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

  1. #101
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    The ends should be your worry!!
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  2. #102
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by Joker11 View Post
    This is awesome.

    So many arguments.

    You know what a pony bottle is in SCUBA diving?
    Itís small but filled to 3000psi. You can fit an air hose on it with a regulator and have way more air than that cylinder at 125psi.

    I am mot joining the arguments. Thatís all you guys.
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  3. #103
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by mla2ofus View Post
    The ends should be your worry!!
    Too thick too budge and has small diameter So it’s very strong and will have full pen key hole weld with 5356. Plastic can hold 4 times the pressure of what I’m putting in at the same diameter why wouldn’t this hold a 1/4 of what plastic can hold? Given no corrosion inside if that’s what your stuck on
    Last edited by motolife313; 12-17-2020 at 10:18 PM.

  4. #104
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I’m guessing those pony tanks are made from 7075?

  5. #105
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by Capt B View Post
    6 CF Catalina Scuba Dive Pony Tank Bailout Bottle with Thermo Valve Din Yoke Reg 3000psi $59.99
    https://www.ebay.com/i/164580960924?...RoCatkQAvD_BwE
    Probably need to go to the scuba shop to fill it

  6. #106
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post
    Probably need to go to the scuba shop to fill it
    You don't need to put 3,000psi in it just put 125psi in it from a compressor.
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  8. #107
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by mla2ofus View Post
    The ends should be your worry!!
    Very true.

    In a math comparison, head types on the vessel were:
    Hemispherical (Hemi)
    Semi Elliptical (SE)
    Flanged and Dished (F&D)
    Flat

    The cylinder was 1/2" thick.

    The thicknesses of each head type were calculated to match the known design pressure of the 1/2" cylinder.

    Results:
    Hemispherical: 0.2474"
    Semi Elliptical: 0.4947"
    Flanged and Dished: 0.8901
    Flat end: 3.9120"

    Flat needed 3.9120" to match 1/2" wall cylinder pressure specs....

    Moto, you still believe you understand all the risks and the physics behind what you are doing?
    Last edited by MinnesotaDave; 12-18-2020 at 08:50 AM.
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  9. #108
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by MinnesotaDave View Post
    Very true.

    In a math comparison, head types on the vessel were: Hemispherical (Hemi)
    Semi Elliptical (SE)
    Flanged and Dished (F&D)
    Flat

    The cylinder was 1/2" thick.

    The thicknesses of each head type were calculated to match the known design pressure of the 1/2" cylinder.

    Results:
    Hemispherical: 0.2474"
    Semi Elliptical: 0.4947"
    Flanged and Dished: 0.8901
    Flat.end: 3.9120"

    Flat needed 3.9120" to match 1/2" wall cylinder....

    Moto, you still believe you understand all the risks and the physics behind what you are doing?
    Yes I do Dave. This tank won’t corrode inside and I’ll be filling from a safe air compressor

    The 3000psi ones have 1/2” or so wall I believe. Mine is also about half the diameter of the ones I seen online. Which makes it strongerName:  59F5225B-D55D-4617-BEB1-C5FED3C6B14B.jpg
Views: 195
Size:  85.1 KBmine is under 3” on the outside

  10. #109
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    It was an example, one could use a paintball gun cylinder and do the same as scuba. Get it filled at any sporting goods store.
    Also, almost every welding supplier sells breathing air refulls as well as air refills as well as co2 refills.

    Options are open.
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  12. #110
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post
    Yes I do Dave. This tank won’t corrode inside and I’ll be filling from a safe air compressor

    The 3000psi ones have 1/2” or so wall I believe. Mine is also about half the diameter of the ones I seen online. Which makes it stronger mine is under 3” on the outside
    Unfortunately, you missed the point...but oh well.

    The numbers I posted show how bad it is to use flat end caps btw...there is more too but doesn't seem like you're open to learning right now.
    Last edited by MinnesotaDave; 12-18-2020 at 08:51 AM.
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  14. #111
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by MinnesotaDave View Post
    ..there is more too but doesn't seem like you're open to learning right now.
    LMAO !

    seems like all you guys do is Ride poor Moto....

    takes the heat off me for pointing out his usual nonsense.
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  15. #112
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by MinnesotaDave View Post
    Unfortunately, you missed the point...but oh well.

