A.A. Barry Posted February 27, 2015 Share Posted February 27, 2015 Well here I go again, my pet subject....Westland Whirlwind it does not seem like 8yrs since I built the last one Armed with a plan by Harold Osborne and waiting on LDS for the kit, I have asked the the laser cutters to reduce the aft formers and tail feathers balsa, in thickness, in an effort to get the rear as light as possible my thoughts turn to the power plants to be used. Turnigy G46's should get this aloft, I'll consult my mate who is a genius on E.P. to work out the prop size later 1 battery will be used in the nose, 4s 8000mah, there is ample room up ft, with access to it via a detachable nose cone Electric retracts on dual struts should hold it off the ground I'm going to cheat a little and add 2" to the wing span, the last one had 4" added and flew like a trainer I'm going to make the nacelle, forward of the wing removable, as per the original, and form them up from foam, to make a resin/fiberglass shell Early days yet, but procurement of bits is happening. Until more news Cheers Edited By A.A. Barry on 27/02/2015 14:14:47 Quote Link to comment Share on other sites More sharing options...
will -0 Posted February 27, 2015 Share Posted February 27, 2015 Yay more whirlwinds Quote Link to comment Share on other sites More sharing options...
IanN Posted February 27, 2015 Share Posted February 27, 2015 Watching this one Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted February 28, 2015 Author Share Posted February 28, 2015 While I'm waiting for the laser kit to arrive, I thought I might make a start on the nacelle cowling, somehow I managed to aquire a plan of the said model yrs ago, so I have copied the nacelle and will transfer the image on to dummy balsa formers, with the correct profile, as this model is built on the crutch system, I will have to make a left and a right side of each nacelle...., ....now for the formers out of scraps.....ummm I am going to build the fowler flaps into it as well, driving the out and down will be by Hs 85mg, located in the nacelle rear bit, the driving rod will be pivoted inside the stationary part of the nacelle, I got this idea from Vance Mosher's whirly build Barry Edited By A.A. Barry on 28/02/2015 06:11:36 Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted February 28, 2015 Share Posted February 28, 2015 sounds good if a tad complicated. will love watching this build. Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted February 28, 2015 Author Share Posted February 28, 2015 This is the working plan of the nacelles, Iv'e highlighted some of the structure as the fuz is also shown ...confusing Edited By A.A. Barry on 28/02/2015 10:26:44 Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 1, 2015 Author Share Posted March 1, 2015 The process has begun, formers cut and the centre keels pinned to a flat board, the framework is not glued yet, but from C5 forward, is the starting point of the F/Glass cowl Once I'm happy with the set up and glued, polyurathane foam will be added in between the formers, then sanded down to get the correct profile,twill weave will then be laid over and resin applied.......hopefully, so far so good Thinking about the process... perhaps before the cloth is laid down, cling wrap could be laid over the foam and structure first, that could save a great deal of pain, when F/Glass cures.... Edited By A.A. Barry on 01/03/2015 05:22:44 Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 2, 2015 Author Share Posted March 2, 2015 More progress, foam sanded down to the shape of formers.. now for the other 1/2 because the plan only gives a l/h view, I tape the plan to one of the windows, and drew the outline on the other side.. Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 26, 2015 Author Share Posted March 26, 2015 WELL, HAPPY CHAPPY, I am, the short kit arrived this morning from USA, and what a delight,3 large plans, I mean LARGE, 3 mts long, the wood is excellent and the ply is even with no knots. I asked him to reduce the tail feather wood size, and that is done, they even supplied 2 plans of the Fuz, so there is a left and r/h building plan, as it is built on the crutch method The U/C will have 2 oleo's per wheel , H/K do a small trike set up that has 8mm dia oleo's perfect, with retraction by Eflite large electrics. Pins need to be silver soldered yet So now to clean down the work bench and get cracking Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 26, 2015 Share Posted March 26, 2015 Interesting build Barry, I shall be watching John Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 26, 2015 Author Share Posted March 26, 2015 After the first bit of drooling was over, I ventured further into the box of goodies, not only did LSD cut my modified wood parts thickness, he also supplied the orginonal parts as well.....now that's that's service for ya Barry Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 27, 2015 Author Share Posted March 27, 2015 Started with the tailplane today, all the parts fitted excatly, Laser Design Services know there stuff, built over the plan and looks good so far Quote Link to comment Share on other sites More sharing options...
