View source for Turnigy Tek Sumo

[[Image:Turnigy_Tek_Sumo1.jpg|600px|right]]
The Tek Sumo is a flying wing with an impressive range of flying characteristics. It is light weight but includes spars to reinforce the two wing halves.

* [[RC_Airplanes|Back to RC Airplanes index]]

== Specifications ==

* Released: Fall 2011
* Type: Powered medium sized flying wing
* Airframe: Rough EPP (Expanded Polypropylene) foam - rubbery
* Wingspan 900 mm - 920 mm (measured)
* Wing area: 252 dm^2
* Length: 575 mm - 570 mm (measured)
** Root chord: 290 mm (excl. elevons) - 345 mm (incl. elevons) [http://fwcg.3dzone.dk/?wing_span=900&root_chord=290&tip_chord=205&sweep_type=0&sweep=315&cg_pos=20&show_mac_lines=0]
** Tip chord: 205 mm (excl. elevons) - 270 mm (incl. elevons)
** Sweep: 315 mm (front to tip difference) [[Image:Tek Sumo Flying wing CG calculator.png|300px|right]]
* Center of gravity: 200-212 mm (instructions), range 190-212 mm, from leading edge/tip - aim for 210 mm [http://fwcg.3dzone.dk/?wing_span=900&root_chord=290&tip_chord=205&sweep_type=0&sweep=315&cg_pos=20&show_mac_lines=0]
* Stock weight: 230 grams (wings, winglets, motor mount, servo mount, push rods, linkage, carbon fiber rods, front padding)
* Elevon travel range (radio programmable):
** Elevator: +-10 mm
** Aileron: +-15 mm
* Payload capacity: 100-250 grams (at least, CoG and power setup dependant)
* Reinforcement: Black carbon fiber spars, two 2x530 mm 1.9 gram wing spars, three 2x160 mm cross spars, two 3x320 mm elevon spars
* Recommended flying area: 250x250 meters [http://flbeagle.rchomepage.com/software/webocalc_1.05/html/webocalc_metric.html]
* Product page: [http://www.hobbyking.com/hobbyking/store/__17969__Hobbyking_Teksumo_EPP_Wing_900mm_ARF_.html HobbyKing Tek Sumo]

== Manual ==
* [http://beta.ivc.no/rc_airplane/Turnigy_Tek_Sumo_manual.pdf Manual for Tek Sumo] - Official manual
* [http://beta.ivc.no/rc_airplane/hobbyking_f-40a_esc_manual.pdf Manual for HobbyKing F-40A ESC] - For programming the controller

== Similar models ==
* [http://www.techonehobby.com/proview.asp?id=300 Techone Popwing 35-inch] [http://www.2dogrc.com/techone-35-pop-wing-rc-airplane 2DogRC vendor] - [http://www.rcgroups.com/forums/showthread.php?t=1497187 RCGroups review]
* [http://www.e-voo.com/forum/viewtopic.php?t=123190 Alexandre Lopes Tek Sumo scrath build]

== Stock kit ==
The kit from HobbyKing will include the essential parts to put together the airframe, including push rods and repair tape.

* 1x Tek Sumo 2 wing halves
** 2x Pre-glued carbon fiber rods 2 mm on wings top and bottom
** 2x Pre-glued carbon fiber rods 3 mm on elevons bottom
* 2x Winglets
* 1x Front EPP padding block
* 2x Push rods 1 x 200 mm
* 2x Glassfiber control arm 21 mm
* 2x Linkage stopper 1.5 x 6 mm
* 4x Equipment bay plastic bands 250 mm
* 3x Carbon fiber rods 2 x 160 mm
* 1x Plywood motor mount 38 x 38 mm backplate 23 x 23 mm pattern
* 2x Plywood servo mount 23 x 12 mm
* 1x Plywood velcro battery mount 71.5 x 25 mm
* 1x Fiberglass reinforced tape 15 mm
* 1x Instruction manual 4 pages

