FJ Cruisers of Northern California

On Board Hot Shower

Well after many years of wanting to build my own OBHS heat exchanger i finally did.As i found out it was alot harder then i anticipated.After many designs in my head and on paper and after building 6 prototypes and testing.I setteled on one that i was really happy with.As i found out real soon copper is really expensive :( But the results are well worth it for me.The heat exchanger is made out of 2" copper tubbing and is 12" long and has 20' of tubbing inside the 2" tube.The water has to pass 3 times inside the 2" copper tube before it goes out to the shower head.That is only running the water thru the heat exchanger only once.I spliced the OBHS exchanger using the bottom hose coming out of the FJ heater.The OBHS exchanger heats supply water 59F up to 120F with the FJ at only 1500rpm.Still working on a flip up shower arm from my ARB bumper.Let me know what you guy's think

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OBHS1.jpg, 1.2 MB
OBHS2.jpg, 775 KB

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Permalink Reply by paraextreme on March 15, 2012 at 11:55am

Thanks Dom :) I had fun at Hollister Hills that day.we need to try and go more often

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Permalink Reply by The Josh on March 16, 2012 at 8:08pm

what is the address of the meeting point?

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Permalink Reply by Sonof40 on March 16, 2012 at 9:01pm

1924 Willow Street
Alameda CA, 94501

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Permalink Reply by manoweb on March 16, 2012 at 9:24pm

Will you also be there? I need an advice for the drawers in the cargo area!

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Permalink Reply by Bz on March 17, 2012 at 7:53pm

the gate to get in is at 2100 Clement Ave. Alameda, Ca

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Permalink Reply by RJAMSOIL on March 17, 2012 at 11:33pm

i might swing by i wanna see how this all works

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Permalink Reply by paraextreme on March 18, 2012 at 6:29pm

I had fun seeing you guys today. And thanks manoweb for going and letting me test both hot shower units.also don't wait to long to see what that oil is leaking from.look forward to taking to you guys soon.

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Permalink Reply by manoweb on March 18, 2012 at 8:18pm

Oh yes, I have few projects going on but I will take a look at the shower (used to be much hotter than that) and at the leak. In fact I will need to clean the engine throughly.

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Permalink Reply by Cowboy on March 18, 2012 at 6:32pm

Good to see everyone today. Those shower set ups are super nice!

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Permalink Reply by NestahEdition on March 18, 2012 at 6:48pm

X2.

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Permalink Reply by paraextreme on March 18, 2012 at 8:31pm

Let me know if you guys are doing anything on Thursday or Fridays for the rest of the month.i have those days off and would look forward to any trips to Hollister Hills or mod days and hanging out for the day.