Matt Carlton Posted December 15, 2020 Share Posted December 15, 2020 Hello chaps. Yes, I know it's not an RCM&E plan, but since the demise of dear old Rodeo Muddler, I crave your indulgence! Nothing hugely impressive, just posting for posterity as much as anything in the event my phone goes kaput. Slightly modified centre section with full depth brace out 2 bays and a bolt fitting rather than bands. Not the greatest build, but reasonably light. What you see cones in just under 9oz, including tank, engine mount, snakes etc. I'll update from time to time, but I tend to build in fits and starts. Cheers Matt Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted December 15, 2020 Share Posted December 15, 2020 Hi Matt, Have you finished the wings after the confusion? Looks good to me. Looks like Christmas has come to your house Cheers Steve Quote Link to comment Share on other sites More sharing options...
Geoff S Posted December 15, 2020 Share Posted December 15, 2020 Looks an attractive model. I'm surprised it appears it's going to be glow-powered because I thought Derek was one of the early advocates of electric power. I'm with you on the sporadic building. I haven't done any myself for a week or two. I like building but I like it leavened by a bit of flying which has been in short supply for me this year. Geoff Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 15, 2020 Author Share Posted December 15, 2020 Steve: No, but to be honest I'm just going to build them as a really straightforward D box, just using the plan for dimensions and section. Original is a half D box, but I think the extra rigidity and ding proofing is worth the slight weight penalty. Yep, the sprogs insisted that we decorate. I'll be fed up with it by tomorrow, but I'll grit my teeth 😬 Geoff: I have an OS 20FP looking for a home, hence I have gone IC, plus all my field equipment is IC. That may change, but I have a soft spot for IC, even if it is noisy and messy. Edited By Matt Carlton on 15/12/2020 14:49:49 Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 16, 2020 Author Share Posted December 16, 2020 Here's what I have done with the wing so far. Very simple, very traditional. 3/32" ribs, 1/16" vertical grain webs, 3/8" x 1/8" hard balsa spars, 1/16" sheet D-box. Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted December 16, 2020 Share Posted December 16, 2020 If this is the amilia I think it is, a free plan from a mag way back in the day, I had a brief flight of one of these. It seemed very heavy in flight but ok. Later that afternoon the owner/builder was flying it, and it suffered a wing failure. I sure I have the mag and plan as it looked a good model. Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 16, 2020 Author Share Posted December 16, 2020 It was a free plan yes. It doesn't seem particularly heavy, but we'll see. Wing failure could be down to the balsa spars, hence I have webbed mine, but could also be down to the pilot. Not every model is stressed for full throttle 'bank and yank' antics! Quote Link to comment Share on other sites More sharing options...
PatMc Posted December 16, 2020 Share Posted December 16, 2020 If it was electric power back then it would probably have had a 600 brushed motor & 7 or 8 sub C nicads, together weighing in the region of 20 oz - 24 oz. Quote Link to comment Share on other sites More sharing options...
Piers Bowlan Posted December 17, 2020 Share Posted December 17, 2020 From the plan the original shows an OS 20/26 engine although I agree, had it been an electric version 'back in the day' it would have been heavy and under-powered on a 600 brushed motor. The plan does state hard balsa for the spars for good reason (spruce, even better) but a good move to fit spar webs Matt. Coming together nicely, what engine are you fitting? Edited By Piers Bowlan on 17/12/2020 06:49:15 Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 17, 2020 Author Share Posted December 17, 2020 Hi Piers, I have an OS20FP 2 Stroke. Not the ideal powerplant maybe, but it should be ample for the sort of pootling I intend to do with this model. I guess a low pitch prop maybe a 10x4. Might not sound ideal but it was sitting on the shelf. Quote Link to comment Share on other sites More sharing options...
Rich Griff Posted December 17, 2020 Share Posted December 17, 2020 The model was glow powered probably with an OS 15 or 20, built and flown by an oldish gentleman club member. It was not being flown hard and from memory ( I saw it fail in the air and crash ) the wing failed in a slight banked turn to its starboard side, failing beyond the fuselage on its port wing root area. It shattered on arrival with terra firma. The hieght at the failure was about 1 1/2 mistakes high. I tend to use spruce spars and have not had a wing or structural failure, yet.......not many rocket sticks about after Nov 5th......only found 6 or 7 this year. Edited By Rich Griff on 17/12/2020 09:53:35 Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 17, 2020 Author Share Posted December 17, 2020 The wing joint as designed looked a trifle suspect to me as well, hence I modified it to be a full depth brace which is firmly epoxied to the existing webs and the spars. The addition of extra sheeting for the D-box over the original top sheet only should also help matters in terms of torsional rigidity and possibly spanwise strength. We'll see. Good shout on spruce stick source! I'd not thought of that Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 18, 2020 Author Share Posted December 18, 2020 Bit of progress on the wings. Do we ever grow out of bench flying our half completed models??? 1 Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 20, 2020 Author Share Posted December 20, 2020 Did a bit more. Nearly time to press pause for Christmas... AUW at this point is 13.5oz. I reckon that engine, RC gear, u/c and covering will add another 18oz. Should be pretty close to 2.5lb AUW. Hoping for closer to 2lb. Assuming the old .20FP capable of 300w, (372 when new apparently) then 150W/lb seems likely. 1 Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 22, 2020 Author Share Posted December 22, 2020 Last one before I pack up for Christmas. I realise it's not as "cool" as some, but I'm reasonably happy. Quote Link to comment Share on other sites More sharing options...
Geoff S Posted December 22, 2020 Share Posted December 22, 2020 Looks cool enough to me. In fact it looks very cool but then, I'm not Geoff Quote Link to comment Share on other sites More sharing options...
Matt Carlton Posted December 22, 2020 Author Share Posted December 22, 2020 I have never been cool in my life as far as I know. At least, that's what my various offspring tell me! Quote Link to comment Share on other sites More sharing options...
Jonathan M Posted January 30 Share Posted January 30 Matt, how did the Amelia turn out in the end? Did you get your weight? How was it on the 20? 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.