Monz Posted November 19, 2013 Author Share Posted November 19, 2013 Cheers Roy M A question: For the trailing edges of the wings etc, will laminated depron be ok to hold the hinges for the control surfaces? Should I maybe add some balsa blocks instead? Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 19, 2013 Share Posted November 19, 2013 Hi Monz, My view would be to say 'yes' in your case. The trailing edge of the wing, just in front of the leading edge of the aileron and the same with the elevator, I would highly recommend incorporate balsa. Also, possibly the leading edge of both the elevator and ailerons. Why? - you can afford the minute amount of additional weight and for the additional strength that these additions will bring, peace of mind too. I dont know if you're going to attempt an all-moving tailplane or, like me, cheat and use a conventional elevator because I used balsa on my elevator and also, as you know used balsa on the Sea Vixen elevator. There's absolutely nothing wrong with using whichever material you feel you need to use during your build. There is definately a time, place and need for balsa in certain circumstances. Hardwood and plywood too. Hope this helps...... Regards Roy Quote Link to comment Share on other sites More sharing options...
Monz Posted November 19, 2013 Author Share Posted November 19, 2013 Cool, thanks Roy, I was just not sure of depron's strength in that dept. This is still a new substance to me! I've gone with some timber on the trailing edge. Only done the fin so far, progress being interrupted by work ugh Here I've got three pieces of 6mm x 12mm x 36mm sandwiched between two strips of hard 2.5mm which runs top to bottom. The skin will finish on top of that and flush with the edge. The depron sheets I received were 2.5mm and just over 5mm thick? Not quite the 3 and 6mm as advertised, is that perhaps because it's the grey stuff instead of white? Got a quiet day tomorrow so hope to make some more progress. Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 19, 2013 Share Posted November 19, 2013 The depron size seems pretty much correct. I've had varying sizes but the differences have been negligible. I think it might be worth introducing another material into the vertical fin........ Carbon Tube. Whilst you're at this stage, it shouldn't be a problem to introduce some 5 or 6mm dia carbon tube and then laminate some 6mm depron on either side of the tube. Best way I have found is to cut a slot the say half a millimetre narrower than the carbon tube so ensuring a good snug fit. Tape off one side of the channel, lay the vertical fin flat, introduce some PU glue (or epoxy) into the channel that you have cut, push in the tube and twist it gently to ensure good coverage of the adhesive. Ensure all is flat and true before the glue goes off. Remove the tape from the rear and then glue some 6mm depron on top and beneath the carbon tube. Really does introduce additional rigidity and strength which is advisable being a T tail. Hope you manage a good day on the build tomorrow. Regards...... Quote Link to comment Share on other sites More sharing options...
Monz Posted November 19, 2013 Author Share Posted November 19, 2013 Yeah, I've still got to do the 'spar' for the vert stab I don't have any carbon, so will use hard balsa instead. Quote Link to comment Share on other sites More sharing options...
Roy Mundy Posted November 21, 2013 Share Posted November 21, 2013 Looking Good Monique, be careful with that glue on areas close to being skinned as it's a nightmare to file out. It's the first time that I have used this glue on my build and it's good glue, but I've found it to be a pain if it hardens near a skinned joint. Looking forward to the next instalment of your build Roy M Quote Link to comment Share on other sites More sharing options...
Monz Posted November 21, 2013 Author Share Posted November 21, 2013 Yeah, I'm discovering that, so I've taken to cutting it flush after it's dried. Not much has happened, got the vert stab done now and will post a pic later, want to get the wing spar/tube done now. I'm going with 15mm pine dowel into 20mm electrical conduit. Nice and strong for the slope. Quote Link to comment Share on other sites More sharing options...
Roy Mundy Posted November 21, 2013 Share Posted November 21, 2013 Sounds good, electrical conduit sounds a good idea, it's amazing with this hobby the amount of things that you can utilise to build your planes. Good luck mate. Quote Link to comment Share on other sites More sharing options...
Monz Posted November 22, 2013 Author Share Posted November 22, 2013 Bit more done. Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 22, 2013 Share Posted November 22, 2013 Huge progress Monz! The wing looks great. Great idea to use the plastic conduit or is it plastic plumbing pipe? You know, this is going to be an awesome model. keep it coming. Quote Link to comment Share on other sites More sharing options...
Monz Posted November 23, 2013 Author Share Posted November 23, 2013 Cheers Roy!, It's electrical conduit, 20mm dia. and sanded down pine dowel. Strong and cheap! I had the whole thing mocked up earlier, it's HUGE! Quote Link to comment Share on other sites More sharing options...
