Tim Hooper Posted October 11, 2012 Share Posted October 11, 2012 Since the original 48" CS flew and was subsequently published, I've received a steady trickle of requests for a larger version. Now that the editorial team has also started in on me, I thought I'd better have a bash at it! So we're looking at a 60" version to suit a 5S set-up. Besides being a handy size on the flightline, 60" is also deemed to be the largest size that will fit on a freebie plan. That's good enough for me! I've decided to switch from the 10% aerofoil of the original, and go to a 12% semi-symmetrical section instead. The aluminium wing joiner is going to be replaced by a hardwood joiner - I heard tales that epoxy won't bond to ali as well as it does to wood. I'd like to make the T-mounted tailplane removable too. So the crayons are out again, and so far I've pencilled in the general outlines. I've referred back to my original sketch in order to get the proportions right. tim Quote Link to comment Share on other sites More sharing options...
Robin Kearney Posted October 11, 2012 Share Posted October 11, 2012 Really looking forward to this one Tim! Quote Link to comment Share on other sites More sharing options...
Concorde Speedbird Posted October 11, 2012 Share Posted October 11, 2012 Niceee. Semi symmetrical aerofoil sounds good Also sounds like 60-70 four stroke territory... (sorry I am always thinking about IC conversions!) Keep up the good work! CS Quote Link to comment Share on other sites More sharing options...
Jon Laughton Posted October 12, 2012 Share Posted October 12, 2012 Now I am really interested - the 48" was a great looking model but a tad too small for me and I like the sound of its big brother having a .55 engine up front! Will this be a free plan or just an addiiton to the plan store Are there plans for a wood pack etc as well? Jon Edited By Jon Laughton on 12/10/2012 11:20:48 Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted October 12, 2012 Share Posted October 12, 2012 Nice one Tim, we didn't twist his arm too much folks, honest Jon, free plan yes and a wood pack yes, all being well. Quote Link to comment Share on other sites More sharing options...
Jon Laughton Posted October 12, 2012 Share Posted October 12, 2012 Thanks David - that' great but it looks like another project for the forthcoming winter then! May have to be spring as I am planning on a trad build Supermarine Type 224 after I have assembled the H9 Corsair that is! All with OS 55s marked down for them...where's the flippin piggy bank? And.....I was forgetting that I quite fancied the Tucano that's leading the 2013 mass build - doh! Being a subscriber on this forum is getting very dangerous with all the temptation around! Jon Quote Link to comment Share on other sites More sharing options...
Lee Smalley Posted October 12, 2012 Share Posted October 12, 2012 Foam wings ..... Foam wings .…please either supply end templates or ask cloud models to offer wings for her then she is a really quick build (only the fus to build) for the lazy sods amongst us! Please !!!!! Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted October 12, 2012 Share Posted October 12, 2012 Oooh perfect for 6S A123's methinks Quote Link to comment Share on other sites More sharing options...
Jon Laughton Posted October 12, 2012 Share Posted October 12, 2012 Irrespective of the wing construction with there be one or two aileron servos in the 'as drawn' design? Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted October 12, 2012 Author Share Posted October 12, 2012 No pressure then....... Right, I'm expecting this project to take me up to Crimbo, so it'll be liable a little while after that before it's flight-tested and published. All being well, that is. What can possible go wrong? Right, time for a few piccies...... Here's an exciting shot of my notebook and the Profili-generated aerofoils. I'm using an E207 section - whatever that means... Here's the wing plan. There's an aileron in each panel too! ...and the fuselage plan is quite well advanced... There's a no-name 4260 600kv motor from Giant Shark (looks like an earlier Turnigy to me, but it's only 20 quid!), an 80A Turnigy ESC and a 5S 4000Mah pack. Here's the motor, spinner and cell pack being tried for size. Lee, wouldn't it be possible to work out end templates from the drawn ribs? I've no experience of foam cutting, so any input would be useful! Mind you, I do need to sort out a moulded canopy on this one, so I'll be reseaching moulding techniques at some stage or other... tim Quote Link to comment Share on other sites More sharing options...
