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Build Thread, Page :  1   2   3   4   5  [ 6 ] (110 posts, 20 posts per page, 6 pages in total) [ < Prev ]
rayl, Comment for image # 3674616 Sep 16 10:34
David, I have been thinking about your problem here since you posted it. The issue is that the metal has been stretched when it was formed. What I would try is: Get yourself a piece of large hardwood dowel, the bigger the better, as long as it fits into your cowling. Round the end off a little bit to prevent the sharp edge from distorting the cowl. Get yourself a SMALL hammer, preferably with a nylon face, (Harbor Freight has on for about $4.00). Using the dowel as a horizontal mandrel, best if it is solidly clamped in something, start tapping the ridges flat and work away around the cowl. Go easy with the process and I think that you can fix the problem. My $.02 worth anyway. I don't think that you would be happy with a Bondo application on this thing.
David Duckett, Comment for image # 3674616 Sep 16 03:25
I think you're missing the point. I know what the indentations are for and have a fairly good idea how to fabricate the exhausts ( see my Sea Fury, Bearcats,109, and Skyraider builds). The problem is those three rings around the perimeter. They are ridges left over from the process which formed the cowl and are not part of the design. There are metal cowling on the Berkeley Savage in my hanger and they were perfectly smooth, albeit too small. There's probably some Bondo in my future,.....and someone who knows how to use it.
Skyediamonds1985, Comment for image # 3674615 Sep 16 22:31
The forward portion of the small intakes are for the oil coolers... my guess. If everyone is discussing about the circular rings around the cowl, then there might be a good reason particular to that variant. -Sky
Skyediamonds1985, Comment for image # 3674615 Sep 16 22:26
My guess is that the indentations are for the exhaust stacks that were the trademarks of the T-28 series. These same exhaust stacks were responsible for that distinctive "barking" noise so often associated with the Trojan trainers. Having said that, this is just an observation or suggestion, but rather than to smooth out the ridges, to actually make the most of it by adding extremely short simulated stacks to butt up against the forward portion of of the "dents" and then follow up by adding some Evergreen "tin roof" patterned plastic for the remainder of the "dent." I would've suggested "corrugated" but the company also makes "tin roof" patterns of varying numbers of "ribs" per square inch and to me, anyway, more accurately representative of the reason for the shaped cowl. The exhaust stacks are very short, almost hidden, unless one is to look at the cowl from behind. If the ridges are too shallow for the whole piece of Evergreen sheet, then perhaps some thin strips, like those of Don C's aileron on his DeHavilland Beaver, only more close together, might be a better alternative. - Sky
David Duckett, Comment for image # 3674614 Sep 16 05:11
Jim, that's all Greek except the cowl is indeed rigid.
meku, Comment for image # 3674614 Sep 16 01:18
Difficult case.
Creosotewind, Comment for image # 3674613 Sep 16 17:41
This does have a real pretty shape to it. You might want a few different shaped mandrills for inside the cowling when you do get around to working the aluminum. One or two ball bearings for the front, and maybe a short length of brass tubing for the rear. That would allow you to apply just a bit of pressure as you work. But I do know that the pressed aluminum does have a bit of rigidity to it.
lukebozek1, Comment for image # 3674613 Sep 16 08:03
Try the Dremel with some jeweler's rouge.
David Duckett, Comment for image # 3674613 Sep 16 04:17
*thinking...
David Duckett, Image # 3674413 Sep 16 04:02

When this kit was introduced in 1956, Monogram sent a factory assembled and painted model for display in a type of diorama which sat on the counter. The one I saw was painted like the box and was the prettiest model I had ever seen..I don't know why I didn't get it but the memory is just as vivid now as then.
Build Thread, Page :  1   2   3   4   5  [ 6 ] (110 posts, 20 posts per page, 6 pages in total) [ < Prev ]