Search found 301 matches

by CHRISPI
Mon Nov 18, 2019 2:56 pm
Forum: Paipo Board Design & Building
Topic: Soft edge
Replies: 4
Views: 418

Re: Soft edge

The trouble with performance experiments and trying different approaches is it creates more questions than answers, and the old question is how you measure it. I feel wave gardens might be the answer, it something you can budget for and get guaranteed constant size waves so you can set a base line f...
by CHRISPI
Mon Nov 18, 2019 10:46 am
Forum: Paipo Board Design & Building
Topic: Soft edge
Replies: 4
Views: 418

Soft edge

IMG_20191105_125753.jpg I have been experimenting with vinyl wrap on my latest boards , and found with layering clear vinyl makes a perfect trailing edge profile finishing with a razor thin soft edge ,stiffness can be added or subtracted with more or less layers .I have read a lot about vortex gene...
by CHRISPI
Mon Oct 28, 2019 5:55 am
Forum: Paipo Board Design & Building
Topic: MK3
Replies: 7
Views: 1502

Re: MK3

Wow very nice .How you going to protect that car from the night time dew point
by CHRISPI
Mon Oct 28, 2019 5:36 am
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 99
Views: 18747

Re: TBG5

Arm leashes specially elbow make boards with pointy bits come back to fast and hard.
by CHRISPI
Fri Oct 25, 2019 7:18 am
Forum: Paipo Board Design & Building
Topic: MK3
Replies: 7
Views: 1502

Re: MK3

Learning how to glue and laminate in this cold wet UK weather is an eye opener ,I had huge double garage work shop in South Africa I thought could not live without it but heating it hear would not make sense sheds work fine but you can’t collect junk, a tinkerer is only as good as his pile of junk
by CHRISPI
Fri Oct 25, 2019 6:56 am
Forum: Paipo Board Design & Building
Topic: MK3
Replies: 7
Views: 1502

Re: MK3

Before I bin my lamination off cuts I always twist and break them to understand how they perform.
by CHRISPI
Thu Oct 24, 2019 3:45 pm
Forum: Paipo Board Design & Building
Topic: MK3
Replies: 7
Views: 1502

Re: MK3

The only thing to stay the same on all my boards are my unique stainless steel leash plugs
by CHRISPI
Thu Oct 24, 2019 3:26 pm
Forum: Paipo Board Design & Building
Topic: MK3
Replies: 7
Views: 1502

Re: MK3

Yes stick, glue, weld stuff together and then rip it apart, there is amazing new adhesives and materials out there,example cars are glued together .
by CHRISPI
Mon Oct 21, 2019 9:12 am
Forum: Paipo Board Design & Building
Topic: MK3
Replies: 7
Views: 1502

MK3

I still feel foils will give better lift to drag numbers than parallel to water flow rails .This is also an experiment with vinyl wrap, I don’t know how long it will stay on. Its 10mm Airex foam core with 20 mm top and bottom polyethylene foam plenty volume, the vinyl wrap is epoxy to the polyethyle...
by CHRISPI
Mon Oct 21, 2019 8:38 am
Forum: Paipo Board Design & Building
Topic: TBG5
Replies: 99
Views: 18747

Re: TBG5

Very nice boards. Keel V bottom is the way to go.
by CHRISPI
Thu Oct 10, 2019 1:49 pm
Forum: Paipo Board Design & Building
Topic: Hot Curl Prone Board
Replies: 15
Views: 1506

Re: Hot Curl Prone Board

Thank the lord a post .This board ticks all the boxes on my list, are you going that deep on the v very rad
by CHRISPI
Mon Sep 02, 2019 1:10 pm
Forum: Paipo Board Design & Building
Topic: Immigrant board Mk2
Replies: 5
Views: 1795

Re: Immigrant board Mk2

I have been thinking about a box fitting to run stand-up board fins horizontally on the rails .lots of interesting profiles to test. Not certain they can handle full horizontal side load.
by CHRISPI
Thu Aug 29, 2019 4:00 pm
Forum: Paipo Board Design & Building
Topic: Immigrant board Mk2
Replies: 5
Views: 1795

Re: Immigrant board Mk2

The lift to drag ratio of a winglet is better than a sliding rail, so the same lift with less drag. So at the same speed a wing will have less parasitic drag compared to a sliding rail were the low pressure wake is mostly unattached
by CHRISPI
Sun Jul 07, 2019 6:04 am
Forum: Paipo Board Design & Building
Topic: T-Belly G6
Replies: 42
Views: 6365

Re: T-Belly G6

The rail and trailing edge are looking good, I found a wide square trailing edge generally very fast, but dropping down a vertical face they make the center of lift move to the outside tail making the rider move back to control the pitch, dragging more bits in the water.
by CHRISPI
Tue Jul 02, 2019 8:59 am
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 36
Views: 5561

Re: New summer Groveler

How about a heavy rider compared to a light rider on the same board on identical waves with the same experience. Who will be faster, or ride the most distance
by CHRISPI
Mon Jul 01, 2019 5:47 pm
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 36
Views: 5561

Re: New summer Groveler

As a small percentage of the total riding weight the board weight cannot have a significant effect on performance . How can you measure it?
by CHRISPI
Mon Jul 01, 2019 11:44 am
Forum: Paipo Board Design & Building
Topic: Immigrant board Mk2
Replies: 5
Views: 1795

Immigrant board Mk2

file1.jpeg Made with a full width core of two layers of 5mm xps held together with 6oz cloth, plus a full length 5mm thick 20mm wide 3d core foam strip to reduce bending. Covered with 20 mm polyethylene top and bottom, for buoyancy .1130 long, 560mm at midpoint, and 660mm between wing tips. The ide...
by CHRISPI
Mon Jul 01, 2019 6:26 am
Forum: Paipo Board Design & Building
Topic: The Immigrint board
Replies: 21
Views: 3338

Re: The Immigrint board

Thanks for the fantastic response, only problem it’s getting harder to decide .Back zip must be the way for me, my arms don’t rotate well. I presume a 5/4 for north east of the UK .
by CHRISPI
Sun Jun 23, 2019 11:16 am
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 36
Views: 5561

Re: New summer Groveler

I believe big wave guns are very heavy.
by CHRISPI
Sat Jun 22, 2019 11:11 am
Forum: Paipo Board Design & Building
Topic: New summer Groveler
Replies: 36
Views: 5561

Re: New summer Groveler

I think a lot of people don’t see the overall picture. The overall weight has to include the rider. The board weight as a percentage of the total riding package can’t be that significant, except when doing unloaded airs, where getting it back under the rider is important. I think science says more w...