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Air compressor question
If I'm lucky I may have my shop set up like I dream of in 2022. My compressor is a 50/60? gal. horozontal in it's own little room under a stairway. The farthest from the compressor I have been using the air W/common 1/2 hose is about 50ft., things work fine. Now I bought myself a Christmas present of an airhose reel,(50 ft.) that I've mounted on the wall about 70/80 ft. from the compressor to reach farther outside with.
OK, now the question. I've got a BIG portable air tank, just too big and heavy,(30-35 gal?) to lug around. A friend tells me to hook the portable into the airline just ahead the hose reel as sort of a reserve or I won't have enough volume by the time the air gets from the compressor to the end of the reel hose.
What do you think??
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Air compressor question
I think your friend is half right. Using the (semi-)portable as an expansion tank is a good idea. But not for the reason he states. Sounds like you and I have about the same size compressor, and I've run 200' of 3/8" hose (4x50) off mine quite often. It's overall system pressure - to include tanks/manifolds/hoses/tools - that tells the compressor when to engage/disengage.
//greg//
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Air compressor question
If anything the tank would be after all the reels, swiveles, joints, elbows, internal hose friction and any other pressure/volume robbing obstructions.
If pressure/volume is a concern at the end of the line, I'd run 3/4" water pipe from A to B.
Years ago my former boss piped our 25,000 sft. factory for 130PSI air using Schedule 40 2-1/2" CPVC pipe. The pipe said it was rated at 300PSI. However, to the boss's dismay the glued on fittings were not. Thousands of dollars of pipe and labor were lost in minutes when it all blew apart. All had be removed and replaced with steel. DOH!
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Air compressor question
I ran common 1/2" copper water pipe when I plumbed my shop.
The only thing out of standard was the soldering. I used very course emery cloth to score the pipe in circles around the end and a battery terminal brush to score the insides of the fittings and elbows. By doing this the combination of scoring and solder form a grip almost like fine threads.
After 10 years of 125psi I still haven't had a single problem.
The large inside diameter of the pipe allows for great flow rates.
I have outlets throughout the shop, one near each door and one out through the back wall.
Best of luck.
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Air compressor question
Hey Kenn...er...Murf:
Course = what you groom or path taken
Coarse = what sand paper you used
Jis' sayin' buddy 
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Air compressor question
Assuming that most of your use will be in the 50' hose-reach, and that any of us will survive until that year, simplest would be to get a couple more lengths (50 and/or 100), put quick-connectors on all ends, hang the spares on a peg or old car rim, and just connect what and when you need.
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Air compressor question
Thank you for all the response, for right now I'll use the idea that Auer came up with. I found three new rolls of 1/2 hose and I think enough quick couplers in the back shed.
I'll connect them from the compressor to the spare tank then into the hose reel. That way it will be easy to change things and I can use the portable if I have to I'll put it in the loader bucket to carry it.
Murf has a good Idea but the hose isn't going to hurt the checkbook.
Guess what I meant by the 2022 thing is that if you guys are like me no shop will ever be just right, we always are changing something.
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Thank you for all the response, for right now I'll use the idea that Auer came up with. I found three new rolls of 1/2 hose and I think enough quick couplers in the back shed.I'll connect them from the compressor to the spare tank then into the hose reel. That way it will be easy to change things and I can use the portable if I have to I'll put it in the loader bucket to carry it.Murf has a good Idea but the hose isn't going to hurt the checkbook.Guess what I meant by the 2022 thing is that if you guys are like me no shop will ever be just right, we always are changing something.
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My shop is perfect, I just need to build it. 
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... I'll use the idea that Auer came up with. I found three new rolls of 1/2 hose and I think enough quick couplers in the back shed.
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I guess you missed that in my response. Or maybe I wasn't clear enough. My 200' of air hose is comprised of four 50' sections (that's what the 4x50 meant). More specifically, all have QDs; two 50' sections on the take-up reel, two more 50' sections that can be attached if/when additional length required. Pretty standardized concept for those of us who don't want to invest in hardline installations.
//greg//
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greg_g
Yes, I apologize for answering and giving recognition to the others and not your response which was there for me to read right away. The Mrs. was ugring me to get off that thing and get ready for Church right then, so my answer was made in haste.
I do have plenty of 1/2 in. black iron pipe that was originally intended to pipe the gas in to the furnace and pipe the air around the building. The gas did get piped in but the compressed air never got done.
There never seems to be an end to the things I want to do to improve the shop but being realistic the things left to do like hardlineing the air, putting in a freight elevator, etc, etc. will probably add little to the value of the building. I've had other buildings from a dirt floor chicken coup on up that were on rented farms that I made do as a shop but this is the second building I've built that was intended from the start to be a shop. I leared a few things from doing them wrong the first time, and still never learned everything I should have.
Frank.
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