BiggTim Posted February 23, 2020 Author Share Posted February 23, 2020 Thanks, all! Alain - Good catch, I noticed that as well. I have already cut them off and am re-doing them. Out2gtcha and Alain Gadbois 2 Link to comment Share on other sites More sharing options...
John1 Posted February 23, 2020 Share Posted February 23, 2020 Question on the real thing - how common was this aircraft? Was it just a one-off mod or did these re-engined P-40's see service in significant numbers? BiggTim 1 Link to comment Share on other sites More sharing options...
LSP_Kevin Posted February 23, 2020 Share Posted February 23, 2020 Fantastic work, Tim! Designing and printing your own parts = tres impressive. Kev BiggTim 1 Link to comment Share on other sites More sharing options...
BiggTim Posted February 24, 2020 Author Share Posted February 24, 2020 (edited) 1 hour ago, John1 said: Question on the real thing - how common was this aircraft? Was it just a one-off mod or did these re-engined P-40's see service in significant numbers. The only sources I can find on it suggest that the Russians field modified around 40 of them, though I'm not sure where the source got that info. So, not a major player, and it reportedly didn't perform super well, but I found it an interesting subject. Tim Edited February 24, 2020 by BiggTim John1 and Alain Gadbois 2 Link to comment Share on other sites More sharing options...
Iain Posted February 24, 2020 Share Posted February 24, 2020 Brilliant project and work - love projects like this... Iain BiggTim 1 Link to comment Share on other sites More sharing options...
John1 Posted February 24, 2020 Share Posted February 24, 2020 20 minutes ago, BiggTim said: The only sources I can find on it suggest that the Russians field modified around 40 of them, though I'm not sure where the source got that info. So, not a major player, and it reportedly didn't perform super well, but I found it an interesting subject. Tim Works for me, I think it’s an awesome choice. I love slightly off- beat subjects. BiggTim 1 Link to comment Share on other sites More sharing options...
BiggTim Posted February 24, 2020 Author Share Posted February 24, 2020 (edited) I did some research on this to see how best to correct the humps and move forward with the exhaust pipes. I have a bunch of very detailed and dimensioned drawings of the M-105 (AKA VK-105PF) engine used in these conversions, though nothing that indicates the exact configuration used. I may post those drawings later, as I don't have access to them from work. Using those, I sketched out a quick layout of the exhaust ports on a piece of tape and aligned it with where I believe it would sit in the P-40E. I also did some looking around to try and determine what might have been sitting on top of the engine to necessitate the larger central hump, and how big it might have been. I found this picture showing a cylindrical oil tank (green) mounted right on top in exactly the right place and location, so I'm betting these conversions probably had something similar. That would also suggest there was likely an oil filler cap on top of the central hump. Based on this info, I am redesigning the two smaller humps as shown, and I will be leaving the central hump pretty much as-is, since it seems to fit the oil tank location pretty well. I will be adding a flush oil filler cap to the top of the hump. I will also be revising my plan for the exhaust pipes. I was going to do them much as Brengun did in their 1/48 conversion, but I now believe their configuration is inaccurate. You can see form this photo: they arranged the exhaust stubs evenly spaced. It now seems clear to me that these would not be evenly spaced, but spaced exactly as the exhaust ports on the cylinder head. You can also see this on the tape sketch above. It also seems that I will ave to extend my exhaust slot opening to the rear a bit more to account for the swept back nature of the pipes. More work to do this evening, if time permits. Tim Edited February 24, 2020 by BiggTim LSP_Kevin, Dany Boy, Greg W and 5 others 8 Link to comment Share on other sites More sharing options...
BiggTim Posted February 28, 2020 Author Share Posted February 28, 2020 Well, it's almost ready to try and make molds, as soon as I can get some new silicone ordered. Managed to actually model the pipes in Fusion and print them, so I'm pretty happy with that. I had some issues with the hollow rear end being too thin, but I corrected that by replacing it with a bit of copper tube. I'll try to take some better photos with the Canon this weekend, before I get to mold making. Tim Landrotten Highlander, LSP_Kevin, daveculp and 18 others 21 Link to comment Share on other sites More sharing options...
Shawn M Posted February 28, 2020 Share Posted February 28, 2020 thats fantastic! BiggTim 1 Link to comment Share on other sites More sharing options...
Alain Gadbois Posted February 28, 2020 Share Posted February 28, 2020 Excellent work on that unique modification! Alain BiggTim 1 Link to comment Share on other sites More sharing options...
Out2gtcha Posted February 28, 2020 Share Posted February 28, 2020 Yeah bud, that is pretty dang nice work! Any idea on scheme yet? Seems like there were a few cool ones. BiggTim 1 Link to comment Share on other sites More sharing options...
CZPetrP Posted February 28, 2020 Share Posted February 28, 2020 This is a very interesting project. I will watch. BiggTim 1 Link to comment Share on other sites More sharing options...
BiggTim Posted February 28, 2020 Author Share Posted February 28, 2020 40 minutes ago, Out2gtcha said: Yeah bud, that is pretty dang nice work! Any idea on scheme yet? Seems like there were a few cool ones. Honestly, I've only seen one scheme, though many different renderings of it. Always the same number, 20, same boring white paint. Odd thing is, I can't find any photographic sources for this plane at all, so I don't know where the scheme even came from. I know it's supposedly from the 196 IAP, but that's about it. The only other one out there, 27, is a two-seater. Again, no backup sources available. I might just make something up. Tim Dpgsbody55, Dany Boy and Out2gtcha 3 Link to comment Share on other sites More sharing options...
Out2gtcha Posted February 29, 2020 Share Posted February 29, 2020 I've seen the two seater snow camouflage, thats pretty cool looking BiggTim 1 Link to comment Share on other sites More sharing options...
Anthony in NZ Posted February 29, 2020 Share Posted February 29, 2020 Great work Tim...loving what you are doing here. Boy, that Klimov engine is very agricultural isn't it! Keep up the great work BiggTim and Dpgsbody55 2 Link to comment Share on other sites More sharing options...
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