Cabin roof thickness

May 6, 2016
3
Sirius 21/22 Petersfield
Anybody know off hand how thick the fiberglass in the cabin roof is, so I can purchase the proper SS bolts for a single handed mast raising system I'm installing? Not the pop up portion of the roof, the actual cabin portion. Just trying to save a half hour trip each way to the store after drilling and measuring.
Thanks
Ken
 
Mar 16, 2011
48
Sirius 21 Bronte
Don't know how thick the cabin roof is but I do know there is a liner inside with a space between the deck and the cabin roof. You will probably have to drill a larger hole in the liner to get the bolt against the deck. Going though both will probably cause the liner to distort as the bolt tightens.

Let us know how your mast raising system works out. I built a mast support that fits in the rudder pintles and from there it fairly easy to swing the mast up.