PizzaBox w/ Fairing  
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 >> RC Airplanes >> Profile and Fun Flying Planes >> PizzaBox w/ Fairing
Page: <<   < prev  5 6 7 8 9 10 11 [12] 13 14   next >   >>  

Login
Message << Older Topic   Newer Topic >>
PizzaBox w/ Fairing - 7/5/2002 6:09:36 AM   
skola28



Posts: 11
Joined: 7/2/2002
From: Rolla, MO, USA
Status: offline 		Hey Dave and Friends-

I just got my PBF assembled and added a few touches... Although its first flying experience was 3 take offs and 4 landings (once in a tree, and then when we threw it OUT of the tree).

Just thought I give you some pics to spice things up... I'm going to paint it to look like a Big Stick with the Iron cross on the tail!

Attachments
Click to see fullsize image.
Click for fullsize



_____________________________

Junior

(in reply to ben flyn)
       Post #: 276

More Fairing - 7/5/2002 6:11:05 AM   
skola28



Posts: 11
Joined: 7/2/2002
From: Rolla, MO, USA
Status: offline 		Here is a close-up of the fairing/fuselage

Attachments
Click to see fullsize image.
Click for fullsize



_____________________________

Junior

(in reply to ben flyn)
       Post #: 277

Pizza box flying - 7/5/2002 9:00:47 AM   
Dave McDonald



Posts: 1327
Joined: 1/4/2002
From: Eldon, MO, USA
Status: offline 		JR,
Glad to see your PBF is flying already!

That fairing sure changes the looks of your PBF.

Are you going to be at the flying field on Sunday? We just might have to have a PBF Fly-In.

_____________________________

McDDD
ProBro 415

(in reply to ben flyn)
       Post #: 278

Funfly - Sunday - 7/5/2002 11:52:43 AM   
skola28



Posts: 11
Joined: 7/2/2002
From: Rolla, MO, USA
Status: offline 		Dave-

I'm surely up for a flyin, but I'm really going to be up for some combat with streamers... I'm gonna need you to 'tame' my pizza box b/c I can't quite get her to come in as 'smoothly' as I'd like... Thanks again for the kit!

Attachments
Click to see fullsize image.
Click for fullsize



_____________________________

Junior

(in reply to ben flyn)
       Post #: 279

PBF wing stifening - 7/17/2002 11:09:46 PM   
Ed_Moorman



Posts: 3701
Joined: 1/5/2002
From: Shalimar, FL, USA
Status: offline 		For wing stifening, try a carbon fiber kite spar. They are really stiff. The wife picked up a few for me at the local kite place for $3 each. She and No 1 son took some Coroplast with them and bought spars that are slightly larger than a flute.

I heated the Coroplast with my heat gun and soaped the spar and shoved it in. Seems to work very well.

_____________________________

Ed Moorman, AMA 553, KD4QBM, Revver Bro #156
R/C Report Magazine, Fun Aerobatics Column

(in reply to ben flyn)
       Post #: 280

Fiber Spars - 7/18/2002 2:13:38 AM   
skola28



Posts: 11
Joined: 7/2/2002
From: Rolla, MO, USA
Status: offline 		Ed Mooreman-

I did the same on my PBF and it seems to really help. The front still bends up when pulling up at high speed but the carbon straightens it back out. It also helps it bend UNIFORMLY which allows it to retain control better!


_____________________________

Junior

(in reply to ben flyn)
       Post #: 281

Pizza box flying - 7/18/2002 3:38:26 AM   
RC_Junky



Posts: 230
Joined: 12/11/2001
From: South West, FL, USA
Status: offline 		Where did you put them in at, and how many? Got a pic?

_____________________________

"Something will happen, it always does."

(in reply to ben flyn)
       Post #: 282

Rod Placement - 7/18/2002 6:40:16 AM   
skola28



Posts: 11
Joined: 7/2/2002
From: Rolla, MO, USA
Status: offline 		Junky-

I put the rod in the first flute of the Coroplast. I used a piece of scrap carbon rod from a different project so it left about 2 inches on each side which weren't reinforced. I'm pretty sure it won't matter much though since it never had a tendency to bend there before and the force moment is incredibly small...

Attachments
Click to see fullsize image.
Click for fullsize



_____________________________

Junior

(in reply to ben flyn)
       Post #: 283

A traditional PBF - 7/29/2002 8:50:43 AM   
RSands



Posts: 433
Joined: 3/15/2002
From: Toledo, OH, USA
Status: offline 		Read the thread last week at work (on lunch checked out the videos, and couldn't resist. Looks like it's gonna be a lot of fun! Mine's got a TT 42, 3 std. servos and a HS-85 on throttle. Tips the scales a little on the heavy side at 2 lbs 9 oz., hope this will be okay. I moved the CG to 6 1/4" back, and throws are ~ 45° on high and 40% of this on low, with 70% expo and 40% respectively. Sound about right? Got the TT running good today, now all I have to do is work for a week before I get to fly it!

