Forums > Stand Up Paddle General

Understanding Sandwich Construction

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Created by JB > 9 months ago, 1 May 2016
JB
NSW, 2232 posts
Site Sponsor
1 May 2016 7:16AM
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Here is a great video from Jimmy Lewis which will help anyone who doesn't understand what they are paying for in a premium board. "Sandwich Construction"!

Not all wood boards are the same, and like wise you do get what you pay for.



Here you can see the GTW construction on a Nalu. This board does not use Bamboo, but Australian Pine, but it is laminated on both sides as well as re-enforced. Nearly all cheap "wood look" boards out there are not.




Be aware of what you are getting when you purchase a board. Cheap sometimes isn't a bargain, possibly it just has less materials in it?

Ride safe,

JB

JB
NSW, 2232 posts
Site Sponsor
1 May 2016 7:23AM
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And Naish' LE contstruction. PVC sandwich bottom, Honeycomb Sandwich Deck. plus a lot more laminates.


AndyR
QLD, 1344 posts
1 May 2016 8:36AM
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That is a really great video. Everyone starting out needs to see this.

kikaha
QLD, 72 posts
1 May 2016 8:52AM
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Great clip explains the technology well.

webbo100
NSW, 63 posts
1 May 2016 9:35AM
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Hy JB Le construction not that strong $3,000 10 LE Nalu is
6 months old lovely board, but two foot surf at high tide paddling out and what the ???






magillamelb
VIC, 627 posts
1 May 2016 10:54AM
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Jimmy is right to a point.

What he has failed to demonstrate is the EPS core with fibreglass/carbon either side of it is still a sandwich type construction. Not as good as PVC, but still a sandwich structure.

Overall, the video is misleading.

husq2100
QLD, 2031 posts
1 May 2016 11:20AM
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JB, can you find out what species of pine the "australian pine" is

cheers
Serg

AndyR
QLD, 1344 posts
1 May 2016 11:43AM
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Select to expand quote
magillamelb said...
Jimmy is right to a point.

What he has failed to demonstrate is the EPS core with fibreglass/carbon either side of it is still a sandwich type construction. Not as good as PVC, but still a sandwich structure.

Overall, the video is misleading.


How so?
I thought he was talking about what his boards are made with

ChuckSteak
QLD, 83 posts
1 May 2016 12:11PM
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Oh snap...!!!

magillamelb
VIC, 627 posts
1 May 2016 2:46PM
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Select to expand quote
AndyR said..

magillamelb said...
Jimmy is right to a point.

What he has failed to demonstrate is the EPS core with fibreglass/carbon either side of it is still a sandwich type construction. Not as good as PVC, but still a sandwich structure.

Overall, the video is misleading.



How so?
I thought he was talking about what his boards are made with


Fibre (glass, carbon or whatever) either side of EPS is a sandwich construction. Make no mistake, the construction of his boards are excellent, but not to comment about fibre either side of EPS is a bit misleading at best.

micksmith
VIC, 1697 posts
1 May 2016 4:22PM
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i see him demonstrating that a true sandwich construction is glass either side of the p v c, that is the sandwich, not Just glass either side of the foam.

colas
5169 posts
1 May 2016 3:33PM
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Select to expand quote
magillamelb said..
Fibre (glass, carbon or whatever) either side of EPS is a sandwich construction. Make no mistake, the construction of his boards are excellent, but not to comment about fibre either side of EPS is a bit misleading at best.


Yes, a great video (and great boards & shapes, no question there) spoiled by dubious marketing tactics. I re-post what I said elsewhere:

Really nice video, great demo. But spoiled by false marketing claims:
- There are major brands that have provided for years bamboo layers sandwiched between 2 glass layers. He claims in the videos that there are none.
- PVC sandwiched by glass is not the strongest construction on the market as claimed: Just sandwich the PVC by carbon fibers to get a stronger one. And some brands do it for cheaper than JL glass boards. And some add kevlar...

I guess this is the US culture of every shop claiming "we make the best product in the world", since they have no laws punishing false (or unprovable) ad claims. But it is too bad, Jimmy stellar reputation do not need this cheap tricks. He should have shown other important construction details (quality of the blanks, paint, varnishes) than just using false claims.

PS: I left a comment on the facebook page of the video... it was deleted in less than 5 minutes... it shows how confident they are in their message...

warwickl
NSW, 2284 posts
1 May 2016 9:15PM
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I've had 2 JL boards - excellent construction however in the end design did not suit.
I've had 3 Naish boards and design suited me however all 3 had structural faults as did for 2 friends Naish boards.
Now have a J L pro and 2 custom boards plus kept my Naish Nalu in cotton wool.

JB
NSW, 2232 posts
Site Sponsor
2 May 2016 6:48AM
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webbo100 - Bummed to see you had an issue. The reality of the Nalu 10 LE is it is a super high performance board (personally my favorite), and the key thing that makes this board so good it the super low rail profile and flex. If you where to use another construction you couldn't get the rails that sweet and hence the board would be different. It's like owning a pros surfboard, the will ride like nothing else, but need to be looked after. It is also important to understand that a 10' board with just 1m of static water loaded onto it is carrying approx. 200+kgs of load. Start this water moving (like ocean movement) and there's is an enormous amount of load on the board. The tricky thing with SUP is because the boards are so big, even the smallest wave can be damaging if the board is put in a compromising position. If you watch carefully the pros on the SUWT, you'll notice they always care for their boards by flicking them over the waves and talking the hit themselves to lessen the load on their boards.

Board construction is funny in ways, and I always like to say it's a sliding scale. You generally can't have everything - Ultra durability, light weight and high performance. You must give a little of something or everything to come up with the mix that fits your designs primary expectation. Like with surfing, the best performing boards available are likely to be less durable then some brands that have chosen durability over performance, however the ride of this such board is nothing on the ride of a high performance board.

Ride safe,

JB



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