101" SU-26 Sukhoi - 100cc Electric Conversion

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101" SU-26 Sukhoi - 100cc Electric Conversion

Post by admin » Fri Jan 20, 2012 10:57 am

Well... I splurged for a large scale (101" wingspan) 100cc SU-26 Sukhoi ARF... relatively cheap for its size, which had me a bit concerned, but upon delivery... it's an awesome, well-built airplane! Originally designed for a 100cc gasser... I plan to convert to electric... my biggest yet! ;)
Image
Nitroplanes had them on sale all winter... could not resist for the price!
http://www.nitroplanes.com/su26100cc101.html

I plan to use a 100cc brushless motor from Hobby King.
Image
http://www.hobbyking.com/hobbyking/stor ... duct=14427

A good friend of mine from France purchased this motor for a large scale Carden ARF he converted to electric (he originally had a DA100 in it and suffered a broke crank shaft) and said it packs quite a punch, and for the price you can not go wrong (something comparable like a large 100cc Hacker will cost around $1,200). Can't wait to get going on this project (maybe this weekend). I'm going to get a CF wing tube for it though since the aluminum one they provided appears fairly heavy for my liking (HK upgraded the tube from a 25mm to a 38mm tube, since some customers were experiencing failure of the original 28mm thin-walled tube).

I plan to use four (4) 5800maH 6s packs in a 12s2p configuration (11,600maH, 12s), along with a Castle Creations HV160 ESC and probably a 3-bladed Mejzlik 30" CF prop. It's a monster (will barely fit in my minivan) but should float like a kite. The expected weight should be around 28-30 pounds (my 89" A6M5 Zero weighs 28 lbs so this should be a joy to fly). I'll try to post some pics and updates as they occur... hopefully sooner than later!
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Post by chistech » Fri Jan 20, 2012 4:31 pm

Holy sh#t Tom, That thing is huge. If the battery lasts long enough maybe you can fly me over to Nantucket this summer! :lol:
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Re:

Post by admin » Fri Jan 20, 2012 6:58 pm

chistech wrote:Holy sh#t Tom, That thing is huge. If the battery lasts long enough maybe you can fly me over to Nantucket this summer! :lol:
LMAO... I'll have to check my wing loading and get back to ya on that.... ;)
Yeh... big,... certainly I won't get anything bigger... won't be able to transport unless I saw it in half! :lol:
Bob Pacheco

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by Neons » Thu Jan 26, 2012 10:08 pm

Wow! It's a monster. I would like to see this one fly. Mainly because it will be a quiet flyer. That motor is beautiful. The batteries will be able to jump some vehicles or arc weld with them. Gonna give kids rides? You are going to have some heavy wire and connectors there. A lot of amps. I would not want to get hit by that motor. :shock: Hambugers. Safety switch is a must here.
~~~~~~~~~~~~~~~~~~

Just looked at the specs on the motor and it needs a 200amp Esc. Big!. I watche a motor test on the ground and this Hungarian Extra fly here. He seems to have a smaller prop here. She revs and moves out.The specs are copied here.
Flight time: 6 minutes
9331 watts
8063 rpm
current 211,3 ampers
16,26 amper hours
Esc temp.: 50 celsius

2,7 meter size Wild Hare Extra 300
Electromotor: Turnigy Ca 120/70
Esc: Castle ICE HV-160
Batteries: 4x 5000 mAh 6S Zippy Flightmax
http://www.youtube.com/watch?v=WmEHWcMq ... re=related
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This one is an on stand test.
http://www.youtube.com/watch?feature=en ... wZckg&NR=1
Good luck on it.
**Neons** Bob
Bob Pacheco

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by tomapowa » Fri Jan 27, 2012 11:17 pm

Yeh Bob... that Wild Hare setup is almost exactly what I plan to do...
12s2p 5000maH, a HV160 ESC and a 28"x12 3-bladed prop (I think he used a 30"x12). Around 10 killowatts! :o
Just found out the motor is in US customs (from China)... awaiting its arrival so I can mill some stand-offs for the motor.
Just ordered servos for this beast... servos cost more than the darn plane! :lol:
Last edited by tomapowa on Sat Jan 28, 2012 11:44 am, edited 1 time in total.

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by Neons » Fri Jan 27, 2012 11:42 pm

The sound on that Hungarian plane video is real nice. It is not to loud and just has that hum to it like and inline piston engine. Real sharp.
Bob
Bob Pacheco

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by tomapowa » Sun Feb 19, 2012 11:39 pm

Well... finally got some progress done on the Sukhoi... Engine mounted, landing gear reinforced and mounted, plus a bunch of extras inside the fuselage (beefing up, center servo tray, etc... attached a few pics... 28x12 3-bladed prop looks big... well... it is big but... Gheeez! I hope this fits in my mini-van! :(
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photo11.jpg
photo13.jpg
photo15.jpg
photo16.jpg
photo17.jpg

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by Neons » Tue Feb 21, 2012 1:18 am

Quite impressive. nice to see you had time t get some progress on the project. All high quality stuff. Should be quite a site to see. At least you got some building in.
Bob Pacheco

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by tomapowa » Mon Mar 12, 2012 1:20 pm

Not much progress but some... designed a cool pulley-driven dual servo rudder tray... this is built around a cheap ($30) CNC'd aluminum dual rudder servo tray and bellcrank sold by Hobby King. No need to "match" servo throws, etc... pulleys even allow for one servo operation (i.e. fail-safe sort of if one servo stops working or becomes jammed). Milled myself two delrin pulley wheels, and each wheel has two flanged 6mm bearings. Other parts include two HK Digital 320 oz-in servos, two CF 4" servo bell-cranks, a main 5" aluminum ball-bearing suported bellcrank, Dubro HD 4-40 ball links and two milled stand-offs/blocks for mounting/raising the forward, offset servo.

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Sukhoi-Rudder-Tray4.jpg
Sukhoi-Rudder-Tray2.jpg

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Re: 101" SU-26 Sukhoi - 100cc Electric Conversion

Post by Neons » Sun Mar 18, 2012 8:50 pm

:shock: Holy crap! Where the heck you find all these gadjets? Pretty exotic.
Bob Pacheco

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