Large volume pumps 8 and 10gpm, gun washing, hose and gun volumes to reduce hand vibration, larger flow, etc

Just for reference 5.5gpm is the sweet spot for fences and decks since you mentioned you do a lot of those. Wouldn’t even consider the 10 unless you were doing a lot of large concrete jobs.

Hi rick thanks. Is that because of the wear and tear on hands from 8.5? With #15 dang cleans so great, 8 gal at guessing 1500 psi,
The 4gpm seems so slow now, but…huge factor…is no hand pain. So there’s that.

Mainly because don’t really need so much water. Plus the few guys I know that do nothing but wood that’s what they use and they can afford whatever they wanted.

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You keep it down over there, go figure out your surface cleaner. If @dperez can figure it out then anyone can lol.

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We dont either, I meant you DS injector. Yeah and get that mosmatic swivel off dultimeyer, its a life saver, I won’t run without one. The suttner 2315 is on there as well.

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I am confused. Your hands can’t handle the 8 so you believe a 10 will make life easier?

Get a 5.5.

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Your fallin on def ears here , this is 8gpm country, We’re a dying breed buddy.

Yes zk1 is great I just upgraded from pressure trapping. Sounds like your K7 is messed up. Also mosmatic swivel a must! Cbd cream for your hands helps and so does kratom for overall pain. Most guys softwash but still use 1200 psi to rinse fences. #20 tip is my favorite!

Hmm, 20/20 hindsight, ugh. I gonna make this 8 work if it kills me! I am gonna throw good money after bad money! A 5.5 sounds nice, ha.

My theory on the 10 is that the water volume up and psi down and motor being in proportion smaller relative to 10 instead of 8, would decrease power vibration? I don’t know. And, I switch out a pulley, change ratio, I have 4 extra various big pulley wheels around, and I let the motor work harder, reduce throttle, but get 10 gpm from pump, but at lower psi? Ok, I am going to have to look into this.
It’s because long ago I had a 13 hp honda on a 8 gmp cat pump for cedar shake roof cleaning. It got about 1900 psi at unloader. A tank of gas 1.5 hours. It worked great on wood, and wasn’t really different on hands than the 13hp 4 gpm machine, tank of gas same motor, 2.5 hours. See, so kind of like, making pump bigger for engine, maybe will actually make it a little more gentle? (I realize this could be wrong, I already have the general 10.2 in box paid for, I could test this out though.) Maybe with ratio change, the motor runs lower throttle, but I try get most gpm from 10 pump, and let the psi go down, which I don’t care about high psi for wood cleaning. What do you think of this? I may be miscalculating and the 10 pump would lose gal per minute, I have to figure this out more how this works. ow my head is starting to hurt. I am trying to save the 24 hp honda in the equation, since I bought it, right, and gentle it all down some with 10 pump, sacrificing psi, but having the high gpm.?

I think your the only one on this forum of what ? 12,000 or more members who doesn’t, Im a truck washer and we don’t carry any SH on our job and never use it and I’ve actually have done it to wash my own house, Oh and a beer store, but so far thats it.
Its a tool to make money to survive and yes SH is corrosive and yes Truck chems are corrosive but so is a big mac with special sauce, lettuce, cheese, pickles, onions on a sesame seed bun , But it takes a while to kill ya.

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2020 hindsight, kinda regret having the 24hp, shoulda got 20 most, but that was how skid came.
I had started out to build my own, that’s why i have the 10 gpm in box. I have another bare skid plate, 4 huge pulleys prob wrong ones. the idea of using different pulleys, run 24hp at half throttle on 8 or 10 pump, to make it be like I am running an 18 hp on 8 or 10 pump? I don’t know if this is how this works. can i lower psi but keep high volume like this way?

never mind the 10 idea, holy smokes, I took of pulley shield to start looking at pump swap, that looks harder than I thought. getting to the pump bolts, take off belts and pulleys to take off shield, then if i get it mostly back together, how you sposed to tension belts on if you can’t get to the back side pump bolts on skid(tighten from bottom of skid?) , looks kind difficult huh. ok, thanks guys, I will try the mosmatic swivel and 2315 gun and change out k73 unoader for zk1, maybe I will just try lowering throttle down too, cleaning decks and fences doesn’t need all that 24hp 8.5gpm

Throttle is meant to be WOT on air cooled engines. I would find a local vendor or contractor to help you out before you do anything else.

You’re making things more difficult than you need to. Leave everything on the trailer, unreel water supply hose and hook to spigot, unreel pressure hose, downstream SH, and rinse. All that takes an hour or two and you’re off to the next house. The SH percentage in a house wash mix is so low it doesn’t hurt the hose and gun especially cause it gets flushed right away with clean water while rinsing. That’s why you get the gun with the ceramic ball. Get a High Draw injector too.

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Glad you’re jumping in and getting involved on the forum.
But you need to do a lot more reading on here, and be careful about giving advice at this point.

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Thanks qons for feedback.

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Did not read all the comments but if the area for your hand is wide enough I always jam a tennis ball in there to keep the handle depressed. Just have to keep the wand moving to avoid stop lines.

Thanks That1dude, appreciate it.
I have been designing a system/gun/wand build idea, from ideas everyone has chimed in to help me, so thanks. I need to upload a pic or two.

I can give an update after I change out a bunch of stuff, and I am curious to compare which parts make what difference in gun vibration. I ordered the zk1 unloader to replace the k73, hoping that was part of problem with vibration, not sure. I got the zk1 with the 1/2 outlet instead of the 3/8 outlet one, the k73 had 3/8 out. I got a 1/2 inch whip line with 1/2 fittings, a new pump reel with 1/2 in and out, old one has 3/8, and I got 3 sections 1/2 inch hose with 1/2 connectors/fittings. And the 2315 gun everyone was recommending, hopefully all this will add up to help make a difference. Oh ya, ordered the 53gpm gun too, the vendor sent a pic of it next to regular gun, it is quite larger and heavier too. It has 1/2 in and 1/2 out fittings, instead of 3/8 in and 1/4 out. I ordered a bunch of fittings to extend 1/2 then 3/8 then 1/4 for nozzle coupler. Maybe will absorb or dampen vibration a little, anyways, it looked good being bigger, I am big. Maybe all the extra weight of hose and gun will help dampen vibration, not sure.
I will know after I hook everything up, and then the new design stuff I made for lance/wand I am hopeful will help, even though I will have to adapt to not having gun trigger in one of my designs, though the trigger will be optional.

So, this is beginning of design, flat gun, ball valve, for option to velcro handle.

A 2315 gun and a swivel built into your hose will eliminate all that mess you have there