Phil.Taylor Posted June 30, 2020 Share Posted June 30, 2020 14 hours ago, wookman said: Whoops. More mending opportunities. Oops... Just needs the same treatment as the Acacia - now you've practiced it'll be easy(ier) Use carbon this time - skinny fus Phil. Link to comment Share on other sites More sharing options...
oipigface Posted June 30, 2020 Share Posted June 30, 2020 2 hours ago, wookman said: Hi Andy. Don't quite get what you have done there, any chance of a bit of verbage by way explanation please. I have a feeling you might have misinterpreted my post (not all that clear having re-read it), the cracks are in the joiner on the front where the joiner exits the fuselage / enters the wing box. I think he has, too. But the tip is one worth following. Cheers, Andy. 1 Link to comment Share on other sites More sharing options...
wookman Posted August 10, 2020 Author Share Posted August 10, 2020 New joiner sourced from Martin Weberschock. Thanks to Greg for helping with the transport. Just needs a minor bit of fettling to get the correct fit. It’s close but not quite there. Must sort out the fuselage now! Link to comment Share on other sites More sharing options...
wookman Posted November 22, 2020 Author Share Posted November 22, 2020 Started on the Radical nose today. Strip out the gear and have a go at straightening the nose. There is no way to get it back straight because of the form of the break. The nose was only hanging on by half of the remaining side so a short bit of surgery with a nice sharp Swan Morton no 10 and we have a two piece fuselage. Drastic? Well no not really. It was 4/5 of the way to being off anyway. The control runs were bent in the prang and need sorting out. Also I can look at installing a crutch to help with the bending strength of the very skinny fuselage. The fuselage has obviously been repaired here before so it will be an interesting job to repair it better and stronger so that hopefully it doesn’t break there again. Link to comment Share on other sites More sharing options...
oipigface Posted November 23, 2020 Share Posted November 23, 2020 Best of luck with that Graham! I can never make up my mind how best to tackle breaks that are really close to wing seat, so I’ll be interested to see what you come up with. First off, I’d be thinking of an extended servo tray, but there’s probably a ballast tube in the way. Link to comment Share on other sites More sharing options...
wookman Posted November 23, 2020 Author Share Posted November 23, 2020 No ballast tube in the fuselage. It all goes in the joiner and wing root. Link to comment Share on other sites More sharing options...
wookman Posted November 23, 2020 Author Share Posted November 23, 2020 Not sure what to do with that strange doubler inside the fuselage that doesn’t really fit. It’s the bit on the back of the nose section. It has bits of thin ply added to it as packers to fit the rear of the fuselage. Link to comment Share on other sites More sharing options...
isoaritfirst Posted November 23, 2020 Share Posted November 23, 2020 That looks like an attempt at an internal repair. I have never liked putting in internal tubes etc, mainly as it's very hard to make them stick well. I think I would break that all away before putting the nose back in place, initially with cyano tack. Even if pieces are missing. Remove completely any servo tray and fit a new former that extends back across the break. Once it's solid enough to work on , I would then sand it right down removing as much as I could but leaving enough to allow new patches of glass cloth to be added. Possibly in lots of small pieces initially so as to build layers.before adding larger pieces and adding pressure and heat. Hopefully rebuilding into similar number of layers to the original, by replacing old glass with new, and feathering into the old stuff. Link to comment Share on other sites More sharing options...
wookman Posted January 29, 2021 Author Share Posted January 29, 2021 Started digging the old internal repair out of the fuselage. Not pretty! 1 Link to comment Share on other sites More sharing options...
heli_bee Posted January 29, 2021 Share Posted January 29, 2021 It always looks a bit drastic at this stage. The most difficult bit for me is the cosmetic finish after the repair. 1 Link to comment Share on other sites More sharing options...
MikeE Posted January 29, 2021 Share Posted January 29, 2021 That looks like it never stuck very well to the old fuselage, as I said above, I don't thin internal sleeving is the best method, unless you have a very good way to put the pressure in there. Link to comment Share on other sites More sharing options...
Kyri Posted January 29, 2021 Share Posted January 29, 2021 I found exactly that (getting enough pressure in there) and used a bike innertube doubled up, a latex one (thinner) and wrapped cling film round it as well to help prevent it sticking. Wrapped the nose in film then taped the joint with fibre reinforced tape before inflating using a decent pump. This stopped the inflation from opening the joint being repaired. Worked really well, I have some pics or a thread somewhere. 1 Link to comment Share on other sites More sharing options...
Andy_B Posted January 29, 2021 Share Posted January 29, 2021 im not sure why you would put that many scalpel blade covers in there ...... 2 Link to comment Share on other sites More sharing options...
Andy_B Posted January 29, 2021 Share Posted January 29, 2021 5 hours ago, heli_bee said: It always looks a bit drastic at this stage. The most difficult bit for me is the cosmetic finish after the repair. making it look nice on the outside can cover up all sorts of nastieness on the inside 1 Link to comment Share on other sites More sharing options...
heli_bee Posted January 29, 2021 Share Posted January 29, 2021 I agree. I have been caught out like that, but a good repair followed by a decent paint job always makes for a greater feeling of accomplishment. Link to comment Share on other sites More sharing options...
MikeE Posted January 29, 2021 Share Posted January 29, 2021 I've done both inner and outer. I would suggest you do the outer. It's a lot easier to do a good job. After all, all you are trying to donis replace the part that's broken, so grind it down and replace. Link to comment Share on other sites More sharing options...
wookman Posted January 29, 2021 Author Share Posted January 29, 2021 The plan at the moment is to run a carbon ply crutch horizontally back across the break. Get the nose back on and then grind off the outside and build it up again. Unless of course any of you have a better idea. 3 Link to comment Share on other sites More sharing options...
oipigface Posted January 30, 2021 Share Posted January 30, 2021 12 hours ago, wookman said: The plan at the moment is to run a carbon ply crutch horizontally back across the break. Get the nose back on and then grind off the outside and build it up again. Unless of course any of you have a better idea. Good plan. Have you considered a vertical stiffener as well? There may not be room of course. Link to comment Share on other sites More sharing options...
wookman Posted January 30, 2021 Author Share Posted January 30, 2021 I have, but I haven't come to a conclusive view on it yet. Might be time for some experimenting with cardboard, Blue Peter style, to see how it might work. Link to comment Share on other sites More sharing options...
MikeE Posted January 30, 2021 Share Posted January 30, 2021 Worth considering if you should leave an element of crumpe zone. For example, it easy to make the fuselage solid between the front wing incident pins, but if you do this you may scrap your wings instead of the fuselage in the next rough landing. IMO try to go back as close as possible to its original build. Similar number of layers and similar cloth. If you can get it all together and lined up using a crutch it would make it easy to sand back and re layer with patches of new cloth. Perhaps make the crutch out insulation board so you can break it out once it's done its job. Potentially with some foam board you could make a complete inner. Stick it in the back bit and shape the front to allow the front to be pushed into place. Perhaps around 50mm long, it would then give you something to press the layers of cloth down onto. Break it all out once it's done Link to comment Share on other sites More sharing options...
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