James Humphreys 1 Posted February 22, 2021 Share Posted February 22, 2021 So I'd thought I'd try and document the build for this model. Please be aware this is only the third model I've built so please bear with me. So I thought I'd start easily, with the rudder & elevator these are all on one laser cut sheet for ease Next up is the elevator parts laid out and pinned down, all parts are numbered and shown on the plan. Elevator all glued and pinned Next up is the rudder which is done in the same manner 2 Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 22, 2021 Author Share Posted February 22, 2021 The start of the central wing which consists of 2 balsa ribs encased in 2 pine? Outer ribs glued together with aliphatic glue for ease of alignment, note the cross shaped piece with hole for the wing fuze mounting screw. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted February 22, 2021 Share Posted February 22, 2021 Could be Poplar lite ply James, it's a first for me, not seen laser cutting that style before, it a nice kit ? Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted February 23, 2021 Share Posted February 23, 2021 ... subscribed, James. ? 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted February 23, 2021 Share Posted February 23, 2021 (edited) Me too James ? Did you buy it from Hyperflight.co.uk? It's now out of stock. I like the way the parts interlock. Looks a good kit. Edited February 23, 2021 by EarlyBird 1 Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 Yes from hyperflight Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 11 hours ago, john stones 1 Moderator said: Could be Poplar lite ply James, it's a first for me, not seen laser cutting that style before, it a nice kit ? The parts list just says plywood although it does use pine, poplar & birch Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 The end rib angle gauges cut out and glued together ready for the wing build Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 (edited) 6x3mm pine strip glued to the flat edge of the lower leading edge sheet with the help of some tape to keep it flush on the underside( so the small lip is on the inside). Next I sanded the trailing edge taping 12mm in from the trailing edge & sanding and tapering it down to about 1-1.2mm, black Mark's to show the masked off area. Edited February 23, 2021 by James Humphreys 1 Error in post Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 So all the ribs are dry fitted to the spar web along with the trailing edge, the spar web sits ontop of the 6x3 pine strip and glued with cyano note the angled profile gauges on the end rib @ 5°next the top 6x3 pine strip cap is fitted Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 (edited) Next up are the leading edges and heres where I made a mistake, there should be a 2mm false leading edge attached to the end of the ribs which is made out of the edges of a laser sheet see pic The slats on the left & right are the false leading edges for wings A & B. I mis-took the 2 x 4mm leading edge's (pic below) as being the only one's so these were glued in and shaped per the instructions So I'm not sure on what to do, or even if it matters ?. do I try and fit the false edge on to the outside ? Edited February 23, 2021 by James Humphreys 1 Error in post Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted February 23, 2021 Share Posted February 23, 2021 There are 2 pieces to the leading edge, one glued to the other ? Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 23, 2021 Share Posted February 23, 2021 (edited) If I understand you correctly, the LE that you've already glued on to the ribs should be the outside one? If so, then you have two options: Either buy a bottle of CA debonder and remove it, clean-up then glue the correct inner one (false LE) on, followed by the correct outer LE. Or leave the 'wrong' glued on LE where it is, cut a clean piece of balsa of the correct section and apply that to the outside, then shape to section. (Obviously if the false LE is the correct section, or at least the correct vertical width, then just use that.) Your photos aren't entirely clear as to what is exactly intended by the designer - however if the second easier option above changes the wing-profile, then definitely take it apart and do it correctly as per the first option above; if it doesn't change the profile and doesn't look like it'll have any effect on the strength of the wing, then go for the easy second option. Edited February 23, 2021 by Jonathan M Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 56 minutes ago, john stones 1 Moderator said: There are 2 pieces to the leading edge, one glued to the other ? Yes a 2mm piece and a 4mm thick piece Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted February 23, 2021 Share Posted February 23, 2021 It deeper or something James, was top sheeting to butt up to it ? If not, can't see that it matters. Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 23, 2021 Author Share Posted February 23, 2021 20 minutes ago, john stones 1 Moderator said: It deeper or something James, was top sheeting to butt up to it ? If not, can't see that it matters. I assume the 2mm is there to strengthen the leading edge, just had a re-read through, the planking gets cut flush with 2mm then the 4mm goes on top to create the profiles edge 1 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted February 23, 2021 Share Posted February 23, 2021 Planking/sheeting looks better glued over the leading edge, if there's enough wood, shape then overlay, makes a neater job. Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 24, 2021 Author Share Posted February 24, 2021 So after my mistake yesterday I decided to try and remove the reading edge and it properly, so with the help of some acetone and a Blade Success. The picture below shows the correct 2mm false leading edge glued in. 2 Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 24, 2021 Share Posted February 24, 2021 Well done! 1 Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 24, 2021 Author Share Posted February 24, 2021 So a little bit more, the aluminium tube/wing joiner roughed up and put into place with abit of left over pine stripping to cap off the end of the tube Note the tubing protruding out the end of the rib this will slot into the middle wing rib later, these are know glued with epoxy (not shown). The next step is optional in the instructions but I've decided to do it, which is creating D-boxes on the 3 central rib sections (both sides) these were made with leftover 2mm balsa and glued & trimmed to shape. Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 24, 2021 Author Share Posted February 24, 2021 So some more progress on the inner wing. Not the slight recess on the top of ribs A4 this is to help locate the back edge of the top sheet top sheet pinned & located in the recess on ribs A4 top sheet pinned down top sheet being glued to the ribs from the underside. top sheet glued from inside using super glue and long canulas. I'm sure there's a better way but this is how the instructions recommend. top sheet all glued down any excess gets cut/sanded away flush to the false leading edge. Next the bottom flap stop gets fitted and glued, note the two lengths of 3x3 square balsathe plan and instructions show you need 4 but there's only 2 in the loose materials so 2 had to be fabricated The flaps are on one sheet with the end stops attached to the flaps which need cutting off & glueing to the ribs ensuring there's 0.5mm clearance all around the flaps Lastly the centre top sheet is pinned down & glued. 2 Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 26, 2021 Author Share Posted February 26, 2021 Pic shows the flaps/spoiler fitted with the magnets and washers recessed not sure as yet how to hinge them fibre hinges or tape. Next I tidied the outer ribs and fitted the leading edge For reference the Pic below shows leading edge, false leading edge glued against the ribs apart fron some shaping which will be done later when the other wing sections are finished the central wing is done. ( phew that was challenging). 1 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted February 26, 2021 Share Posted February 26, 2021 Looking good James, challenging is good, builds your confidence and ability. Quote Link to comment Share on other sites More sharing options...
James Humphreys 1 Posted February 26, 2021 Author Share Posted February 26, 2021 So the start of the next section of wings which is 2 middle sections marked B. Both will be done at the same time on the plan. The building sanding sequence/order is the same as for the main section. All the parts for layed out for the left side wing. First glue the lower spar to the trailing edge of the bottom sheet Then put the rib spar down and place the ribs. Noting the angle of the inner rib @ 5° and the outer @ 6° Note the rib spar does not go all the way to the last rib Use the template marked B7 B8 also the trailing edge is offered up to the plan making sure it all aligns before glueing Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted February 26, 2021 Share Posted February 26, 2021 4 hours ago, James Humphreys 1 said: Pic shows the flaps/spoiler fitted with the magnets and washers recessed not sure as yet how to hinge them fibre hinges or tape. Tape or a strip of covering film will be fine - the forces are not significant. 1 Quote Link to comment Share on other sites More sharing options...
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