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RCU Review:

 

Seagull Decathlon ARF 120

 

 

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Contributed by: Mike Buzzeo | Published: October 2009 | Views: 68486 | 

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Mike
Buzzeo

(MinnFlyer)

Email Me

 

Introduction

Specifications

First Look
Assembly

Photo Shoot

Flight Report

Video

Summary

Contact Information

I love Decathlons! There is something about that classic
"High-Wing" look combined with the awesome aerobatic
capabilities that really gets my blood stirring. A few years back I
reviewed the 

Seagull 40-size Decathlon

 and it quickly

became one of my favorite planes, so I jumped at the chance to
review their new Decathlon 120.

Although this is listed as an intermediate plane, many people can
attest to the fact that a Decathlon (ANY Decathlon) is not for a
pilot with only a few planes under his (or her) belt. It is a very
deceiving airframe - They LOOK like a trainer, but these are
highly aerobatic airplanes, and their short tail moment trades
stability for agility. Generally, as long as you get a good speed
before lifting off, and always keep in mind that they can bite you
if you're not careful, you'll love them!

Summary of Contents for Super Decathlon ARF 120

Page 1: ...obatic capabilities that really gets my blood stirring A few years back I reviewed the Seagull 40 size Decathlon and it quickly became one of my favorite planes so I jumped at the chance to review their new Decathlon 120 Although this is listed as an intermediate plane many people can attest to the fact that a Decathlon ANY Decathlon is not for a pilot with only a few planes under his or her belt ...

Page 2: ...gh talk let s dig in Name Decathlon ARF 120 by Seagull Price 319 99 Wingspan 78 5 in 2000mm Wing Area 1032 5 in 66 6dm Length 53 0 in 1344mm Flying Weight 10 0 11 5 lb 4 5 5 2 kg Wing Loading 22 3 25 6 oz ft Airfoil Semi symmetrical Center of Gravity 2 75 3 5 70 90mm from the leading edge of the wing Radio Used Spektrum DX7 Servos Used JR DS821 5 JR 537 1 Engine Used Zenoah g 20 Channels Used 4 to...

Page 3: ...t The CG should be 2 75 3 5 70 90mm behind the leading edge of the wing As is so often the case the manual is the weak link My first impressions were that it was not too bad although it uses a lot of pictures in place of written instructions but as the build went on I noticed two things in particular that should be noted aside from the Tech Note above First and foremost the manual instructs you to...

Page 4: ... for it to go into My first thought was They omitted installing the turnbuckle mount At this point I did a little minor surgery and placed a piece of plywood under the surface to give the turnbuckle something substantial to grab on to Then I covered the scar with red Ultracote which was a perfect color match However when I did the RIGHT wing I noticed that the inboard rear hole was much further fo...

Page 5: ...he control horns can be installed The hole locations are marked by a pin hole in the covering I found that I had to clear out one of the holes with a drill bit but the rest were clear through ENGINE AND TANK ...

Page 6: ... electric power choices Its dimensions are especially well suited for round cowl models like Hangar 9 s popular Corsair 60 and P 47D 60 ARFs It has plenty of power for many 90 to 1 20 size sport applications as well Much of this incredible versatility can be attributed to its lightweight magnesium aluminum alloy crankcase that gives it an impressive thrust to weight ratio compared to most gas engi...

Page 7: ...ks to drill the mounting holes TAIL Adding the tail section starts with the removal of the covering on the stab center section Alignment is a piece of cake thanks to the alignment pin in the fin Once the epoxy on the stab and fin has set you can now hinge the rudder I was perplexed at first to see closed loops in the tail brace wires until I realized that the sleeves had not yet been crimped whew ...

Page 8: ...ail wheel assembly is installed LANDING GEAR You must cut the slots in the fiberglass pants for the axels I found that I needed to go a little higher than the 14mm stated in the manual for the plywood back plates to be fully concealed Assembling the pants was very easy and they are then bolted to the bottom of the fuse There is also a plastic cover that gets glued over the area which I decided to ...

Page 9: ...l you to drill through the wing and tube and to insert a screw through the holes but I skipped this step The wings already have bolts holding them to the fuse so bolting through the tube also would not only be redundant but it would greatly increase assembly disassembly time Of course if you should choose to add the bolts I won t say not to The door is now secured with two small nylon thumb screws...

Page 10: ...ace I had expected it to That brought on another wave of anxiety Decathlons are notorious for torque rolling into the ground if they lift off too soon No problem there either The Decathlon took to the air like it had been waiting to get there Once airborne I did the usual fly the box to get her trimmed out and after only a few minor trim adjustments she was flying hands off Now let s see what she ...

Page 11: ... the firewall to go bigger Landings were also very nice She glides in well without being a floater and she touches down as pretty as you please Since the maiden flight I have flown the Decathlon several times in a variety of weather and wind conditions including once when I flew it in an exhibition for full scale pilots on a day that I would have normally considered to be way too windy and it hand...

Page 12: ... which are characteristic of Decathlons And once she s airborne she ll do anything you ll see a full scale Decathlon do I m really thinking Smoke System at this point Even with the nice ground handling I would discourage a beginner from trying ANY form of Decathlon but if you re well into the intermediate stage or an advanced pilot the Seagull Decathlon 120 is a definite keeper Seagull Models Dist...

Page 13: ...Profile Excellent review and great video Profile I have one with an RCS 140 22cc gas Good flier a little overpowered Forget the 30cc Good review Profile Thanks for the good review Mike I was wondering is there enough room inside the cowl for my Saito 130TD twin which is 7 5 inches wide Profile Nope the cowl is only 6 5 inches wide Profile Mike Would a OS FS 120S III 4 Stroke engine fly this airpla...

Page 14: ...s Toledo Show 2015 Hobbico Due to technical difficulties we were only able to get one interview at the Hobbico booth on Saturday Rest assured that the 04 19 2015 Weak Signals Toledo Show 2015 RCGF RCGF Engines were well represented at the expo this year and they had two exciting new engine for us to see It seems a thou 04 19 2015 Weak Signals Toledo Show 2015 The World Models Another one of our an...

Page 15: ...the US for quite some time now and they now have a new distributor Openhobby com is now selling the Gr 04 10 2015 Return to Magazine Homepage RCUniverse is a service of Internet Brands Inc Copyright 2001 2015 Privacy Policy GET FREE RC CONTENT FOR YOUR WEBSITE Search Marketplace Event Central Local Clubs Magazine Product Ratings New Products Discussion Forums Photo Gallery Instructor Search Field ...

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