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#31
10-24-2012, 07:19 AM
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Not sure of the techno term . But the three, pieces that make the bracket stiffer,,, perhaps, stiffiners..did you laminate three layers of 1808 on each side.... By the way what denisity was the foam you used..
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#32
10-25-2012, 09:58 AM
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You must be talking about the stringers? They are 5/8" or 3/4" corecell I cant remember now....they are glassed and then tabbed in with 1808. They are not laminated into the tub as you have eluded to. If you want to do it that way I would do 2 layers.
strick
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#34
10-27-2012, 12:52 AM
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Laying up bracket mount for engine. 4 layers of 1/2 20lb density foam. layer of 17/08 and 2 oz mat on each sandwiched layer . drilled bleader holes for the resin to soak through and pull vacuum to ful vac of -30 then backed of to -20
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#39
10-28-2012, 09:06 AM
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Pretty cool thread. I can't speak for Strick, but I have an all aluminum bracket I was considering mounting. It appears to be 130 lb for 30" setback. Maybe 110 lb for a 24" setback if/when I cut it down. It does lack a center stringer which I would need to add. I seem to recall reported similar fiberglass bracket weights of 120-160lb.
I opted not to use the 30" bracket yet- it needs a brace/stringer, and I only need 23" of setback, so I didn't want to move the weight that far aft as I was worried about handling. But a 24" bracket is a little tight. I might use that aluminum bracket as a plug for a 24" bracket mold. I really like the idea of a vacuum bagged bracket. I am wrestling with how to do that and don't have a firm plan yet, shy of a collapsible inner plug- which seems really ambitious. I don't want to hijack your construction thread, but if you are interested a design/theory thread for brackets is here: http://www.classicseacraft.com/commu...t=23274&page=4 Last edited by FishStretcher; 10-28-2012 at 09:19 AM.
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#40
10-28-2012, 10:50 AM
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Quote:
strick
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Linear Mode
