| View previous topic :: View next topic |
| Author |
Message |
U2U2U2
Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado
|
 Posted: Sun Jan 15, 2017 11:03 am Post subject: |
 |
|
| thombiz wrote: | Thinking about 2 lb density EPS brought up some questions. First, why not use a big surfboard blank and glass it like a surfboard instead of using EPS. Foam surfboard blanks range from about 1.8 lbs density to about 2.8 lbs density and they come somewhat pre-shaped. I can see shipping being expensive, but so is shipping EPS. A surfboard blank would be much easier and cheaper to glass using polyester or vinylester resins. The structural properties of the surfboard blank foam would be substantially higher than EPS.
I used 2 lb EPS foam on one board and have regretted it ever since. You just can't offset that kind of weight using every "weight reduction trick in the book". |
The answer to someone using 2lb EPS,will vary. Your discussion makes sense.
In my case, the 2lb block was 10miles away, I purchased 2 blanks 100 + liter, for what one board blank would have cost, plus another smaller one. They were cut off a huge block on a CNC machine with outline , nose and tail rocker, they we input into the computer based on my dimensions, the machine did the rest. This avoided any shipping cost. Since I had sussed that 2lb was a viable option, this became the choice.
_________________
K4 fins
4Boards....May the fours be with you
http://www.k4fins.com/fins.html
http://4boards.co.uk/ |
|
| Back to top |
|
 |
U2U2U2
Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado
|
| Posted: Sun Jan 15, 2017 11:10 am Post subject: |
|
|
Very slow progress, personal complications.
Part of a very unscientific test of 1.5 vs 2lb EPS
Dropping a bomb onto each to evaluate the impact difference.
_________________
K4 fins
4Boards....May the fours be with you
http://www.k4fins.com/fins.html
http://4boards.co.uk/ |
|
| Back to top |
|
|
U2U2U2
Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado
|
| Posted: Sun Jan 15, 2017 11:16 am Post subject: |
|
|
Someone mentioned Cobra built boards,
Each company has their own properitary materials, amount , placement at the factory. From what I have read, these are not disclosed to others using the factory.
For a company to state they use carbon, is a easy statement to make, where and how much is not easily found. A few companies disclose a diagram of materials and placement. Looking for thickness of say bamboo or Australian pine is harder. I've not looked for these for some time, so I would welcome to see them.
Point: saying general things about Cobra built boards, is that ..generally speaking
_________________
K4 fins
4Boards....May the fours be with you
http://www.k4fins.com/fins.html
http://4boards.co.uk/ |
|
| Back to top |
|
|
U2U2U2
Joined: 06 Jul 2001
Posts: 5467
Location: Shipsterns Bluff, Tasmania. Colorado
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
|
|
|
Search
Profile
Log in to check your private messages
Register
