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Steven Shaw06/06/2019 17:52:39
303 forum posts
163 photos

It looks like you're planing on inserting the battery from the rear of the cabin. I'm just getting ready to cut my formers out, but I think I will start on the wing instead until I see what you end up with.

Also are you going to add the motor 3D files to your link? It looks like something that I would like to put onto the front of my Li'L Cub.

Tim C10/06/2019 11:07:22
484 forum posts
253 photos

Having completed the dummy motor, attention has been focused on fitting out the wings and airframe.

I had moulded the slats a few weeks ago, my first attempt ended in failure as it delaminated due to insufficient glue. For the 2n attempt is used 1 x 1/16 and 3 x 1/32, it’s thinner than Peters plan, but laminated is plenty stiff enough, it the slot gap which is important more than the aero shape, after a bit of planing and sanding, the final shape is emerging. I used Titebond glue, leave plenty of time to dry before removing. These come in at 23g each, it the weight of the glue!

I printed up the 10 slat fixings on the 3d printer, to get the exact wing LE profile, I’d traced round the wing profile, scanned the image into inkscape, and created a 2d outline, the SVG file was then exported and imported into 123d and the 2|d shape made into a 3d object, the whole process took no more than 10 mins, I just then printed out 10 fixings, they are hollow and weigh about .3 gm each.

slat fitting.jpg

Slat fixings

slat test.jpg

slat trail fitting, final sanding and finishing still to do, undecided about what glue to use, cyano works well for pla to balsa as does Kaufner 2 part Acrylic glue.

Peter Miller10/06/2019 11:13:03
9929 forum posts
1160 photos
10 articles

THat saved an awful lot of sanding and checking and sanding and checking.

I have a Dremel Idea Maker.Never managed toi get it to do more than print out some pilots.

At least it was a freebie!!!

Martin McIntosh18/06/2019 19:53:51
2834 forum posts
1050 photos

Peter, I am building one and have started a thread under `Li`l Cub`. The slat layering puzzles me since I have now seen reference to three combinations of 1/32 and 1/16 balsa, none of which correspond to the thickness shown on the plan, so what did you actually use please?

Peter Miller18/06/2019 20:50:33
9929 forum posts
1160 photos
10 articles

Hi Martin

Yes,the magazine plan was wrong, I missed that when proofing the plan.

I used 2 layers of 1/32" sheet and three of 1/16" sheet. Tim is using a slightly different combination.

He seems happywith hist,I liked mine but Iknow that one could use four of 1/16".I think my original gives a better sharp edge ar reg slat trailing edge

I hope that helps

ACtually my instructions are correct in thex magazine

Edited By Peter Miller on 18/06/2019 20:51:21

Martin McIntosh19/06/2019 09:16:37
2834 forum posts
1050 photos

Thanks Peter.

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