Search found 514 matches

by nomastomas
Sun Jul 07, 2019 10:52 am
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

That's interesting...I've never experienced that. It may be that the dual "exit concaves" I place on the bottom are doing their job and relieving the pressure beneath the tail, eliminating excess lift in this area. Lindsay Lord discuss this phenomenon in his book and which inspired Bob Simmons to in...
by nomastomas
Sat Jul 06, 2019 1:04 am
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

With a deep deck concave and shallow bottom concave the G6 is 1.75" thick at the centerline and 2.25" thick out at 2.5" in from the rail. This configuration gives the TBs an "I-Beam" cross section which serves to eliminate flex (the enemy of speed), while making the deck more rider-friendly and addi...
by nomastomas
Thu Jul 04, 2019 11:33 am
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

Certainly there are differences between heavy and light boards, its just that speed isn't one of them.
by nomastomas
Wed Jul 03, 2019 12:00 am
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

Extremely happy with the performance, even though the choppy, chest-high, late-afternoon session was far from the conditions the G6 is designed for. I was way over-finned with 5.1" rears and 4.7" fronts, and in these conditions with these fins, the G6 was a notch slower than the G5. But interestingl...
by nomastomas
Tue Jul 02, 2019 11:46 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

A few more....
by nomastomas
Tue Jul 02, 2019 11:44 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

Gloss coat was sanded today and I snapped a few photos before heading to the beach for a test run.
by nomastomas
Mon Jul 01, 2019 11:06 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

Heavier total load (board+rider) perhaps, but there are so many other variables to consider/control, that it would be well beyond my ability to test.
by nomastomas
Thu Jun 27, 2019 10:02 am
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

I agree...planing area, volume, bottom & rail contours, tail design, flex and finally, board weight.
by nomastomas
Sun Jun 23, 2019 12:15 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

Last Fall, I built two identical EPS/Epoxy 10-6 gliders using CNC shaping machine. One for a friend, which was glassed light, with a 1/4" basswood stringer, and weighed in at 17lb. The other for me, which was glassed much heavier with a 5-ply gun stringer (only 11' stringer available at the time), a...
by nomastomas
Sat Jun 22, 2019 12:28 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

YES...exactly
by nomastomas
Mon Jun 17, 2019 11:06 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

I use an ultralight 5ft "grom" leash and have never found "board flapping" to be a problem. And, yes, I do enjoy knowing that the hard shell and sharp-edged fins are far from my head/face when the ocean decides to rip the board out of my hands.
by nomastomas
Sun Jun 16, 2019 8:51 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 35
Views: 2514

Re: New summer Groveler

Lighter is better from a "feel" perspective. My 5lb G5 "feels" like riding nothing.
Leash belongs on the right rear corner attached to your ankle :D
by nomastomas
Sat May 18, 2019 6:01 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

Finished the G6 today. Can't wait to get it glassed. Unlike it's predecessors, the bottom is flat, rail-to-rail in the mid-section instead of concave. This was a de-tuning of the bottom to reduce lift. Same convex nose and V tail, with dual exit concaves as the other TBs. This will be a quad fin and...
by nomastomas
Fri May 17, 2019 8:24 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 3449

Re: T-Belly G6

The G6 arrived from Marko today, and I got a chance to hold it in my hands. I'M STOKED!! Photos tomorrow after I scrub it and fine tune it a bit.
by nomastomas
Fri May 17, 2019 7:56 pm
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 88
Views: 12709

Re: TBG5

I totally agree with your arm position/location, but I design my boards to provide a little support for the upper thigh when ridden in this position. The tailblock is about 6" below the natural break at the hip when ridden in the position you describe. It requires a slight shift forward to go from k...
by nomastomas
Fri May 17, 2019 11:58 am
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 88
Views: 12709

Re: TBG5

The load must also be taken into consideration as well as its counterpart buoyancy. And speed, too. Then, of course, there is the impact of form drag produced, not just by the legs but by other body parts, arms, hips, etc, that may be hanging over the outline. I thought all that was obvious? And, wh...
by nomastomas
Thu May 16, 2019 11:44 pm
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 88
Views: 12709

Re: TBG5

So much for trying to keep a complicated subject simple. So, its not the amount of planing surface per se, but more the characteristics of the planing surface, particularly the relationship of the length of the hull to the width of the hull. Naval architect, Lindsay Lord referred to this as the “asp...
by nomastomas
Thu May 16, 2019 11:43 am
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 88
Views: 12709

Re: TBG5

I don't believe that rocker has anything directly to do with lift. If anything, rocker slows a board down when going in a straight line. Your shapes tend to be smaller (less planing area) than mine. You may have come upon a combination of volume and planing area for your weight that, while fast, doe...
by nomastomas
Wed May 15, 2019 8:01 pm
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 88
Views: 12709

Re: TBG5

Not an easy question to answer....about 1" at the centerline. But, then there is a great deal of "V" in the tail, so there is a lot more rocker out at the rail. A board with no rocker is fast, but resists turning. The rider has to weigh the tail to bring the rail out of the water in order to turn. W...
by nomastomas
Tue May 14, 2019 12:21 pm
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 88
Views: 12709

Re: TBG5

Here's the latest G5...it boasts a whopping 40L volume to accommodate a 300# rider. I had to exceed the prescribed length by 2 in in order to achieve the desired volume. Dimensions are 52" length, 23.5" width and 2.5" thick at centerline (thickness at rail is close to 3") Using Aku allows me to shap...