== My setup ==
[[Image:Teksumo_rctimer_bc2826-10_1400kv_7x4_3s2100.png|250px|right]]
[[Image:Teksumo_rctimer_bc2826-10_1400kv_8x4_3s2100.png|250px|right]]
=== Base setup ===
This is the current setup, as of 2012-02-08:

* '''Motor:''' RCTimer BC2826-10 1400 Kv 205W outrunner motor
* '''Propeller:''' APC 7x4E propeller with 5.0 mm collet adaptor for 3.17 mm shaft
** '''More trust:''' APC 8x4E propeller with 5.0 mm collet adaptor for 3.17 mm shaft
** '''More speed:''' APC 6x4E propeller with 5.0 mm collet adaptor for 3.17 mm shaft
* '''ESC:''' RCTimer 30A Brushless Programmable ESC with T-type Deans and 3.5 mm bullet connectors
* '''Servos:''' HexTronik HXT900 Blue 9 gram digital servos
* '''Receiver:''' Spektrum AR7000 7 channel receiver
* '''Transmitter:''' Spektrum DX7 DSM 7 channel transmitter
* '''Battery:''' Moxie 2200 mAh 3SP1 11.1V Lithium-ion Polymer 190 gram battery

=== Upgraded setup ===
[[Image:Teksumo_rctimer_bc2836-6_1500kv_7x4_3s2100.png|250px|right]]
Possible future upgrades. The control link is upgraded to a FrSky kit to extend the range and reliability. Motor upgraded to a stronger BC2836-6 1500 Kv outrunner and 8x4E propeller.

* '''Motor:''' RCTimer BC2836-6 1500 Kv 368W outrunner motor
* '''Propeller:''' APC 7x4E propeller with 5.0 mm collet adaptor for 3.17 mm shaft
** '''More speed:''' APC 7x5E propeller with 5.0 mm collet adaptor for 3.17 mm shaft
** '''More thrust:''' APC 8x4E propeller with 5.0 mm collet adaptor for 3.17 mm shaft
** ''Note: APC 8x4E propeller requires 40A ESC''
* '''ESC:''' RCTimer 30A Brushless Programmable ESC with T-type Deans and 3.5 mm bullet connectors
** '''Or:''' HobbyKing F-40A 40A Brushless Programmable ESC with T-type Deans and 3.5 mm bullet connectors - [http://beta.ivc.no/rc_airplane/hobbyking_f-40a_esc_manual.pdf manual]
* '''Servos:''' HexTronik HXT900 Blue 9 gram digital servos
* '''Receiver:''' FrSky D6FR 2.4 GHz ACCST 6 channel two-way receiver
* '''Transmitter:''' Spektrum DX7 radio with FrSky DHT 2.4 GHz 60mW transmitter
* '''Battery:''' Turnigy nano-tech 2200mah 35~70C 3SP1 11.1V Lithium-ion Polymer 189.4 gram battery

=== FPV setup ===
* '''Camera:''' Security Cameras 2000 PZ0420 600TVL camera
* '''Video transmitter:''' Best Offer Buy BOB ESXF700mW SR-700MW 1.2GHz 700mW 12V blue/purple transmitter 
** '''Antenna:''' Standard dipole antenna
** '''Antenna:''' Tuned RG316 single dipole antenna
* '''Video receiver:''' Best Offer Buy Comtech module 12V receiver
** '''Antenna:''' Standard dipole antenna
* '''Goggles:''' FatShark Dominator FPV goggles
* '''Display:''' MacBook Air with EasyCAP DC60 USB video capture adapter
* '''Other:''' LPF-01 Common mode LC power filter, 3S 2200mAh batteries, custom made power cables, composite video splitter

