RE: One Tough FFF Delta...Build It!  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> Electric Aircraft Universe >> Foamies! - RC Electric Foam Aircraft >> RE: One Tough FFF Delta...Build It! Page: <<   < prev  1 [2] 3 4 5 6 7 8 9 10   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: One Tough FFF Delta...Build It! - 4/28/2006 9:21:45 PM   
coolbean



Posts: 1058
Joined: 7/6/2005
From: liberty, MO, USA
Status: offline 		"we also can set 3v/cell as your requirement. "

Do they mean that if you tell them to, they will set the cutoff at 3v before they ship so you don't have to worry about the programing card?

_____________________________

The cake is a lie.

(in reply to five-string)
       Post #: 26

RE: One Tough FFF Delta...Build It! - 4/28/2006 10:11:13 PM   
five-string



Posts: 1925
Joined: 12/2/2005
From: Nashville, GA, USA
Status: offline 		150% Mugi report...

Installed the bp-21 with a 7040 prop. She flies real nice. Lots of lift with that big airfoil wing. Hands off trimming. Should carry my digital camera well as soon as Wife lets me mount it. She's not real keen on my piloting skills.

Now working on a 100% version with the same power setup. It should really go as soon as I work out motor thrust angle. So far it wants to float at about 8', won't gain altitude even with full up elevator. Sits there with the nose pointing skyward, just won't take off.

_____________________________

Never, ever take a laxative and a sleeping pill on the same night.

(in reply to five-string)
       Post #: 27

RE: One Tough FFF Delta...Build It! - 4/28/2006 11:30:24 PM   
five-string



Posts: 1925
Joined: 12/2/2005
From: Nashville, GA, USA
Status: offline 		Coolbean, good point. That reply was to Grayson from his supplier. But ask Basil. He may do that. I'm going to set both mine to 3v as soon as my card arrives.

BP-21's are doing well on both mugis, 150 and 100. I angled the motor on the 100 up a little more in the rear and went from a 5x5 prop to a 6x4sport. Also had to seperate the rx and the esc. There was some glitching going on. It's gone now.

It goes faasst now, Zip, right into the tree. I climbed up about 10' off the ground into this tree and grabbed a dead limb about 10' long and managed to get it to fall to the ground. I think I got into some kind of poison oak or sumac. Figures. My arm is breaking out big time.


Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by five-string -- 4/30/2006 12:29:25 PM >

_____________________________

Never, ever take a laxative and a sleeping pill on the same night.

(in reply to five-string)
       Post #: 28

RE: One Tough FFF Delta...Build It! - 4/29/2006 1:37:26 AM   
smitty9306


 

Posts: 17
Joined: 3/29/2006
From: plymouth, OH, USA
Status: offline 		Ok guys I know Dean tried to explain it to me but I just cant get this foam bending down everytime I try to bend it it snaps.
Can you tell me what im doing wrong?
Jon

(in reply to five-string)
       Post #: 29

RE: One Tough FFF Delta...Build It! - 4/29/2006 2:36:50 AM   
five-string



Posts: 1925
Joined: 12/2/2005
From: Nashville, GA, USA
Status: offline 		smitty, I don't want to sound like a smartie pants, but you are using fan fold foam, right?

When I built my last one, a 31" Mugi, I had a small 1" break start at the TE tip of the wing. I flattened it back out (hadn't glued it yet) and put some hot glue over the break and pressed it together till it cooled. Then I continues the fold and it went perfectly.

What I do is draw the lines on the foam where the inside of my bend will be. Then I take a metal yardstick, any hard thin object will work, and stand it on edge along that line. Don't use anything that would cut through the foam. I press down repeatedly on different areas of the edge of the yardstick with my palms until I have a nice indentation along the entire foldline. Then I place the foam on the workspace with the foldline at the edge so I can use my hand under the foam to start pushing up on the foam while still pressing down on the yardstick on the line. I work it slowly along the full length of the foldline, folding upward slowly until I get it to a 90°. Then I usually move the yardstick out of the way and slowly continue to work it all down together, pressing on the outside of the fold now with my palms.

The fold ends up being more of a tight bend that an actual crease. The most important aspect is take it slowly and work the entire foldline, not just one spot.

Sounds more involved than what it is.

< Message edited by five-string -- 4/29/2006 4:09:30 AM >

_____________________________

Never, ever take a laxative and a sleeping pill on the same night.

(in reply to smitty9306)
       Post #: 30

RE: One Tough FFF Delta...Build It! - 4/29/2006 3:26:47 AM   
coolbean



Posts: 1058
Joined: 7/6/2005
From: liberty, MO, USA
Status: offline 		If you want a tight fold like on the delta wings here, what i read to do was take some packing tape (just the real thin stuff, not strapping tape) and run it along where the fold is going to be on the OUTSIDE. Then on the inside cut a 45 degree V where you want the fold. Then take something like a big dowll rod or marker and smash down the edges of the V you just cut. Then just fold it slowly. If it still wants to crack then you can apply some heat with a heat gun or a really hot hair dryer.

I didn't have to use any heat on mine and it worked great. Just fold SLOWLY. This stuff kinda smashes itself into shape if you let it.

Oh and if you are using FFF with the film on only one side, make sure it is on the outside.

_____________________________

The cake is a lie.

