Re: [bolger] homemade fiberglass tubing?

My buddy being paranoid, with good reason wouldn't divulge any real trade tricks. I was wondering if the peel ply should be wrapped around the laminate or maybe adhered to the inside of the tube? Or as asked earlier, would the excess resin just be forced out at the seems?
-Briggs
--- OnWed, 6/24/09, Pierce Nichols<rocketgeek@...>wrote:

From: Pierce Nichols <rocketgeek@...>
Subject: Re: [bolger] homemade fiberglass tubing?
To: bolger@yahoogroups.com
Date: Wednesday, June 24, 2009, 12:39 AM

Into the peel-ply, most likely. Or use pre-preg.

-p

On Tue, Jun 23, 2009 at 9:37 PM, Mike John<mikeboatman@ hotmail.com>wrote:


I wonder where the excess resin would go? Out the split in the pipe. Sounds like a good idea.

Mike


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Into the peel-ply, most likely. Or use pre-preg.

-p

On Tue, Jun 23, 2009 at 9:37 PM, Mike John<mikeboatman@...>wrote:


I wonder where the excess resin would go? Out the split in the pipe. Sounds like a good idea.

Mike


Make ninemsn your homepage!Get the latest news, goss and sport


I wonder where the excess resin would go? Out the split in the pipe. Sounds like a good idea.

Mike


Make ninemsn your homepage!Get the latest news, goss and sport
Sounds similar to the way some of the high power model rocket guys makes composite tubes for rocket fuselages... they tend to use Kraft tubes for mandrels, braided sleeve for cloth, and heat shrink tape to provide the pressure. When it's cured, you unwind the mandrel from the inside.

-p

On Tue, Jun 23, 2009 at 6:33 PM, briggs monteith<zogumwesterly@...>wrote:
A friend of mine who just happens to be a high-end composites guy was telling me about a method of building carbon fiber spinnaker poles for race boats. The first step is to slit a piece of PVC pipe in half and hinge it. Then a Piece of innertube is stretched to the length of the PVC and then inflated to just less then the I.D. of the pvc. Then a prescribed laminate schedule is wet out and wrapped around the innertube. The neat part the way he describes it is closing the hinged piece of PVC around the tube and clamping it shut with radiator clamps.
next the tube is inflated and uniform pressure is applied on the inner wall pressing the laminate in place at pressures similiar to vacuum bagging.

Has any one tried this? it seems like it would be an excellent way to make a mast for a small boat.



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oh the ends of the innertube are tied to seal it,and I was thinking fiberglass not carbon fiber.

--- OnTue, 6/23/09, briggs monteith<zogumwesterly@...>wrote:

From: briggs monteith <zogumwesterly@...>
Subject: [bolger] homemade fiberglass tubing?
To: bolger@yahoogroups.com
Date: Tuesday, June 23, 2009, 9:33 PM

A friend of mine who just happens to be a high-end composites guy was telling me about a method of building carbon fiber spinnaker poles for race boats. The first step is to slit a piece of PVC pipe in half and hinge it. Then a Piece of innertube is stretched to the length of the PVC and then inflated to just less then the I.D. of the pvc. Then a prescribed laminate schedule is wet out and wrapped around the innertube. The neat part the way he describes it is closing the hinged piece of PVC around the tube and clamping it shut with radiator clamps.
next the tube is inflated and uniform pressure is applied on the inner wall pressing the laminate in place at pressures similiar to vacuum bagging.

Has any one tried this? it seems like it would be an excellent way to make a mast for a small boat.


A friend of mine who just happens to be a high-end composites guy was telling me about a method of building carbon fiber spinnaker poles for race boats. The first step is to slit a piece of PVC pipe in half and hinge it. Then a Piece of innertube is stretched to the length of the PVC and then inflated to just less then the I.D. of the pvc. Then a prescribed laminate schedule is wet out and wrapped around the innertube. The neat part the way he describes it is closing the hinged piece of PVC around the tube and clamping it shut with radiator clamps.
next the tube is inflated and uniform pressure is applied on the inner wall pressing the laminate in place at pressures similiar to vacuum bagging.

Has any one tried this? it seems like it would be an excellent way to make a mast for a small boat.