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04-14-2013, 03:10 PM
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#1
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Junior Member
Join Date: Apr 2013
Posts: 1
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electrolysis?
I have electrolysis all over my motorhome and no one knows how to stop or correct it please help.
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04-14-2013, 03:18 PM
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#2
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Pictures?
Brand of rig?
Type of siding?
Etc
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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04-14-2013, 04:09 PM
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#3
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Senior Member
iRV2 No Limits Club
Join Date: Nov 2010
Posts: 1,324
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You can prevent galvanic corrosion it several different ways: 1) don't mix metals 2) use an electtrical insualtor between the two metals 3) coat or paint the metal that is less resistant 4) avoid the contact of the two metals with an electrolite (like water) 5) use cathodic protection I have an aluminum frame in our trailer and a couple of ideas I am using aluminum fasteners when possible, but I am trying a couple of other methods and monitoring problems (none yet). Stainless steel, galvanized and using pipe dope on the fasteners.
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04-14-2013, 04:29 PM
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#4
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Senior Member
Join Date: Jun 2011
Location: FL
Posts: 11,441
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Plugged in? Under large power lines? Next to a radio station transmitter? Current must be flowing. Using free standing charger??
__________________
Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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04-14-2013, 07:30 PM
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#5
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,676
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And probably no or inadequate chassis ground.
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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04-14-2013, 07:41 PM
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#6
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Senior Member
Join Date: May 2005
Posts: 685
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Quote:
Originally Posted by aslovesoft
I have electrolysis all over my motorhome and no one knows how to stop or correct it please help.
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Who made this diagnosis? What are you seeing. Where is it occuring ?
__________________
04 Southwind 37C W22
DIY Rear Panhard Rod
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04-14-2013, 11:25 PM
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#7
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Senior Member
Join Date: Sep 2012
Location: Tasmania now, USA/Canada/Alaska in April
Posts: 2,473
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If it has a steel frame and aluminium cladding and they have neglected to follow basic isolation procedures, you may end up with corrosion and blistering of the paint for several inches around each fastener. As far as I know, there is no way to stop it short of removing the cladding and doing the job properly.
I have an MC8 and the previous owner - supposedly a coach builder - reclad it with aluminium instead of the original SS. He skimped on the installation in places - especially the door - and there is blistering under the paintwork in many places.
BTW contrary to popular belief, stainless steel is not immune to electrolysis problems and some grades are worse than others.
__________________
Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
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