Re: Stus-List Help understanding composites

2014-03-01 Thread Jim Watts
Depends on the water temperature and the state of undress of the participants. Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 1 March 2014 20:32, Rich Knowles wrote: > All I know is; people on the inside, water on the outside. Works for me. > > Rich > > On Mar 1, 2014, at 22:52, Denni

Re: Stus-List Help understanding composites

2014-03-01 Thread Rich Knowles
All I know is; people on the inside, water on the outside. Works for me. Rich > On Mar 1, 2014, at 22:52, Dennis Cheuvront wrote: > > John, > > For more info, go here: > > Lots of info on resin infusion, fiberglass fabric, roving, mat, an

Re: Stus-List Help understanding composites

2014-03-01 Thread Dennis Cheuvront
John, For more info, go here: Lots of info on resin infusion, fiberglass fabric, roving, mat, and lots of stuff you don't want to know about. Articles and videos. Dennis C. Touche' 35-1 #83 Mandeville, LA On Sat, Mar 1, 2014 at 7:16 PM, j..

Re: Stus-List Help understanding composites

2014-03-01 Thread sam . c . salter
ot;H" beam keeps the outer flanges apart - where most of the stiffness resides. sam :-) C&C 26 Liquorice  Ghost Lake Alberta    Original Message   From: j...@svpaws.net Sent: Saturday, March 1, 2014 6:24 PM To: cnc-list@cnc-list.com Reply To: cnc-list@cnc-list.com Subject: Re: Stus-List

Re: Stus-List Help understanding composites

2014-03-01 Thread j...@svpaws.net
mproved the formula somehow and re-enforce stress areas >>> more so it is less brittle than before. They put carbon in sails now. >>> >>> >>> Chuck >>> Resolute >>> 1990 C&C 34R >>> Atlantic City, NJ >>> From: j...@svpaws

Re: Stus-List Help understanding composites

2014-03-01 Thread Graham Collins
90 C&C 34R Atlantic City, NJ *From: *j...@svpaws.net <mailto:j...@svpaws.net> *To: *cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> *Sent: *Saturday, March 1, 2014 2:27:15 PM *Subject: *Stus-List Help understand

Re: Stus-List Help understanding composites

2014-03-01 Thread Ken Heaton
d the formula somehow and re-enforce stress areas > more so it is less brittle than before. They put carbon in sails now. > > > Chuck > Resolute > 1990 C&C 34R > Atlantic City, NJ > ------ > *From: *j...@svpaws.net > *To: *cnc-list@c

Re: Stus-List Help understanding composites

2014-03-01 Thread j...@svpaws.net
l, but the best > results are achieved with proper alignment of the fibers corresponding to > the direction of highest stress > Just a guess > -Original Message- > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of > j...@svpaws.net > Sent: March 1, 20

Re: Stus-List Help understanding composites

2014-03-01 Thread j...@svpaws.net
put carbon in sails now. > > > Chuck > Resolute > 1990 C&C 34R > Atlantic City, NJ > From: j...@svpaws.net > To: cnc-list@cnc-list.com > Sent: Saturday, March 1, 2014 2:27:15 PM > Subject: Stus-List Help understanding composites > > I'm but an accountan

Re: Stus-List Help understanding composites

2014-03-01 Thread j...@svpaws.net
Thanks - was confusing the terms mat and roving. Wish the book was still in print - will need to find a copy. John Sent from my iPad > On Mar 1, 2014, at 2:53 PM, Jim Watts wrote: > > Glass mat and chopped strand are the same thing...CSM. The 34+ was probably a > layup of CSM, woven roving

Re: Stus-List Help understanding composites

2014-03-01 Thread Ken Heaton
Oops, make that 1.5 oz where ever I said 1 oz. I think the changes in materials over the years makes less of a difference that what Graham said, "From hand layup, to vacuum bagging, to resin infusion and/or pre-preg." Reducing the amount of resin using these techniques results in a hull that is j

Re: Stus-List Help understanding composites

2014-03-01 Thread Ken Heaton
The schedule for the 1990 37+ Below the waterline the layup was one layer 1 oz. chop, one layer 1 oz. mat and one layer of C77K/200 Kevlar Fabmat (a blend of fibreglass and kevlar 49) outside the balsa and one layer of C72K/100 Kevlar Fabmat inside. This Fabmat is much heavier than the 1 oz. chop

Re: Stus-List Help understanding composites

2014-03-01 Thread Graham Collins
more so it is less brittle than before. They put carbon in sails now. Chuck Resolute 1990 C&C 34R Atlantic City, NJ *From: *j...@svpaws.net *To: *cnc-list@cnc-list.com *Sent: *Saturday, March 1, 2014 2:27:15 PM *S

Re: Stus-List Help understanding composites

2014-03-01 Thread dwight
1, 2014 3:27 PM To: cnc-list@cnc-list.com Subject: Stus-List Help understanding composites I'm but an accountant not an engineer. Help me understand this stuff.. So if I use a 1990 34+ as the baseline, the hull was a composite of vinyl resin, presumably glass matt and chopped strand, balsa

Re: Stus-List Help understanding composites

2014-03-01 Thread Chuck S
s.net To: cnc-list@cnc-list.com Sent: Saturday, March 1, 2014 2:27:15 PM Subject: Stus-List Help understanding composites I'm but an accountant not an engineer. Help me understand this stuff.. So if I use a 1990 34+ as the baseline, the hull was a composite of vinyl resin, presumabl

Re: Stus-List Help understanding composites

2014-03-01 Thread Jim Watts
Glass mat and chopped strand are the same thing...CSM. The 34+ was probably a layup of CSM, woven roving, and kevlar in a vinylester matrix with balsa core. E glass is the same basis as woven roving, just a different weave. Cloth is a lighter version of roving. The woven roving in the 34+ and the 1

Stus-List Help understanding composites

2014-03-01 Thread j...@svpaws.net
I'm but an accountant not an engineer. Help me understand this stuff.. So if I use a 1990 34+ as the baseline, the hull was a composite of vinyl resin, presumably glass matt and chopped strand, balsa core and Kevlar. Now fast forward to 2000 and my early 121. The glass Matt has been replaced by