perdu Posted January 3, 2021 Share Posted January 3, 2021 Belvedere blade sequence +x The blades are geared, contra-rotating if you like and will always pass in the same sequence where every blade turns inside the gap of the same opposing rotor. The big tubular thing in front of the rear rotor pylon is the coupling gearbox oil cooler and there is a shaft running along inside the roof of the cabin which joins both rotor head gearboxes. The thing about using a tube for the rotor head to turn in is what I did, I have lots of @John Aero Aeroclub struts and tube packages so I found a size of tube to sit inside the very oddly shaped holes on top of the housings and that would act as the axle for the spindles. If you do this I would advise making the tubes fit to the bottom of the fuselage from the top and ensuring the bottom of the tube has lots of glue on it so you can set the angles of the rotor heads permanently, with the right amount of forward tilt to the roto-rblade disc. (This picture is of the layout inside the Bristle 173, much the same as the Cedvedere except for the power plants. The oil cooling bit isnt on these.) I really am seriously thinking of this as a project sooner or later. 4 1 Link to comment Share on other sites More sharing options...
perdu Posted January 3, 2021 Share Posted January 3, 2021 Further on the blades. Why on god's earth would a helicopter designer bung seventy zillion rivets on top of the aerodynamical surfaces of the rotor blades? I asked myself and went looking, the blades are smooth surfaces top and bottom on Belvederes. And you have already removed rivets on the fuselage, so why not take fifty tons of parasite drag from the blades? Huh? OCD Classes available on application. 😒 7 Link to comment Share on other sites More sharing options...
CedB Posted January 3, 2021 Author Share Posted January 3, 2021 15 hours ago, perdu said: I did. I rather prefer the look of yours Ced. Enticing in white and silver.👍 Thanks Bill. Pretty thing isn't it? 14 hours ago, giemme said: Agreed! Great job, Ced! Ciao Thanks Giorgio 13 hours ago, rob85 said: Looks very cool with the blades and and in the white and silver! Really nice work Ced, and I’m looking forward to you solving the dangle of your rotor. Rob Wait no longer Rob - see below 3 hours ago, Brandy said: Lovely result Ced, well worth the extra effort. Ian Thanks Ian 3 hours ago, Hamden said: Stunning result Ced you have raised the bar, silk purse from sow's ear! Stay safe Roger Cheers Roger 2 hours ago, Corsairfoxfouruncle said: Well done Ced.. ... You keep tackling the whirlybirds for both of us, they're my nemesis. Haven't had a successful build of one since the 80’s. Thanks Dennis They're not that bad but I admit I'll be staying away from anything with too many bits stuck on the outside! 2 hours ago, perdu said: Belvedere blade sequence +x The blades are geared, contra-rotating if you like and will always pass in the same sequence where every blade turns inside the gap of the same opposing rotor. The big tubular thing in front of the rear rotor pylon is the coupling gearbox oil cooler and there is a shaft running along inside the roof of the cabin which joins both rotor head gearboxes. The thing about using a tube for the rotor head to turn in is what I did, I have lots of @John Aero Aeroclub struts and tube packages so I found a size of tube to sit inside the very oddly shaped holes on top of the housings and that would act as the axle for the spindles. If you do this I would advise making the tubes fit to the bottom of the fuselage from the top and ensuring the bottom of the tube has lots of glue on it so you can set the angles of the rotor heads permanently, with the right amount of forward tilt to the roto-rblade disc. (This picture is of the layout inside the Bristle 173, much the same as the Cedvedere except for the power plants. The oil cooling bit isnt on these.) I really am seriously thinking of this as a project sooner or later. 1 hour ago, perdu said: Further on the blades. Why on god's earth would a helicopter designer bung seventy zillion rivets on top of the aerodynamical surfaces of the rotor blades? I asked myself and went looking, the blades are smooth surfaces top and bottom on Belvederes. And you have already removed rivets on the fuselage, so why not take fifty tons of parasite drag from the blades? Huh? OCD Classes available on application. 😒 Thanks Bill Your post came too late for me, sadly, but they'll be useful for future builders I'm sure. Well done for counting the rivets on the blades! I have no idea why Airfix moulded them but they do add to the 'old Airfix' feeling. That's my excuse! This morning's final bits. Drill out the rotor holes. Increasing sizes of drill to take the tube, constantly chanting 'Don't split the seam, don't split the seam': Hard to work with fingers crossed… To get this angle of dangle: …I taped the blades together with some padding: I'd already cut the tube and, to avoid it dropping into the hole, stuck it to the rotor head: That will also let me remove the blades if required. That gave me this: Now, I know Bill's posted that the blades spun into teach others gaps (cheeky) BUT, if I had them 'realistic', she won't fit into the gap in the cabinet: …so they'll have to stay like that. Sorry Bill. I'm not pleased enough with this to RFI it so some pictures follow here. 18 Link to comment Share on other sites More sharing options...
