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Old 07-27-2014, 04:51 PM   #1
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Propane tanks

I have a 26BH that came with 30lb tanks. I want to switch them out to 20lb tanks. I think it will save me a little weight and make it easier to exchange/fill on a trip.

Anyhow I tried to get a new center rod that holds down the tanks, but I can't seem to find one. All are 3/8 diameter on the internet. Thought mine were 1/2 inch but after searching around at Home Depot figured out that it was 1.75mm.

Anyone know why Jayco would use a metric rod and second has anyone done this swap?
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Old 07-27-2014, 06:29 PM   #2
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I added dual 20 lbs tanks to my popup. I just bought the tray and the large wing but came with it and I just bought a piece of ready bolt or all thread and it worked great
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Old 07-29-2014, 05:15 PM   #3
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Originally Posted by popo719 View Post
Thought mine were 1/2 inch but after searching around at Home Depot figured out that it was 1.75mm.

Anyone know why Jayco would use a metric rod and second has anyone done this swap?

Not sure why Jayco used a metric thread unless they sourced a supplier that does. You could probably take the existing rod to a machine shop, have them cut the rod down and rethread the shortened rod or cut out a section and weld the threaded end back on.
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Old 07-29-2014, 06:09 PM   #4
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I'm a machinist and there isn't any metric threaded rod that measures 1.75mm. Are you sure the folks at HD didn't say M12 x 1.75? Inch threads are designated by the major diameter and the number of threads per inch. Metric threads are designated by the major diameter and pitch (distance from crest to crest).

Your tank hold down rod is either a 1/2-13 or an M12 x 1.75 (not likely). The next common size metric is M14 x 2.

Save yourself a bunch of money and just buy a 3' piece of 1/2-13 "all thread" and some matching nuts. Drill out the hole in the tray if you have to and cut the rod to the proper length.

The charge out rate for most machine shops in my area is $75/hr.
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Old 07-29-2014, 06:16 PM   #5
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Quote:
Originally Posted by mcfarmall View Post
I'm a machinist and there isn't any metric threaded rod that measures 1.75mm. Are you sure the folks at HD didn't say M12 x 1.75? Inch threads are designated by the major diameter and the number of threads per inch. Metric threads are designated by the major diameter and pitch (distance from crest to crest).

Your tank hold down rod is either a 1/2-13 or an M12 x 1.75 (not likely). The next common size metric is M14 x 2.

Save yourself a bunch of money and just buy a 3' piece of 1/2-13 "all thread" and some matching nuts. Drill out the hole in the tray if you have to and cut the rod to the proper length.

The charge out rate for most machine shops in my area is $75/hr.

X-2 agree 100 %
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Old 08-20-2014, 06:39 AM   #6
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Guys,

I just finished switching to the 20lb tanks. The center rod was in fact metric M12 x 1.75. I found one at a local Fastenal and cut it to size. I couldn't cut the original rod because it wasn''t fully threaded, and I would have lost the threads if I cut it. The rod cost me $16. I also bought a 20lb cover to fit better.
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Old 08-20-2014, 09:57 PM   #7
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Quote:
Originally Posted by mcfarmall View Post
I'm a machinist and there isn't any metric threaded rod that measures 1.75mm. Are you sure the folks at HD didn't say M12 x 1.75? Inch threads are designated by the major diameter and the number of threads per inch. Metric threads are designated by the major diameter and pitch (distance from crest to crest).

Your tank hold down rod is either a 1/2-13 or an M12 x 1.75 (not likely). The next common size metric is M14 x 2.

Save yourself a bunch of money and just buy a 3' piece of 1/2-13 "all thread" and some matching nuts. Drill out the hole in the tray if you have to and cut the rod to the proper length.

The charge out rate for most machine shops in my area is $75/hr.
When I changed from 7 gallon tanks to 10 gallon tanks thats what I did. 1/2-13 all thread and matching nuts. Works real good.
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