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to ben flyn)
       Post #: 284

Pizza box flying - 7/29/2002 9:43:21 AM   
Dave McDonald



Posts: 1327
Joined: 1/4/2002
From: Eldon, MO, USA
Status: offline 		RSands,
Your PBF looks great! All your setting sound good too......except that 6" back is tail heavy......and 6 1/4" back will be even more tail heavy. 5.75" back is the "neutral" elevator trim CG for both upright and inverted flight with a nearly empty fuel tank.

If you're used to flying tail heavy fun fly types, then no problem! But if not, then you might want to start out with your CG at 5.5" from the leading edge.

_____________________________

McDDD
ProBro 415

(in reply to ben flyn)
       Post #: 285

a stronger pizza box - 8/9/2002 8:01:29 AM   
tcfireco



Posts: 103
Joined: 3/7/2002
From: Lockport, NY, USA
Status: offline 		hi all,

i live in Lockport NY and we just started flying the pizza box.
the only bad thing i see is that at high throttle the front tips
start to bend and they drag the plane down fast.
i have fixed that by using a 1/4 fiberglass rod zipped tied to the leading edge now you can climb at full throttle and do a lot more with the plane I am using a leao 25 and it has a lot of kick to hang it on the prod. I also found out it will not come out of an inverted flat spin till it hits the ground LOL just pick it up and start it and fly again.


thanks
dan


(PIZZA ANY ONE!!!!!!)

(in reply to ben flyn)
       Post #: 286

Pizza box flying - 8/9/2002 10:31:24 AM   
Dave McDonald



Posts: 1327
Joined: 1/4/2002
From: Eldon, MO, USA
Status: offline 		To get out of an inverted flat spin, neutralize the rudder and aileron, then quickly apply full power and full down elevator at the same time, making sure that the aileron controls are neutralized. If you're using a 9x4 on your 25, it should have plenty of power to get the PBF to instantly exit the flat spin and enter a tight outside loop. After flying through 1/2 of the outside loop, pull back on the elevator stick to get it flying right side up again.

< Message edited by Dave McDonald -- Aug 9 2002 3:36PM >

_____________________________

McDDD
ProBro 415

(in reply to ben flyn)
       Post #: 287

Carrier Landings - 8/9/2002 7:14:47 PM   
YLF



Posts: 115
Joined: 6/18/2002
From: Pittsburg, KS, USA
Status: offline 		I started working on my carrier landings last night with the PBF. I used the legs from a small folding table which basically end up being parallel bars 17" apart and about 4' long standing about 3' off the ground. Then placed a wire tail hook on the PBF and proceeded to hover/slow fly up to the bars and hook the tail as I slid over for a "landing" on top of the apparatus. That's the idea anyway. In reality, I was able to get stopped on the parallel bars twice out of about 20 tries and one of those tipped the bars over. But I think I will improve on the design of the "PBF landing platform (PLP)" and give it another try. I'll post some pics of the next attempt.

Mike
http://members.cox.net/ylf

(in reply to ben flyn)
       Post #: 288

Pizza box flying - 8/10/2002 10:15:59 AM   
Combat 20


 

Posts: 54
Joined: 1/23/2002
From: Fort Wayne, IN, USA
Status: offline 		Yes, I caught the fever and built a PBF, used an old sign which had a curve in it from leaning up against a wall. The curve simulated dihedral which I assumed might help - wrong! Removed most of the curve by adding a coro doubler along the leading edge, but some curve refused to leave near one trailing edge. Yes, I know washout on one trailing edge but not the other would cause nothing but trouble - it did. Flight was as erratic as before but the "FUN" was definitely there. PBF crashed while landing (flipped due to washout on only one side) and split an elevon hinge. I will rebuild and try again using perfectly flat coro. Here is a tip that readers may want to try. I used "Industrial Strength" velcro to hold the fuel tank, battery, and RX in place. Worked great. Using a larger than necessary piece of velcro for the battery allows you to easily change the CG. I purchased the Industrial Strength velcro in the sewing department at Wal-Mart. Another tip for routing the antenna: poke a small hole in the top of the corro, run the antenna wire down that hole/flute out to the wingtip. Then run the remaining length of antenna back into the wing about two inches from where the wire exited the wing (to avoid a coil effect). Push a small balsa wedge into the flute to keep the antenna from coming out. Thanks to whoever started this PBF thing - great fun!

(in reply to ben flyn)
       Post #: 289

Pizza box flying - 8/10/2002 5:44:47 PM   
James Goss



Posts: 181
Joined: 12/22/2001
From: Talladega, Alabama
Status: offline 		Combat20,

I have just started routing the antenna, as you described, on my last two PBF / Stamps I built yesterday. I agree that this is as neat an installation for the antenna you can possibility have. It is almost invisible and there is no antenna cancellation at all.

_____________________________

Visit my website at [url]http://nav.to/jgosscacc[/url]

(in reply to ben flyn)
       Post #: 290

Landing Gear? - 8/10/2002 6:51:48 PM   
gshepherd83



Posts: 50
Joined: 2/28/2002
From: Camden,South Carolina
Status: offline 		Can someone give me a close up pic of how they mounted the landing gear?? I just got done with a PBF with an all aluminum spine and engine mount, I used light weight stuff but this thing feels like a ton...I dont have any scales around.

Ryan

(in reply to ben flyn)