Esky King1-Tandem SeaKnight CH-46

[SteveTeo2]

Fantastic! 

[terence79chan]

Check out the Full Build Thread

wwwDOTrcgroupsDOTcom/forums/

showthreadDOTphp?t=858244&page­­­=2#post10290526

Note: Replace the DOT with .

[NewBraza]

how big? in mm

[terence79chan]

Fuselage is 580mm long, tandem is spinning 4x 190mm-blades, so it looks much bigger than a trex 450 in the air.

[vsci79]

Awesome Job!!!

That is all :-)

[edwin4759]

awesome job, i tried doing that in a cheap dragonfly heli and i made it fly too.. too bad i didn't make the body good enough and it didn't really fly as good as this one... but at least got the idea... good job mate

[HighFlyingHelis]

EXCELENT!

Well done mate, i love it!

[atiheli2010]

Hi terence79chan !! Very good work with this heli !! I'm thinking to do a tandem king 2, with dual motor too. So, my question is how do you synchronize both heads ? Is there a belt between them ? How can you be sure that front and rear blades don't crash one to other ? Thanks in advance !!

[terence79chan]

The King1s I'm using have a torque tube between them. Because of the short blades, both the rotors run a very high rpm, I'm not sure whether the King2 belt will slip under such circumstances. I did a dry-run (in my other video) to test whether the torque tube can hold up, you should do the same test for the belt. Please keep us posted of your results. King1 kits are very rare now so it will be great if we could use the King2 and King3 for this project.

[RailMon]

Well I'll go to the foot of our stairs! You deserve a medal for engineering this little beauty. I have the Walkera version and it doesn't have anything like the spritely performance this has. 5 stars.

[terence79chan]

Thank you for rating : ) It is definitely one of my favorite RC helicopters...it always brings back lots of fond memories whenever I look at it. I merely put together the heli and came up with the dual motors concept. the medal should go to the team at Tech-MP.. this thing won't fly this smoothly if not for their excellent TH2 mixer board which really is the 'brain' for the complex controls to the 2 eCCPM rotor heads.

[SupRec]

great !

[exiledconnections]

nice how does it turn properly having no tail rotors

[terence79chan]

It uses aileron differential to steer. -Turn L= Front rotor ailerons L & Back rotor ailerons R. Vice-Versa to turn R.

A HH gyro corrects the rudder signal input when detecting yaw motion. ie, when the rudder stick is sprung to neutral pos, both swash plates will dance like bottle caps dropped to the ground. When the gyro gain is spot-on, the swash plates stabilize v quickly so you don't see any tail-wag.

[bb7277]

hiilleiz:

Once again you are getting involved with something you know nothing about...

[kauaisfinest]

thanks for the info

[boywaimea]

where can you purchase kits like this? nice work incidentally.

[terence79chan]

Do a search for:

2x (hold rotation gear) EK1-0304,

2 x (main frame) EK1-0329,

1 x (torque tube) EK1-0336,

2 x (main shaft) EK1-0281

The remaining are king2 parts, they are easy to find.

[terence79chan]

Those king1 parts are still available at shopDOTrotorDOTcomDOTsg. : ) Throw in the king2 heads and main gears to complete the chinook kit.

[lazyboyalex12]

can you do aerobatics with it

[terence79chan]

unfortunately not, I didn't set any negative pitch on the rotors. A big loop may be possible if the fuselage is removed to save weight.

[wildhover]

incredible job building this thing

[gtokarsk]

Man! What a piece of work!

[hiilleiz]

its certainly better than co-axial.....

good job.....

produce more......of this heli...

it should be worth.......

hahaha

[terence79chan]

yeah, I could work out the dimensions off this bird and design a CF frame. The new CF model will use king2 heads and king1 torque tube and bevel gears. It should be HV(high-voltage) with a 6S setup! Perhaps 2 x 1300mah 3S lipo like the Outrage450 heli. That should keep the battery weight close to 2200mah 3S in the current model.

[chaingang90]

where in singapore can you get the normal heli that this body is from???

[terence79chan]

There's one on display in the toy shop at HarbourFront Cruise Center. :)

[wuqi25]

This is very good, do you stay near Sembawang area? I stay around there too, let me know if you need HBK2, HBK3 or Belt CP V1/V2 cheap.

[zapatavinix]

Bravo! You need to be a good pilot to do this!

[BooHeSha]

you are a true Artist! Congratulations! I think you could upload somewhere the plans for us to built this baby. I know that homemade models are a bit doubtful but wait... It's your creation flying over there! Oh yeah, that's the feeling! :-D

[omj624p]

Awesome. I was wondering how you were getting on with this project. So when can I buy one? :)

[terence79chan]

Thanks mate! It's so hard to make the first because I have to hook up a full tail-assembly to each rotor to make sure each is 'air-worthy'. And there's a hell lot of uncertainties along the way. Now that all that "R&D" are done and the feasibility test has passed, you could buy 2 King1 bare-bones and fix one up yourself in probably less than a week. If you like to get one that is off-the-shelf, I heard GAUI is releasing a scale micro EP tandem in a couple of months. :)

[junglist278]

nice job! what an accomplishment you should be very proud and relieved. keep up the great work.. you should have a sit down with the camera man. not to steady

[terence79chan]

The King1 heli has a shaft-driven tail, replace the tail assembly with another King1 main frame. As for the 2 brushless outrunners, they drive each main gear independently. Thanks to the one-way bearings, we can merge the outputs (varying speeds)of the 2 motors together to drive the shaft-train.

[stratosjoebar]

can you tell me how did you sync the rotors?