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Old Dec 25, 2012, 02:25 PM
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Joined Apr 2012
8 Posts
lovely model, my son loves it. Thanks for the plan
have a look at these videos, 10 year old flying this lovely model
http://www.rcpak.com/index.php/video...ime-of-my-life

http://www.rcpak.com/index.php/video...rab-and-let-go
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Old Dec 27, 2012, 06:00 PM
Registered User
United States, WA, Seattle
Joined Mar 2012
176 Posts
I just built this model using 1.3# 6 mm EPP foam. It turned out really flimsy and would have been better using 1.9# 9 mm foam but the 6mm is all I had on hand. It weighs 185 grams including 2s battery. I flew it today for the first time out in front of the house and gave the neighbor kids a thrill. It flies great.
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Old Jan 04, 2013, 05:53 AM
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United Kingdom, Northern Ireland, Belfast
Joined Jun 2011
339 Posts
I wish my kid would get into flying the one I built for him but alas it seems RC can't hold a candle to Xbox for a 12 year old. On a plus side that is some great flying from your son there Turbo.
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Old May 07, 2013, 01:58 AM
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Joined Nov 2011
64 Posts
Sorry for bringing up an old thread, but I just wanted to drop by and say thank you to Spitfire for the plan. I am a beginner 450 size heli flyer, and have no experience with planes at all other than computer sims. I managed to build this sbach with KF stepped airfoil and have successfully maidened her!!!

Thank you!!!


Dollar Tree foamboard scratch build SBach 342 maiden flight (9 min 37 sec)




Specs:
Wingspan: 840mm
Length: 889mm
KF two-stepped airfoil at approx. 40% chord length
Flying weight including battery: 430g
CG: 263mm from tip of fuse (not tip of motor or prop)
Control surface throws: 40 degrees for all.
150W motor with 8x4 prop
Hovers at approx. 55% throttle (0-100 scale)
High alpha moving around at approx. 40-45% throttle


Materials:

Airframe:
2 x 20*30" Dollar Tree foamboard @ $2
1 x 3mm carbon fiber spar @ $3
A few popsicle sticks for control surface horns
Small length of galvanized steel wire as push rods.

Electronics:
1 x Zippy Compact 1000mah 3S 35C battery @ $5.5
1 x Turnigy D2822 1450kv motor @ $8
1 x 30A generic ESC from Ebay @ $7
1 x FlySky 6ch receiver @ $9
4 x HK15178 10g 1.4kg servos @ $8 ($2 each)

Radio:
Turnigy 9X v2 with open9x firmware.
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Old Aug 28, 2013, 12:28 AM
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United States, MN, Minneapolis
Joined Nov 2012
19 Posts
THANK YOU FOR THE PLANS! I'm not a super-ninja 3D guy, but this is my FAVORITE 3D plane. It's fantastic flying, and great looking.

I don't remember the exact size (I'm not at home right now) but I built a 90% version out of 6mm depron to run off 850mAh 3s lipos with a Turnigy 3020 1200kv and a GWS 8x4.7 prop, and a 70% version out of 3mm depron to run off a 500mAh 2s lipos and a Turnigy Park 250 1680kv and the same GWS 8x4.7 prop. The smaller one is 120 grams without a battery. I THINK it bigger one is around 240 grams, but I don't remember for sure. The smaller one isn't super strong with the 3mm depron, the wings want to crack when I yank it around in spite of the carbon spar, but MAN do they both fly nice. They're rocketships and seem to track really true.

Love the plane and plans. Thank you.
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Old Sep 06, 2013, 08:58 AM
(aka Cliff Lawson)
Wright Flyer's Avatar
United Kingdom, Essex
Joined Oct 2001
1,897 Posts
HK Sbach 342 34"/863mm - am I alone?

*deleted*
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Last edited by Wright Flyer; Sep 06, 2013 at 09:00 AM. Reason: Posted in wrong thread - meant to create a new thread - doh!
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Old Oct 12, 2013, 03:56 PM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
4,294 Posts
Firstly, thanks for the very good plans. Decided to scale the plans down to 24" as I wanted to use some smaller 300-500 mAh 2s packs. Built from 6mm depron style foam obtained here
http://www.ebay.co.uk/itm/1807601680...84.m1497.l2649 Not bad for 3.50 per sheet with free 24 hr delivery. Even gave me the hour slot that they would deliver it!
Motor is a 1826-10 2800kv from Giant Shark, 6x 3 GWS prop, 6amp plush esc Maidened on a 300 mAh 2 cell pack and finished on a 2s Zippy 500 mAh.
Need to add a bit more colour, perhaps some chequers underneath and strips/lightning bolts on top.
Here's the video
Sbach profile foam radio control plane (4 min 31 sec)

Just a few clicks of up trim had her flying straight and true but I think the pack could still come back some to improve knife edge and hovering.
Andy
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Old Dec 01, 2013, 05:13 AM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
4,294 Posts
Made an EPP version for indoor season
Radio control Sbach 342 24" (1 min 36 sec)

Andy
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