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Old Jan 05, 2016, 05:05 AM
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Build Log
Seagull Decathlon .91 build

Hi,

I've been slowly putting together my Decathlon so thought I'd share some progress photos with you guys.

My engine should be arriving today (O.S 75 AX) I'll be running it in over the weekend on the test bench ready to fit next week. I'm looking at getting a pitts style muffler to minimise holes in the cowling

I'll be looking to get the rest of the servos soon, should be able to maiden it in a few months.
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Old Jan 06, 2016, 03:21 PM
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The engine arrived today, did a quick test fit 😊
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Old Jan 11, 2016, 05:21 AM
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Fired up the new engine at the weekend.

After a few tanks following the running in procedure it's running nicely :-)

https://www.dropbox.com/s/z6fzo5k8u2...7_Pro.mp4?dl=0
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Old Jan 24, 2016, 04:04 PM
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New JR muffler added and I've made some brackets to keep my models out of the way.
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Old Jan 26, 2016, 05:56 AM
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Engine mount drilled and test fitted with the engine and muffler.
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Old Feb 21, 2016, 12:07 PM
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Some updates, almost there!

Fitted engine test:
https://onedrive.live.com/redir?resi...nt=video%2cmp4

Progress pics below.
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Last edited by Swannyuk; Mar 09, 2016 at 03:04 AM.
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Old Feb 24, 2016, 04:03 PM
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Ready to go!
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Old Mar 12, 2016, 10:33 AM
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Maiden Flight

So, google rc decathlon and you will find lots of "internet pros" that warn you about flying this plane. Lots of horror stories about ground loops and tip stalls...load of rubbish IF you don't take the p*ss and fly it properly.

I've learnt the art of scale flying a tail dragger with my trusty great planes piper cub, its all about rudder control and letting the tail come up gradually on takeoff. The decathlon was no different. I gradually got up to half throttle at which point the tail came up, held it there for a second or two and she lifted off perfectly. Barely needed any counter rudder for the prop wash. I have no doubt that if I'd gone full throttle like you do in a trainer the o.s would have overpowered the plane and caused me control problems.

Landing was fine, the only problem was the wet "sticky" grass bit the front wheels. I wasn't fast enough to give it up elevator to get the tail down and over she went, luckily no damage.

Notes: Fly it like a real plane and it will serve you well. I'm upgrading to bigger wheels and a better tail wheel. That's it.

Looking forward to more flights in the future 😊
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Old Mar 13, 2016, 11:47 AM
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team sleprock
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looks & sounds like a winner!
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Old Mar 14, 2016, 06:17 AM
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Thanks!
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Old Mar 21, 2016, 05:40 PM
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Dubro tail wheel installed. Took some modification but got there in the end.
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