== Tips and tricks ==
* To glue the wing halves together and motor mount, use PU (Polyurethane) glue, e.g. Gorilla Glue, activate with water and keep pressed together using tape
* For attaching the winglets use hot glue in the main contact surfaces and silicone glue (GOOP) around the bead [http://www.rcgroups.com/forums/showthread.php?t=1380936] [http://beta.ivc.no/wiki/index.php/AXN_Floater_Jet#Glues]
* For better FPV signal conditions, replace the carbon fiber rods (1.9 gram) with 2 mm fiber glass rods (4.8 gram) on the wings and center spars, they're easy to undo, use thick super glue
* Use servo cable extensions to reach the servos from the equipment bay
* Reinforce the motor mount with super glue and kicker, paint it black for smoother appearance
* Calculate the motor and propeller size for the desired air speed, flight time and efficiency, use [http://www.ecalc.ch/motorcalc_e.htm eCalc] 
* Make incisions to remove the floor in the equipment bays, make it even thinner and use PU glue+tape to re-attach the floor on the opposite side
* Put the equipments on the top side using the tip above to move the floors
* Relocate the servo holes to be perpendicular to the forward motion direction of the wing, position the servos horizontal (not vertical), double-sided adhesive pad+tape or hot glue, less drag [http://fpvlab.com/forums/showthread.php?1281-Starting-build-on-60-quot-zephyr/page2]
* Use glass fiber reinforced tape to cover servo wire trails
* Cut a hallow 2 mm carbon fiber tube to fit over the push rod to minimize flexing 
* On the tip of the elevons, cut off the corner to avoid the obstruction with the winglet
* Detach the elevons using a razor blade and reattach using strong 3M Mailing and Storage tape for optimal frictionless motion
* Reinforce the front tip of the wing by inserting two 3 mm x 110 mm carbon fiber rods into the foam from each side, pre-fit and use PU glue
* Scorpion, Hacker, Cobra are all reported to be very good motors if you want better quality [http://flitetest.com/forum/showthread.php?135-Tek-Sumo-and-Bonsai/page8]  
* Fine tune the CoG (center of gravity) using the battery and motor as weights
* Pick a suitable motor+battery combination, simple rule: motor weight / 0.025 = battery capacity+-100 mAh, battery capcity * 0.025 = motor weight+-5g
* Center of gravity point is 190 to 212 mm from the front of the nose, depending on battery and total weight, aim for 210 mm [http://fwcg.3dzone.dk/?wing_span=900&root_chord=290&tip_chord=205&sweep_type=0&sweep=315&cg_pos=20&show_mac_lines=0]
* Program the travel range of the elevator to be 15 mm up and down, and the aileron to be 10 mm up and down from default position 
* To maximum mechanical range (sensitivity) on the servo throws, use the outer most hole on the elevon control arm and the inner most on the servo arm
* To ease the sensitivity of the elevons, try 40% elevator expo and 80% aileron expo [http://fpvlab.com/forums/showthread.php?1237-This-is-what-hapens-if-you-buy-a-TBS-Zephyr.../page2]
* Add a small sheet of coroplast and magnets to cover the equipment bay, use a 2 mm rod thought the flute hinge and PU or superglue for the magnet/metal piece

