Brooksmj1948 Posted March 12, 2016 Share Posted March 12, 2016 Do any members know what the approximate overhang of the MTH big boy will be beyond the outside rail on curves. I am building a wall layout and I need to clear a beam. The curve will be a 138" diameter using gargraves flex track, so even a shorter diameter spec would still be usefull. Thanks New member Mike Quote Link to comment Share on other sites More sharing options...
Rayman4449 Posted March 12, 2016 Share Posted March 12, 2016 Hi Mike, welcome. Im not sure i have any 10ft curves left to take measurements on. Will reply if I do get some info to share. Quote Link to comment Share on other sites More sharing options...
Brooksmj1948 Posted March 12, 2016 Author Share Posted March 12, 2016 Thanks very much. I am a new mth dealer and Regina my sales rep gave me forum links to experienced g gaugers including yourself. I have the big boy on order but they dont have one in to test for overhang yet. My existing layout is a o gauge map of the usa, but the g gauge will be a loop around my 25×40 attic with a 17 foot ceiling. My plan right now leaves 4 inch clearence to the wall and the interfering ceiling post. I am picking up the track today at Gargraves near lake ontario. I want to construct the loop before the big boy arrives so any estimations of an overhang is very much appreciated. You have a great layout, and i appreciate what it took to create it. My layout is at www.crocodiletrainstore.com By the way, where are you located. I eould love to visit your layout someday. Best Regards and Thanks Mike Brooks Quote Link to comment Share on other sites More sharing options...
blid Posted March 12, 2016 Share Posted March 12, 2016 Here is a short video of my MTH Big Boy. It is from the first run 2006. The track is LGB R3, about 94†diameter. It might give you an idea. blid Quote Link to comment Share on other sites More sharing options...
Brooksmj1948 Posted March 12, 2016 Author Share Posted March 12, 2016 Thanks very much for the quick reply and the video. I am on my smart phone and it wont play it but i will try it on my computer. I just wanted to give a quick thank you as soon as i saw your reply. I will check it out when i get home. Thanks Mike Quote Link to comment Share on other sites More sharing options...
enginear joe Posted March 13, 2016 Share Posted March 13, 2016 I don't have the Bigboy yet to answer this. (June delivery??) I do have all the radius curves that Aristo sold. Some of the smallest I have, I don't use but are still laying around. I do have the MTH Challengers. I'm not sure if a measurement of them would help? Quote Link to comment Share on other sites More sharing options...
blid Posted March 13, 2016 Share Posted March 13, 2016 To me it looks like the inside of the boiler is above the center of the rails. According to the catalogues the engine is 4 3/8†wide. If you have 4†from the edge of the ties(?) and the ceiling posts are vertical, you should be alright with your 138†diameter. Quote Link to comment Share on other sites More sharing options...
Jerry B44 Posted March 14, 2016 Share Posted March 14, 2016 I ran mine yesterday, I have roughly 16-20' diameter curves. I'd figure the center of the boiler will be out equal to the edge of the locomotive, maybe larger with smaller diameter. Quote Link to comment Share on other sites More sharing options...
Brooksmj1948 Posted March 14, 2016 Author Share Posted March 14, 2016 Hi Jerry, I started replying earlier today and got "sidetracked" with a music store customer and a train guy from Hammondsport, NY. Your information is very helpful, since my 11.5 foot curve diameter will certainly hang out as much, and with about a 4.5 inch engine width, I need to make sure I can clear the posts. I am going back to my ANY RAIL drawing and putting in the posts and adjusting as needed to try to get a 6 inch separation to be safe. Best Regards and Thanks, Mike Quote Link to comment Share on other sites More sharing options...
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