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Tunnel chemistry sequence

W

wchungz

New member
Hi Folks,
New to this forum and the car wash business. Im seeking advise re chemistry sequence. 90ft Tunnel running: high PH pre-soak, low PH Foam, then all brushes, city water(hard), graphene, drying agent, RO rinse, blowers and finally drying brushes. An associates recommended an additional low PH Foam between small side brushes and (top and full side) brushes. Any comments and recommendations. Thanks in advance. Warren
 
Most tunnels have a brush lube - or some detergent that either directly feeds the brushes or is foamed on the car right at the point of contact with the brush. This will generally be low or neutral pH and would be after the initial alkaline arch application. Is that what your associate is talking about? If that is the case, yes - brushes should be kept lubed for purposes of cleaning, lubricity and avoiding damage. I would never want all of my detergents applied at the first arch or two and then have brushes contacting the car with just a water feed - that’s old school. They need to be kept lubed at the point of contact.
 
not necessarily, i believe he is referring to extra low ph foam(again) before the top and full side brushes. that is what i am understanding. should i leave this sequence out(2nd low ph foam)? or leave as is? thanks
 
I see new tunnels do not appear to apply lubing solution to cloth and Foam material. Just foam on the car. In not other industry does "Foam" which contains a lot of air provide lubrication. In fact it is counter productive. Ca someone explain how foam is a better lubricant than just liquid?
 
Earl Weiss said:
I see new tunnels do not appear to apply lubing solution to cloth and Foam material. Just foam on the car. In not other industry does "Foam" which contains a lot of air provide lubrication. In fact it is counter productive. Ca someone explain how foam is a better lubricant than just liquid?Foam is not a better lubricant but it adheres to the car better than a liquid for of solution and will remain on the surface for a longer period of time while the car travels through the wash.
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Foam is not a better lubricant than liquid but it does adhere to the car better and will stay on the surface longer from the point of application as the car travels through the tunnel and through the friction components.
 
wchungz said:
not necessarily, i believe he is referring to extra low ph foam(again) before the top and full side brushes. that is what i am understanding. should i leave this sequence out(2nd low ph foam)? or leave as is? thanks
Click to expand...
Ok - if it’s an extra application maybe he believes it will aid in neutralizing your alkaline presoak detergents. If your cars are clean, shiny and dry without the recommended extra step, I do not see the need for it. Again, if the car has no detergent on it at this point, I would add something for the sake of brush lubrication, but that would be my only concern if all else is good.
 
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