CedB Posted January 3, 2021 Author Share Posted January 3, 2021 Some final shots. I must remember to clean up the canopy glue before it dries - it's too rubbery afterwards. As always, thanks to everyone for their help, support and companionship during this build- really appreciated Now, back to the X-1. 21 Link to comment Share on other sites More sharing options...
stevehnz Posted January 3, 2021 Share Posted January 3, 2021 That look quite simply splendid Ced. 👍 Steve. 1 Link to comment Share on other sites More sharing options...
chrislowe Posted January 3, 2021 Share Posted January 3, 2021 Great result Ced! Top job. 1 Link to comment Share on other sites More sharing options...
Heather Kay Posted January 3, 2021 Share Posted January 3, 2021 Considering what you started with this has turned out brilliantly. Well done! 1 Link to comment Share on other sites More sharing options...
perdu Posted January 3, 2021 Share Posted January 3, 2021 Splendid. Suits it proper Ced, nicely done. 1 Link to comment Share on other sites More sharing options...
AliGauld Posted January 3, 2021 Share Posted January 3, 2021 When you consider the starting kit that is a fantastic finish and a beautiful build. Thanks for sharing, Cheers, Alistair 1 Link to comment Share on other sites More sharing options...
giemme Posted January 3, 2021 Share Posted January 3, 2021 I can only second all previous comments, Ced - beautiful result! Ciao 1 Link to comment Share on other sites More sharing options...
Tomoshenko Posted January 3, 2021 Share Posted January 3, 2021 Excellent work Ced. 1 Link to comment Share on other sites More sharing options...
Spookytooth Posted January 3, 2021 Share Posted January 3, 2021 Yet another ancient one finished? Not you Ced, the old Airfix kit. That old that the moulds were carved out of stone. Nice work sir. Simon. 3 Link to comment Share on other sites More sharing options...
hendie Posted January 3, 2021 Share Posted January 3, 2021 superb job Ced. 1 Link to comment Share on other sites More sharing options...
Brandy Posted January 3, 2021 Share Posted January 3, 2021 4 hours ago, perdu said: Further on the blades. Why on god's earth would a helicopter designer bung seventy zillion rivets on top of the aerodynamical surfaces of the rotor blades? I asked myself and went looking, the blades are smooth surfaces top and bottom on Belvederes. And you have already removed rivets on the fuselage, so why not take fifty tons of parasite drag from the blades? Huh? OCD Classes available on application. 😒 I'm glad I wasn't the only one to notice that! Ian 1 1 Link to comment Share on other sites More sharing options...
Terry1954 Posted January 3, 2021 Share Posted January 3, 2021 Top job there Ced! Terry 1 Link to comment Share on other sites More sharing options...
perdu Posted January 3, 2021 Share Posted January 3, 2021 2 hours ago, Brandy said: I'm glad I wasn't the only one to notice that! Ian Me too Ian 1 Link to comment Share on other sites More sharing options...
CedB Posted January 3, 2021 Author Share Posted January 3, 2021 Thanks Steve, Chris, Heather, Bill, Alistair, Giorgio, Tomo, Simon, hendie and Terry - appreciated, it was a bit of a sow's ear Thanks again to @AdrianMF for the kit, a great addition to my collection. 7 Link to comment Share on other sites More sharing options...
rob85 Posted January 3, 2021 Share Posted January 3, 2021 Cracking finish Ced, and looks great in the cabinet. Rob 1 Link to comment Share on other sites More sharing options...
keefr22 Posted January 3, 2021 Share Posted January 3, 2021 Wonderful work Ced, she's a beauty! Keith 1 Link to comment Share on other sites More sharing options...
CedB Posted January 4, 2021 Author Share Posted January 4, 2021 Thanks Rob and Keith When we're back to 'normal' I plan a trip to Ikea for a new cabinet - that one's getting full! 1 Link to comment Share on other sites More sharing options...
AdrianMF Posted January 4, 2021 Share Posted January 4, 2021 Super result from an unusual and challenging kit. Your issue about blade meshing is fully appreciated - helicopters are a nightmare to store and display if their rotors aren’t folded! Regards, Adrian 1 Link to comment Share on other sites More sharing options...
CedB Posted January 4, 2021 Author Share Posted January 4, 2021 Thanks Adrian - pleased that you like what I did with your kind donation and thanks again for the kit, much appreciated 1 Link to comment Share on other sites More sharing options...
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