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Balsa Cabin Mini Glider

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Jeffrey Cottrell 211/01/2020 22:29:04
209 forum posts
33 photos

Hi Guys

Rather fancy one of these. Anyone built one, got any thoughts, opinions etc.

Thanks

Jeff

Karl Jackson 117/01/2020 21:40:39
30 forum posts
21 photos

Hi Jeff,

I'm currently building one of those . Made a number of modifications to the construction of the fuselage and wing. Currently I'm at the covering stage so no idea yet on flight performance. Will post some pics once I've finished it.

Karl

Jeffrey Cottrell 219/01/2020 09:55:00
209 forum posts
33 photos

Hi Karl

Thanks for the reply. Beginning to think I was the only one to buy one of these kits.

Anyway, my kit is with the couriers and should be with me soon. Will give it a good dose of looking at when it arrives.

Meanwhile interested to hear what mods you made to the structure.

Not averse to making changes myself, either for strength reasons, or different build techniques. Would like to see what you did.

Thanks

Jeff

Karl Jackson 119/01/2020 19:11:23
30 forum posts
21 photos

20200119_180048.jpg20200119_180007.jpg20200119_175935.jpg20200119_175856.jpg20200119_175840.jpg20200119_175814.jpg20200119_175805.jpgHi Jeff. Take a few pictures of some of the mods I've made. Made the vertical fin by sandwiching several pieces of balsa together with the snake running through it to hopefully improve on the original push rod layout. Decided to use 2 servos for the ailerons instead of torque rods. Will add some more pictures of the wing when I've got it assembled. Added a lite ply horizontal plate to sit the receiver,battery, speed controller and elevator servo. Set the width to suit the 3s 1300 lipo pack I'm going to use. Added a new motor former out of my spares box with some balsa triangle to allow the front to be shaped more. Added my own top hatch to allow access for mounting my speed controller , this will be covered over once speed controller is tested and fitted. The bottom hatch has a magnet and give access for fitting motor and battery. I've got a few pics of the tail during construction which I'll upload once I find them. Not sure how it's all going to balance but I've tried to allow for a variable battery position.

Karl20200119_175738.jpg

brfc720/01/2020 22:43:21
avatar
405 forum posts
142 photos

Watching with interest

Baz

Karl Jackson 105/04/2020 18:46:03
30 forum posts
21 photos

20200209_223901.jpg20200209_223354.jpg20200209_223346.jpg20200405_180046.jpg20200405_180100.jpgSome pictures of the glider during covering and the finished Mini Glider20200405_180112.jpg

Karl Jackson 108/04/2020 20:32:20
30 forum posts
21 photos

Hi Jeff. Here's a picture of the aileron linkage. Ailerons are top hinged with Diamond tape. I made the aileron horns out of some fibreglass plate. I put the servos well forward to help with the balance as the 3 cell Lipo will be lighter than the nicad pack it was originally designed to use. 20200408_200542.jpgIts worked out okay as I've been able to balance the glider by just positioning the Lipo, no need to add any weight. Hope this helps.

Karl

Jeffrey Cottrell 214/04/2020 22:55:58
209 forum posts
33 photos

Hi Karl
Thanks for all the extra detail. Very nice install.
Hope you won't mind if I pinch some of your ideas.
Hopefully next on the bench.
Cheers
Jeff

Karl Jackson 114/04/2020 23:23:10
30 forum posts
21 photos

Hi Jeff,

Glad that what I've done may be helpful in your build. One thing I've done which isn't shown anywhere is that I added a carbon tube spar.

If you need any more pics just let me know.

Karl

Jeffrey Cottrell 226/04/2020 14:26:36
209 forum posts
33 photos

Hi Karl

The Mini Glider going together slowly, but I have a puzzle you might be able to help with.
So, looking at the supplied wing, it is marked 'Top of Wing'. Seemed a bit odd, after all the wing is supposed to be a flat plate, until I noticed that the wing does have a distinct chordwise bow about 3mm or so at its highest.
Gradually fades to flat going spanwise.
Really can't imagine this is deliberate, more like last bit of wood in the box, but it would explain the marking.
Can you recall whether you found the same with yours?
I notice you are using two wing bolts rather than the supplied items, which is an idea I am copying, but this would tend to flatten out any bow in the wing, if (IF) it's deliberate.


Your thoughts?


Jeff

Karl Jackson 126/04/2020 19:14:33
30 forum posts
21 photos

Hi Jeff. When I bought mine from the Balsa Cabin, Dave explained that the top of the wing is profiled. He suggested that if I was going to be using a fast motor setup to add a carbon spar. The tips of my wing were slightly bowed upward when on the bench.I cut the slot for my carbon tube spar, 5od x 3 id, which I glued in place with epoxy, and then weighted the wing down on a flat surface while the glue cured.

Karl

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