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  #1  
Old 06-03-2011, 05:00 PM
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egstrong egstrong is offline
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Default cutting out landing gear bulkheads

I'm getting started on cutting the landing gead bulkheads and I think I can save some foam by cutting the the upper forward bulkhead and aft bulkhead out in three separate pieces (the two "ears" and the cross piece) and epoxying them together. Will this weaken the structure or is everyone doing this already?
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Old 06-03-2011, 05:12 PM
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Default Re: cutting out landing gear bulkheads

This is for a Cozy?
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Old 06-03-2011, 08:33 PM
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Default Re: cutting out landing gear bulkheads

Quote:
Originally Posted by egstrong View Post
I'm getting started on cutting the landing gead bulkheads and I think I can save some foam by cutting the the upper forward bulkhead and aft bulkhead out in three separate pieces (the two "ears" and the cross piece) and epoxying them together. Will this weaken the structure or is everyone doing this already?
sure,that will work fine, we cut and glue thin foam often, just keep it flat
and smooth. i hot glue the corners and micro the part all at once and lay up the glass on on side then the next day flip and mico/glass the other.
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Old 06-03-2011, 08:49 PM
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Default Re: cutting out landing gear bulkheads

Pieces of foam that are micro'd or 5-minute'd together make just as good a core as a continuous piece. But did you see the suggestion in the plans for the most efficient way to cut the foam. Yeah, I didn't follow it either.
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Old 08-21-2011, 03:49 PM
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Default Re: cutting out landing gear bulkheads

I've found that some of the diagrams in the plans don't work so well because I've somehow got differnt sizes of foam than what the plans are using.
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Old 08-21-2011, 09:09 PM
Kraig Kraig is offline
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Default Re: cutting out landing gear bulkheads

Are you using the "M" drawings. I would not cut out pieces just by the dimensions, too much error can happen especially with the angles of things.

I bought the full size "M" drawings from spruce and used the smaller sheets as templates. This way i could use the full size sheets as a unaltered reference. Plus I have taped together a few to give me a complete side view of my fuselage from the firewall to the front of my extended nose! Great for when you are finding reference points when doing chapter 13, (also known as the never ending chapter!)

Hope this helps,

Kraig
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Old 08-22-2011, 12:31 AM
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Default Re: cutting out landing gear bulkheads

i just meant the cutting diagrams in the plans didn't always match the dimensions of the foam that was shipped.
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Old 08-22-2011, 08:29 AM
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Default Re: cutting out landing gear bulkheads

Sometimes you have to glue a couple pieces together with micro.
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Old 08-22-2011, 09:44 AM
Kraig Kraig is offline
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Default Re: cutting out landing gear bulkheads

5-min. epoxy is your best friend for this. It really does not matter how many pieces you put together, just make sure they are flat.

On someones site I saw where you would tape the pieces together with duct tape on one side, bend the piece and put on the 5-min., and then flatten it onto the table, duct tape down, clean off what oozes out, weight it down flat and let it dry. Nice tight joints this way. You can do this before you actually cut out the pieces, so you don't have to be right on yet w/ the measurements. I always cut them about a smidge over, then sanded them to the perfect line after, then did the layups.

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