== Motor alternatives ==
Scorpion, Hacker, Cobra offer quality motors, but the priority here is low cost.
* RCTimer BC2826-10 1400KV Outrunner Brushless Motor, 50g [http://www.rcgroups.com/forums/showthread.php?t=1519868&page=2]
* Turnigy D2826-10 1400KV Brushless Motor, 50g
* HK2824-1300 HobbyKing 2824 1300Kv Brushless Outrunner 52g [http://www.hobbyking.com/hobbyking/store/__17969__Hobbyking_Teksumo_EPP_Wing_900mm_ARF_.html]
* L2205-1350 Turnigy L2205-1350 1350Kv Brushless Motor 30g, pair with 1300 mAh [http://www.hobbyking.com/hobbyking/store/__17969__Hobbyking_Teksumo_EPP_Wing_900mm_ARF_.html]
* D2822/14 Brushless Outrunner 1450kv 38g, pair with 1500 mAh [http://www.rcgroups.com/forums/showthread.php?t=1539051] [http://flitetest.com/forum/showthread.php?135-Tek-Sumo-and-Bonsai/page4]
* Tower Pro 2409-12t 1600kv 63g, heavy [http://flitetest.com/articles/tek-sumo-and-bonsai/] [http://flitetest.com/forum/showthread.php?135-Tek-Sumo-and-Bonsai/page8]
* RCTimer A2208-12 1800KV Outrunner Brushless Motor 38g, pair with 1800 mAh [http://www.rcgroups.com/forums/showthread.php?t=1539051]
* RCTimer BC2826-6 2200KV Outrunner Brushless Motor 50g, pair with 2200 mAh [http://www.rcgroups.com/forums/showthread.php?t=1490818] [http://www.rcgroups.com/forums/showthread.php?t=1519868&page=2]
* Turnigy NTM Prop Drive Series 35-30A 1400kv Brushless Outrunner [http://flitetest.com/forum/showthread.php?867-FPV-TEK-SUMO-2-0-High-speed-mountain-flyer]
* Turnigy 2836 Brushless EDF Motor 3200kv 72g [http://www.rcgroups.com/forums/showthread.php?t=1539051&page=3]

== Setups ==
Optimal power train around 200-300W [http://www.rcgroups.com/forums/showthread.php?t=1539051&page=2].

=== Guides ===
* [http://fwcg.3dzone.dk/?wing_span=151&root_chord=36.75&tip_chord=19&sweep_type=0&sweep=48.25&cg_pos=25&show_mac_lines=0 3DZone Center of Gravity guide]
* [http://flbeagle.rchomepage.com/software/webocalc_1.5.2/html/webocalc_metric.html Web-o-Calc propeller recommendation]
* [http://www.ecalc.ch/motorcalc_e.htm?ecalc eCalc for propeller airplanes]
* Propeller rule [http://www.rcgroups.com/forums/showthread.php?t=1539051]:
** Bigger prop - lower Kv motor, less amps, more thrust/climb
** Smaller prop - higher Kv motor, more amps, less thrust/climb, more pitch speed

=== Common setups ===
* Docile/easy: Motor 1350 Kv D28xL19mm 40g, APC 7x4, 3S 1000mAh 83g [http://flitetest.com/forum/entry.php?14-Tek-sumo-build]
* Cruising/easy: Motor 1450 Kv D28xL22mm 38g, APC 8x6, 3S 2200 mAh 170g [http://www.rcgroups.com/forums/showthread.php?t=1539051]
* Cruising/FPV: Motor 1800 Kv D28xL22mm 38g, APC 7x4, 3S 1800 mAh 153g, 15-20 min flight [http://www.rcgroups.com/forums/showthread.php?t=1539051]
* Cruising/FPV: Motor 1400 Kv D28xL26mm) 50g, APC 8x4, 3S 1500 mAh 138g, 15-20 min flight [http://www.rcgroups.com/forums/showthread.php?t=1519868&page=2]
* Performance/long: Motor 1600 Kv D31xL31mm 63g, APC 7x6/8x4, 3S 2200 mAh 138g [http://www.rcgroups.com/forums/showthread.php?t=15390519]
* Performance/speed: Motor 2200 Kv D28xL26mm 50g, APC 6x4, 3S 1500 mAh 138g, 10 min flight [http://www.rcgroups.com/forums/showthread.php?t=1519868&page=2]
* Ultra/long: Motor 1400 Kv D35xL32mm 88g, APC 8x8, 2x 3S 2200 mAh 340g, 18-25 min flight [http://flitetest.com/forum/showthread.php?867-FPV-TEK-SUMO-2-0-High-speed-mountain-flyer]
* Ultra/fast: Motor 3200 Kv D28xL38m) 72g, APC 7x6, 3S 2200 mAh 170g [http://www.rcgroups.com/forums/showthread.php?t=1539051&page=3]

