SE5a Full Fuselage 3D Maiden report - RC Groups
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Jun 23, 2007, 01:45 PM
Brit in Bahrain
Nigelp's Avatar

SE5a Full Fuselage 3D Maiden report

Quite a time ago I sent a private message to pjmass - designer of the 'Baby Baron', Big Baron', Das Ugle-stick etc. to ask if he was going to design a full fuz SE5a (my all time favourite aircraft !). This is the result ! I took a while to build it and whilst it is 'stand off scale' I admit I got a little bit carried away with the details (just a tad LOL).

Maidened it yesterday - it flew perfectly !!!!!! (having said that, Peter is an accomplished 3D flyer and I am strictly a mediocre sport flyer !)

High rates rapidly scared me to death ! It goes exactly where you point it and it rolls like a drill!!!! So, switched to low rates, and as usual with Peter's designs, it flew like a pussy cat (even I could handle it LOL!) Wild to mild.

Being slightly anal, I had checked and re-checked everything during the build and fitting out to be sure everything was as it should be....however, did the usual wiggle of the sticks immediately before opening the throttle for the maiden ROG ..only to discover (thank goodness !) that somehow - even after all that checking - that the rudder was reversed !!!!!!!!

During the maiden the motor cut ! (that has never ever happened to me before with an electic motor !!!!!!!) Result - dead stick landing. Checked it out - couldn't find anything wrong - relaunched and after 5 minutes - it did it again !!!!! Another dead stick landing - couldn't believe it !.....I am now troubleshooting cos I found that my CC Phoenix esc was red hot ! Maybe too many amps but I suspect not enough cooling air - the air temperature at the time was 45C / 112 F + (!) and the esc is inside the fuz!

The dead stick landing were a testament to the strength of the model and actually a bit of a confidence booster for me ! Anyway, back to troubleshooting the esc. I just can't wait to get this machine back into the air!

I have attached a couple of photies.

Last edited by Nigelp; Jun 25, 2007 at 02:02 PM. Reason: forgot to attach the pictures (Sheesh)!?
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Jun 23, 2007, 01:48 PM
feel no remorse
youth must fly's Avatar
I cant see the pics
Jun 23, 2007, 02:52 PM
Grounded in Arlington
rab's Avatar
Looks good. Are the plans available somewhere?

- Allen
Jun 23, 2007, 02:53 PM
Brit in Bahrain
Nigelp's Avatar
Try sending a PM to pmjass - he's a member.

Jun 23, 2007, 03:09 PM
Brit in Bahrain
Nigelp's Avatar
Some details of the plane:

SE5a Full fuselage – 3D. Designed & drawn by pmjass who also designed:
– Fokker Dr1 (indoor version “Baby Baron)
– Fokker Dr1 (outdoor version “Big Baron)
– Das Ugl-e-stick & others.

From plans - 6mm Depron.
4 channel biplane Aileron / Elevator / Rudder
Full fuselage with Flat wings - NO WING SPARS - honest - flying wires only !
Wing span: 840mm / 33”
Chord: 180mm / 7.1”
Total chord - both wings: 255mm / 10.03”
Wing area: 436 sq. ins. / 3.02 sq. ft.
AUW 627g / 22.12 oz
Wing loading 7.32 oz / sq.ft.
CG back from LE of top wing:
25% = 63.75mm / 2.5” back
30% = 76.5 mm / 3.01” Ditto
33% = 84.15 mm / 3.31” Ditto

