Author Topic: Low Volume Longboard SUP (dreaming one up)  (Read 23393 times)

surfafrica

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Low Volume Longboard SUP (dreaming one up)
« on: September 27, 2016, 12:52:19 PM »
After a summer of small surf, I think it's time to get a longboard SUP to make the most of the conditions.  I just sold my 8'6 RNB which was too big for me (8'6 x 30, 118 L) to a fellow Zoner.  This time, I'd like to go low volume to really get a surfy feel.   I'm thinking 8'10 x 26, 88 L.  I'm 5'7 and 145 lbs.

Here's a pic of the design (I'm working with Kyle from Kronos):

50 years old, 5'7", 150 lbs, intermediate
Infinity RNB: 7'6 x 28, 95 L https://goo.gl/SqlWR4
Kronos LB: 8'10 x 26.5, 84 L https://goo.gl/4iQdps
Kronos Nano: 7'4 x 26, 81 L https://goo.gl/kAM8W6

PDLSFR

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #1 on: September 27, 2016, 01:25:09 PM »
I love my longboard sup its 9'7 x 27" and surf anything from ankle to overhead !
Infinity RNB 8'2
Ron House 9'7
Ron House 10'7
Infinity New Deal 10'
Custom Infinity New Deal 10'
VEC 11'
Focus Bluefin 14'

Night Wing

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #2 on: September 27, 2016, 02:18:50 PM »
I'm thinking 8'10 x 26, 88 L.

How thick in inches will the sup have to be in order for it to have a volume of 88 liters?

Blue Planet Duke: 10'5" x 32" x 4.5" @ 190 Liters (2 Dukes)
Sup Sports Hammer: 8'11" x 31" x 4" @ 140 Liters
SUP Sports One World: 11'1" x 30" x 4.5" @ 173 Liters
CJ Nelson Parallax: 9'3" x 23 1/2" x 3 3/16" @ 78.8 Liters (prone surfing longboard; Thunderbolt Technologies build in Red construction)

surfafrica

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #3 on: September 27, 2016, 02:30:31 PM »
I'm not sure how thick it'll be.  Maybe 3 3/4 or so?  I rarely look at that number because the foam can really be distributed in different ways.  I kind of use the volume in relation to the length/width/shape to get a feel for that spec (if that makes sense).
« Last Edit: September 27, 2016, 02:38:46 PM by surfafrica »
50 years old, 5'7", 150 lbs, intermediate
Infinity RNB: 7'6 x 28, 95 L https://goo.gl/SqlWR4
Kronos LB: 8'10 x 26.5, 84 L https://goo.gl/4iQdps
Kronos Nano: 7'4 x 26, 81 L https://goo.gl/kAM8W6

SlatchJim

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #4 on: September 27, 2016, 02:34:14 PM »
At those dimensions, you'd have a pretty easy time buying a normal longboard off the shelf and taking a paddle with you.  :)

Here's a Weber Feather Fastback (6'6") That looks pretty close to where you're headed.

« Last Edit: September 27, 2016, 02:41:43 PM by SlatchJim »

supuk

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #5 on: September 27, 2016, 02:41:04 PM »
8'10 is still fairly short for a longboard i would go a little longer to get more of the traditional and strighter outline. narrow definitely makes a big difference so stick with that. 

surfafrica

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #6 on: September 27, 2016, 02:46:52 PM »
At those dimensions, you'd have a pretty easy time buying a normal longboard off the shelf and taking a paddle with you.  :)

Funny enough, this summer, I SUPed a session on my buddy's Walden Mega-Magic (9'0 x 24, 95 L)--a big guy longboard.  It was TOUGH. I could stand on it, but barely.  I definitely had the wobbly chicken legs going.  I managed to catch a couple waves, but it sure was a lot of work.  It was way less stable than my small SUP (7'5 x 26, 87 L).

8'10 is still fairly short for a longboard i would go a little longer to get more of the traditional and strighter outline. narrow definitely makes a big difference so stick with that. 

I used to have an 8'10 longboard (a Harbour Merlin). I went with 8'10 based off of Rich Harbour's recommendation for length based on my height/weight.  But ya, for this SUP I was thinking maybe 9'0, but any other longboard I've tried over 9'2 seemed really long for me (I'm short and light).
50 years old, 5'7", 150 lbs, intermediate
Infinity RNB: 7'6 x 28, 95 L https://goo.gl/SqlWR4
Kronos LB: 8'10 x 26.5, 84 L https://goo.gl/4iQdps
Kronos Nano: 7'4 x 26, 81 L https://goo.gl/kAM8W6

supthecreek

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #7 on: September 27, 2016, 02:57:56 PM »
Do you want a noserider or a high performance longboard?

