810f250
Griffs Services PowerWash
If I was guessing, I would also guess 1/2" or larger pressure hose.
Look at the fire hose feeding the tank, probably use that to rinse when done also, sure would be a lot faster than a wand.
I would just connect the 2 20" surface cleaners together like they did the big ones inthe picture and get a smaller one for the back, maybe a 12" or 16" but you would need to connect a couple of your machines together to make it work.
I was thinking something similar but using 2 of the 20" spray bars and 1 12" bar in the back but all in an aluminum box, kind of like what Bob did when he built the 90" surface cleaner.
With 56" of cleaning path, that would be great, I am not sure if connecting both my 5.6 and 8gpm machines together would be enough to run it, maybe?
When you think about it, 4 to 5 gpm can run a 20" surface cleaner so in theory an 8gpm machine could run 2 of them so adding my 5.6gpm machine would be extra flow, even when adding the extra 12" spray bar in the back.
If I remember correctly, Steel Eagle would make the deck that would clean 40" wide but I do not know if it was one spray bar or a couple smaller spray bars, I will have to call my friend to get the details.
I think he told me that the deck would be less than $1200 which I think would be a great price considering the deck, spray bars, swivels, engineering, construction, etc...
The only concern I would have running your sizes, is if your machines are really pushing what they say they are, you may have to strobe the pump or tach the engine and then do the pump pulley rpm calculation, and make sure the rpm is accurate so you are outputing the advertised gpm. But the sizes you mentioned is ok