Wednesday, August 28, 2013

2013 Jet and Scale Nats entry form

The SAMJA and NASA Nats will be held at Zwartkop AFB 12 and 13 October.

The entry form is here.

Saturday, August 24, 2013

2013 F3K World Champs report sent in by Juanita Smith

The report is here

F3A World Champs -- Roston Dugmore Snr

Tks for the posting Percy,

Just a small correction. The German kid Philip Rannetshauser (now 18) was third junior at the 2011 wc.

I'm very proud of Roston. It was very close, Roston was 0.3% behind as they began the semis but he held his nerve and flew two good flights in very windy conditions to clinch it. I was so very tense and nervous just watching. I don't know how he kept his composure, knowing even the tiniest mistake could ruin it all. The past 6 days of intense competition have been very stressful and of course the closer you get to the big prize the more the stress builds. Roston is now 24th best F3a pilot in the world and 1st junior. Couldn't be better.

Thankyou all for your  support. We are now relaxing and enjoying the moment. But spare a thought also for Rannetshauser, the big prize so near but not quite must be disapointment of the same intensity as Roston's joy. The fierce competition from him makes Roston's win even more special. Congratulations Philip Rannetshauser for a great performance.

Roston sen

F3A World Champs update from Percy Attfield

Roston Dugmore Jnr flew the new schedule of the semi-finals and beat the present JR World Champion from Germany by 3 places in the semi-final.

This is excellent news; well done Roston Snr and Junior who practised each day after school and weekends.  The hard work has its rewards.

Thank you to Andre Stockwell who not only called for Roston but helped on weekends with the preparation, yesterday he and Jnr spent the day practising the semi-finals schedule.

South Africa now have the Junior World Champions for F3A Pattern Roston Dugmore Jnr and last month Jason Weber became the F3K Glider World Champion.

Kind regards

Wednesday, August 21, 2013

Quick update on the F3A World Champs from Percy Attfield

Keith, Bokkie, Rina and I went out to the F3A Worlds today and watched as Roston Dugmore Jnr became the only South African participant to qualify for the semi finals in heavy wind.
After the flight his caller Andre Stockwell described him as the “king of wind”.
Great achievement!!
For those who don't know how the F3A contest works.  The semi finals are the top 27 flyers.  They fly on Friday and the top 10 qualifies for the finals on Saturday.
Keep going Roston!!
Thanks for your support and calling Andre.
Kind regards

Monday, August 19, 2013

The joy of Control Line Flying -- Percy Attfield

Some of you know I was going to fly yesterday; wind or no wind

The past 3 weeks the wind was such that I threatened to go flying a few times and never did.  I bought a few Xoar wooden 2 blade props and wanted to test the difference between the 12x6 and the 12x5 as compared to the APC F2B 12x5 that I have been flying. I was planning these tests for the past 2 weeks but it was always windy and I never did any testing; yesterday I was determined to fly.

I decided to start with the APC prop so that I could get comparative timings.The wind was reasonably steady at 9 meters per second and I decided I would fly (no other C/L people were there) a few RC people were talking at the club (no one flying). The windsock was blowing 1/4 from the top of the pole not quite level with the ground.

Confident that I can fly at least level in the wind I armed the plane went to the handle and as I waited for the motor to start a big piece of plastic blew across the field from the car park and folded around the prop and nose section.  I could only watch the drama as it unfolded.  The motor started and the the plastic spun with the prop but the plane remained standing. A long few seconds, the plastic shredded and some of it blew away, some of it stayed with the prop and some went into the cowl.

The plane accelerated and took off.  It was flying slower than usual and I stayed down in the wind.  Suddenly the wind increased a lot but but with gusts and eddies.  On some laps as the plane came up wind it rolled with its inside wing over the top then a few laps later the outside wing over the top.  Jerking the lines levelled the plane out each time and it was clear I just needed to catch the roll before the wing went all the way over or under the plane.  Now that is a wake up call!

Suddenly the plane turned and I was looking at the spinner and the leading edges of both wings.  I jerked the lines and the plane went back to its flight path.  Now that was scary!!

I realised that with power on I had a reasonable chance but when the motor cut it was going to be real drama.  A few quick looks at the windsock showed it had first moved to level with the ground and now was actually showing upwards towards the sky by about a 1/4.  It reminded me of the immortal words of Roston Dugmore a few years ago in KZN when he eyed the windsock: “Thou shalt not fly”.

If I was not grey already I would have gone grey in these 5 minutes which felt like 20 minutes as I waited for the inevitable end play to arrive.

The motor slowed down and then speeded up and cut as it came into the wind. I touched down  less than a quarter lap later as the plane was wind up traveling fast.  Down elevator kept the trike undercart down, it travelled around the up wind quarter lap and then the wind was from behind, the plane actually gathered speed in the next quarter of the lap with the wind from behind.  Suddenly it was on the down wind side.  Determined not to get it back into the wind I ran with the plane and straitened out the landing run.  Initially I was a short distance ahead of the plane dragging the inboard wing forward but the plane was gaining on me coming back into the circle.  Dragging the wing forward plus the side wind slowed the plane and it stopped just as it got to the edge of the tar circle but still mostly down wind.  More than a 3/4 lap ground run.

I ran out and secured the plane and all ended well.  In the pits I found the the plastic was very light (like Saran wrap) a small piece had wrapped around the prop and a piece around the the motor shaft and can.  No damage that I could see.

You can imagine that was the end of my flying for the day and so I still have not done any Xoar wooden prop testing.

See you at the round and round; sure keeps us young.

Monday, August 12, 2013

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