2 machines and buffering

Residential
1

I’ve been contemplating adding another machine to my trailer to make jobs faster to fit more in, issue is carrying water.

Am I wrong or is it impossible to not haul water and have two , say, 7gpm machines going?

I run a single axle trailer so my weight calculations say no more than 100gal water and at that I barely make it on some houses.

Now went comes to upgrade to tandem and bring water I might think at that point it wound just be best to have a while separate trailer vs just the upgrade and handle jobs separately.

2

It’s not possible to run one 7gpm machine on most houses without carrying water. Not sure what you’re question is here. If you’re running two of them, 100 gallons probably isn’t enough. For easy numbers, assume a spigot puts out 4 gpm. So if you’re running two machine, that’s using 14 gpm. You’re draining your tank at 10 gpm, so even filled to the top, you only have 10 minutes on both machines.

3

currently run one 7gpm without issue of I have at least 50 gallons with me. sometimes I’ll bring 100 but never have needed more.

question is I see people with rigs with 2 machines and maybe a 250 tank yet everyone says don’t drive with water. Just wondering how they are doing it without hauling like 200-300 gallons of water.

4

I carry about 100 gallons of water at all times, as soon as I get to the house I’ll dual feed the 225 gallon buffer tank, no problems with water……as long as I dual feed.

5

2 machines or 1?

I’ve run into a lot of houses lately that have the hoses seized to the bib.

6

2….yeah that sucks, I’ve come across this too from time to time. Two different metals fuse together and won’t budge. I usually hook into their hose.

7

What’s your hose inlet setup, 2 Hudson valves or something like that?

For me it wouldn’t mater since if I used 2 machines I have zero chance of over filling in my area.

8

Not a Hudson but yeah shutoff valve…..if using 2 machines I don’t believe I’ve ever had it stop filling.

9

I run a 8 and a 5. Starting the day with anything less than a 100 gallons and I’ll be waiting for water at some point during the day. And if we’re cleaning a lot of concrete, I need to start with even more (constantly on the trigger, no break for the water to catch-up).

10

We do it all the time. 225 buffer tank, drives empty. As soon as you pull up to job you hook up (double feed if is a big enough job). While you do walk arounds/taping/pictures/set up the tank fills up. Once you start washing the water will keep up. Unless you’re doing groundwork where you’re on the SC non-stop the lulls between trigger off/on will allow the tank to re-fill. This is with 2x8gpm machines on one truck. remember the more GPMS your machine has the faster you can move, so ultimately you SHOULD end up using the same total gallons as the guy using a single 4gpm machine.

If we’re doing large groundwork where you’re on trigger for long period of time we’re on hydrants.