Former Member Posted August 26, 2014 Share Posted August 26, 2014 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted August 26, 2014 Author Share Posted August 26, 2014 Well Percy, it was certainly sold to me as such, and it does the job - at the moment at least. Perhaps you are right though, a search throws up a number of variations for metal countersinks - these seem to have a slightly different cutting pattern. Anyway I don't want to use anything too rapid in cutting for fear of going right through the fitting. Spent a bit of time looking for info on that spruce glue problem - some quite interesting stuff out there although I have not found anything on long term decay issues. There could be some similarities with the glues used by instrument makers - I did start building a violin a few years ago and was using animal glue for that - a spruce back if I remember rightly and a real pain to plane the contact surfaces really flat. It's still largely in bits though and I doubt that it will fly. No progress tonight, earning a living has got in the way. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 2, 2014 Author Share Posted September 2, 2014 The fuselage is taking shape now and has 3 dimensional form. Have partly glued the first two 1/4 ply formers and have been dry fitting the remainder. Need to proceed cautiously now as the order of assembly is critical. The fit of the parts continues to be very good although I suggest that a couple of passes of a 1/4 and (as appropriate) 1/8 Permagrit makes fitting very easy. Mostly you can assemble the main formers dry as in the photos that follow. of course one can't resist the entirely pointless process of putting things like the pilot in for a trial fitting! Tiger Terry weighs in at 169g and looks very comfortable in his new office. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 2, 2014 Author Share Posted September 2, 2014 Edited By Trevor Rushton on 02/09/2014 21:32:37 Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 2, 2014 Author Share Posted September 2, 2014 Don't try building the model without a couple of Permagrit tools; the 1/4 inch file is particularly useful. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 2, 2014 Author Share Posted September 2, 2014 Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 2, 2014 Author Share Posted September 2, 2014 The bottom rear spar fixing is made up of 2 laminations of cmc cut epoxy board and is a very tight fit in the lower 1/4 ply fuselage rails. The wing fitting is beginning to make sense now. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 2, 2014 Author Share Posted September 2, 2014 Long view of the fuselage minus the top formers. The rear is drawn together and bolted; I was thinking that I may have to steam or slot the spruce longerons, but they seem sufficiently flexible as they are. I will complete the front section before I try properly. Quote Link to comment Share on other sites More sharing options...
cymaz Posted September 2, 2014 Share Posted September 2, 2014 Coming along well......onward and upward Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 5, 2014 Author Share Posted September 5, 2014 Okay, I watched the Tiger 9 again at the Shoreham show last week and now I have a question. All of the Tigers landed and then taxied back with down elevator. Now whenever I have taxied my cirrus moth and the smaller Tiger I have held in full up elevator to keep the tail on the ground. Am I missing something? Down elevator surely means it's more likely that the tail will want to lift under the effects of prop wash? Quote Link to comment Share on other sites More sharing options...
Gary Binnie Posted September 5, 2014 Share Posted September 5, 2014 Taxiing into wind, up elevator, downwind down elevator. The trim is set fully nose up for taxiing, elevator forces are quite high (not balanced) so actually holding up elevator in is not easy and I don't bother. The wind strength and direction can have more effect than the propwash. When the tailskid is on the ground the rear end is very heavy, bursts of throttle with rudder and forward stick lighten it and reduce the turn radius. With a person in the rear cockpit a Tiger will not tip on its nose at low speed until the fuselage top longeron (cockpit door hinges) is quite well nose down. Without a person in the rear cockpit the tail can be lifted about six feet in the air before it tries to tip over. In this photo it is perfectly balanced, the centre of gravity is directly above the wheel axles. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 5, 2014 Author Share Posted September 5, 2014 Thanks for the explanation Gary; i'm still having trouble stopping the models from nosing over, but I understand what you are saying. BTW, I missed AN last week - everything okay with her? Trevor Quote Link to comment Share on other sites More sharing options...
