Upgrade 36 blower to 45?

Discussion in 'the CleAn Room' started by Jeremy Martin, Apr 13, 2018.

  1. Matt Wood
    Matt Wood

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    @Jeremy Martin , did you ever tell us what your HG is set at? If it's just set at the standard 12, bump it up to 14-15, and bump up the rpm by 300 more. You should get a noticeable difference after that. Just make sure your exhaust is blowing under the van/trailer/box truck/whatever you have, to keep it cool.
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  2. Mrice
    Mrice

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    If you want more suck, maybe you could just tighten your factory vac relief all the way closed and put a kunkle valve on your waste tank. Not sure about the routing of your vac hose through the machine but you could just run straight 2.5 to the waste tank.
  3. bob vawter
    bob vawter

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    2 and 7/8 od......
    Becuz yor stainless tank filter is
    2 and 7/8 id
  4. sOOper hero
    sOOper hero

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    what's Briggs' specs for max RPM on that motor?
    If 3600, I'd be running it at 3200 minimum under load

    ..LT.A.
  5. Jeremy Martin
    Jeremy Martin

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    Not sure of the max rpm.
  6. Jeremy Martin
    Jeremy Martin

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    Gauge does read 12-13 most of the time
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  7. Jeremy Martin
    Jeremy Martin

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    Replacement at harbor is listed at 3600 max rpm.
  8. sOOper hero
    sOOper hero

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    what RPM do you run at now?

    most air cooled twins spec max at around 3400-3600 no load RPM

    and since Boxxers are direct coupled, that's your blower rpm too

    I'd wind it up and crank down the relief valve to 14HG

    ..L.T.A.
  9. Jeremy Martin
    Jeremy Martin

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    I've made no changes. Manual says 3000 rpm motor. 3200 blower
  10. Jeremy Martin
    Jeremy Martin

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    I'm sure I'm dumb. What's wind it up?
  11. sOOper hero
    sOOper hero

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    run it at higher RPM

    3200 minimum under load (meaning wand on the carpet pulling 12-14hg)

    ..L.T.A.
  12. Lee Stockwell
    Lee Stockwell

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    I downloaded the manual too. The specs list a higher rpm for the blower than the engine for whatever reason.

    The blower will in fact turn at exactly the same speed as the engine.

    So speed it up! Adjust the governor linkage.
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  13. Lee Stockwell
    Lee Stockwell

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    With a Tiny Tach get the "no-load" speed to 3600 rpm on high, so that it only drops to 3200 rpm under full load (as Larry just said).

    Engine is made for full speed operation! Will actually run cooler.
  14. bob vawter
    bob vawter

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    :shifty:
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  15. SamIam
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    Ok Doyle Bloss don’t look at this thread my bad!
  16. doylebloss
    doylebloss

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    Let me start with my "mechanical idiot" point of view, then we will get the engineers to answer.
    The first thing I recommend to anyone who is looking to upgrade from a machine with a #3 blower to a machine to a #4 blower is to measure your average hose pulls on a job for a week. Over the week if you average 150-175 feet per job, then getting a bigger blower is spending a lot of money for slightly faster drying times. If you average more than that, or want to do dual wanding, then it is something to consider. Don't get "blower envy" looking at everyone's bigger toys unless you can either afford to upgrade with no problem, or the types of jobs you are doing now demand it.
    The next thing I like to tell them is you are going to get a lot of advice (and a lot of different opinions) about the effect of getting more rpms to spin the blower, or adjusting your vacuum relief valve from 12" to 14" or even higher. Both of those things will give you more vacuum - but you have to measure that against the cost - wear and tear on the engine and the rest of your machine. Asking others with truckmounts here is a reasonable way to get some good input on that, then balance that with what engineers and tech support at HydraMaster have to say. Like I said, opinions differ even within our team.
    Previous posters are right in that the Boxxer 323 did come with a bigger engine (23HP vs 18HP) . However, even without talking to the Engineers, I am sure that it is more complicated than just swapping from the smaller blower to the larger one. Not sure about footprint, but the plumbing may be a lot different too. I will ask the people at HydraMaster who are much smarter and wiser than me about these things on Monday.
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  17. Bob Savage
    Bob Savage

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    It's really quite simple. Here's what I did.

    I ran two 2" hoses from the blower to the recovery tank ( 2" X 2" X 2.5 cast iron T). Each 2" hose going to the tank has two 3" filters (T) inside the tank (equals four 3" filters) (enables me to run a #45 blower for dual wands).

    RPM on the Honda motor (GX-670) is set to 3000 RPM (good power curve at this RPM while saving fuel), with a 6" pulley on the Honda and a 5" pulley on the blower, and a Motion Industries tensioner pulley. Larger pulleys equal more contact area for the single "B" belt. Belt will last for a few thousand hours.

    Increased the blower silencer from 1.5"to 4" to reduce any significant back pressure. Use LP for heat so no HX in the blower discharge or anywhere else for that matter.

    Finally, added a controlled air leak in the vacuum system to eliminate lock-down and increase the vacuum which translates to faster drying fabrics.

    Phenomenal increase in vacuum power for very little cost and simple modifications.
    Last edited: Apr 14, 2018
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  18. steve_64
    steve_64

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    Just get another setup with a 56 or 59 blower and be done with it if you feel the need for more vac.
  19. SamIam
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    How’s your 4.7 butler?
  20. Sierra Clean Care
    Sierra Clean Care

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    AND, keep your blower filters clean, and STOP ANY AIR LEAKS FROM THE HEAD OF YOUR WAND, ALL THE WAY TO THE INTAKE PORT ON YOUR TM.... a guy would be surprised at how much suction he’s losing by not...... ive got an OCD when it comes to vac flow..... fook, I even clean my blower filters with an old sonic toothbrush.....
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