Search found 522 matches

by nomastomas
Sat May 18, 2019 6:01 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

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: 9050

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: 99
Views: 25282

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: 99
Views: 25282

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: 99
Views: 25282

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: 99
Views: 25282

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: 99
Views: 25282

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: 99
Views: 25282

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...
by nomastomas
Tue May 14, 2019 11:55 am
Forum: Paipo Board Design & Building
Topic: paipo single fin fcs 3d, choppy dais
Replies: 5
Views: 2125

Re: paipo single fin fcs 3d, choppy dais

Belly Rider is very familiar with multi-foiled fins. Maybe he will give you some feedback.
by nomastomas
Mon May 13, 2019 10:09 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 36
Views: 8661

Re: New summer Groveler

I like the bottom concave...very Lindsay Lorde/Bob Simmons. Nice transition from down rail in back to up rail in nose. Not easy to do with such a short distance. I'm interested to hear how the grooves in the tail affect control, assuming that's their purpose.
by nomastomas
Mon May 06, 2019 12:11 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

I can't swap out hull form boards in the middle of a wave! If the hull is the appropriate length and volume for the riders height and body weight, there is no need. One simply lowers the leg(s) if added drag is desired, or raises them for maximum planing efficiency, all the while maintaining a posi...
by nomastomas
Mon May 06, 2019 11:39 am
Forum: Swim Fins, Skegs & Other Paipo Gear
Topic: Question about skegs
Replies: 9
Views: 3141

Re: Question about skegs

"on a given shape (let's pretend it is a basic bodyboard shape), would adding skegs allow the board to go faster by any way ?" There's no short answer to that question. There are just so many variables to consider. Wave conditions, bottom contours, board volume, not to mention the obvious fin foil a...
by nomastomas
Sun May 05, 2019 7:37 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

I agree that extended legs can and do extend the "wetted surface". But that "extended surface" creates a lot more drag than the form drag of the hull. Its that extra drag of the legs and swim fins that can be used to control direction, much like dragging an oar in a canoe. Taken to the extreme we ha...
by nomastomas
Sun May 05, 2019 6:01 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

Prone boards turn off the rear corner. My guess is that turning a prone board is more about rail shape,outline shape and presence or absence of fins than length.
by nomastomas
Sun May 05, 2019 5:21 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

Asier, Have you read all of the threads I've posted on this forum? You'll find the answer there...
by nomastomas
Sat May 04, 2019 1:22 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

“I find it is the opposite of surfboards. So, the bigger and heavier the wave the smaller the board you can ride. Since those waves give so much more speed you just increase your control by using a smaller board which is super helpful when making crucial late drops or bottom turns on slabby waves. F...
by nomastomas
Fri May 03, 2019 8:07 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 36
Views: 8661

Re: New summer Groveler

Looking forward to seeing the finished shape!
by nomastomas
Fri May 03, 2019 10:03 am
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

More bottom curve, yes...more outline curve, no.
by nomastomas
Thu May 02, 2019 3:16 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

All things being equal, e.g. rocker, volume, rail shape, bottom contours, fin set up, etc, straighter rail line = more rail in wave face = more drag = less speed Drawing shows a comparison of a G5 with a Mach 7-7. The G5 is 49" in length and the Mach 7-7 is 42". The yaw angle for each relative to th...
by nomastomas
Wed May 01, 2019 1:39 pm
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 9050

Re: T-Belly G6

Good questions...The outline of TB needs to be considered relative to all of its other design features, which includes the use of fins. The outline shape of the finned TBs speaks to the difference between finned and finless prone-board shapes. The TB designs are driven by the use of fins for primary...