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+--- Thread: CB goes in for annual physical with pictures (/showthread.php?tid=1122)
RE: CB goes in for annual physical with pictures - Frulk_imp - 03-23-2019
Lord Popgun, I'm familiar with the concept. I actually had considered wood and would have gone that way had I realized how darn heavy that iron is. But, by the time the galvanic corrosion is at the point where its a problem that trailer will be gone. At that point I'll pull the rails off the bottom and use the ramp for loading lawn equipment in the back of the truck (as none of that approaches 800 pounds like the bike and with me on it does)
RE: CB goes in for annual physical with pictures - clearviewx - 03-23-2019
(03-23-2019, 05:07 AM)Frulk_imp Wrote: Here you go. Very small and light unit. There's enough headroom that you can ride the bike in sitting on it.
![[Image: b494cca3c77ffbc2b0c430237050b435.jpg]](https://cb1100forum.net/forum/uploads/imp/201903/b494cca3c77ffbc2b0c430237050b435.jpg)
Thank you.
RE: CB goes in for annual physical with pictures - GoldOxide_imp - 03-23-2019
(03-23-2019, 06:26 AM)Frulk_imp Wrote: Lord Popgun, I'm familiar with the concept. I actually had considered wood and would have gone that way had I realized how darn heavy that iron is. But, by the time the galvanic corrosion is at the point where its a problem that trailer will be gone. At that point I'll pull the rails off the bottom and use the ramp for loading lawn equipment in the back of the truck (as none of that approaches 800 pounds like the bike and with me on it does)
Is corrosion even a thing in the desert states?
RE: CB goes in for annual physical with pictures - Lord Popgun - 03-23-2019
I’m guessing it isn’t to bad in the desert. Ever see the pics of all the old airplanes they keep out there. Its mind boggling.
Sorry Sir Frulk. Didn’t mean to insult your intelligence. I’ve just never heard it as bi-metal corrosion and thought maybe you hadn’t either.
RE: CB goes in for annual physical with pictures - GoldOxide_imp - 03-23-2019
RE bi-metal corrosion:
Depending on context, some people may refer to it as sacrificial anode protection. The sacrificial metal is more reactive, has more negative electro-potential than the metal it is protecting. Hence, the anode (one of the two dissimilar metals) is much more likely to corrode. However, I believe it has to be in the presence of an electrolyte like rain water and earth salts?
This is a reason why so many vehicle exhaust shields are found at road sides in the north and eastern states and provinces. The steel securing hardware did not fail, but the aluminum shield attached to the securing hardware corroded away.
RE: CB goes in for annual physical with pictures - rboe - 03-23-2019
I think I learned about it in A&P school as bi-metal corrosion. In the marine industry it's known as galvanic corrosion. I just could not remember the other term. Thanks for bringing it up.
RE: CB goes in for annual physical with pictures - GoldOxide_imp - 03-23-2019
Sounds like everybody is about on the same page.
RE: CB goes in for annual physical with pictures - Cormanus - 03-23-2019
Sacrificial anodes are used extensively in marine applications to stop engines and other fittings corroding rapidly. It always amazes me to see how much of an anode can vanish in a year.
RE: CB goes in for annual physical with pictures - GoldOxide_imp - 03-23-2019
I use to manage them on concrete freeway bridges, even try to slow the reaction with opposing current source power supplies. The truth of the matter is so much salt is poured on Canadian roads/bridges that anodes and power supplies cannot keep up. The steel re-bar ultimately expands and delaminates anyway. That is why modern re-bar is heavily epoxy coated in concrete road beds. This sounds like for the same reason on especially ocean faring marine applications.
RE: CB goes in for annual physical with pictures - Csory_imp - 03-23-2019
I'm with Rboe here: add an aluminum beam (either T or I) using rivets, or - even better - TIG welding it to the underside. If possible, use the same alloy as the original material is. That would take care of galvanic corrosion
