Ready for some more Cub lovin? Here is a golden oldie we dug up out of the HobbyKing-rainy-day treasure chest!
This J3 Cub features a super simple 3 channel design and dihedral wing, Perfect for floating about on the breeze and whiling away the time on a Sunday afternoon. If your Grand father flew EP, he would have flown something like this and complained all afternoon that back in his day, he had to wait over night for his Ni-Cads to charge!
This "Vintage master piece" is designed for a traditional 380 size brushed motor (which just about any modeler should be able to dig up from their parts bin to keep the cost down!) or alternativley the Brushed motor mount can be removed making way for a brushless bell motor such as the Turnigy 2408-21 1400kv. You will be required to fashion your own spacer for the motor mount just like in the "good old days" of modeling.
You will require two inexpensive 9 grams servos, a Brushed or Brushless motor, ESC, 7.4v 2S lipoly battery and your own transmitter and receiver to finish this model. Scale fans will notice that the windows have been left blank allowing you to choose your own custom shade of black to finish the model.
This price wont last and a stroll down memory lane does not get any cheaper than this!
Specifications: Wing Span: 950mm Length: 720mm Flying weight: ~500g Power System: 380s Brushes motor or Bell motor of your choice (Not included) ESC: 18A (Not included) Servo: 2 x 9 Gram Prop: 7" prop and 2.3mm prop adapter included Battery compartment size: 45 x 47 x 30mm
Required: Your own TX & RX 18A ESC 2 x 9 Gram Servo 2 cells 7.4V 500mAh 20C Li-Po
Somebody please: COG in MILLIMETRES. I have tried the 25% ish rule (33mm) up to 45mm and am sick of bending motor shafts. Comments on here seem to be anywhere between 25% and 70mm!!!Please somebody advise where YOU have personally (from experience, not a web based formula)found this plane to perform well. I have some prop saver mounts on order so will be using them for a while! Thanks
I bought this cub and ordered all the parts separately. I also bought the Hobbyking 6ch remote to fly this plane. However I am now having a problem getting any of my electronics to work, and I am unsure if this is because of the battery or my electronics. The battery I have is a Turnigy nano-tech 300mah 2S 35~70C Lipo Pack. Any Ideas what my problem could be?
I need to purchase a motor for my cub, as it did fly only 2 meters and i broke the engine shaft ,all my fault hope you can help .Regards Max Gilbert. also i am still waiting for my orange transmitter to arive
Max you are talking to the members here! True HK Admin do look in now and then but mostly HK leaves it to the members. So with any item you are waiting for, please contact Live Cs. With your motor. Well it did not come with a motor so what did you use. It is rated for a 380 class park flier motor. I put a 2822 with 2200Kv in mine. With a 900mah 11.1v Lipo and 7 x 4 prop, it flies like a dream. You can take of on short grass, even with the small wheels.
Swervyn both will work fine. This little plane is very forgiving. I put a 2822 with 2200Kv in mine. With a 900mah 11.1v Lipo and 7 x 4 prop, it flies like a dream. You can take of on short grass, even with the small wheels. Sure you can go too big but you can see the working range is vast.
Owen Milner as you can read above you has a large range to work with. I will have a look and say. So use D2822/14 Brushless Outrunner 1450kv (AUS Warehouse) (SKU: D2822-141450) or D2822/17 Brushless Outrunner 1100kv (AUS Warehouse) (SKU: D2208-17-1100) at the high end or FC 28-12 Brushless Outrunner 1534kv (AUS Warehouse) (SKU: FC2812) at the lower end!
Waterlogged, I got the 99 points on my first ever answer. I have bought something and am now awaiting a promotion. Note that I look up to people like you and to you specifically. I will continue to participate in the forum, but only making a dime for answering a question seems pretty hard. I think it will be worth it since RC aviation is a very valuable hobby. With best regards,
Although I wish I could say yes, I have never gotton the opportunity to own an RC plane. My knowledge comes from much research, and enjoyment of the hobby. I'm hoping that by answering these questions, I will get enough credits to get a plane from here. I have a camera on it's way to make some instructional videos also. You say I am still a standard user. How do I get a promotion? Do I have to pay? :(
Joseph I sadly would like to let you know, that as a standard user, you can not get credits for answers. Sorry. In fact you cannot even reply. So you need to buy something. Once you do you, will become a gold user. Then you can help.