Roy Mundy Posted November 23, 2013 Share Posted November 23, 2013 Looking good Monique, its taking shape. Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 23, 2013 Share Posted November 23, 2013 We all want to see the whole thing mocked up photographs .... Quote Link to comment Share on other sites More sharing options...
Depron Daz Posted November 24, 2013 Share Posted November 24, 2013 Yeah let's see it all mocked up Quote Link to comment Share on other sites More sharing options...
Roy Mundy Posted November 24, 2013 Share Posted November 24, 2013 Yes it must be done! I'm looking forward to this. Quote Link to comment Share on other sites More sharing options...
Monz Posted November 24, 2013 Author Share Posted November 24, 2013 har har :P Took it downstairs for a proper mockup I'm waiting now on servos and extension leads and other bits and bobs to arrive so I can start skinning etc Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 24, 2013 Share Posted November 24, 2013 That's looking rather good and very familiar! I notice you managed to fashion the missing body former ok. You've goof be pleased so far? Quote Link to comment Share on other sites More sharing options...
Monz Posted November 24, 2013 Author Share Posted November 24, 2013 Yeah, well chuffed! Still surprised by it's size... Got the former sorted, thanks again for the help there Grand Prix on now... Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 24, 2013 Share Posted November 24, 2013 "You've goof to be pleased....." Typing on iPad has never been a strongpoint. So, again, you've got to be pleased with that! Yeah watching it myself. Just praying for rain..... Quote Link to comment Share on other sites More sharing options...
Roy Mundy Posted November 24, 2013 Share Posted November 24, 2013 Looking really good, it's big . keep up the good work Roy M Quote Link to comment Share on other sites More sharing options...
Monz Posted November 25, 2013 Author Share Posted November 25, 2013 Busy skinning now while waiting for the postman to deliver my goodies This stuff takes some getting used to working with... Quote Link to comment Share on other sites More sharing options...
GrahamC Posted November 26, 2013 Share Posted November 26, 2013 Looking good! A strong cardboard tube to use as a roller, copious amounts of masking tape and an enhanced tummy seemed to be the best approach for me! I skinned the Swift by covering one side of the depron (outside of curve) with the masking tape to stop it cracking, and then rolled it on my stomach with the masking tape against me... Seemd to work really well! Of course, you may not be as well equipped as I am in the tummy dept! Quote Link to comment Share on other sites More sharing options...
Depron Daz Posted November 26, 2013 Share Posted November 26, 2013 I can only agree with Colin, try and get several diameters of strong cardboard poster tubes for rolling the depron around, and be careful because depron will roll ok one way, but turn it 90 degrees and it will crease as soon as you start to roll. Daz Quote Link to comment Share on other sites More sharing options...
Monz Posted November 26, 2013 Author Share Posted November 26, 2013 Thanks for the advice. I've just been using the edge of my table. Seems to be working fine so far. I'm a bit lacking in the belly dept I'm not too worried about the odd crease here and there as I'll be glassing this sucker too. Quote Link to comment Share on other sites More sharing options...
Electriflier Posted November 26, 2013 Share Posted November 26, 2013 Hi Monz, and they say that I'm a fast builder! I think I'd not be doing you any favours by keeping my mouth shut so may I suggest you consider adding as much support between the fuselage formers as you possibly can. The benefits are twofold. Additional fuselage rigidity and strength and it makes the skinning process much easier because of the additional edges that you can glue the skin to. Most noticeable in the concave part of a compound curve of 3mm depron. I do hope I'm making sense here?....... I feel rather bad in that after looking at the photos of the Bucc build, I hadn't included these photos as it was just a summary of a build. I hope that by adding them now, it helps describe what I'm trying rather badly to explain? I added longtitudal fuselage formers along the high points of the jet pipes (looking from the side) and it helped loads with the skinning. The longtitudal fuselage formers along the jet pipe Also, the size that you're building, the additional strength and internal support will stop the 3mm panels being prone to flexing and damage when you're handling the beast! Even glassed, if you have insufficient support for the skin, you'll have to be very careful when transporting it and bearing in mind your comments about the strength required for the landings, I've got to recommend the additional 6mm formers. Such neat work Monz and unbelievable progress. Well done. It's going to be MASSIVE! roy Edited By Electriflier on 26/11/2013 11:29:56 Edited By Electriflier on 26/11/2013 11:46:15 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.