Gary Binnie Posted September 5, 2014 Share Posted September 5, 2014 Yes, all good and safely in the hangar. It's a bit different with models, the drag of grass acts like brakes on the wheels and things change dramatically! There are Tigers with brakes, when these are fitted the wheels are moved subtly forward to try to prevent nose overs, The DH.82C (Canadian version) had brakes and a tail wheel as standard (cheating I reckon!). Build is coming on nicely, my Flair Tiger is grounded for the need of a SLEC round fuel tank and some engine tuning problems. Quote Link to comment Share on other sites More sharing options...
cymaz Posted September 6, 2014 Share Posted September 6, 2014 Posted by Trevor Rushton on 05/09/2014 23:21:31: Thanks for the explanation Gary; i'm still having trouble stopping the models from nosing over, but I understand what you are saying. BTW, I missed AN last week - everything okay with her? Trevor Have you tried bring the main wheels forward a touch? I have the wheels 2/3 in front of the leading edge. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 6, 2014 Author Share Posted September 6, 2014 Thanks Gary and Cymaz the wheels on the DB tiger are quite small and longer grass certainly does not help. The much larger ones on the 1/4 scale will be better I think. Cymaz, I have had a look at the undercarriage on the db and I'd have to cut a few mm out of the front wire struts and join them again with a length of brass tube, but it's certainly possible. Moving the rear struts forward is not an option owing to the location of the hard points. I had been toying with the idea of some kind of skid, but yours is a much neater solution. Trevor Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted September 9, 2014 Author Share Posted September 9, 2014 Assembled the elevator and rudder controls tonight. The cranks are made from epoxy board and are suitably robust. I am pleased with the feel of these components. Quote Link to comment Share on other sites More sharing options...
ron thornhill Posted September 29, 2014 Share Posted September 29, 2014 Hi Trever I hope this build blog has not dried up. I know I am one of those people that read the blogs but do not contribute to them. I'm building the same kit, and wanted to ask if anyone out there has come up with a decent wing retaining system for transportation. Ron. Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted October 1, 2014 Author Share Posted October 1, 2014 Hi Ron No, rest assured it s not dead! I am just taking a short break to complete a Skyways Kestrel to replace my recently departed Kyosho Calamoto. ( see separate build log). How far have you got with yours? I have not really thought about the wing storage system yet; it's an interesting problem, Perhaps a pair of blue foam spacers that would slide in between the wings at an angle and could then be rotated vertically to wedge in position. The spacers could have horizontal holes through them (i.e. parallel with the chord) that could then slide over a frame containing 4 dowels. The arrangement could be contrived such as the rack containing the second set of wings slides over the same dowels. Does that make sense? I will doodle something to explain what I mean. Trevor Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted October 1, 2014 Author Share Posted October 1, 2014 Quote Link to comment Share on other sites More sharing options...
Trevor Rushton Posted October 1, 2014 Author Share Posted October 1, 2014 My initial thoughts above. I guess that a piece of elastic could be used to clamp round the wings prior to un bolting them from the fuselage.one could add a foam spacer between each set of wings plus a similar top board that could be locked in position once it has been slid over the dowels. Edited By Trevor Rushton on 01/10/2014 22:41:39 Quote Link to comment Share on other sites More sharing options...
Gary Binnie Posted October 1, 2014 Share Posted October 1, 2014 On the Flair Tiger the wings are stored with a single hardwood jury strut that connects both root ribs using the wing bolts, very rigid and gives a carrying handle. Can this idea be used? GB Quote Link to comment Share on other sites More sharing options...
cymaz Posted October 1, 2014 Share Posted October 1, 2014 This? Quote Link to comment Share on other sites More sharing options...
ron thornhill Posted October 2, 2014 Share Posted October 2, 2014 Thanks Gary that sounds similar to how I store my Airco DH1a but that does not have staggered wings. Cymaz I was thinking of something along those lines but right on the root and not on a rib, but you have convinced me that that is the way to go. Ron Quote Link to comment Share on other sites More sharing options...
alan alldritt Posted November 26, 2014 Share Posted November 26, 2014 Hi Trevor, Do you (or anybody else) know whether Falcon Models is still in business? His website appears to have disappeared - I did email Chris Stewart a few months back with a possible furture Tiger Moth kit but can no longer contact him ATB Alan Quote Link to comment Share on other sites More sharing options...
Tomtom39 Posted November 26, 2014 Share Posted November 26, 2014 I couldn't find anything either. I am led to understand that Steve Webb is selling some of the Falcon Models range - just checking d SW website (although I can't see anything for the 1/4 scale Tiger Moth - there were some excellent additional add on's to the basic kit) Quote Link to comment Share on other sites More sharing options...
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