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All Forums >> RC Airplanes >> Profile and Fun Flying Planes >> Build your own PBF (Pizza Box Flyer, Flying Pizza Box)
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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 3:23 AM   
vanman



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From: Forsyth, MO, USA
Status: offline 		The dipping up and down (porpoising) is caused by it being to tail heavy. If your CG is in the right location add some nose weight and it should straighten out. They will fly straight, fast, and FUN

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 6:14 AM   
OldRCer


 

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From: Suffolk, VA, USA
Status: offline 		BUCKETOBOLTS
I would like to know more about your 18X18 PBF.
Is it 2m or 4m , what size servos. I haven't flown anything smaller than 24X24 but I'll bet it is fun.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 8:31 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		been out flying mine all morning...10 flights it really is an amazing thing...going to try some wire struts/gear on nose and see if i can hover land and keep engine running then take off again../.hover and go ?...
Able, there is tons of info in this therd and lots of pictures it is worth reading....c.g. is 5 1/2 inches behind leading edge... a 25 is perfect for the 24x24 size. good luck

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 8:49 AM   
Flypaper 2



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A little advice, make the gear wires a little longer than normal. After the tail touches down, the nose drops down hard. so the extra length helps. LG sure makes it easier on props. Extra weight doesnt seem to hurt. My 25FP still hovers on 1/2 throttle.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 9:01 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		Flypaper,
thanks i will....only.... whats normal with these things ?gear long enough to keep at 45 degrees you think ? going to make the 1st set out of coat hanger wire to see what happens.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 9:15 AM   
m.gramling



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From: Atoka, TN, USA
Status: offline 		Can somebody post some good close up photos of how you put on the landing gear.

I would like to go w/ landing gear to keep from breaking so many props.

today i broke 3props on three flights. thats $7.50 other than the motor, and radio, thats more than i got in the entire pizzabox. I had my prop set to where I thought they wouldn't break. Not counting when i hit the tree. I can see how this thing could get real expensive if I keep breaking props every flight.

Right now my CG is at 5.75" so adding a little weight up front w/ some landing gear would help it out.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 10:00 AM   
BUCKETOBOLTS



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From: Salisbury, NC, USA
Status: offline 		I believe it is 3m. This stuff comes of the top of the pallets of aluminium sheeting we get at work. I used hs81's and a hs55 for throttle. The battery is a 150mah with a 2oz fuel tank. I made the elevons 2 1/2", and on my next one I think I'm going to go up to 3". I smashed this one Sunday after a control horn came off of a elevon. It would still putt-putt around in a circle and hovered for a bit. Until it fell out of a 8ft. hover on its back. The one elevon wouldn't roll it over fast enough.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 7:52 PM   
Flypaper 2



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From: Kingston, ON, CANADA
Status: offline 		I don't think coathanger wire can take a joke. I use 1/8 piano wire bent into U shape and screwed to ply motor mt with nylon gear straps. From ply to wheel hub is 8 ins.If I ever get this @#$% digital camera to work on the web I'll send a picture.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/2/2003 11:38 PM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		Flypaper,
after the post i thought about it...just came back from hobby shop with the music wire. will bend it up and install tonite after work. will try to post a picture tonite.....

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/3/2003 4:45 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		ok.here is my 3/32 wire "touch down gear"[IMG]http://[/IMG]

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/3/2003 5:04 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		well guess that didnt work very well....have to learn how to attach images

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Landing gear - 1/3/2003 7:10 AM   
toywizard



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Status: offline 		I used standard airplane wire landing gear. The ones that have the bend at the top and use plastic clips to hold them into the balsa.
I saved a set with the mount from a now deceased tree dodger. LOL

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FOR PACHUCOBRO - 1/3/2003 7:14 AM   
Slowbatics


 

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From: WHATELY, MA,
Status: offline 		REPLY TO POST #449

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FOR PACHUOBRO - 1/3/2003 7:16 AM   
Slowbatics


 

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From: WHATELY, MA,
Status: offline 		PBOX W/ OS 46

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FOR PACHUCOBRO - 1/3/2003 7:19 AM   
Slowbatics


 

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From: WHATELY, MA,
Status: offline 		PBOX W/ OS 46

DID YOU GET THE EMAIL?

