F18 with twin EDF/BDF Options

[Grifflyer]

Ya I built one a month or so ago. Scaled it up to 54" and designed some LG that uses RC car shocks. It's using the power system from my now deceased tundra.

Do you have a pic of the LG? Is it a trailing arm setup?

 

[The Hangar]

Ya I built one a month or so ago. Scaled it up to 54" and designed some LG that uses RC car shocks. It's using the power system from my now deceased tundra.

Oh, I remember you talking about doing that.

 

[whackflyer]

Do you have a pic of the LG? Is it a trailing arm setup?

I don't have any pics, but it's set up much like the Pilatus Porter, except the main struts attach to the corners of the fuse instead of in the middle.

Currently the shocks are not quite stiff enough even with 80 weight oil and the gear splays slightly when taxiing. It really soaks up the high alpha landings tho. Not a big deal my OCD just bothers me about it🤣overall it's a very fun STOL plane.

 

[whackflyer]

I don't have any pics, but it's set up much like the Pilatus Porter, except the main struts attach to the corners of the fuse instead of in the middle.
View attachment 153863 Currently the shocks are not quite stiff enough even with 80 weight oil and the gear splays slightly when taxiing. It really soaks up the high alpha landings tho. Not a big deal my OCD just bothers me about it🤣overall it's a very fun STOL plane.

This still pertains to a BDF F-18 right? 🤣😉

 

[The Hangar]

@whackflyer I want to see video soooo bad!

 

[The Hangar]

This still pertains to a BDF F-18 right? 🤣😉

Oh, totally!

 

[whackflyer]

@whackflyer I want to see video soooo bad!

I wish I could show you too! I don't have anyone to take video for me and no way to take it myself. You could do it to your own bushwacker and see for yourself how awesome it is tho.

 

[The Hangar]

I wish I could show you too! I don't have anyone to take video for me and no way to take it myself. You could do it to your own bushwacker and see for yourself how awesome it is tho.

Do you have a phone? A static cam works pretty well. Here's what I got with my mini edge after propping the camera up:

 

[whackflyer]

I do have a phone but sadly am not supposed to use it's camera (I know, sounds wierd, but there's a reason). I wish really badly that I could show y'all tho. I'm sorry I can't.

 

[chris398mx]

John said 2207 the radial quad motor.

On youtube he replied 2208, maybe it was a typo.

 

[ScratchBuildMast]

On youtube he replied 2208, maybe it was a typo.
View attachment 153867

Mabye

 

[Splinter189]

@Splinter189 could you provide us with some thrust estimates for the 4s BDF? What prop sizes, motor KV etc. Is the thrust from one of these similar, more, or less than a 70mm edf?

Ben might be the one to ask, he test how much thrust they put out. I still have not settled on a motor set up I really happy with. Currently waiting on some new motors from China.

 

[mach1 rc]

Hey @Mid7night can you give us some thrust and spec measurments on the new bdf for the master series?

 

[Mid7night]

The BDF (current size) is based around the 22xx sized quadmotors and 4" diameter props. They are not as "powerful" as a 70mm EDF, but they are more EFFICIENT. A 4" BDF is about the size of a 100mm EDF, but runs on a 35A ESC, whereas a 100mm EDF is gonna need at least a 80-100A ESC. It's not designed to be an EDF "competitor", but rather an alternative.

I don't know the absolute thrust numbers, since it varies based on motor a prop combination. In some of my own testing I've gotten around ~2.3lbs of thrust installed. That was using FT Radial 2207-1750 motors on 6S with 4x4x4 props. Overstreet is experimenting with slightly larger 22xx motors, different Kv ratings and 4S as well as 6S, and he's getting some better results. The 'final' numbers will still vary, but when they release as a Power Pack I'm sure they'll have specs to go with it.

 

[whackflyer]

I think we need some mini sized BDF jets running gremlin motors...

 

[The Hangar]

I think we need some mini sized BDF jets running gremlin motors...

+1

 

[mach1 rc]

I think we need some mini sized BDF jets running gremlin motors...

That would be awesome!!!

 

[ScratchBuildMast]

Hey @Mid7night and/or @fliteadmin do you guys have any clue as to when the BDFs will be released???

 

[chris398mx]

Hey @Mid7night and/or @fliteadmin do you guys have any clue as to when the BDFs will be released???

If you have access to a 3d printer, I have a design for the housing I can share with you. It works on Grifflyer's GrunJet.

 

[ScratchBuildMast]

If you have access to a 3d printer, I have a design for the housing I can share with you. It works on Grifflyer's GrunJet.

Well, my library has one, so yes, I guess I do... Thanks!