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"1/2 A" & "1/8 A" airplanes These are the small ones...more popular now than ever.

Small Pitts

Old 09-28-2005, 01:00 PM
  #26  
flyrcboy
 
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Default RE: Small Pitts

Hi Andrew

I like your 30 size pitts.
Old 09-28-2005, 03:32 PM
  #27  
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Default RE: Small Pitts

Good progress there Bipe! You've already done more than I have in a month! Looks nice too. Your Bipe-Stik is on the top of my stack right now. (that means a couple of months at least...)
Old 09-29-2005, 01:59 AM
  #28  
Bipe Flyer
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Default RE: Small Pitts

Thanks guys.

Got a little more done today. The bottom wing is installed and the turtledeck is done.
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Old 09-29-2005, 06:53 AM
  #29  
flyinrog
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Default RE: Small Pitts


ORIGINAL: ptulmer

Good progress there Bipe! You've already done more than I have in a month! Looks nice too. Your Bipe-Stik is on the top of my stack right now. (that means a couple of months at least...)
Yeah mines on the stack too near the top but my ADHD stack keeps changing so maybe I'll get to it before the May funfly...who knows we may get a good old fashion SMALL going here before too long.....looks good Bipe!.....Rog
Old 09-30-2005, 12:32 AM
  #30  
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Default RE: Small Pitts

The tail and firewall are pretty much done. I was going to build up the tail out of sticks, but I did that on my .46 size and it required flying wires and I managed to crack the rudder by nosing it over, so I went with a slab tail. I'm thinking about lightening holes, but it probably wont save much. The rudder and elevators have been tapered down to about 3/32" at the trailing edge.
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Old 09-30-2005, 05:01 AM
  #31  
mainegold
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Default RE: Small Pitts

Hey Bipe, are you planning on ailerons for this? None? 2? 4?
If you did cut lightening holes in the tail feathers, would you CA the edges to strengthen them? What thickness balsa did you start with on the tail?

When can we expect plans? You probably want to "test" fly this first though, huh?
I have a .30 4 stroke on the way!

Jack
p.s. did you cut your own foam for the wing or rob it from somthing else?
Old 09-30-2005, 05:33 AM
  #32  
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Default RE: Small Pitts

I suspect Andrew is still asleep, him being on the west coast of Canada so I'll make an educated guess for you and see how close I get.

Definitely a yes on the ailerons and I'll say he does 4. 1/8" medium balsa on the empennage and no lightening holes. He cut the wing cores from 1 lb. white foam on his home-built CNC foam cutter.
Old 09-30-2005, 06:21 AM
  #33  
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Default RE: Small Pitts

Actually, I'm up late and just going to bed now.[sm=tired.gif][sm=sleeping.gif]


You're pretty close Milton. Yes, there will be 4 oversize ailerons. The empennage is 3/16" light balsa because I couldn't find a piece of 1/8" without any warps. If I did cut holes, I wouldn't strengthen them with CA. The cores are NACA 0015 cut on my home-built CNC foam cutter.

I will make the plan available in some form. I'm making adjustments as I go and I'll need to test fly it first.
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Old 09-30-2005, 06:28 PM
  #34  
Wazmo
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Default RE: Small Pitts

May I ask where you got your foam cutting machine, or how did you make it?
Old 09-30-2005, 07:50 PM
  #35  
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Default RE: Small Pitts

I built the foam cutter using stepper motors, driver board and information from http://www.8linx.com/cnc/cnc.htm .
Old 10-01-2005, 03:44 AM
  #36  
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Default RE: Small Pitts

I'm not building a seperate cowl for this one. The front end will be shaped around the engine and the engine will be installed from the bottom. I cut a ring of 1/8" ply to hold the front together and there will be a couple of rings of 1/4" balsa that will go between the ply ring and the spinner, then sanded to shape. The supports for the cabane struts are 3/8"x1/4" spruce supported by 1/4" balsa sticks. The front top of the fuselage is sheeted with 1/16" balsa.

I picked up a nice Tru-Turn aluminum spinner at the LHS. Luckily it was on the 25% off rack and with the club discount I got it for 35% off. Including the mounting kit it still cost 4 times the price of a Dubro plastic spinner.
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Old 10-01-2005, 09:59 AM
  #37  
Dukester
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Default RE: Small Pitts

Yeah, but you have to admit it also looks nicer on a Pitts than a plastic spinner.

Duke
Old 10-01-2005, 12:39 PM
  #38  
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Default RE: Small Pitts

It sure does, and I've had a plastic spinner explode when a 4-stoke kicked back, so now I only use aluminum on 4-strokes. Maybe I don't have to, but it's nice to have an excuse.
Old 10-01-2005, 01:21 PM
  #39  
mainegold
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Default RE: Small Pitts

Isn't this a hot thread! First post was on 9/22 and already has 680+ veiws.
I can't wait to hear how it flies and see some pictures of s l o w low altitude flyby's!

Jack
Old 10-01-2005, 05:44 PM
  #40  
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Default RE: Small Pitts

Your right mainegold. I've been checking this thread every day to see Bipe Flyer's progress. I can't wait to read about its maiden flight and view the pictures. I hope Bipe Flyer post some plans so we can download them to tileprint and build this one.
Old 10-01-2005, 06:49 PM
  #41  
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Default RE: Small Pitts

I sure hope it flies now![X(]

I made the cowl front by first cutting a piece of 1/64" for the rear surface and I glued some washers over the mounting holes. I then built it up out a couple of pieces of 1/4" balsa and a piece of 1/8" balsa for the front. The whole thing is held on with #2 screws.
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Old 10-01-2005, 06:57 PM
  #42  
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Default RE: Small Pitts

flyrcboy,
Are you PB by any chance? I think I owe you some decals.
Old 10-01-2005, 06:57 PM
  #43  
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Default RE: Small Pitts

Very cool! Love those balsa cowls....


phil in georgetown (and denver)
Old 10-02-2005, 01:31 AM
  #44  
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Default RE: Small Pitts

The cabane struts are made from 1/16" aluminum.
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Old 10-02-2005, 05:03 AM
  #45  
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Default RE: Small Pitts

Bipe Flyer.....You are correct......flyrcboy is PB.....I have been trying to get in touch.........through email......
Old 10-03-2005, 05:59 PM
  #46  
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I sent you a PM with a couple of email addresses to try.
Old 10-03-2005, 06:02 PM
  #47  
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Default RE: Small Pitts

The cabane strut mount is made from 1/16" aluminum and will be glued into a slot on the underside of the top wing. The interplane struts are 3/32" hard balsa.

This is the part of a build project that I really like. When it starts to look like a plane.
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Old 10-03-2005, 11:53 PM
  #48  
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Default RE: Small Pitts

Looking good. Can't wait to see it covered.

Duke
Old 10-04-2005, 12:15 PM
  #49  
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Default RE: Small Pitts

Beautiful. What kinda glue are you gonna use for that aluminum cabane strut mount when you glue it into the wing? Just curious as I've never glued aluminum to anything before.

-Wayne
Old 10-04-2005, 12:20 PM
  #50  
Bipe Flyer
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Default RE: Small Pitts

I'm going to rought up an drill holes in mount and use either Polyurethane or Epoxy.

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