Just dragging this thread along- hope you guys don't mind.
Well, I'm still considering a flex five and am having a hard time finding any owner unhappy with their choice. The original poster in this thread bought a flex5 five brush last year and I spoke with him on the phone. He is happy with his choice and istobal customer service. My friend bought his two Flex 5 three brush units back in December and he still loves them. They are impressive machines to watch when set up right. It operates smoothly and the cars are coming out looking great.
As mentioned earlier in this thread I still think the guide rails are too small. I saw a near collision with a tire brush from Grandma, and the rails are so small that trucks with larger tires might not even know they're on them or over them. I think Mac puts down reflectors, I might consider those plastic bumper blocks that some have used in the bays if I go with the high pressure wheel blaster option..
As far as throughput- it appears the five brush unit cuts around 90 seconds off the time vs. the three brush unit by negating the need for a second brush pass with different brush angles. If throughput becomes an issue Istobal offers the ability to field convert the three brush flex five machine to a five brush unit. Not sure how much that would cost but my guess is probably around 20-25K. The profiling onboards take blowers right at 2 minutes vs. only 1 minute for a standalone but as we know standalones require the driver to drive through correctly to get a good car. Although slower than I like , the profiling onboards produced a very good car.
My biggest reservation is lack of a local tech. My distributor is 3.5 hours away, but where I'm at that is a problem with most brands- Only Ryko and MarkVII have techs in my area. Factory support is there if needed contrary to what I've heard. I would likely buy the most common repair parts and stock on the shelf because this is a decent volume site and I have kept downtime to a minimum on my other units. I'm just getting to that stage in life where I wouldn't mind paying someone to work on things every now and then, and my distributor has zone charge
fees of several hundred dollars due to the drive, plus same day or even next day service is not likely.
Bottom line, I think the final product a car wash customer would get out of this unit would rival or surpass most express tunnels in both cleanliness, dryness, and gloss.