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pbf landing gear - 1/3/2003 9:11 AM   
GaryV


 

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From: Stuarts Draft, VA, USA
Status: offline 		This gear works good for me.

As you can see in the picture I cut the corners off, I measured over 2" from the edge and cut at a 45 deg. angle.

I took a 36" length of 1/8" music wire and ran it all the way thru the leading edge. Then bent it down 90 deg. and out to mount the wheels on. It is 5 1/4" from the leading edge to the axle center. I used Dubro 2 1/4" mini lite wheels.
The braces are 3/32 music wire, they slide in twelve holes back from the leading edge. They go into the coro abuot 4" then are bent and silver soldered to the main leg.

I have 2 1/2" clearance with a 9" prop.

I should have made the first bend right against the coro this would have given me another 1 1/2" prop clearance.

I haven't broken a prop yet, but have had it touch the ground and kill the engine.

The plane has hit the ground hard enough to bury the engine up to the leading edge with no damage to the gear.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/3/2003 9:21 AM   
GaryV


 

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From: Stuarts Draft, VA, USA
Status: offline 		Hers is a overall view.

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Thanks, BCHAGGY2! - 1/3/2003 9:29 AM   
PachucoBro



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From: Dallas, TX, USA
Status: offline 		I saw the pics and got the email. I think where I went wrong was I wanted to keep the control rods short and mounted the elevon servos too far back. I will re-design my PBF and go ahead and take the time to make wood/dowel extensions. I wanted to be quick about it and I used just straight metal wire, hence wanting to keep the lengths short.

My PBF seemed to be way too tail heavy and adding weight to an already motor-ladened square piece-o-plastic seemed not the way to go. My pics are still viewable under this thread on Page 8 - Posts 141 and 142.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/4/2003 3:42 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		ok...sorry to bore you guys...lets see if my "re sizeing works.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/4/2003 3:50 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		WOW...thanks to info on other threads i was able to figure out the re sizing deal...your in a lotta trouble now! and i guess an old dog can learn new tricks....here is the under side of "my gear". will try the hover and go tomorrow

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Weights ? - 1/4/2003 5:59 AM   
toywizard



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From: Groton, NH, USA
Status: offline 		Nice PBF's guys!

What are yours ending up for weight?

Mine is at 2 lbs 12 oz total with mt tank.

I used Bluecor foam instead of Coroplast.

I have five servos full size (ailerons, elevator, rudder & throttle).
500ma battery

.40 OS Max FP

Have not flown it yet. Need to wait for snow storm to end. (too windy) LOL

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/4/2003 6:28 AM   
Flypaper 2



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Great minds think alike. I tried mine that way first and it just fell over on its nose, to much drag, needs a set of skins.

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Gord
Dreamed I was a muffler. Woke up exhausted.

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/4/2003 8:33 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		Flypaper,
its been windy here,i can hold my pbf in the wind at the same attitude as the picture on the table. Thought i would just "set it down" like that on the field. we will see tomorrow.If not will more than likley remove the wire. we have nice tall grass to drop in. only break props when i get "crazy" at low altitude.

Toywizard,
can you post a picture of your foam pbf? sounds interesting. would like to here how it performs. Dont have a clue on my flying weight.OS 25 hovers it at half throttel...guess its ok

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Build your own PBF (Pizza Box Flyer, Flying Pizza Box) - 1/4/2003 8:39 AM   
Hacker



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From: st. augustine, FL, USA
Status: offline 		Toywizard, i forgot...dont worry about the wind, we been flying this thing in 20 mph wind....just hovers along...backwards at 20! hand launch is very scary in the wind...i always yell "fore"

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Bluecor PBF - 1/4/2003 8:52 AM   
toywizard



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From: Groton, NH, USA
Status: offline 		Its a little busy but.......

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