Lee Smalley Posted October 12, 2012 Share Posted October 12, 2012 it would be possible but it would be even nicer if myhobby store sorted out some foam wings for her, lets face it they do the galaxy kits now so this can not be to hard, but not keen on the E207 section for a sportster! but then i like aerobats to be aerobats Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted October 13, 2012 Author Share Posted October 13, 2012 Balsa has been cut! I've edged joined the 1/16 wing skins using Fairy Liquid as an adhesive...... Good eh? tim Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted October 13, 2012 Share Posted October 13, 2012 Come come now Tim...Thats a fib isn't it. Andrew Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted October 13, 2012 Share Posted October 13, 2012 Posted by Tim Hooper on 13/10/2012 20:40:53: Balsa has been cut! I've edged joined the 1/16 wing skins using Fairy Liquid as an adhesive...... Good eh? tim Surly not , Just an ideal paper weight ! . Steve Intrigued , Edited By Stephen Jones on 13/10/2012 21:50:38 Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted October 13, 2012 Share Posted October 13, 2012 I think it's fairy PVA, probably makes the wing lighter or something? Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted October 13, 2012 Author Share Posted October 13, 2012 Ok, I'll confess. It's full of aliphatic resin...... tim Quote Link to comment Share on other sites More sharing options...
Dylan Reynolds LaserCraft Services Posted October 13, 2012 Share Posted October 13, 2012 liking this, i was considering the original but, again thought it was a tad small for me, but this one will be perfect, big thumbs up from me looking forward to publication Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 13, 2012 Share Posted October 13, 2012 I may be strange, and some may say mad. but starting a build with the wing skins! cheers Danny Quote Link to comment Share on other sites More sharing options...
Concorde Speedbird Posted October 13, 2012 Share Posted October 13, 2012 Don't worry Danny, I agree, so either we are normal or both strange... CS Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted October 14, 2012 Author Share Posted October 14, 2012 So what's odd about starting with the wing skins? On the CS you need the completed wing, bolted to the fus in order to make the upper decking. The wings are built on the lower skins. So the skins come first, OK? It all makes sense - honest! Right, after a blissful session at the field, followed by a life or death struggle with a recalcitrant lawn mower, I eventually got back into the workshop for an hour and marked out the lower skins. Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 14, 2012 Share Posted October 14, 2012 I suppose I expected you to start cutting a set of ribs, but as you say the wings are built on the skins I guess that makes sense..... sort of...... Cheers Danny Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted October 14, 2012 Author Share Posted October 14, 2012 No 'sort of' about it, Young Fenters! I'll glue the spars down then make real life measurements to make sure the rib slots are in the exactly the right places. Approximately, that is..... tim Quote Link to comment Share on other sites More sharing options...
IanN Posted October 14, 2012 Share Posted October 14, 2012 Posted by Tim Hooper on 11/10/2012 21:35:47: So the crayons are out again, and so far I've pencilled in the general outlines. I've referred back to my original sketch in order to get the proportions right. tim Tim, are you redrawing it completely then, rather than just upscaling the cad files (then changing the critical bits like spar sizes, sheet thicknesses etc) that the mag presumably still has from the first published version? Quote Link to comment Share on other sites More sharing options...
Tony K Posted October 15, 2012 Share Posted October 15, 2012 Tim, just as a matter of interest, what do you draw your plans on? Do you use draughting film? Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted October 15, 2012 Author Share Posted October 15, 2012 Ian, I don't use CAD, so this is a ground-up redraw from a blank sheet of paper. To be fair, I'm manually taking dimensions from the published plan of the CS48 and increasing them by 125% to get the overall proportions correct. It's a bit of a grind, but it does allow to me to change anything I choose! Tony, I'm not sure exactly what I'm using to draw on! I came by a roll of thick, semi-translucent tracing paper some time ago and it's served me well. Mind you, it's coming to an end, so I'll be on the look out for some more some time soon! tim Quote Link to comment Share on other sites More sharing options...
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