Title: Scratch Build Ezfly 3Ch Trainer Post by: Subir on June 16, 2011, 06:20:17 PM Hi everyone
Just finished the EzFly 3Ch Trainer, it is a pusher prop so chances of breaking the prop. It is made of 10mm BioFoam and the electronics are Turnigy 2730 Brushless Motor 1500kv Turnigy 10A Plush Brushless Speed Controller 2 x HXT900 Turnigy Nanotech 1000mAh 3S1P 20C The plans are at http://www.rcgroups.com/forums/showthread.php?t=1174874 The electronics for this plane are available as a combo at www.rchobbyaddict.com which also include the push rods, horn, clevis and prop will maiden it on sat and let you k now how it performed Regards Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: PankajC on June 16, 2011, 11:01:56 PM Hi Subir,
All the best for the maiden. Looks neat Pankaj Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: akky on June 16, 2011, 11:34:12 PM i see alot of drag best of luck for the maiden
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: rajathv8 on June 17, 2011, 09:22:48 AM I think its better to sand the leading edges to a curved shape.
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: abhay on June 17, 2011, 09:26:11 AM +1 to rajathv8
you should sand the trailing edge as well.. can do the same for rudder,elevator as well. Title: Re: Scratch Build Ezfly 3Ch Trainer maiden flight Pic Post by: Subir on June 21, 2011, 09:52:27 PM The plane flew beautifully perfect trainer
Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: SunLikeStar on June 21, 2011, 09:57:49 PM Congrats on the maiden! Your plane looks beautiful :hatsoff:
Was it very loud? Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: adyonfire4 on June 30, 2011, 06:46:10 AM Sir you had posted in my thread ,The plane looks good whats the total cost of making it also i am very familiar with corelDraw but presently my PC doesnot hv it-
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: Subir on June 30, 2011, 09:04:59 AM It had very less noise compaired to other electrics i have i waspurring like a kitten. ;D
Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: Subir on June 30, 2011, 09:08:25 AM The total cost of making the plane. hmmm.
2 sheets of 10mm biofoam Rs 500/- getting it cnc cut Rs 500/- 2 tubes of fevicol decoration glue Rs. 50/- and lot of patience :P you can skip the cnc cut and cut it yourself and save 500/- so total cost 550/- Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: naatumach on June 30, 2011, 10:02:24 AM Sir
I was wondering, if you can get a cnc cut depron. Why dont you try to make a wing with a "Proper" well defined airfoil instead of KF airfoil. If i had access to a CNC i would try out all the aerofoils i could. Great job on the a/c Title: Modifications to Ezfly 3Ch Trainer Post by: Subir on June 30, 2011, 10:30:55 AM Just made a few changes to the plan and increased the size of the wing to 39inches to give it more glide.
i was getting abt 9to 10 min on a 1000Mah 3S 20C lipo, i increased the wing to get a longer flight time. i have attached the pics with the mod. Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: Subir on June 30, 2011, 10:34:20 AM you cannot get a airfoil cut with a cnc router you need a cnc hot wire cutter for that ,
which sadly :banghead: i don't know where to get it done the only option is to make a hot wire bow and do it myself. Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: naatumach on June 30, 2011, 11:30:34 AM what does the cnc router cut? I am guessing it cuts the shape of the wing from the top.
If that is the case then it is possible to cut out various profiles and join them to form a wing like the way it is done in balsa, using ribs. Cut the ribs using cnc? Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: Subir on June 30, 2011, 11:34:32 AM cutting anything is possible with cnc router except the aerofoil design, you can make it using the method you described.
Subir Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: naatumach on June 30, 2011, 12:14:39 PM i could if i had access to one.
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: Rahulvyas on October 02, 2013, 09:57:41 AM any flight videos?
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: abheekg on February 17, 2014, 01:26:30 PM Dear Sir
In continuation to the pms that we have exchanged I am posting this query on your thread to help future builders get new ideas. As I have already communicated to you I am contemplating building this plane for a beginner. The design that I have in my mind is sandwiching a layer of foam between 2 layers of corro for the fuse and use corro for the wings keeping the wing size to 39-40 inches as per your design. I understand that the overall weight of the model will increase if corro is used which will mean a relook into the electronics. What is your opinion of such a sandwich design ? best regards, Dr. A Ghosh Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: utkarshg13 on February 17, 2014, 06:44:30 PM Looks neat..
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: rj varun on March 31, 2014, 06:27:57 PM Please help me in choosing my first plane..I have two planes in my mind easy star and moss box plane.
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: utkarshg13 on March 31, 2014, 06:33:51 PM @rj varun. Please stop posting same thing on others thread. I'd replied you in one of the thread "Moss Box". Kindly go through it once and then move on.
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: thella on October 08, 2015, 01:03:45 PM are there steps how to build?
Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: kamalsahai on October 11, 2015, 06:32:24 PM kindly intimate what is weight of total setup
kp Title: Re: Scratch Build Ezfly 3Ch Trainer Post by: learner on October 12, 2015, 09:13:08 AM depending on the build material used the AUW can be between 7Oz to 10Oz.
i built one with 6mm depron, I ended up at 10Oz, if you can get EPP(somehow) then you can easily manage within 8 Oz with standard RC gear. |