You have it figured out FM! My plan is to stuff something between the rack and the seat. I also plan to bungee a strap or two to the siderails and have thought of some standoffs for the side rails as well. Have to wait until I get back to the bike. The rack will not be carring much weight but more than a sandwhich
Thanks for the input.
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te author=fartymarty link=topic=20484.msg259083#msg259083 date=1457031006]
Nice woodwork!
Yes the OEM plastic rack is not very good but it may suit your purpose if I understand your design. (I'm not a fan of the original rack but it may be overly hated as much as the large muffler, besides I'm trying to save you a little work and money here.
) Obviously with only two screws plus the sculpted cut out and slot plugs to resist lateral loads you might want to do more up front. If I understand your design the front of your rack extends over the rear of your seat? And you'll have something under it so it is resting on the seat? If it is just cantilevered above the seat then I do believe the OEM rack will eventually fail when loaded (not at first but eventually depending on how much you use it.). If the front of your rack is going to be resting on the pillion portion of your seat then maybe some downward extensions might be a good idea in that area to resist side loads and excess lateral forces being levered back to the OEM rack. These could just be shaped blocks of wood that project down from the underside of your rack and rest between the seat and the support arms/rails.....that is if I understand how your rack is supposed to work. Another item of concern regarding the strength of the under supporting OEM rack is the size and wind exposure of your load. If the load is bungied to the bike instead of the rack, then no problem. However if a large bulky wind exposed bundle is bungied only to your rack then it may stress the OEM rack in the opposite direction than it would be when stopped, this repeated back and forth stress would no doubt accelerate failure potential (cracking or bolt pull through) at the bolt holes of the underlying OEM rack. I'm certainly no engineer, perhaps Brian or any other engineer could chime in here.
("Easy boys" applies to all the above mentioning of
rack and seat and especially to "the front of your rack extends over the rear of your seat?" and if needed
to "Nice woodwork!")
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