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Thread: Air tank build for cleaning chainsaw oil/fuel caps

  1. #1
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    Air tank build for cleaning chainsaw oil/fuel caps

    2.5” id with 3/16 wall. 2’ long. 1/4 end caps and 1/2” for the fitting boss. Going to put a small gauge on it also. Not 100% sure how I wanna fill it. I’m open to ideasName:  35F6851C-51B8-4B8E-A1D6-21A6F350E7E4.jpg
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Size:  118.8 KBName:  D8744CED-B872-4609-ADCB-F7B817A8406B.jpg
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Size:  85.3 KBjust wanna blow the wood chips and dust away from the caps each time before filling upName:  B7455784-E487-4559-808E-0D940B920B0E.jpg
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Size:  245.5 KB49” bar on that puppy and it pulls it like nothing

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I keep a little stiff bristle brush handy in the saw box... works great for brushing the dirt off the bark where you're going to part the stump after someone running the hoe splashes dirt on everything

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    An old 20lb. propane tank and a short hose will hold a lot more air.

    a couple fittings is all you need.
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    Re: Air tank build for cleaning chainsaw oil/fuel caps


    motolife313


    Quote Originally Posted by motolife313 View Post
    . . . Iím open to ideas . . .
    Don't reinvent the wheel . . .


    Opus



    .

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by John T View Post
    An old 20lb. propane tank and a short hose will hold a lot more air.

    a couple fittings is all you need.

    That’s a lot more heavy. Don’t need much to blow off the caps Is what I’m thinking
    Last edited by motolife313; 12-15-2020 at 11:27 PM.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post
    That’s a lot more heavy. Don’t need much to blow of the gaps Is what I’m thinking
    That 2.5" pipe isn't going to hold much air. A carpenter buddy of mine has a little Craftsman cordless pancake compressor that cost less than $100 bucks and pumps an honest 125 PSI. I think I'm gonna get one just for pumping the garden tractor tires and stuff like that. Way easier to carry to the flat tire.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I’ve got a 3 gallons compressor oiled but I like to keep the weight down and take less stuff when out milling in the bush. Will see. I’ll probably get the thinnest air line to keep my volume down and pressure up. It’s also a welding project for fun and keeping my skills up. If I can get 12-24 good burts I think it may be worth it, Probably about a gallon or more in the tube, haven’t added it up yet. Bore x bore x stroke x.7854 I think lol.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    About a half gallon - your cylinder 117.8 cu/in gallon ~230 cu/in

    Have you thought about putting a thicker end on as a boss for the pressure gauge? then mount one of the little 1/8 back mount gauges like the fire extinguishers have on them...
    Name:  pressgaugeback1.jpg
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    The plan was putting the gauge and hose on that 1/2” plate with 2 holes. Probably could have used a smaller hole for the gauge.


    Thanks for adding that up. I think it’s actually 25.5” long just for the guys who don’t think it’s big enough lol. I figured little bigger wouldn’t hurt. Edit no homo on that last one lol
    Last edited by motolife313; 12-16-2020 at 12:10 AM.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Moto, off the top of my head, I'm thinking you might wind up with a pipe bomb. I'm in no way sure what kind of pressure that thing will hold without coming apart in lots of pieces. Like I say.........I DON'T ACTUALLY KNOW. But it would be a good idea to get an idea what burst pressure is on something like that.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I think that is tubing so it would be a tubing bomb...

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by farmersammm View Post
    Moto, off the top of my head, I'm thinking you might wind up with a pipe bomb. I'm in no way sure what kind of pressure that thing will hold without coming apart in lots of pieces. Like I say.........I DON'T ACTUALLY KNOW. But it would be a good idea to get an idea what burst pressure is on something like that.
    Guys put over 100 psi in pvc tube so I’m guessing this would hold about 300+ psi. 125-150 ain’t much for such a strong tube setup. Being only 2 7/8” round makes it very strong


    Name:  1C75B7E8-4AA0-4F02-980E-473B662FEBE0.jpg
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Size:  40.6 KBim thinking this valve is a good idea for letting the air in and trapping it
    Last edited by motolife313; 12-16-2020 at 12:20 AM.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I've seen aluminium tanks considerably bigger with thinner walls rated for 150.. so burst ought to be a bit higher of course I don't know what alloy they were...

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    https://www.clintonaluminum.com/alum...0and%20bottles.

    Scroll down, and read about the alloy most commonly used. I dunno if it's used in the annealed, or heat treated condition.
    Last edited by farmersammm; 12-16-2020 at 12:23 AM.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by ronsii View Post
    I've seen aluminium tanks considerably bigger with thinner walls rated for 150.. so burst ought to be a bit higher of course I don't know what alloy they were...
    Like the one at HF???

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I hate it when guys guess at stuff

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Haven't seen the HF one but... I'm gonna GUESS it similar

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    We don't want Moto to be half the man he used to be

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Sorta like hydraulic cylinders...........not just plain ol' metal..........they buy "mother tubes" to make 'em out of, and it ain't A-36

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    This stuff is 6061 and I’ll be using 5356 with singles passes and I’ll be preheating Name:  594EAEB9-22DE-4170-8260-F5E15216A973.jpg
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Size:  95.4 KBtank I made in the past. 3/8” end caps.

  32. #21
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Flat ends are the worst choice for pressure tanks!!! they will have huge amounts of flex on the adjoining welds.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    https://www.chicagotube.com/products...andrel-st52-3/ I know this isn't for air, it's used in hydraulic cylinders, but it illustrates the possible mistakes one could make................say.........using regular DOM for a cylinder. Just a thought.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    While I'm sure the 100-150 psi you'll be using is way below what a 2.5 pipe of that thickness is capable of holding... it would be a good thing to build yourself one of those hydro testers like tackit made and yours is small enough it could easily be charged for testing with a grease gun.

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by ronsii View Post
    Flat ends are the worst choice for pressure tanks!!! they will have huge amounts of flex on the adjoining welds.
    Depending on how thick the metal is how much pressure you use and how strong the welds are that’s true

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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by ronsii View Post
    While I'm sure the 100-150 psi you'll be using is way below what a 2.5 pipe of that thickness is capable of holding... it would be a good thing to build yourself one of those hydro testers like tackit made and yours is small enough it could easily be charged for testing with a grease gun.
    I’m really not worried. This puppy ain’t gona move. Should have seen a guy brazing a square 16 gauge or less Square box and put over a hundred in it on here. Braze job looked very poor if I remember right and it held. If plastic pvc can hold it’s a no brainer aluminum will hold

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