Eric,
Any recollections on cost of the Franklin tubes?
Thanks,
Paul M
On Thu, Oct 17, 2013 at 1:38 PM, Eric Boyer
<<mailto:jeb19@xxxxxxx>jeb19@xxxxxxx> wrote:
Franklin Fibre has tubes in paper phenolic and other compositions in
various sizes and wall thicknesses:
<http://www.franklinfibre.com/phenolic_paper_tubes.html>http://www.franklinfibre.com/phenolic_paper_tubes.html
"...available in diameters ranging from .118" ID to 49.2" ID" (!)
We've used it both as fuel cartridge casings and as an X-ray
translucent cartridge/pressure vessel (thick-walled, of course!) for
our hybrid rocket work.
Eric
At 09:40 AM 10/17/2013, Robert C Steinke wrote:
I got some paper phenolic liners custom made by Precision Paper Tube
(<http://pptube.com>pptube.com). They are 5" ID, 5.25" OD, .125"
wall, and 36" long. When I bought a batch of 5 they were about $200
each. Make sure to specify convolute wound, not spiral wound.
Daryle, I still have some left if that size would work for you.
Bob Steinke
On Wed, 16 Oct 2013 12:56:14 -0700
Daryle Dismukes <<mailto:daryled@xxxxxxxxx>daryled@xxxxxxxxx> wrote:
Those of you who are working with fuel grains in the 150mm / 5.5-6 inch
diameter range, what are you using for your motor cases and liners? The
largest I've done before is 98mm, and I used as much off the shelf Aerotech
hardware as I could. Now I need to do something larger in a hurry at work
and I'm hoping to find a source of pre-made carbon phenolic tubes between
5.5 to 6 inches in diameter. Any sources or ideas? Other things to try?
-Daryle
