Home made hull cradle plans. :: Catamaran Sailboats at TheBeachcats.com

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Home made hull cradle plans.

mrkurtz

Rank: Lubber

Registered: Jul 27, 2008

Last visit: Oct 09, 2011

Posts: 8
Posted: Jun 24, 2009 - 02:34 PM

I keep reading that I should toss my rollers and make some of my own cradles. I would like to see some photos or plans so I can do this.

Thanks.

A
UFgator

Rank: Lubber

Registered: Dec 09, 2008

Last visit: Apr 06, 2011

Posts: 99
Posted: Jun 24, 2009 - 02:54 PM

I did some research into this a few months back and found an article that described turning your hull upside down to create a form. Basically using a mold release type barrier and laying fiberglass on the hull bottom to make the cradle form an exact match.
smfinley

Rank: Mate

Registered: Apr 24, 2005

Last visit: Apr 18, 2023

Posts: 709
Posted: Jun 24, 2009 - 03:23 PM

If you make an exact mold use the hulls make sure you add material to simulate the carpet or other padding you will put in the cradle once complete.

--
Scott,
‘92 H18 w/SX wings
‘95 Hobie Funseeker 12 (Holder 12)
‘96/‘01/‘14 Hobie Waves
--
turbohobo

Rank: Mate

Registered: Oct 19, 2006

Last visit: Aug 16, 2017

Posts: 613
Posted: Jun 24, 2009 - 03:59 PM

I'm getting pretty tired of the roller bracket tearing up the gelcoat on my H16, if you don't get the boat lined up just right loading or unloading, the hull slips off the roller and another scratch is added. I'm looking at using 16" - 18" PVC pipe, cut into half round, mount to trailer, add carpet to cover flat head mounting bolts and see if that works better. Missed the set of 4 hull cradles Dave had up for sale.

--
TurboHobo
H14T
H16
P18
G-Cat 5.0
P16
--
MN3

Rank: Master Chief

Registered: Jun 20, 2006

Last visit: Dec 04, 2024

Posts: 7090
Posted: Jun 24, 2009 - 04:01 PM

If you remove all the rollers, how do you get the boat into the correct place?

i have rear craddles... they are not an exact fit (not even close) but as i slide my boat the hull shape changes so if i had a perfect fit cradles, it would get major stress every time my boat slides in and out of its final position on the trailer
turbohobo

Rank: Mate

Registered: Oct 19, 2006

Last visit: Aug 16, 2017

Posts: 613
Posted: Jun 24, 2009 - 04:19 PM

18" half round PVC would leave ample play needed for the variance in hull shape. And I would make sure the lip of the PVC is padded, either by overlapping the carpet or by gluing on pipe isulation foam.

--
TurboHobo
H14T
H16
P18
G-Cat 5.0
P16
--
Doug-p182-590

Rank: Lubber

Registered: Jun 18, 2008

Last visit: Jul 02, 2009

Posts: 36
Posted: Jun 25, 2009 - 04:48 PM

turbohobo18" half round PVC would leave ample play needed for the variance in hull shape. And I would make sure the lip of the PVC is padded, either by overlapping the carpet or by gluing on pipe isulation foam.

THREE CHEERS FOR PVC!!! Thaaaaaas exactly what I did. Picked up a piece of scrap 18" pvc sewar pipe at a construction yard. Made a storage tube and cut off two sets of 1-foot setions which I cut in half. Thick, padded-carpeted and mounted to the trailer. It's lasted for... 10 years now! I'm always concerned about it's strength and what the UV sunlight does to it, so 2-3 times a year with the boat off the trailer, I stand on each of the cradles - all 225 pounds of me. Hasn't broken yet! Pic below, although I doubt it will show up, so I included a link.

http://www.beginnertriathlete.com/discussion/photos/get-photo.asp?photoid=85383
TileMan5309

Rank: Lubber

Registered: Aug 12, 2009

Last visit: Sep 22, 2011

Posts: 36
Posted: Dec 07, 2009 - 07:28 PM

Ok, they look good, but exactly how did you mount / attach the PVC half pipe to the bracket thingy below it...that I can see in the last picture?

Thanks!
Wolfman

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Registered: Jun 24, 2009

Last visit: Jun 15, 2023

Posts: 1555
Posted: Dec 07, 2009 - 07:40 PM

Oh great, now I HAVE to find me some PVC sewer pipe! Great stuff!

--
Dave Bonin
1981 Nacra 5.2 "Lucile"
1986 Nacra 5.7 "Belle"
Winnipeg, Manitoba, Canada
--
turbohobo

Rank: Mate

Registered: Oct 19, 2006

Last visit: Aug 16, 2017

Posts: 613
Posted: Dec 08, 2009 - 10:49 AM

Just find your local water and sewer supply dealer, they will carry all types of PVC. A road in my area has construction going on and I picked up a 4' length of PVC pipe that will be perfect for my new hull cradles. White PVC is the thinnest at about 4mm, green PVC is 6mm and blue PVC 8mm, something to do with what it's used for, water white, sewer green, gas blue. I looked at a 5' length of the green PVC but was amazed/shocked at the weight, I could barely lift it. Drill holes through PVC and use a flat-topped carriage bolt, once attached to trailer cover head of carriage bolt with a generous dollop of silicone, when that has set, lay down strip of carpet.

Turbo
Rider_55

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Registered: Jun 26, 2009

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Posts: 150
Posted: Dec 08, 2009 - 11:32 AM

turbohoboWhite PVC is the thinnest at about 4mm, green PVC is 6mm and blue PVC 8mm, something to do with what it's used for, water white, sewer green, gas blue.

Close... has more to do with pressure rating than and burial depth than what the pipe is carrying. Gas is almost always in yellow High Density Polyethlene (HDPE)pipe with heat fused joints. Solvent welded or gasketed joints typically used with PVC are not always gas tight. Typically blue pipe is high pressure water main.