Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post

8e3k0 · 12-10-2009, 08:50 AM

I wonder why some competitors with the same RV weights/lenghts are using 12 inch frames instead of 10 inch. I think some of the largest Montanas are running borderline for weight versus modulus of frame. Now if there was a long support beam directly on top of the three shackle assemblies on each side and attached to the frame for added strength then the 10 inch may be suffice, but???

12-10-2009, 08:50 AM	#17
8e3k0 Montana Master Join Date: Apr 2009 Location: Ardrossan Posts: 729 M.O.C. #9261	I wonder why some competitors with the same RV weights/lenghts are using 12 inch frames instead of 10 inch. I think some of the largest Montanas are running borderline for weight versus modulus of frame. Now if there was a long support beam directly on top of the three shackle assemblies on each side and attached to the frame for added strength then the 10 inch may be suffice, but???