=== Propellers ===
Common propeller sizes:
* 6x4, 7x3, 7x5, 7x6, 8x4, 8x8

=== Other equipment ===
* FeiYu Tech FY-21AP Gyro Stabilizing and autopilot [http://fpvlab.com/forums/showthread.php?2415-FPV-TEK-SUMO-Try-2-Mountan-plane]
* FeiYu Tech FY30A IMU Stabilizer [http://shop.fyetech.com/product_info.php?cPath=38&products_id=79]
* OpenPilot Stabilization [http://forums.openpilot.org/topic/6764-fpv-quadcopter/] [http://www.openpilot.org]

=== Flying weight ===
* 350 grams - setup 2208 1370 Kv, 20A ESC, 3S 1200 mAh, 6x5 [http://www.techonehobby.com/proview.asp?id=300]
* 489 grams - setup 2818 1350 Kv, 18A ESC, 3S 1800 mAh, 7x4 [http://flitetest.com/forum/entry.php?14-Tek-sumo-build]

== Build guides ==
* [http://flitetest.com/articles/tek-sumo-and-bonsai/ Flitetest Tek Sumo and Bonsai review]
* [http://flitetest.com/forum/showthread.php?135-Tek-Sumo-and-Bonsai/page4 bluegsxr6 Tek Sumo setup]
* [http://flitetest.com/forum/entry.php?14-Tek-sumo-build PaulT Tek Sumo build]
* [http://www.rcgroups.com/forums/showthread.php?t=1539051 yarg Tek Sumo configuration suggestions]
* [http://www.rcgroups.com/forums/showthread.php?t=1490818 octane81 Tek Sumo build] [http://www.rcgroups.com/forums/showthread.php?t=1519868&page=29]
* [http://flitetest.com/forum/showthread.php?867-FPV-TEK-SUMO-2-0-High-speed-mountain-flyer FPV Tek Sumo high speed mountain flyer] [http://fpvlab.com/forums/showthread.php?2415-FPV-TEK-SUMO-Try-2-Mountan-plane]
* [http://www.rcgroups.com/forums/showthread.php?t=1539051&page=3  planex Tek Sumo setup]
* [http://www.fpvsweden.com/?p=49 FPV Sweden Tek Sumo build log]
* [http://www.youtube.com/watch?v=dc0mAT4PquQ XJet Tek Sumo RC plane of the week]
* [http://flitetest.com/forum/showthread.php?472-Tek-Sumo Rellik Demanon Tek Sumo setup]
* [http://www.rcgroups.com/forums/showthread.php?t=1539051&page=2 beemerdon homemade balancing stand]
* [http://flitetest.com/forum/showthread.php?472-Tek-Sumo/page8 Joey6 Tek Sumo build and repair]
* [http://fpv.no/vbulletin/showthread.php/1043-Hobbyking-teck-sumo-9/page5 Tek Sumo and Zephyr compared]

== Tools ==
* [http://fwcg.3dzone.dk/ Flying Wing CG calculator]
* [http://www.ecalc.ch/motorcalc_e.htm?ecalc eCalc for propeller airplanes]
* [http://flbeagle.rchomepage.com/software/webocalc_1.5.2/html/webocalc_metric.html Web-o-Calc propeller recommendation]

== References ==
* [http://www.hobbyking.com/hobbyking/store/__17969__Hobbyking_Teksumo_EPP_Wing_900mm_ARF_.html HobbyKing Tek Sump EPP Wing]
* [http://www.rcflighttest.com RC Flight Test reviews]
* [http://www.geistware.com/rcmodeling/aerobatics/setup.htm Plane setup for success]

== Gallery ==
=== Stock ===
The photos below show my setup of the Tek Sumo, as of April 2012. The idea was to build it after the [http://www.youtube.com/playlist?list=UUeLLvbImyOXTiM-cEafRuHQ&feature=plcp Zephyr wing principles] and to make it as aerodynamic as possible.

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