---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 04/28/21: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:03 AM - help in assignment writing (jamesstephens) 2. 06:11 AM - Re: How to seal Tygon tube to barb fittings (Steve Stearns) 3. 06:13 AM - Re: How to seal Tygon tube to barb fittings (Steve Stearns) 4. 06:24 AM - Re: Re: How to seal Tygon tube to barb fittings (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 12:03:12 AM PST US Subject: AeroElectric-List: help in assignment writing From: "jamesstephens" For the best [url=https://www.irelandassignmenthelp.com/]help in assignment writing[url] services in Ireland hire the experts of Ireland Assignment Help Our Writers are fluent in completing Assignment work on time for all students. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501542#501542 ________________________________ Message 2 _____________________________________ Time: 06:11:28 AM PST US From: Steve Stearns Subject: AeroElectric-List: Re: How to seal Tygon tube to barb fittings > rparigor@hotmail.com> > > Hi Group. I have a mix of instruments that use various Barb fittings. Some > 1 barb, some 2 and some more. Anything Winter or from Germany have gorgeous > 2 rounded bump barbs. They don't leak at all. Some of the others with some > poking I can get to leak. In the soaring community, if using old tubing or > if you suspect leaking, they use a Green Latex farm animal castrating > donut. I have some and they work great. Size is 5.5mm ID (.217") x 13.5mm > OD (.532"). The Tygon tubing I'm using is 9/32"OD (.281") x 5/32"ID (.156") > and depending on barb OD will grow in size. I can only use the Latex rings > on about 1/4 of my connections because the rings are so thick (.158"). I > would like to use dash 105 O-Rings. I tried a gazillion small clamps, > nothing tickles my fancy. ID not right size, too much tension and point > loading on wire clamps is 1 on bottom and 2 on top. I tried a double wrap > of .25" safety wire, kinda OK but very fiddly to get it just right. You > want a complete circle and it ne! > eds to go between the point of the barbs so has to be very thin. > Anyway McMaster has A70 durometer dash 105 O-Rings in Buna-N, Viton, > Silicone, EPDM and Poly Urethane. They also have harder A90 in Poly > Urethane. > Any input on which compound of O-Rings might keep tension better over time > when used as a rubber band? > Any other ideas welcomed. > Anyone know of a small circular spring like those used in lips of seals > with an approx ID of less than .281"? > Thx. Ron P. > I make a tourniquet using two wraps of lacing cord. Really easy and seems to work fine. Steve Stearns O235 Longeze Boulder / Longmont CO ________________________________ Message 3 _____________________________________ Time: 06:13:53 AM PST US From: Steve Stearns Subject: AeroElectric-List: Re: How to seal Tygon tube to barb fittings P.S. I do the same thing for the fuel-line on barbs on my old BMW motorcycle. Works there too even with the scratched up aluminum barbs. Steve. On Wed, Apr 28, 2021 at 7:10 AM Steve Stearns wrote: > > rparigor@hotmail.com> > > > > Hi Group. I have a mix of instruments that use various Barb fittings. > Some > > 1 barb, some 2 and some more. Anything Winter or from Germany have > gorgeous > > 2 rounded bump barbs. They don't leak at all. Some of the others with > some > > poking I can get to leak. In the soaring community, if using old tubing > or > > if you suspect leaking, they use a Green Latex farm animal castrating > > donut. I have some and they work great. Size is 5.5mm ID (.217") x 13.5mm > > OD (.532"). The Tygon tubing I'm using is 9/32"OD (.281") x 5/32"ID > (.156") > > and depending on barb OD will grow in size. I can only use the Latex > rings > > on about 1/4 of my connections because the rings are so thick (.158"). I > > would like to use dash 105 O-Rings. I tried a gazillion small clamps, > > nothing tickles my fancy. ID not right size, too much tension and point > > loading on wire clamps is 1 on bottom and 2 on top. I tried a double wrap > > of .25" safety wire, kinda OK but very fiddly to get it just right. You > > want a complete circle and it ne! > > eds to go between the point of the barbs so has to be very thin. > > Anyway McMaster has A70 durometer dash 105 O-Rings in Buna-N, Viton, > > Silicone, EPDM and Poly Urethane. They also have harder A90 in Poly > > Urethane. > > Any input on which compound of O-Rings might keep tension better over > time > > when used as a rubber band? > > Any other ideas welcomed. > > Anyone know of a small circular spring like those used in lips of seals > > with an approx ID of less than .281"? > > Thx. Ron P. > > > > I make a tourniquet using two wraps of lacing cord. Really easy and seems > to work fine. > > Steve Stearns > O235 Longeze > Boulder / Longmont CO > ________________________________ Message 4 _____________________________________ Time: 06:24:47 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: How to seal Tygon tube to barb fittings At 08:12 AM 4/28/2021, you wrote: >I make a tourniquet using two wraps of lacing >cord.=C2 Really easy and seems to work fine. > >Steve Stearns >O235 Longeze >Boulder / Longmont CO Here's a string tie technique that produces a very secure installation: https://tinyurl.com/ydms6p4a Used this yesterday to refurbish the CO2 discharge line on my DIY 'sodastream'. The old one I cut off had been on there 5+ years and was still tight. Bob . . . 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