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-   -   Bitty bipe (http://www.Wattflyer.com/forums/showthread.php?t=72909)

hkeelljr 01-02-2014 05:11 PM

Bitty bipe
 
Haven't really started on my bitty bipe yet, although I've cut out the ribs for both wings. But on the plans it shows the elevator halves controlled by split push rods. Would it be ok just to join them together and use a single push rod? In other news missed the deadline to submit photos of my contester build to MAN, oh well, I did manage to build my first r/c airplane and fly it, and that in itself to me is a highlight of my modeling career. After seeing some of the other entries, maybe its just as well.:D

CHELLIE 01-03-2014 01:46 AM

Quote:

Originally Posted by hkeelljr (Post 935998)
Haven't really started on my bitty bipe yet, although I've cut out the ribs for both wings. But on the plans it shows the elevator halves controlled by split push rods. Would it be ok just to join them together and use a single push rod? In other news missed the deadline to submit photos of my contester build to MAN, oh well, I did manage to build my first r/c airplane and fly it, and that in itself to me is a highlight of my modeling career. After seeing some of the other entries, maybe its just as well.:D

Sure you can join the 2 elevator halves together, use some bass wood, thats what i use on my planes, or a popsicle stick

solentlife 01-03-2014 08:27 AM

Quote:

Originally Posted by CHELLIE (Post 936044)
Sure you can join the 2 elevator halves together, use some bass wood, thats what i use on my planes, or a popsicle stick

Or a U bent wire ...

Whatever you use - make sure the elevators are joined, set flat and weighted down while glue is drying ... the number of slightly out elevators over the years - I've lost count !

http://i6.photobucket.com/albums/y24...psed451e20.jpg

Nigel

hkeelljr 01-05-2014 08:48 PM

Thanks for your tips will probably use eight inch dowel and epoxy to join the two halves. Cut out the fuse halves on the bipe and while doing so, I saved the rib area cutouts and trimmed them to match the regular ribs. These will be used at the fuse so they will match the outline perfectly since they came from there.:D

hkeelljr 01-15-2014 09:58 PM

Built the rudder on the bitty, will tackle the stab next, also glued the 1/32 ply doubler to both inside places on the fuse using an old favorite sig bond glue. Its so nice having things already cut out. Now I need to get a bigger building board so I can start on the wings. I like to use one inch thick foam board as a building board, so far I've not not had much problems with warps.

hkeelljr 01-20-2014 04:12 PM

bitty bipe
 
3 Attachment(s)
Got a few photo's to share, the first shows the two fuselage sections with the 1/32 ply doublers in place, next is the stab and finally the rudder. The cold weather has caused havoc as far as doing stuff outdoors and in my workshop which don't have any heat. And if I put enough clothes to be warm, I can't hardly move or work. Bringing everything indoors is a pain, so I'm happy to have done what is shown. I do have a question, though, the plans show fishing line run through 1/16 tubing in the stablizer and rudder;p is this needed or can I leave this off?Attachment 172996Attachment 172997Attachment 172998:D

hkeelljr 02-06-2014 02:59 AM

2 Attachment(s)
Here are a couple of photo's of recent progress on the bitty bipe. the first shows the center section of the bottom wing. Went ahead and cut out for the aileron servo and also the brace for the wing hold down dowel. The second is just a top view of the same thing. After adding the top spar I did the same, mostly, I cut down the spar and glued a piece of 1/32 ply to beef up the spar butt joint.Attachment 173294

Attachment 173295 Hopefully I can get some more done soon, of course, more snow is being predicted for where I live, although not as bad as last week. And since the temp. in my workshop is pretty close to outside, of course I have a small electric heater that helps. :D

hkeelljr 02-15-2014 02:36 AM

bitty bipe
 
1 Attachment(s)
Finally got both wings framed up, and then I weighted everything and so far it all totals 6.9 grams if I didn't mix up my weights. Anyway this is the first symmetrical airfoil I've built, so hopefully everything will do well once its finished. Here is a photo of the wings and the fuse just posed together.Attachment 173565:D

CHELLIE 02-15-2014 02:40 AM

Looking Good ;) You still have about 2 weeks of building time left so, you will be ok :ws: Take care and have fun, Chellie

hkeelljr 02-21-2014 01:42 AM

1 Attachment(s)
Here is another photo of the bipe with motor, a speed 450, probably a bit much but the all up weight is supposed to be about two and a half pounds. However, as it sits in the picture it only weights 10.5 oz. Apparently I didn't pay too much attention to the plans, cause the rudder is going to present a problem hooking up to the control linkage, but I'm sure I'll come up with something.Attachment 173714 Although this picture doesn't show it, I added the wing tips at the leading edge and constructed the aileron linkages this afternoon.

hkeelljr 02-25-2014 04:28 PM

Sheeted the leading edges yesterday, just the topside, will have to get some more balsa to finish job. Used 1/32 instead of 1/16 mainly cause I got the wrong thing this should not pose any problems will it?

hkeelljr 03-22-2014 07:20 PM

2 Attachment(s)
Making slow but steady progress on the Bitty Bipe. I am at the covering stage, though I still lack fitting the elevator and rudder servos and assorted linkages. Started with the ailerons as shown in the photos below. The white blobs is the servo linkages and servo in a small plastic bag so I can keep track of them. Next photo shows the mounting formers for the wings and the shelf for the ESC and battery pack, the holes are for air to pass through. Sorry for the quality of the pictures as usually they come out much better.Attachment 174271Attachment 174272 I've setteled on an Orange and blue color scheme.

hkeelljr 03-31-2014 05:01 PM

1 Attachment(s)
Well, started on the covering process the other day, and the stab and elevator looks good. Still have some more nit-pic areas to take care of, and do the landing gear. Would it be better to use a solid type of gear or use wire for the landing gear. Here is the latest progress photo:Attachment 174401 :D

CHELLIE 04-02-2014 12:41 AM

Quote:

Originally Posted by hkeelljr (Post 944128)
Well, started on the covering process the other day, and the stab and elevator looks good. Still have some more nit-pic areas to take care of, and do the landing gear. Would it be better to use a solid type of gear or use wire for the landing gear. Here is the latest progress photo:Attachment 174401 :D

use a solid landing gear, wire LG just likes to bend and twist a lot :ws: Your plane is looking great, Take care and have fun, Chellie

hkeelljr 04-12-2014 12:56 PM

1 Attachment(s)
Finially got the wings covered and it looks great. As it is shown in the photo w/no eletronics it weights 12.8 oz. I did notice that the control horn for the rudder will have to be repositioned so it won't bind. Anyway, its getting closer to being finished. Attachment 174755 :):)


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