RE: Bridi Killer Bee  
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RE: Bridi Killer Bee - 2/12/2007 1:30:31 AM   
BigBird1



Posts: 758
Joined: 2/26/2002
From: Knoxville, TN, USA
Status: online 		It wasn't that bad..I used microbaloons and slow set epoxy with the wing covered with waxed paper..and lightly bolted the wing down..
Also don't use the plastic bolts for the front of the wing use steel..
Blue Jay Models are now handling his planes..Joe retired a few years ago..
http://www.bridiairplanes.com/hangar/index.html

Have fun,
BB1

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(in reply to WhiteRook)
       Post #: 26

RE: Bridi Killer Bee - 2/12/2007 1:45:40 AM   
WhiteRook



Posts: 893
Joined: 11/3/2002
From: westbrook, ME, USA
Status: offline 		badg , it looks good, the problem I had with both a dyna flight and a wing kit , was
that the wing would hit on the leading and trailing edges and just air in the middle, as you say arround 1/4 inch. THIS can be solved .

(in reply to badger5964)
       Post #: 27

RE: Bridi Killer Bee - 2/12/2007 2:02:23 AM   
2slow2matter


 

Posts: 2368
Joined: 8/25/2004
From: Springtown, TX, USA
Status: offline 		Don't worry so much about a forward CG right now--there will be a lot more weight in covering behind the CG than in front of it. Don't worry yourself at all with Fore/Aft CG until after everything but the battery and rx is installed--and it is all covered up.
Right now, just get the lateral balance right before covering those great looking wings up!
I hope my frame looks that good! The lightening holes you cut in the rear may be throwing the CG forward a bit too--but again, don't worry about it much yet. It actually sounds like you are right on course!

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From a pile of sticks they are born, to a pile of sticks shall they return.

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       Post #: 28

RE: Bridi Killer Bee - 2/12/2007 2:42:04 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		The wing to fuse fit is fine around top of the wing. Some small gaps just forward of spar. Probably about 1/16". This was easily overcome with the microballon-epoxy filler. The trailing edge of the wing fits with just a small gap at the fuse. But plans are for a straight section across the fuse at the trailing edge but the wing is tapered so a gap exists. This is really just preference for me to have this filled in. BUT, it should be a smooth transition from bottom of the wing at the trailing edge to the bottom of fuse. I had to add about 3/16" of balsa to the fuse to get it smooth from bottom of wing to bottom of fuse. It is like the entire wing should move up 3/16" towards top of fuse. Remember the Robart incidence meter showed on spec incidence all round.

Here is a couple pictures to show the problem.



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(in reply to 2slow2matter)
       Post #: 29

RE: Bridi Killer Bee - 2/12/2007 3:44:42 AM   
2slow2matter


 

Posts: 2368
Joined: 8/25/2004
From: Springtown, TX, USA
Status: offline 		Ok, looking back at your pic from post 24, I now see what the lines on the ribs are for. I'm used to a laser or crunch cut kit that has alignment tabs. now I see what you are talking about. Very nice!

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       Post #: 30

RE: Bridi Killer Bee - 2/19/2007 1:10:49 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		A productive weekend. Covered the wing and added the ailerons too!

I used Robart large hinge points. First time with this product. They are easy to get aligned and drilled correctly using the Robart drill jig. They are more work then CA hinges but have a better feel and action. The holes for the joint in the aileron are slightly distracting. They would have been smaller had I chosen a wedge type leading edge for the aileron rather than a rounded form. I did not think I would use them again. However when the product was finished I like the feel and action better than CA or pin type hinges. I think the hinge points are more difficult to install (not much) than either of these methods. One plus is the ease of alignment, I think it best over CA or Pin. I will use the hinge points again, especially where enough stock exists to hold the hinge point. I had to add some scrap to the inside of the trailing edge to have enough meat.

First time with Ultracote and I prefer it over Monokote. I see alot of debate over monokote quality dropping over time. I beleive it so. I covered a hog bipe nearly three years ago and it is still tight, I believe I only reshrank it once. However a Contender covered just a year ago needs constant reshrink. Looking this evening it is due again. Arrgh!!



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(in reply to 2slow2matter)
       Post #: 31

RE: Bridi Killer Bee - 2/19/2007 1:12:49 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		That was the bottom here is the top.

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       Post #: 32

RE: Bridi Killer Bee - 2/19/2007 1:59:56 AM   
teufelhund



Posts: 282
Joined: 9/16/2003
From: Bladenboro, NC, USA
Status: offline 		Hey Badger! Great work with the wing! I prefer to use the hinge points on my large aircraft to. They do work great and I have never had any problems with them. The Ultracote is awsome also! I really like the scheme on th KB's wing, and can't wait to see the fuse. Keep the photos coming as you make more progress. Cya later, Ben

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       Post #: 33

RE: Bridi Killer Bee - 2/19/2007 2:57:51 AM   
2slow2matter


 

Posts: 2368
Joined: 8/25/2004
From: Springtown, TX, USA
Status: offline 		very nice badger! How many hinge points did you use? You shouldn't have a problem at all with that many hinges! I like the robart hinges too. On my kadet, I used them on the ailerons, but used CA hinges on the tail feathers. I've used them in the past on other projects as well. There is a definite difference in feel. Plus, you can orient them differently and make true fowler type flaps --that's something you can't do with the other type of hinges. Keep the pictures coming! I'm probably a month away from putting mine on the board, but you are inspiring me to hurry up and get it pinned down!

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       Post #: 34

RE: Bridi Killer Bee - 2/19/2007 3:17:57 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		I used seven hinge points on each aileron. One could have gotten away withn 6 or maybe five. Seven locations where shown on the plans.

Well this should be it for progress for about 3 weeks. I've got other committments the next three weekends. This will give you some time to catch up!

Thanks.

(in reply to 2slow2matter)
       Post #: 35

RE: Bridi Killer Bee - 3/20/2007 3:08:33 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		Hello,

Been a month since last post. Worked this weekend and tonite on cowl and wheel pants. They are both ABS plastic. The cowl I cut and fit using a lap joint for the halves. I reinforced the seam on the inside with 1.5 oz fiberglass, two layers of it on the top and bottom sides that will bolt to the cowl blocks. The odd shaped cowl fits the side mounted ST nicely. Only a small cutout for the the can on the pitts muffler. Other cutouts for the glowplug, needle and exhaust pipe. I used rubber grommets from some futaba servos in the cowl where the mounting screws go. I understand ABS cowl often fail from vibration and perhaps this will lengthen the life.

Here are some pics

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(in reply to WhiteRook)
       Post #: 36

RE: Bridi Killer Bee - 3/20/2007 3:15:45 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		View of inside showing reinforcement with glass.

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       Post #: 37

RE: Bridi Killer Bee - 3/20/2007 3:17:06 AM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		And a side view


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(in reply to badger5964)
       Post #: 38

RE: Bridi Killer Bee - 4/15/2007 9:34:48 PM   
badger5964



Posts: 278
Joined: 11/5/2003
From: Fayetteville, NC, USA
Status: offline 		Wow just looked at last few posts of mine and my progress is really slow. Well here is the sum of my efforts for the last month.


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       Post #: 39

RE: Bridi Killer Bee - 4/15/2007 11:17:57 PM   
2slow2matter


 

Posts: 2368
Joined: 8/25/2004
From: Springtown, TX, USA
Status: offline 		Badger,
Looking good! Mine is still in the box, so you are lightyears ahead of me!!!
I'll probably start mine within the next month or two. It's more than likely going to be a summer project now!

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From a pile of sticks they are born, to a pile of sticks shall they return.

(in reply to badger5964)