I’m piecing together my larger washer and am trying to decide between 10.2gpm @3000 or 8.5gpm at 3500. Assume a variety of tasks. Which one and why?
When you say larger washer do you mean a concrete machine or do you plan on washing houses with it too? If you want it to be versatile I’ll go with the 8, 10 is hard to downstream with and you’re on the verge of 1/2 hose & fittings =$$$
If you just want it for concrete and your engine is big enough go with all the gpm you can get
I adore my 8/3000 for residential housewashing and concrete. Now if you’re doing commercial, the other guys know better than me.
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Variety of tasks, you would take the 8 any day of the week. Large concrete and building washes with hydrants you would just skip the 8 and run with a 10. Its not really a matter of witch is better, more so what water supply you have available in your area of interest. Rarely do you see people on here running 10s, there’s a reason.
By larger machine, I mean that the other one on the trailer will be a 5 at 3500 as that’s all I can reasonably expect the engine to put out and live for a long time.
What will I be doing with it? While I am going to try to pick up more surface work, I still want to be able to wash houses, wood, ect in the event that the other machine goes down for any reason. I <3 redundancy.
The half inch hose doesn’t scare me, but the fact that down streaming could be difficult turns me off. Besides, I’m still going to be feeding the buffer (only 300 gallons) from a water hose primarily, so all things considered, 8.5 seems like the best bet. The more I think about it, I don’t really remember seeing any hot boxes that advertise over 10gpm, so there’s yet another reason to stick around in the under 10 land.
Hey on another note, has anyone else noticed that used small diesel engines are cheap right now? This machine will be powered by barely used 4 cylinder isuzu I picked up under 1500 bucks with a straight coupler as opposed to pulleys. I’ll be able to run it at the top of it’s torque curve, so I ought to see crazy good longevity before it needs to overhauled. The 5gpm is being pushed by a kubota 905 (3 cylinder) but I’m having to do some reduction via pulleys due to having to run it a little faster/harder than optimum efficiency would allow. I got the kubota for such a ridiculously low price in an auction light plant that I won’t even tell yall for fear that I won’t be believed.
1/2 hose will kill a strong mule
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