(in reply to smitty9306)
       Post #: 31

RE: One Tough FFF Delta...Build It! - 4/29/2006 8:59:21 PM   
dhpilot


 

Posts: 51
Joined: 1/7/2005
From: salisbury, MD, USA
Status: offline 		Hey String, The problem with the lvc may be a reset problem... ie; if you begin to fly with a fully charged lipo, fly for five minutes, land, UNPLUG, plug back in and fly, the lvc may recognize lower starting voltage and reset a lower cut off voltage... I dont know much about this stuff but its a theory... WN, I use a spray adhesive from 3M. Its light and easy to work with... AJ, Thanks for the compliment on the F-15 ! It flys pretty well with a Himax 2015/4100, 62T gears swinging an APC 9x6, TP 2100. Not quite full vertical, but close... fun flyer... As near as I can tell the first and only deviation from mugi in these posts was an f-15 question,and the second was some stupid comment about protocol ! was it really needed?? ... hmmmmm... I'm not trying to be a richard here but isn't that a touch hypocritical? Peace out! the mugi 150% quad ready soon!!!!

(in reply to five-string)
       Post #: 32

RE: One Tough FFF Delta...Build It! - 4/29/2006 9:12:38 PM   
dhpilot


 

Posts: 51
Joined: 1/7/2005
From: salisbury, MD, USA
Status: offline 		Hey String, how will you trigger the digital camera? I really want to get a MUGI camera setup... sounds like your100% MUGI is either tail heavy or maybe theres too much up thrust... or a combination of both... I think I saw a wing trim guide on northeast sailplanes products website... I'm gona check that out again for my 150!

(in reply to dhpilot)
       Post #: 33

RE: One Tough FFF Delta...Build It! - 4/30/2006 3:37:48 AM   
five-string



Posts: 1925
Joined: 12/2/2005
From: Nashville, GA, USA
Status: offline 		dh,

The comment about protocol comes from a good friend. I know how he meant it and I took it that way. It's cool.

The 150% camera setup...
I plan on building a frame of fff that my camera will fit snugly into and have a servo mounted on that frame to press the shutter button. I may put a second servo on to turn camera on and back off because my camera has a lens that telescopes out about an inch. And when it is turned off the lens retracts and little doors close over it. That would be extra protection if I have a rough landing. I will cut a small hole in the floor of the Mugi to allow the lens to poke down through for photos. Then ,like I said, the lens will retract inside the fuselage for landing. The fff camera frame will have some velcro on it and should make mounting the camera inside the mugi a matter of sticking the camera inside, hooking up the servo(s) to the rx and closing the hatch. Sort of a stealth spy mugi. I like.

The 100%...
I actually had too little angle on the motor. I had to push the propwash up more to push the tail down more. It would nose in quickly until I gave it much up elevon and like I said it would fly but with the nose up and would not climb out. Actually both mugis were doing this because of wrong motor angles. It is just the opposite of a front mounted motor that needs down angle to keep it from climbing excessively. Anyway, I adjusted it and now she scoots right away. It is very quick to handle, even on low D/R settings. It is nearly unlimited verticle, eventually stalling out but will climb very fast. It's going in the truck with me to Florida tomorrow.

_____________________________

Never, ever take a laxative and a sleeping pill on the same night.

(in reply to dhpilot)
       Post #: 34

RE: One Tough FFF Delta...Build It! - 4/30/2006 4:33:47 AM   
dhpilot


 

Posts: 51
Joined: 1/7/2005
From: salisbury, MD, USA
Status: offline 		Hey String, Sorry to you n AJ, didnt get the inside joke. Guess I was being the Richard... My apologies... I think I'll have to get a smaller lighter camera to take pictures. Well here it is; the MUGI 150 Sky Cruiser! kinda retro 50's ish impression of the future... And a pic next to the MUGI 100 Sniper to compare for size... (and the F-15 coming in for a low head on pass!).....a little trim, Ailerons, paint and radio and we'll see if this ship flies!!!

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to five-string)
       Post #: 35

RE: One Tough FFF Delta...Build It! - 4/30/2006 12:26:01 PM   
five-string



Posts: 1925
Joined: 12/2/2005
From: Nashville, GA, USA
Status: offline 		dn, no prob. Nice to know somebody's got my back.

I love your designs. You have a real knack for the unusual way of doing things. I really want to see some pictures of the Sky Cruiser in the air! Oh, man! It should be ballistic.

That photo of the F-15...I look at that and think I've got a long future in this hobby. There's so many planes I still want to fly.

Question on the Sky Cruiser: did you angle the motors at all? I've found my mugis won't fly hardly at all untill I point the engine's front down and back up just a little. I accomplished this with a small piece of craft (popsicle) stick under the bottom side of the motor mount to make the motor sit crooked on it's mount. It worked great on both mugis without having to readjust the whole mount.

< Message edited by five-string -- 4/30/2006 12:44:03 PM >

_____________________________

Never, ever take a laxative and a sleeping pill on the same night.

(in reply to dhpilot)
       Post #: 36

RE: One Tough FFF Delta...Build It! - 4/30/2006 4:52:53 PM   
dhpilot


 

Posts: 51
Joined: 1/7/2005
From: salisbury, MD, USA
Status: offline 		String, I tried to keep the thrustline true, 0 degrees on the ducted fan because I dont have propwash and outward torque just thrust, but on the 150 I have maybe 1 degree of up thrust meaning( because I get the terminology confused) the prop end of the motor angles up slightly. Is that what you've done with yours?and how much? Shew!! flight pictures are a hair raising experience...Jets,90 ,100 mph pass, handle the camera and transmitter...Hmmmm, you know that delay in digital cameras seems like a minute long!!! Arent you leaving for Florida? Safe journey to you.theres gotta be a rest area big enough to fly in somewhere along the way!! Peace,D

(in reply to five-string)
       Post #: 37

RE: One Tough FFF Delta...Build It! - 4/30/2006 5:02:08 PM   
dhpilot


 

Posts: 51
Joined: 1/7/2005
From: salisbury, MD, USA
Status: offline 		Here it is .meant to attach it to the last post... shutter delay!! D

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to dhpilot)