#1
Posted 19 July 2010 - 06:59 AM
We all know about the evolution of the +bow and L+L plunger head, from the dry rubber washer to Split's skirt seal and now Lt.'s grommet idea which seems to solve the priciness of the +bow plunger head, but how about trying to buy polycarbonate tube in bulk? It suckas almost as bad as the skirt seal in terms of price at around $3.48 per foot. I was poking around Mcmaster online looking for something to solve this dilemma when I came across part number 8565K41. It's Butyrate tubing and it's less expensive at $11.48 for six feet. You do the math.
Anyhow, I was just wondering if anybody with a little more experience with Butyrate tubing knows or can help to figure out if it would make a suuitable plunger tube. Any and all comments and quesions are welcome. I know very little about butyrate so whatever you know will help.
#2
Posted 19 July 2010 - 09:12 AM
#3
Posted 19 July 2010 - 12:02 PM
So it might break. It might not. Experiment and tell us.
Kruger and Dunning (1999)
#4
Posted 19 July 2010 - 01:38 PM
Hey all,
We all know about the evolution of the +bow and L+L plunger head, from the dry rubber washer to Split's skirt seal and now Lt.'s grommet idea which seems to solve the priciness of the +bow plunger head, but how about trying to buy polycarbonate tube in bulk? It suckas almost as bad as the skirt seal in terms of price at around $3.48 per foot. I was poking around Mcmaster online looking for something to solve this dilemma when I came across part number 8565K41. It's Butyrate tubing and it's less expensive at $11.48 for six feet. You do the math.
Anyhow, I was just wondering if anybody with a little more experience with Butyrate tubing knows or can help to figure out if it would make a suuitable plunger tube. Any and all comments and quesions are welcome. I know very little about butyrate so whatever you know will help.
It does look like a good option, BUT. They only ship butyrate (regardless of diameter) in uncut six foot sections. This will increase your shipping costs somewhat, and may eliminate any added value you are looking for. I've looked at it before, but decided against it for exactly that reason. Dimensionally, though, it should work great.
[15:51] <+Rhadamanthys> titties
[15:51] <+jakejagan> titties
[15:51] <+Lucian> boobs
[15:51] <+Gears> titties
[15:51] <@Draconis> Titties.
[15:52] <+Noodle> why is this so hard?
#5
Posted 19 July 2010 - 03:18 PM
@Zorn: This is what I was afraid of. I'm fairly certain that it is Cellulose Acetate Butyrate, but i'll try it and report.
@Draconis: Yes, this is another problem, but only if you are only making one +bow. I like to order in bulk and also live fairly close to mcmaster so with the nylon rods, bars, etc. combined with the low shipping, that is not a factor for me. It could be very different for others though.
#6
Posted 20 July 2010 - 11:07 AM
Butrayte:
Rockwell R78
Tensile Strength
6,300 psi
Impact Strength
4.5 ft.-lbs./in.
Specifications Met
Not Rated
Polycarbonate:
Rockwell R
118
Tensile Strength
9,000 psi
Impact Strength
14 ft.-lbs./in.
Specifications Met
United States Food and Drug Administration (FDA), Underwriters Laboratories (UL)
FDA Specification
FDA Compliant
UL Specification
UL 94HB
Simplified, the polycarbonate is much stronger(upwards of 3x impact strength), 2700lbs tensile stronger, and much harder at Rockwell R118 than R78.
People have the PC plunger tubes break, and the butryate is even weaker, so I'd be doubtful about using it.
#7
Posted 20 July 2010 - 11:08 AM
Edited by polycarb, 20 July 2010 - 11:09 AM.
#8
Posted 20 July 2010 - 12:53 PM
[15:51] <+Rhadamanthys> titties
[15:51] <+jakejagan> titties
[15:51] <+Lucian> boobs
[15:51] <+Gears> titties
[15:51] <@Draconis> Titties.
[15:52] <+Noodle> why is this so hard?
#9
Posted 20 July 2010 - 12:55 PM
Kruger and Dunning (1999)
#10
Posted 20 July 2010 - 03:17 PM
#11
Posted 22 July 2010 - 06:53 AM
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