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Del Toro 40

Discussion in 'Single Wing Aircraft Plans' started by TigerPilot, Jun 24, 2013.

  1. TigerPilot

    TigerPilot Well-Known Member

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    This project started out in CoroPlast. Since it's a DELTa and made of cOROplast I just called it Del Toro, 'from the Steer' in Spanish. It flew very marginally with a .46 engine but flew very nice with a .60. That was in my Dominican Republic days. Now I'm back to 'civilization' I'm flying electric and it was time to build the Del Toro in foam board.

    I built it after I saw the FT 3D from FliteTest here http://flitetest.com/articles/ft-3d-scratch-build. I used almost throughout the same building technique I just adjusted to suit the need for this plane. Since it's bigger I used two spars. Also, they made the spar all out of foamboard, I made the centers from 5mm ply.

    I have a battery hatch on the drawings. With the motor and prop I used originally it was necessary to put the battery in the back.

    The main wheels are made form 1" blue or pink foam. They are 3" diameter.

    The latest mod, not on the drawing, is a tail wheel rather than the foam skid as on the drawing.

    Unfortunately I have no video for the build nor for the flying. I have no camera person.

    I used this motor originally: http://www.hobbyking.com/hobbyking/...D3542_4_1450KV_Brushless_Outrunner_Motor.html

    I used this prop originally: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=22431

    I used this ESC originally: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18006

    With this combination the plane takes of in abut 3' into a vertical unlimited clime. It flys perfect in 1/2 to 2/3 throttle and at 3/4 it will clime vertical.

    I used a 3s 2200 25c lipo. It gets very warm very fast and the flight lasts only two or three minutes at anything more than 1/2 throttle. I should get higher amps and higher c's battery.

    I subsequently tried this motor http://www.hobbyking.com/hobbyking/store/__6247__hexTronik_DT750_Brushless_Outrunner_750kv.html with a 11x4.7 and a 10x4.7 props and it flys but is kind of marginal at best.

    In a windy day it will hover. I had it hover a few times. Overall it just a great flyer. It's not a 3D but if the control surfaces where made bigger I'm sure it will 3D with no problem with the bigger motor. A bigger battery will not have a big effect on the flight characteristic because of the big wing area.

    Use the CG as on the plan for the maiden flight. After that the CG can be farther back as you like it.

    I used 1/16 bit for the cutting of the foam and the plywood.

    100_0622.JPG 100_0620.JPG 100_0619.JPG 100_0618.JPG 100_0574.JPG 100_0579.JPG
     

    Attached Files:

  2. TigerPilot

    TigerPilot Well-Known Member

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    The long spar should be started at the tip and then an extension added to be cut flush with the root tip. Cut the joint in a diagonal.
    A second layer should be started at the root and terminated at the place where the second, rear, spar buts against the main spar. This will be done to both sides of the wing panel. The other wing panel is build identically but mirrored.

    The short front ply spar gets glued into the fuse before the wing gets installed. The long rear ply spar gets glued into one wing half like they show in the video on FliteTest.

    The fuselage gets glued, as the icons show, with the side panels on the outside. The canopy gets glued, as the icon shows, with the side panels on top.
     
  3. TigerPilot

    TigerPilot Well-Known Member

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    Update: I swaped the DT750 with a DT1000 and the performance increased by a lot. I'm not sure if the battery life is longer with this motor than it was with the D3542. It took a while for the D1000 to arrive and I kind of got used to the low performance and had fun with it.

    BTW, I forgot to mention in the OP. I have a 3mm carbon spar in the stab, just in-front of the hing. It may not be needed but I wanted to be on the safe side. If you don't want to put it in take out the cut-lines.
     

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