Glenn Stratton Posted March 27, 2015 Share Posted March 27, 2015 Looking forward to watching your progress Barry, I too have a soft spot for the Whirly since building the Airfix kit in my youth. Quote Link to comment Share on other sites More sharing options...
Chris Freeman 3 Posted March 27, 2015 Share Posted March 27, 2015 Hi Barry I will watch this thread as I enjoy the Whirlwind as well. Not sure if you recall but I built the Peter Wilson one a few years ago for Electric. It was a great flying aircraft, might still enlarge the plans and build one around 90 inches. Regards Chris Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 27, 2015 Author Share Posted March 27, 2015 Chris, yes that's the same one as I built but powered it with OS 56 I.C motors, and it also flew very well, (I still have it ), I did add 2" to each inner wing panel. It had a couple of 1 engine landings, but there was no sign of wing drop....lucky I suppose, it was very crowded in the nacelles tho. In this one I'll stick a 4 cell x 8000 battery in the nose, and run the 2 motors of that, should get at least 8mins That,s the plan, Dylan at Laser services ( UK ), has a 96" in progress, but that size is a little too big, for me Cheers Edited By A.A. Barry on 27/03/2015 10:24:40 Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 27, 2015 Author Share Posted March 27, 2015 Chris a Q, did you alter the tailplane size at all??? Barry Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 29, 2015 Author Share Posted March 29, 2015 One of the U/C legs set up, the retracts are 100 deg movement, a little more than plan, but at least it wont tip over on landing, I could use bigger wheels, I'll see our it pans out Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 31, 2015 Author Share Posted March 31, 2015 Well the Tail feathers are built, and weighed in at 78g..not bad I thought, and so to the fuz, bench was cleaned down and Cling wrap laid over the plan built on the "crutch system" parts added, and planking began, AGAIN...oh well it makes for a light structure Edited By A.A. Barry on 31/03/2015 12:37:46 Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted March 31, 2015 Share Posted March 31, 2015 Lovely build so far Mr Barry sir. enjoying the build. Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 31, 2015 Author Share Posted March 31, 2015 Thx Tony, my only concern is that when I remove the 1/2 Fuz from the bench, is that it dosn't warp,....like a banana, the other 1/2 formers are glued directly onto the first 1/2.....it must work ok ???? Barry Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 31, 2015 Share Posted March 31, 2015 Lots of nice curves to work on Barry, done a few using crutch and plank method and never had one warp yet I can't recall ever seeing one of these flown...how they behave ? John Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted March 31, 2015 Author Share Posted March 31, 2015 John, they fly great, the I.C. version I have ( avatar ) flys like a trainer, there was no hint of the wing drop, even with 1 engine out... maybe luck... but 3 times, does prove something Barry Edited By A.A. Barry on 31/03/2015 13:35:01 Quote Link to comment Share on other sites More sharing options...
Chris Freeman 3 Posted April 1, 2015 Share Posted April 1, 2015 I did not change the size of the tailplane and only fully sheeted the structure. A friend of mine also built one from the same plan but his was glassed and quite a bit heavier than mine but it still flew well. He then got plans from the USA for a lage one that I think is about 120" wingspan. My Whirlwind was great to fly and had quite a few flights on it but was lost when my house burnt down due to a lipo fire. Chris Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted April 5, 2015 Author Share Posted April 5, 2015 With 1/2 the Fus removed, work can start on the interior, control cables, cockpit floor, servo mounts and the tail wheel the elevator rod drives up through the centre on the fin, because the tail wheel is a folding type, steering needs to be done by cable from the front, otherwise it's reversed if taken off the rudder, so a small servo will drive the cables, all of this to be done before the other side planking can be done lots of thinking, thinking, thinking,.but fun cheers Barry.... Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted April 6, 2015 Author Share Posted April 6, 2015 All the control cables and rods fitted, planking finally finish on the fus. now to get the glue of me pinky's and sand down. next I'll sheet the fin, and start on the nacelles Quote Link to comment Share on other sites More sharing options...
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