Subber

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #8 on: September 27, 2016, 03:03:19 PM »
88 liters

The old Surftech CJ Nelson Noserider, 10' was 88 liters.

10' C.J. Nelson Surftech Noserider
Nose Width    20"
Mid Width    24.25"
Tail Width    17.13"
Thickness     2.88"
Volume (L)      77.6

Volume probably not distributed right to SUP it & a bit too narrow.
Jimmy Lewis Black & Blue Noserider 10'1"x31"x4.25," 164 liters, 24 lbs, 1 box
Pearson Laird Surftech Longboard 10'6"x23"x29.75"x18"x4.375," 154 liters, 24 lbs, 3 boxes
Takayama Ali'i II Surftech 11'x21.375”x28.5”x17.25”x 4.25,” 162 liters, 26 lbs, 3 boxes

surfafrica

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #9 on: September 27, 2016, 03:04:46 PM »
Do you want a noserider or a high performance longboard?

Something in between (I think). I think I'm leaning towards something with a bit of a performance feel that has some glide and room to move around a bit on the deck. I do like it when boards feel a bit agile, but I won't be hitting the lip or anything....bottom turn, trim, some fun little turns maybe. Oh don't get me wrong, if the conditions line up, I'll try to get up for a cheater five, but I don't have big hopes.

We mainly surf beach breaks so it'll be rare that I get this out on a nice running point.
50 years old, 5'7", 150 lbs, intermediate
Infinity RNB: 7'6 x 28, 95 L https://goo.gl/SqlWR4
Kronos LB: 8'10 x 26.5, 84 L https://goo.gl/4iQdps
Kronos Nano: 7'4 x 26, 81 L https://goo.gl/kAM8W6

surfafrica

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #10 on: September 27, 2016, 03:45:09 PM »
Not sure if this translates well to longboard SUPs, but here is the size scale put together by Rich Harbour.  I used it to pick 8'10 (I'm 145 lbs).

120-130: 8'6
130-140: 8'8
140-150: 8'10
150-160: 9'0
160-165: 9'2
165-170: 9'4
170-180: 9'6
180-190: 9'8
200-210: 10'0
210-220: 10'2
220-230: 10'4
230-250: 10'6
50 years old, 5'7", 150 lbs, intermediate
Infinity RNB: 7'6 x 28, 95 L https://goo.gl/SqlWR4
Kronos LB: 8'10 x 26.5, 84 L https://goo.gl/4iQdps
Kronos Nano: 7'4 x 26, 81 L https://goo.gl/kAM8W6

SlatchJim

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #11 on: September 27, 2016, 03:58:19 PM »
At 250# I was fine on a Weber 10' stylist, which would have much more parallel rails than your CAD rendering.  The board you've drawn and the Feather Fastback I've shown both have more curve in both the nose and tail.  I always wanted to blow that board up to SUP size, and have a pretty close effort in my sup sports Stoke.

In all honesty, I love the board you've got going there.  It looks like a real winner, and something I could scale up for use at my size.  Looks like you're at a ratio of about 1.35L to your kilos in a very surfable concept.

mrbig

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #12 on: September 27, 2016, 05:01:42 PM »
surfafrica, Really interesting stuff! I am 5'8" and weigh 150. In my prone days I had a new issue Dewey Weber that was 8'8" (ESA longboard rules 3' over your head) and it worked fine.

Two summers ago I owned a Laird Firefish 8'6" x 28.5" x 103 liters that behaved suspiciously like a short longboard or a funboard NOT like a fish at all.

If you are looking for glide slightly longer will give it to you. Thin is good. Gives you the ability to surf a longer board with some style..

Good luck 🍀 with your design! It will work given your height and weight. Any tweaking would be minor..
« Last Edit: September 27, 2016, 05:11:49 PM by mrbig »
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surfcowboy

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #13 on: September 27, 2016, 07:10:58 PM »
I watching this closely. I'm about to move my prone sessions from my 8' Wavestorm foamie back to my 9'6" Tudor. I'm your size and I love the extra length for those weird drop the tail turns.

Keep us posted on the width. I'm personally worried that to get the round 50/50 rails I want that 26" will be too tippy. I can't really see from the drawing. Are you doing a flat bottom (HPLB) or more hull-ish like a nose rider?

Love that you are doing this.

capobeachboy

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Re: Low Volume Longboard SUP (dreaming one up)
« Reply #14 on: September 27, 2016, 08:18:57 PM »
I've been riding these two for the last couple weeks. Pretty nice production shapes and light too.

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