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JAE 91 kit


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#16 gil sonsino

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Posted 07 May 2018 - 03:02 PM

I like to remove part of the foam in the boom section in the sponsons and replace it with a piece of hard balsa wood...this has fixed some issues.Gill





#17 john urbowicz

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Posted 08 May 2018 - 06:20 PM

I like to remove part of the foam in the boom section in the sponsons and replace it with a piece of hard balsa wood...this has fixed some issues.Gill

hi gil.   what issues did you have?   





#18 dr gary turner

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Posted 09 May 2018 - 05:46 AM

Consider using the sponsons you have built as a template and build a set with divinycil.

We glue the sponson tubes directly into the divinycil

You can get the divinycil by calling Mark Bullard
I have a 4x8 sheet of it at his shop.

Also use STAND OFFS to mount the turn fin
Again glued into the foam. The can be gotten from McMaster Carr

Chuck them up and cut grooves around them with a file. Will never pull out

#19 gil sonsino

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Posted 09 May 2018 - 02:03 PM

john with two of the gas Jaes the aluminium booms don't glued well and rotated so with the solid section with wood  I haven't had any more issues.....I have to agree that using divinycell is another story with zero issues. Gill



#20 dr gary turner

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Posted 10 May 2018 - 04:51 PM

At least 20+ boats including at least 8 or more twins built using divinycil sponsons with no tubes pulling whether aluminum fiber glass or carbon fiber.

#21 PaulHail

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Posted 11 May 2018 - 02:56 PM

Thanks for the input.  I plan to build at least one set of sponsons with the factory foam.  Not sure what I'll do about re-inforcing the boom tube mounts.  Progress is still slow.

 

I did get an engine, and just finished making two pairs of mounts for them.  Not much more effort to make a backup set.

 

 



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