (0) 1903 765496 / 752866 or 07000
AMERANG Fax: +44 (0) 1903 765178 / 753643 WANTED 60”
ish Pylon racer type slope model, preferably with radio etc installed,
not
Zagi type. Just looking for something tidy I can use occasionally when
I have the time Wanted. |
A rather poor photo of my new lightweight model. It is called Tension and was the free plan in the latest magazine. I have used a Komodo motor running a 8 x 4" propeller. Total ready to fly weight is 8ozs giving a wing loading of 2.8ozs/sq.ft. Should be alright for light conditions. Tim |
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| Mini IFO (Indoor flying Object) This design is about 8 years old, I have altered it to make it quick to build. It took about an hour to build with another hour of fiddling. This model flew well with a brushed motor and Ni-cads, Li-polys and a Brushless improves it. |
| The frame is made from 3mm carbon, the curved part rod and the straight parts tube. The long piece is bent round and the rear spar tied on and super glued. Two pieces of tube run up the middle separated to support the motor tube and servos. the front cross piece is fitted after the motor and prop are temporally fitted to allow room for the prop. |
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I covered it in pro film, Ripstop nylon would be more durable, elevons and fin are made from depron, the elevons are hinged using Diamond tape, six short pieces are joined in pairs sticky to sticky for about 0.25", then attached under and over to form a slop free joint. Servos are taped in place and connected to the elevons with Z bent wires. |
| The motor is a 1300rpm/v D2730 CD
ROM type which can provide 420 grams of thrust, way over the top for a 4oz model.
This motor weighs 20grams and is fitted with an 8 X 4 prop drawing 6
amps on full load. The motor will turn a 9 X 4.7 at 5,600 RPM taking it
to its full load of 9 amps. Great value at £6 from revolution
shop in Hong Kong. The prop saver won't be needed when I make a
proper undercarriage . |
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| Some weight could be saved, the motor, controller and receiver are all too big, It has worked out that the battery is on the C of G, this is useful for using a variety of batteries, I haven't tried 3 cells yet. If you make one to take on holiday, make the fin removable so it will it go in a suitcase. |
| Flying Very easy to fly, the wing loading is a little over 2oz per square foot making slow flying a doddle. I left the covering loose so that it forms an aerofoil, I don't know how much difference this makes. Nothing is unbreakable apart from a black box flight recorder ( why don't they make the whole aircraft out of the same stuff?) but you can't get much stronger than carbon fibre. The prop protection is great idea. I have damaged the prop by heavy landings bending my crude undercarriage and allowing the prop to hit the floor. Prop hanging is not good without a rudder, I will have a go at fitting one |
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| This model is very happy indoors, able to withstand the odd meeting with the walls |
Outside my house, the telephone cables cause problems, but a great place for making modifications and test flights |
| Wingspan 24 inches Length 17 inches including elevons Weight 4 oz no battery Fin 6 x 5 triangle 3mm depron Elevons 1.75 inches 3mm depron C of G - 4 inches back from leading edge |
Motor 20 gram 1300 rpm per volt CD ROM type |
| Monday, very little wind, I went for quick electric fly on Minch, Tuesday a fickle breeze but good thermal lift. Wednesday Poor lift - good park flying weather. Thursday and Friday I gave it a miss apart from a quick wiz round outside my house |
| Saturday at Chosen Hill school Not such a good turnout, only three members of our Club; Chris has made good progress with his helicopter flying and Steve hit the wall again. CB out flew me with his Extra, a better plane and better pilot. The controls on CB's Extra are very precise, on my Home Brews all the controls are sloppy and I used £3 servos. My IFO does not want to turn against the prop near the stall, looks like I will have to fit a rudder. The little toilet seat went well although the 6 x 3 prop has a little too much pitch for indoors |
My depron home brew in ghastly white |
| Paul's Holy Cow caused concern again, it is a bit heavy and fast for indoors, before flying with Paul you've got to ask yourself one question: Do I feel lucky? His Christian Eagle did not survive the heavy arrival and the boom on helicopter broke when it hit the wall. I had two midairs with Chris's Crash ( give a dog a bad name?), knocking a couple of chunks out of it, Chris used foam safe super glue making the mends invisible. CB had put a lot of effort into frequency control and flying slots but nothing can be done about pilot error. It might seem silly flying indoors but it is great fun, come along in fortnights time you might enjoy it. |
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Peter's VoltiJ |
Sunday
Wendywindblows shows SW wind @ 18mph.
Arrive on Frocesters - wind SSW 10mph.
rain/drizzle
Travel to Hairsfields small slope which is
flyable for about half an hour then wind falls light & veers off
to the west.
Back to Frocesters - light wind is WSW
about 10 mph - trying to fly in the boule (spelling!) with fog
coming up the slope.
Decide to clear up & go home about
11.30 - wind increasing, fog clears & turns into a sunny
afternoon. Ah well, next week !?!
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