new wing for house of balsa 2x4

Re: new wing for house of balsa 2x4

Postby tigger » Thu Jun 19, 2014 1:11 pm

terminals for servos going on and i'm useing the modifed HK crimper, note the centre terminal with part of the clip still on. This gives you something to hold on to whilst you crimp the wire then it just needs a wiggle to break it off.
And congrats to Dale for getting that beautiful Harvard into the air,well done Dale.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Thu Jun 19, 2014 1:15 pm

servo in wing and new terminal on. Didn't shorten the servo lead as there's a ton of room and no weight to worry about.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Thu Jun 19, 2014 1:20 pm

testing of terminals with my servo tester and i leave the servo in the centre/neautral position ready for the arm to be fitted.I filled in the centre section with some more 1/16" balsa and left some large holes in it so i can push wires back in when i'm covering it.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Thu Jun 19, 2014 1:23 pm

wing on the fuselage, ailerons will stay off until the wing is covered.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Thu Jun 19, 2014 1:29 pm

plane on C of G jig. Couldn't help myself. The level on the nose weighs 9 grams but with the ailerons and covering on i'll need a little more but happy at the moment.
Sent a photo to the House Of Balsa,[the kit originaly came from them] and they didn't shoot me down for messing with their design but were happy to see what modelers did with their kits and would like to know how it flys,me too.
Cheers Tigger
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Re: new wing for house of balsa 2x4

Postby Dale » Thu Jun 19, 2014 6:51 pm

Cheers,
I like your build style, very nice and clean. (I'm a messy bugger, which always results in more effort at the far end cleaning up, sanding etc.)
Looking forward to that flight report!
Dale
 

Re: new wing for house of balsa 2x4

Postby owl » Sat Jun 21, 2014 8:33 am

She looks spectacular Tigger! I'm sure she'll fly like an angel
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Re: new wing for house of balsa 2x4

Postby tigger » Sat Jun 21, 2014 2:47 pm

all set to go with the covering and thanks guys for the kind remarks.
Okay, i have drapped covering from tip to tip and find this is an easy way for the bottom of wings. I made a jigg up from some scraps and with a couple of clamps it holds an upside down wobbly wing steady.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Sat Jun 21, 2014 2:50 pm

Starting to bring the edges down and trim covering to size ready for rolling under.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Sat Jun 21, 2014 2:54 pm

A bit over 2 on the heat setting is enough at this stage. I'm using solarfilm and it sticks well enough without Balsa lock which can cause a few problems if you don't get things sitting right and apply the heat as it's hard to lift the cover for another go.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Sat Jun 21, 2014 2:57 pm

Just showing the iron and temp i have set it to.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Sat Jun 21, 2014 3:09 pm

All done for the bottom side of wing. I used the heat gun to firm up the covering, not too tight at this stage as it could pull the wing out of shape. Will tighten completely when the top side is covered.Can't use the jig on the next side but it's not really needed as the wing will sit nice and flat. I will use 3 pieces to cover the top and start and do the tips first and then the centre with a small overlap on the tips. I will use some Prymol on the edges where the top covering comes in contact with what i have put on. Prymol takes the gloss off the solafilm and helps it stick better. It's good for removing water base paint from covering material for repairs as well. Do hope i'm not boring all the old modelers with this but just maybe some one will get something from it all.
Cheers Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Sun Jun 22, 2014 4:39 pm

outer top panel covered and i have folded the solarfilm down the rib to give it a bit more area to adhere too.
Will cover the other side and the centre section will over lap this by 10 mm.
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Re: new wing for house of balsa 2x4

Postby tigger » Sun Jun 22, 2014 4:51 pm

All the covering on so will sort out the ailerons and get them attached this week. Have made some leads and have attached them to the RX ready for the wing.I Chose flaperons for wing choice on my spectrum 7 channel and that will give me a flap setting and a spoileron setting using the flap switch. It also enables differential and i'll mix some rudder with the ailerons,about 30% seems to work well. Next comes the scary bit, for me anyway and that will be the test flight.
Cheers Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Tue Jun 24, 2014 4:44 pm

all the bits ready for aileron attacment. I had saved a laser cut aileron horn cut out from a previous model and use it as a pattern for any i need,just draw around it on to some 1/16" ply and cut them out with a cut off blade in my angle grinder,works a treat.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Tue Jun 24, 2014 4:47 pm

Mylar hinges glued into wing with PVA glue.Will mark off aileron and cut slots ready for attaching.
Made the hinges about 7mm wide and 16 mm in length.
Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Tue Jun 24, 2014 4:54 pm

control horns epoxed in place and ready to all go together.Mylar material in the back ground.I just bought a sheet and cut out what i need. Will try and get the push rods and fairings fitted and then it's almost time to play the last post.
Cheers Tigger
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Re: new wing for house of balsa 2x4

Postby tigger » Thu Jun 26, 2014 8:05 pm

fairings to cover servos. Remember a while back i said i would show how to get a feed and a fairing, well here it is. The fairings are from Le Snacks, cheese and crackers and i just cut the round cheese holder bit off,paint inside and stick on with some d/sided tape. Works well.Made the odd mistake during the build and one was i should have mounted the servos close to the spar where i normally put them and this may have helped the C of G a bit.AUW of the wing came in at 10.7 ounces and the original was 7.2ounces. To get the correct C of G i added 1 ounce of lead in front of the batteries. The AUW for the glider is now 26 ounces and the wing loading stays the same.more weight but more area as well.
Wings finished so i'll sign off now and thanks for having me.
Cheers Tigger
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Re: new wing for house of balsa 2x4

Postby Dale » Thu Jun 26, 2014 8:30 pm

Excellent idea! But you can't sign off until we get a post flight report and some inflight pics!
Dale
 

Re: new wing for house of balsa 2x4

Postby owl » Sat Jun 28, 2014 5:53 am

Wow that's come out nice and light Tigger! Good luck with the maiden
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