autogeekonline car wax, car care and auto detailing forum Autogeek on TV
car wax, car care and auto detailing forumAutogeekonline autogeekonline car wax, car care and auto detailing forum HomeForumBlogAutogeek.net StoreDetailing Classes with Mike PhillipsGalleryDetailing How To's
 
Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Newbie Member
    Join Date
    Apr 2019
    Posts
    15
    Post Thanks / Like

    Vacuum Hose Question

    So this might sound like a dumb question. I have been using a small wet/dry vac and looking to upgrade to a bigger more powerfull one that will have enough suction power to do the job. I am looking at a 12 gallon, Vacmaster 5.5hp vac that I can get at a great price (along with a 20' hose) and my question is the following:
    Will I lose at lot of sucking power by running a 20 foot hose?
    My current vac has a 7 foot hose and since wifey is the one who uses the vac, I would like to run a longer hose to make it easier for her. Please advise

    Thanks,
    Ed

  2. #2
    Super Member Belo's Avatar
    Join Date
    Jul 2014
    Location
    Rochester, NY
    Posts
    492
    Post Thanks / Like

    Re: Vacuum Hose Question

    been too long since engineering classes, and I'm sure there's a point of diminishing returns but as long as you have a good seal I dont see why a longer hose would signiricantly reduce airlow. Even pulling water at that distance wouldn't have a dramatic effect unless you were pulling vertically and introducing head. And air doesn't work like that, so I guess the only thing that would decrease your flow is the increased surface area of the extra hose length that you're pulling the air across which introduces friction. But again should not be enough for you to notice.

    -disclaimer my ass is not a practicing aerospace engineer, but i do have a bs in environmental engineering lol.
    2009 Pontiac G8GT
    2015 Ford Explorer Limited
    2019 Chevy Silverado RST Z71

  3. #3
    Super Member Belo's Avatar
    Join Date
    Jul 2014
    Location
    Rochester, NY
    Posts
    492
    Post Thanks / Like

    Re: Vacuum Hose Question

    this bothered me, so i googled it. i think this does a pretty good job explaining it
    Vacuum hose size vs efficiency. - DoItYourself.com Community Forums
    2009 Pontiac G8GT
    2015 Ford Explorer Limited
    2019 Chevy Silverado RST Z71

  4. #4
    Super Member Eldorado2k's Avatar
    Join Date
    Nov 2015
    Location
    Los Angeles, California
    Posts
    13,659
    Post Thanks / Like

    Re: Vacuum Hose Question

    I went from 7’ to 13’, and even when combined together to make 20’ there still isn’t a drop in either sucking or blowing power.

    20’ of hose vacuums the same exact way as it does using only 7’ hose.


  5. #5
    Super Member
    Join Date
    Jul 2014
    Posts
    246
    Post Thanks / Like

    Re: Vacuum Hose Question

    Quote Originally Posted by Eldorado2k View Post
    I went from 7’ to 13’, and even when combined together to make 20’ there still isn’t a drop in either sucking or blowing power.

    20’ of hose vacuums the same exact way as it does using only 7’ hose.

    Is that two hoses combined or a single hose?

    Sent from my SM-N960U using Tapatalk

  6. #6
    Super Member Belo's Avatar
    Join Date
    Jul 2014
    Location
    Rochester, NY
    Posts
    492
    Post Thanks / Like

    Re: Vacuum Hose Question

    basically you're looking for velocity, so at those lengths you're not changing anything. Where you will see a change is if you changed the diameter of the hose. You're still sucking the same cfm, but over a wider space, so your velocity slows. And you really do want velocity for vacuuming.
    2009 Pontiac G8GT
    2015 Ford Explorer Limited
    2019 Chevy Silverado RST Z71

  7. #7
    Super Member Eldorado2k's Avatar
    Join Date
    Nov 2015
    Location
    Los Angeles, California
    Posts
    13,659
    Post Thanks / Like

    Vacuum Hose Question

    Quote Originally Posted by IH8SPM View Post
    Is that two hoses combined or a single hose?

    Sent from my SM-N960U using Tapatalk
    That’s 2 hoses combined.



    If I ever need extreme reach [like when you have to vacuum the interior of a large boat or RV] I can stretch it even further and connect my 10’ orange hose to that for a total of 30’ hose.

  8. #8
    Super Member Eldorado2k's Avatar
    Join Date
    Nov 2015
    Location
    Los Angeles, California
    Posts
    13,659
    Post Thanks / Like

    Re: Vacuum Hose Question

    They do sell 20’ hoses though... I went with 13’ because as you can see, 20’ hose is a bit much for everyday use while 7’ just isn’t quite enough sometimes. Especially when the vacuum itself is as large as it is... Used to drive me nuts having to pick up and move the vacuum around vehicles.

  9. #9
    Super Member
    Join Date
    Jul 2014
    Posts
    246
    Post Thanks / Like

    Re: Vacuum Hose Question

    Quote Originally Posted by Eldorado2k View Post
    They do sell 20’ hoses though... I went with 13’ because as you can see, 20’ hose is a bit much for everyday use while 7’ just isn’t quite enough sometimes. Especially when the vacuum itself is as large as it is... Used to drive me nuts having to pick up and move the vacuum around vehicles.
    Thanks! I believe I have an extra 7 foot section laying around but if not I found the 20ft and 13ft at my local HD via online order.

    Sent from my SM-N960U using Tapatalk

  10. #10
    Super Member sudsmobile's Avatar
    Join Date
    Jan 2018
    Location
    IE, SoCal
    Posts
    970
    Post Thanks / Like

    Re: Vacuum Hose Question

    Anybody that is using math to answer this question, let me save you some time. For the first year, I ran those $200 Shop Vacs permanently mounted in the trailer with a 50' length of pool vac hose. No problem at all. The problem is, under our workload, those vacs are only good for a few months before you burn up the motor. We recently purchased a Vacumaid Pro which comes with a 50' hose that seems to be the equivalent of pool hose. Again, no problems. That vac will suck pet hair out of the carpet, pennies from the sides of the seats. There's nothing I can't suck up with it, so the long answers is no, hose length doesn't mean anything with a decent vacuum.

Page 1 of 2 12 LastLast

Similar Threads

  1. Using wet/dry vacuum without filter question !!!
    By Webb in forum Auto Detailing 101
    Replies: 6
    Last Post: 04-27-2012, 11:11 AM
  2. Vacuum Hose Size Question
    By ShineTimeDetail in forum Auto Detailing 101
    Replies: 2
    Last Post: 01-10-2012, 12:00 PM
  3. Another Noob Question -Vacuum
    By blackoddy in forum Auto Detailing 101
    Replies: 2
    Last Post: 08-19-2009, 02:51 PM
  4. Vacuum Question
    By SATracker in forum Auto Detailing 101
    Replies: 3
    Last Post: 10-05-2008, 09:46 PM

Members who have read this thread: 0

There are no members to list at the moment.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

» March 2024

S M T W T F S
2526272829 1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31 123456