Length (inc. rudder): 746mm / 29.3”
Wheels: 83mm / 3.26” dia. (19g / 0.67 oz each)
U/C: ‘Bamboo’ chopsticks with 4mm / 0.15” dia CF rod joiner.
Music wire stub axles 1.5mm / 0.06” music wire – bound & CA’d to C.F. rod.
Motor: Komodo 283 v2. (23.8 mm double stator outrunner)
Winding 11T x 23 SWG (?) around Kv 500
Swings an GWS 11 x 4.7 at 5745 rpm pulling 10.8 amps
Approx 117 W in / 89 W out. Efficiency: 76%
805g / 28.4 oz thrust Pitch speed 25.57 mph
(All manufacturers figures)
Weight: 65g / 2.29 oz. including engine mount.
Watts per pound = 64.5
Receiver: Schultze Alpha 435 – 35 mHz 4 channel (9.5g / 0.32oz.)
Servos: 2x Waypoint WO68PB (6.8g each) Rudder & Elevator (pull/pull – using 20lb braid fishing line)
1X Waypoint WO92 (Metal gears 10.8g ) on Ailerons
Aileron torque rods: Made from 1.5mm / 0.06” music wire & ‘Ball point’ pen plastic tube.
ESC Castle Creations Phoenix 25A brushless.
Battery: Align Li-po. 3S - 1900mAh (145g / 5.11oz.) 13C
Antenna: Azzar 35mHz 9” Micro-Lite antenna
Flying wires: 0.5mm / 0.019” Carbon fibre rod
Struts: ‘Bamboo’ chopsticks
Painted with: Green – water based acrylic rattle can
All others – brush – water borne artists acrylic

Pilot carved from laminated blue foam and painted with w/b artists acrylic.

Lewis Gun & mount carved from blue foam

Last edited by Nigelp; Jun 24, 2007 at 01:53 PM.
Jun 23, 2007, 04:13 PM
Registered User
bubbafusion's Avatar
That's one sweet looking design!
Jun 23, 2007, 04:20 PM
Brit in Bahrain
Nigelp's Avatar
Thanks bubbafusion - that Stearman bipe in your avitar looks good - how does it fly ?

Jun 23, 2007, 07:15 PM
Team FlightPower AUS
pmjass's Avatar
Looks fantastic Nigel.

Plans are/will be available. For now the easiest for me will be for you to post a request in the thread and I can send a zip file. Soon hopefully I will get the plans loaded onto a server.

Jun 23, 2007, 10:30 PM
Registered User
bubbafusion's Avatar

The Stearman is a great flyer. It's a Guillows conversion. There are some posts about it in the "Show your electric warbirds" and "Guillows R/c Conversion post!!!" threads. I've flown it about 2 dozen times, but I still get nervous every time it's in the air because it took so long to build. It loops great, rolls in a very scale manner (slowly) and flys inverted well.
Jun 24, 2007, 03:32 AM
building building building!
aerophilia's Avatar
Nigel, your attention to detail is excellent. That's a fantastic looking plane. Still looks very scale despite it's aerobatic prowess. Love the fact that it is full fuse. I have just finished building tony65x65's se5a, so I might have to start a squadron!
Jun 24, 2007, 08:00 AM
-+- PhlatBoyz -+-
kram242's Avatar
Very nice
Jun 24, 2007, 01:22 PM
Brit in Bahrain
Nigelp's Avatar
Hi Guys,

If anyone is interested I have enough pictures to turn this into a build thread - I know Peter is interested - LOL 'cos I did a few bits umm - 'slightly differently' !

Happy landings (& hopefully not deadstick !!!!)

Jun 24, 2007, 03:57 PM
Registered User
bubbafusion's Avatar

I'd be interested in a build thread. I printed the plans this morning and started cutting out some templates. One thing I'm confused about is the fuse cores. The plan says to make two stacks of two 6 mm pieces and one 3 mm piece and then glue the two stacks together. On the other hand, the plan says to make six 6 mm pieces and the rectangular pieces that hold the upper and lower parts together are wide enough for six 6 mm (36 mm) plus two 3 mm (6 mm, for a total of 42 mm). So, I assume the stacks should be three 6 mm pieces each, not just two?
Jun 24, 2007, 05:19 PM
Team FlightPower AUS
pmjass's Avatar
Two stacks of 3.

I'll check the plan and update. Thanks for letting me know.

Once Nigel post a few pics it will be easier

Jun 24, 2007, 06:18 PM
Grounded in Arlington
rab's Avatar
I would love to see some build photos.

- Allen

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