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RobbmanNovember 9th, 2007, 05:58 PMThe AAR has rasied axle limits over the years... without getting overly technical (if you really want that, read my post here :Train weight on bridges (http://www.trainorders.com/discussion/read.php?2,1465530))From Jan 1st 1994 to current, 36" wheels would be used on any car thats 286K GRLFrom Jan 1st 1963, to Dec 31st 1993, 263K was the max GRL for 4 36" wheels...Before Dec 31st 1962, 251K was the max...Note that 36" wheels basically dictate the use of 6.5 x 12" axles... but I digressGRL is Gross Rail Load... like B&O says... add up the light weight and load limit and use that... just make note of your era.
I believe 33" is what you are looking forhttp://www.trainboard.com/grapevine/showthread.php?t=107374
Really? The racks and flats take 36" wheels?
I think the protoypes do have 28", but from what I gather about microtrains they are kind of toyish.I'll ask this now, what is the prototype wheelsize for 85' fluch deck TOFC flats?
Is there a place on tri-level enclosed racks that indicates wheel diameter?
Quote from: NandW on March 16, 2010, 11:15:07 PMIs there a place on tri-level enclosed racks that indicates wheel diameter? Yes, but that only helps if the model is actually that prototype.Jason
Yes, but proto information is the info that matters here. The next question is which proto is the model.My understanding (proto) is:Bi-level Enclosed - 33"Tri-level Enclosed - some 28" some 33" - how do we sort this out?I assume open bi-level racks are 33"What about open tri-level racks? - 33"?As for models, if we ignore the Concor model, then we only have two enclosed prototypes to deal with (RC and MT).For the RC bi-enclosed rack, it's safe to say it's proto rides 33" wheels (right?)For the MT tri-enclosed rack, what did its proto ride on?Mark