    The numbers I posted show how bad it is to use flat end caps btw...there is more too but doesn't seem like you're open to learning right now.

    I donít know what 1/2Ē tube your taking about what diameter tube your taking about and I couldnít see needing over 3Ē thick ends Unless your talking about a 3í diameter tube trying to hold 500 psi Iím clearly missing something not sure what pressure youíre talking either. Thank you for trying to help
    Last edited by motolife313; 12-18-2020 at 10:24 AM.

  16. #113
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by John T View Post
    LMAO !

    seems like all you guys do is Ride poor Moto....

    takes the heat off me for pointing out his usual nonsense.
    Ya they like to over think that’s for sure.

  17. #114
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post
    Ya they like to over think that’s for sure.
    better to over think than not think at all

    Duhhhh...
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  18. #115
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by John T View Post
    better to over think than not think at all

    Duhhhh...
    You guys are bunch of losers

  19. #116
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post
    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 ideasAttachment 1721044Attachment 1721045just wanna blow the wood chips and dust away from the caps each time before filling upAttachment 172104649” bar on that puppy and it pulls it like nothing
    " I'm open to ideas"🤣

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  21. #117
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by M J D View Post
    " I'm open to ideas"��
    “ not sure how I wanna fill it open to ideas” yes that’s right. Schrader valve was suggested and I said that was a good idea. Comparing apples to oranges like your friends

  22. #118
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Good try tho

  23. #119
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post
    “ not sure how I wanna fill it open to ideas” yes that’s right. Schrader valve was suggested and I said that was a good idea. Comparing apples to oranges like your friends
    No, your not open to ideas. Your looking for an" attaboy" big pay on the back for your nonscencacle " innovation". IMO that device would make a better piggy bank than an air tank since it would be hard pressed to inflate a basketball with that volume of air. As for the safety , go with it, it's your risk. But saying your open to suggestions means pay me on the back and praise the shlt out of me.

  24. #120
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Thanks for your opinion

  25. #121
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Nevermind
    Last edited by timrb; 12-18-2020 at 11:10 AM.

  26. #122
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    Re: Air tank build for cleaning chainsaw oil/fuel caps



    I’ll just leave this here. Working pressure of the Pvc pipe is 450, yes 450, yes 450 psi and it didn’t blow till over 1,100 psi

    flat ends we’re used looks like. And I’m using aluminum btw Incase you over thinkers forgot which is way stronger, which is way stronger then plastic.

  27. #123
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Quote Originally Posted by motolife313 View Post


    I’ll just leave this here. Working pressure of the Pvc pipe is 450, yes 450, yes 450 psi and it didn’t blow till over 1,100 psi

    flat ends we’re used looks like. And I’m using aluminum btw Incase you over thinkers forgot which is way stronger, which is way stronger then plastic.
    That's a hydrostatic " test". Big difference between that and air pressure. The former is a leak, the latter a bomb.

  28. #124
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    Ok, be nice to figure out the equivalent to air pressure. Probably still extremely high pressure.

  29. #125
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    Re: Air tank build for cleaning chainsaw oil/fuel caps

    I use this setup like Joker was mentioning. A scuba tank, adjustable scuba regulator, 5 foot hose and QD for air tools. I keep something loke this in my work truck. The steel tank is next to a 19 cubic foot aluminum tank then the 6 cubic foot aluminum pony tank also mentioned earlier. I have also used this to power a nailgun inside and on top of the house.

    Moto does not have a dive certification card and will not be able to get a scuba tank filled at a dive shop.

    I would be very surprised if a welding shop would fill a scuba tank. As a diver who is also certified in a bunch of other diving related maintenance and inspection tasks, I would not trust their air quality. Although some places might have industrial quality high pressure air compressors.

    I have access to and can make a set of fittings which allows me to fill this tank from a shop compressor. That would be to about 135 to 160 psi. Moto could potentially do the same. He will not.




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