|Nov 02, 2008, 04:54 AM|
Windrider new BD-5J foamy jet (or pusher)
After 18 months R&D and 22 times amendment on the drawing, the tooling is almost done. Who want to try the beta version?
Wingspan: 32 inch
Lenght: 28.5 inch
Material: molded PN foam
EDF: 55mm GWS type with BL motor
Servo: 3 pcs Futaba #3017 or Hyperion DS-9
Control: aileron and full movement elevator
Radio: 3 channels
Battery: 1800 to 2200 mAh 3S
Remark: this ship can fly pusher or just glider
|Nov 02, 2008, 08:49 AM|
I will ,there are alot of guys including myself that have tried .we all love the bd5j. I gave up on my own design .but Ill try yours .do you have pics of the real thing.crtaylor
|Nov 02, 2008, 10:19 AM|
Just add the per-order of BD-5J on my website:
Total US$100 to ship worldwide by air parcel.
Kit included one GWS 55 EDF(w/o the motor).
Limited for 30 pcs only.
|Nov 02, 2008, 08:16 PM|
Have not yet thought much...might do a LSJS...or a Don's wicked motor.
Will probably ditch the EDF-55 and use a better fan. Might do the GWS housing and turn down a 5 blade Alfa fan to fit, though....
|Nov 03, 2008, 10:22 AM|
Ming, can you tell me if the thrust line of the fan ducting is parallel to the fuselage center line, or does it have the proper upthrust at the back (thrust line running lower as it gets to the wing and center fuse) to reduce the nose down pitch moment of the model when under power at low air speed?
Also, I was looking at the picturte of your modela nd noticed the shape of the Horizontal tail.
There is a widely distributed three view that has a delta shaped horizontal tail like your model, but it is actually incorrect. The correct shape is in the attached three view.
I guess it is too late to correct the shape of the horizontal tail in the tooling?
If so, I don't mind all that much, as it will be easy enough to build a correct horizontal tail. It would be nice if it was closer to scale right out of the box, though.
The larger tail area it provides would certainly help the handling of a small model like this, as well.
|Nov 03, 2008, 02:24 PM|
The thrust line and fan is parallel on my design.
It could be OK because use full movement elevator.
Plus the level between the wing and duct is closer on this plane compare to the real one.
See another drawing about the Horizontal fin.
All comment is welcome, I willing to amend the tooling if need.
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