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Clear Tygon tubing: is it always inflexible?

Started by Rudemouthsky, October 18, 2014, 03:35:09 PM

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Rudemouthsky

I got this stuff from Motowheels and it's just teh suck, and I'll never get it from them again. No matter how carefully I cut it with a sharp razor, there's an inner barrier that peels. The worst part is how damn inflexible it is. Even 90 degree bends are impossible and once it's kinked a couple times, the liner inside delaminates and looks like crap. Did I just get a bad batch? Here's a few shots;

Tygon 2375 from MW:



On the contrary a full 180 deg bend is no problem for the OE stuff:



Now, the way I want to route it may be out of the question, what do you think?



Should I give the Tygon another shot? In any case I'll get it from McMaster Carr next time.
"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

ducpainter

Maybe try warming it with a hair dryer/heat gun?
"Once you accept that a child on the autistic spectrum experiences the world in
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    Ask a mother who gave birth to a stillborn.
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Rudemouthsky

Quote from: ducpainter on October 18, 2014, 03:52:29 PM
Maybe try warming it with a hair dryer/heat gun?

I did try the heat gun..I was a bit leery of over doing it though because of how sensitive the liner seems to be. McMaster-Carr classifies this stuff as "very flexible" so I thought perhaps I just received a bad batch from MW. I did find a "bend radius" stat that said "2 inches" which doesn't seem "very flexible" to me at all.

"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

Rudemouthsky

I think I figured it out actually...what Motowheels sells is the 2375 which is standard "chemical resistant", and has a hardness description of "firm". The SE-200 is the "ultra chemical resistant", and scores "soft" under the hardness description. I'll order some of that and report back.

"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

ute

If I am doing 90 deg with tygon I use an external spring over it

I have found it is all crap , stick to OE ( but must say did not know there are different hardness )

Rudemouthsky

Quote from: ute on October 18, 2014, 04:46:48 PM
If I am doing 90 deg with tygon I use an external spring over it

I have found it is all crap , stick to OE ( but must say did not know there are different hardness )

Well I'm certainly not one to always pick function over form but in this case I like the OE black hose too..but my reservoirs are billet and the window is useless for monitoring fluid health.

I'll wait till tomorrow evening to place the order if anyone wants to go in on it? It's only sold in 2 foot lengths but I'll cut whatever length you need and pick up the tab for shipping it to you in the lower 48. Here's the product page for it:

http://www.mcmaster.com/#6519t13/=u7l4m9
"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

DucHead

#6
Is that 2375 Tygon?  I've got some 90+° bends in mine and no problems. I buy it from us plastic.com.  Here's an old pic of my 1216 Bandit:

'05 S4R (>47k mi); '04 Bandit 1200 (>92k mi; sold); '02 Bandit 1200 (>11k mi); '97 Bandit 1200 (2k mi); '13 FJR1300 (1k mi); IBA #28454 "45"

stopintime

I'm pretty sure I got mine from YoYoDyne, but have no idea what it is.

252,000 km/seventeen years - loving it

Rudemouthsky

Yep, the stuff I got is just poop apparently. On the bright side I got my brake hoses in the mail and they fit. :-D



"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

Rudemouthsky

#9
Another thing I discovered through Tygon themselves is that the 2375 is NOT approved for constant exposure to ethylene glycol. Only the ultra (SE-200) is. Nothing nice to say about Motowheels, so...I'll just throw this $12 in the trash and order from MMC. :)
"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs


Rudemouthsky

"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs

DucHead

One more for posterity: Tygon 2375 on my buddy's 748 -> 853:
'05 S4R (>47k mi); '04 Bandit 1200 (>92k mi; sold); '02 Bandit 1200 (>11k mi); '97 Bandit 1200 (2k mi); '13 FJR1300 (1k mi); IBA #28454 "45"

oldndumb

I have used Tygon for years processing liquid fueled rockets and associated equipment, both flight and GSE. I have it on three bikes and have not had any problems as described by the OP.

Anyone interested in using it needs to do a bit of research because there are several flavors. You can Wikipedia it, Google it, or go to the manufacturer web site. My experience is that the easiest way to buy it for bike use is to refer to http://www.kurveygirl.com/shop/index.php?cPath=106&osCsid=g4scs4kmafqc7604eu3ber1bn2.  Look for Tygon Tubing in the pull down menu on the left side.

She has done the research and lists the basics particulars for each type she carries.

Rudemouthsky

"while there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free." -Debs