Exactly the way you did it. Bought the bare minimum clevises, horns, hinges etc to make it as cheap as possible just so she could get on here and scam the forum. Never bought another thing since and only just joined she says and managed to get 3370 points already Gee most genuine Pro contributors manage 1500 to 2000 in 2 years except when people like this start playing around with your score. How long did it take you to get 99 points points Joseph. Gee your first question was just 9 days ago, that's pretty good for someone only using the forum for 9 days, 99 points
Hi cwfsc! I have a couple of points that should help you.
1) Make sure when you are balancing your plane, you have your battery in your plane. Balancing should be done with the plane AS IF IT WERE READY TO FLY. If not, when you put in your extra components, the CoG will be changed.
2) Unless you have a manuel or other reliable source of reference, I would recommend balancing from 30%-33%. This will make for a safe, controllable experience, especially for a high wing.
If you still see that your plane is tail-heavy, RESIST THE URGE TO TOSS IT IN THE AIR ANYWAYS *) You'll thank me later. You can move your battery closer to the aimed CG. This will make it so you don't have to put on more sticky-lead weights. Make sure you stick them on as far-back as possible, to reduce the amount of weight required to be added. Happy flying!
"Interesting" response from Joseph. Thnak you. The plane is designed for in-runner motor. I used an old out-runner motor from my de-commissioned AXN Floater for this J3. The out-runner is much lighter. Even I added so much weight at the front, the tail was still too heavy. Hence, I removed my added CF from the rear (to reduce few g from the rear)* cut the battery compartment and pushed a Turnigy 1800 2S up to the front. My plane is flying well now. Regards
Well done. Yes I have use a Outrunner in my old J3 too. That motor has much more power than the one it came with. I also did something similar to mine, as you did. Mine has been on the Shelf for a few years. I should toss it, maybe one day.
Please Levi do not credit me for this. It would get me in so much trouble with waterlogged. You are in the International Warehouse listing. This is the main one. Great prices but postage is a bit higher.
Hello, is it good for beginner?
1.) what prop and motor for good slow flying?
2.) what battery for this model? I cant find with right dimension.
3.) if i stop controll, come it back to horizontal position?
4.) can it do STOL? What can i use wheels?
5.) it can landing to water? With what?
6.) how slow can fly?
Please owners, send more videos with flying.
Ivica so many questions. If you want answer try asking them one at a time! (3) This was my first plane and if she is going down, just letting go of the controls will not save her. (4) Please it is a Trainer. It is better hand launched. The wheel are small and unless you are taking off and landing on a hard surface, they will get stuck in the grass!!
Prop and motor question? I have the old stock brushed setup from a Hobbyzone Super Cub. It has the gearbox as well. I was wondering if this would be a good match for this smaller plane? If not, I do have an Eflite 400 and 450 as well, but would imagine both of these could power this plane without wings. Any ideas?
Thanks. I used what I had...an Eflite 400 with a 10x4.7 slow flyer. Thing has way too much prop torque and is hard to control. But hey, I figure if I can keep this thing from rekitting itself I can fly anything. :-) I am going to try a smaller faster prop and see if that helps. On the plus side, it truly has unlimited vertical!
I have aan EMAX 2812(1500KV) and 8X4 prop. On power up on the ground the model wants to turn sharply left - engine torque I am told. Hard to take off if it keeps wanting to go left. Any suggestions?
As long as you have a motor mount to suit I can't see any reason why you can't use that motor. You can make it as many channels as you tx and rx will allow. As long as you are ready to cut the ailerons and hinge them plus fit the servo and hardware, go for it. The only problem you might have is the aft strut getting in the way. You may have enough room for shorter ailerons or simply move the anchor point for the strut. That's the fun of this hobby, changing things to suit what you want.. Good luck.
There is a big space behind the motor, I cut away some of the foam between battery box and this space. 1000 3S then fits nicely through into this hole. It takes a bit of cutting (I use an old soldering iron), space should be big enough to fit a 1300 3S.
