Chris Hannover - Germany Posted January 7, 2010 Author Share Posted January 7, 2010 Thanks Ron!I'm still thinking what "baffle" is in German, but if i understand correctly, it should be something like a "channel" for the airflow as you mentioned. I found this pic somewhere on the net.Your pics are very helpful too!Thanks,Chris Link to comment Share on other sites More sharing options...
mhorina Posted January 7, 2010 Share Posted January 7, 2010 Chris, I enlarged your photo and the shields I spoke of are on the top of the cyl. heads and are attached to the rocker arm boxes and the ring. They are a stamped piece of metal not part of the ring.The ignition wires (looking from the front) that go to the front of all the cyls. (front and back rows) do not pass through these shields. The wires that go to the back of each cyl. pass through these shields and hold them in place keeping them away from laying on the exhaust and intake pipes on the back side of the cyls. Or thats what I was able to see. Thank you Ron and Chris for these photos they are better then any I had. Mike Horina Link to comment Share on other sites More sharing options...
Chris Hannover - Germany Posted January 8, 2010 Author Share Posted January 8, 2010 Hi Mike,i see you. But it will be hard for me, or nearly impossible to scratch these stamped sheets. So the ring will do the work. You are very right, i just put together the engine and cowling, mounted it to the fuselage and once you mount the prop, you won't see anything of the engine.Drop me a PN, i have some more pics of the P&W engines, or do a Google search for pictures.Cheers,Chris Link to comment Share on other sites More sharing options...
bdthoresen Posted January 8, 2010 Share Posted January 8, 2010 Chris- Happy new Year, and Welcome back! I have been wondering where the heck you had gone......I hope all is well. I love the work on the Thunderbolt so far, looking good! I know what you mean about building for other people. I quit seven years ago, and I have not been able to get myself straight still! Still cannot commit to finishing anything really. It is tough not being able to be excited about something you love. Anyway, keep it up. Cannot wait for the next installment! THOR Link to comment Share on other sites More sharing options...
Chris Hannover - Germany Posted January 8, 2010 Author Share Posted January 8, 2010 Hi THORand happy new year too! Yep, i'm glad to be back in the saddle again. It was time to kill my lazy kind in modelling things Thanks & Cheers,Chris Link to comment Share on other sites More sharing options...
Cees Broere Posted January 8, 2010 Share Posted January 8, 2010 Glad your'e back Chris, Your excellent paintfinishing techniques were missed at LSP. Cheers Cees Link to comment Share on other sites More sharing options...
Chris Hannover - Germany Posted January 8, 2010 Author Share Posted January 8, 2010 Thanks Cees,but i'm not sure for this one with the paintfinish. this will be my first NMF with Alclad... Chers,Chris Link to comment Share on other sites More sharing options...
Out2gtcha Posted January 8, 2010 Share Posted January 8, 2010 ............i'm not sure for this one with the paintfinish. this will be my first NMF with Alclad... Chers,Chris Well if you were ever up for it you could always try REAL metal for your NMF.....I know first hand how pretty Jugs turn out in foil:Cheers, and keep the pics comin! Brian Link to comment Share on other sites More sharing options...
KOTR Posted January 8, 2010 Share Posted January 8, 2010 Nice to have you back again here, I really missed your stunning builds. And this one looks like its off to a good start again! Link to comment Share on other sites More sharing options...
Chris Hannover - Germany Posted January 9, 2010 Author Share Posted January 9, 2010 Thanks Brian & KOTR!Brian, that is fantastic work! Looks pretty cool, but i will give the Alclad stuff a go.I'm now working on the cockpit befor start painting the engine. Pics will follow soon, but the PE parts needs a little time to handle Cheers,Chris Link to comment Share on other sites More sharing options...
Allan Peters Posted January 10, 2010 Share Posted January 10, 2010 Regarding the baffles for directing the cooling air around the cylinders, there is no ring and no disk. The plates over top of the cylinder heads link together to form what looks like a ring, this forms a 'seal' to the cowl. In between the cylinders there are cuffs that closely hug the sides of the cylinders and are fastened to the cylinder to the rear, thusly blocking off any open spaces between the rows of cylinders and forcing all air entering the cowl to flow through the cooling fins and not be wasted by passing around the cylinders and heads. As an example the left side baffle on a front row cylinder bolts to the right side baffle of the cylinder to it's left in the back row. The baffles are all staggered this way around the entire engine. It is easy to understand than it is to explain. If you can follow the drawing it will all makes sense. From the book R2800 Pratt and Whitney's Dependable Masterpiece: I hope this clears things up a little. These baffles are very hard to see if you don't know what you are looking for. Even then they get lost in the dark spaces between the cylinders. Regards, Allan Link to comment Share on other sites More sharing options...
mhorina Posted January 10, 2010 Share Posted January 10, 2010 Allen, Thank you for the picture. Your explanation is clear enough. The picture lets you see what your speaking about. Thanks again. Mike Horina Link to comment Share on other sites More sharing options...
Chris Hannover - Germany Posted January 11, 2010 Author Share Posted January 11, 2010 Thanks for the pic Allen!If all buffles are together in place, it looks like a ring from the side, as you can see in the first pic here on page two. It sure isn't one, but it looks like that Thanks & Cheers,Chris Link to comment Share on other sites More sharing options...
timvkampen Posted January 11, 2010 Share Posted January 11, 2010 This will be a great build no doubt! Link to comment Share on other sites More sharing options...
Chris Hannover - Germany Posted January 11, 2010 Author Share Posted January 11, 2010 Thanks Tim! At least i hope so... Cheers, Chris Link to comment Share on other sites More sharing options...
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