Eric Robson Posted March 16, 2021 Share Posted March 16, 2021 I remember it in the APS plans book, it was an impressive model at it's original size. Looking good so far Ron. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 16, 2021 Author Share Posted March 16, 2021 There’s a bit of ‘design licence’ in this version, I prefer to think of it as an interpretation of the original 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 16, 2021 Author Share Posted March 16, 2021 Little boxes, but not made out of ticky tacky Quote Link to comment Share on other sites More sharing options...
Trevor Posted March 16, 2021 Share Posted March 16, 2021 (edited) 4 hours ago, Ron Gray said: Little boxes, but not made out of ticky tacky . . But hopefully they do all look just the same?! Edited March 16, 2021 by Trevor Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 16, 2021 Author Share Posted March 16, 2021 4 do, but 2 don’t. Good job they’re not supposed to be the same. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 16, 2021 Author Share Posted March 16, 2021 The wing structure, or to be more precise ¼ wing structure is nearing completion but a lot of time was spent waiting for glut to dry before I could move onto the next bit. Main spar top strengthener added together with false TE at aileron. Wasted a lot of time looking for the cap for my glue bottle, couldn't find it so 3D printed off some brightly coloured ones so that I don't lose one again. Front and rear spars added plus aileron riblets and box for wing brace. Should be able to flip it over tomorrow and fit the lower spars, sand and fit the wing sheeting and build the ailerons. 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 17, 2021 Author Share Posted March 17, 2021 Lower wing spars fitted together with LE strips (5mm x 5mm for sheet support) and when dry planed back for sheeting. Good job it's not a washing line day! Ordered some more of the small clamps as wifey none too please about the raid on her peg bucket (made the mistake of leaving the doors open so she saw what was going on ?) Looks like I'm not going to make my deadline of the 29th as I've just been booked for work for the next 2 days plus all of next week (that's semi retirement for you!) 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 17, 2021 Author Share Posted March 17, 2021 Underside sheeting done plus spar infill. So, part from cutting out and finishing the aileron and sanding, that's one wing bit done, only 3 other to do! Clamps wouldn't easily work on the front edge so back to the old tape favourite. 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 25, 2021 Author Share Posted March 25, 2021 Since the last post I've built the other wing outer panel but then had to stop building to concentrate on the redecorations to the room that got flooded just before Christmas. That took up most of my spare time and this week I've been working every day however I was able to grab a break in my work today so cracked on with the assembly of the first inner wing panel, same form of construction as the outer panels but no jig tabs on the ribs. More decorations tomorrow but will try and fit in some more building too! 1 Quote Link to comment Share on other sites More sharing options...
Dwain Dibley. Posted March 25, 2021 Share Posted March 25, 2021 Glad it was all ok Ron, nothing worse than waiting to find out whether or not you have got it wrong. On the other hand I have had a revelation whilst nodding off, and had to wait until morning, hoping I don't forget what I thought of. D.D. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 28, 2021 Author Share Posted March 28, 2021 Flood damage repairs , replastering and redecorations now done, just waiting for sparks to come back to do second fix then oak flooring can go down. Which all means that I could get on and finish the main structure of the inner wing panels so it was on to the wing braces. These are formed from a ply framework sandwiched between balsa. Whilst they were drying I got to work on the wing jointing clips, a nice simple but effective design. Clip housing formed from 2 pieces of ply stuck together, the inner ply section has a 'spring' which the clip locates in. Fitted to the inside face of the rib. The clip slides in from the underside In position And a screw is fastened to the other wing panel root rib so that the clip engages with it when pushed in. To remove the clip a zip tie is threaded through the slot so that there is something to grab hold of, obviously the air isn't fastened in place! Then a lot of sanding to profile for the braces. 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 29, 2021 Author Share Posted March 29, 2021 Whilst one 'leg' of the strut locates on the bracket on the underside of the wing joint tongue box, the other needs to have a fastening embedded in the wing structure. First an angled plate is made (ply bracket sanded to angle on the disk sander) which is glued to the underside of the wing. A hole is then drilled through following the angle of the bracket so that a T nut can be sunk into the top surface of the wing. This is then plugged (sanding to come when dry). Ailerons were the cut fm the wing and the 2 piece TE added. Then back to the inner wing sections for diagonal bracing with 5mm x 5mm balsa. Quite pleased with the fit of the bracing (Mr Fenton would be pleased!) 5 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 30, 2021 Author Share Posted March 30, 2021 (edited) Air brakes next, ply bearings on a BBQ skewer axle. The air brakes with pivot levers attached. Assembled Servo installed with linkage. And operating Edited March 30, 2021 by Ron Gray 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 30, 2021 Author Share Posted March 30, 2021 Having fitted dates air brakes I then started to fit the balsa sheeting to the top of the wing but quickly realised that in doing so the air brakes wouldn't open. I need to cut an internal chamfer on the LE of ethnic air brakes so that they clear the balsa sheet. A job for tomorrow evening after work. 1 Quote Link to comment Share on other sites More sharing options...
Dwain Dibley. Posted March 30, 2021 Share Posted March 30, 2021 Sweet as a nut. And a good spot before it was too late. D.D. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 31, 2021 Author Share Posted March 31, 2021 Should have looked more closely at the plan as it’s quite clearly marked! Quote Link to comment Share on other sites More sharing options...
Dwain Dibley. Posted March 31, 2021 Share Posted March 31, 2021 Just put it down to being exited. ? D.D. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted March 31, 2021 Author Share Posted March 31, 2021 Managed to cut the chamfer on the airbrake and after ticking the sheet balsa can conform that it now opens and closes OK, but will it still do so after covering? ? 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted April 3, 2021 Author Share Posted April 3, 2021 LE sheeting done Checked that the air brake would open Then it was sanding the LE to profile using my 3D printed contour sanders 1 Quote Link to comment Share on other sites More sharing options...
Dad_flyer Posted April 3, 2021 Share Posted April 3, 2021 Those brakes are enormous! It must require some heft from the servos, or is it flying pretty slowly before the brakes go up more than a tiny bit? Quote Link to comment Share on other sites More sharing options...
Dwain Dibley. Posted April 3, 2021 Share Posted April 3, 2021 I love those sanding blocks. ? What a cosmic idea. D.D. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted April 3, 2021 Author Share Posted April 3, 2021 2 hours ago, Dad_flyer said: Those brakes are enormous! It must require some heft from the servos, or is it flying pretty slowly before the brakes go up more than a tiny bit? Flying pretty slowly - Looking at videos posted of the model in flight it just floats along but the brakes are not opened fully, they only go to approximately 50 degrees. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted April 3, 2021 Author Share Posted April 3, 2021 2 hours ago, Dwain Dibley. said: I love those sanding blocks. ? What a cosmic idea. D.D. I you want some, just let me know, I can easily print some more off and different sizes too! 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted April 8, 2021 Author Share Posted April 8, 2021 Lots of sanding over the last couple of days leading to the start of the big cover up. After yesterday’s flying I dusted the elevator off and started with that for the covering. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted April 8, 2021 Author Share Posted April 8, 2021 Moved on to the ailerons and encountered an issue, after shrinking the LE has developed a ‘starving horse’ appearance. So I stripped the covering off and redid it paying particular attention applying the least amount of heat, a bit better but still has introduced some curves. Not quite sure what to do, leave it as is or strip it and try and add some bracing for the LE. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.