FC 28-12 Brushless Outrunner 1534kv
Turnigy 1000mAh 3S 30C Lipo Pack
HK15178 Analog Servo 10g / 1.4kg / 0.09s
APC style propeller 7x6-E
I use these, all from hobbyking. I had a propsaver , but if you want, you can get one from hk.
You should purchase a prop adapter and a prop, as the included ones are a bit ***r quality. The battery compartment is small, but you can modify it without problems, really easily. I use a 3s turnigy 1000mah battery. cheers
ya today is the 17th i placed my order on the 10th in the morning, just talked to cs they have no idea why it has not shipped said they would get back to me as soon as they know which means two or more days i should start getting my plane'
s elsewhere be worth it instead of waiting 30days to get it.after they decide to ship it it will be 14 days before i see it.
Oh what a load of rubbish. The only way something doesn't ship is if you bought and paid for it knowing it was out of stock.In fact HK stop you from paying for some items if there is any doubt of it coming back into stock. I think you exaggerate a lot. 3 months, sounds good doesn't it As for spitting the dummy over 7 days. You would have received a warning that the plane had to be picked up from the JIT warehouse then sent to the main warehouse and matched up with anything else you bought. One day to do the paperwork for JIT, anything up to 6 or 7 days at times to send it to the main warehouse and a few more days to pack it all up. I'd say you're complaining way too soon. Go to somewhere else faster in China and pay double or buy from your home country and pay triple.
don't give Kellyann credits, they are Indian scammer taking money away from real HK customers.
1 thumbs up!
Model arrived with a cracked fuselage which I had to reglue before starting assembly - this is why I gave quality as 2 stars, otherwise it would be 3 stars.
Assembly was fairly straightforward and there were no problems. Landing gear, wing struts and tail pieces seem to be decently designed and made.
The centre of gravity is 25pcnt back from the front edge of the wing - measure for yourself and find that spot, because with a 24g Hextronik 1700kv outrunner and Flightmax 1000mAh 3-cell lipo placed underneath the battery compartment and landing gear the CG is still not forward enough. I would suggest cutting a hole in the forward bulkhead of the battery compartment and pushing your lipo all the way forward to get the right CG.
All up, a decent 3-ch plane well suited to learners... just so long as they have someone to set it up properly for them.
Cheers - boingk
8 comments. Reply..
Excellent Model. My Model arrived with perfect quality - 5 stars, I have assembled it for a short Time without any Problems. I recommend this Model.
I have used: TowerPro Brushless Outrunner 2408-21, 2 x Servo Turnigy 1800A Servo 8g/1.7kg, Turnigy nano-tech 1000mah 3S 25~50C Lipo Pack
15 comments. Reply..
This is the first "foamie" I have ever built. I have been a scratch builder for over 50 years using real engines. I have to say that this little plane is a quality piece, I am amazed, it took me a while to put it together and do the wiring (old dog - new trick) I have not flown it yet but am looking forward to later this week. I will post flight info as soon as available. To say I am impressed is an understatement and it seems to me a great value as well.
No comments. Reply..
para quem quer iniciar esse eh perfeito, estou usando um e-max 2822 1200kv e uma lipo 3s de 1550mah pois nao tenho uma menor... tem uma autonomia de - 40min com acelerador 40/50pcnt... esse aero voa sozinho... muito bom mesmo... e chegou aqui em presidente prudente-sp - brasil muito rapido e em perfeitas condiçoes, o unico problema eh que fui taxado em 57r$.. mas valeu cada centavo....!!!
10 comments. Reply..
Excelent Model. I become this Model 1 Month ago. I haven't any Problems and Cracks with the Delyvery. For my Model I used all parts from HobbyKing. ESC: TURNIGY Sentry 18amp with Batery Rhino 610mAh 2S 7.4v 20C, Motor: TowerPro Brushless Outrunner 2408-21, APC style propeller 7x6-E, 4 Servos: MicroTGY-1800A. I used 2 Servos for Aileron. 1 Rudder, 1 for Elevator and OrangeRx R610 Spektrum DSM2 6Ch 2.4Ghz Receiver. This is one excelend little Bird.
I can only say: Tank you HpbbyKing.