Washing Bikes using Softener Salt Water
For about six months I've been washing my bikes using water generated from a pellet salt softener. I was wondering if this will harm the bikes in the long term as the frames and wheels are aluminum with a mix of carbon or aluminum stems and seat post. Groupsets are all mid range Shimano.
Should I switch over to using city supplied water or stick with the salt water? |
I don't think I'd use water with salt content in it to wash anything metal. (apart from silverware and other things I don't care about)
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Originally Posted by SpeedRanger
(Post 21770060)
For about six months I've been washing my bikes using water generated from a pellet salt softener. I was wondering if this will harm the bikes in the long term as the frames and wheels are aluminum with a mix of carbon or aluminum stems and seat post. Groupsets are all mid range Shimano.
Should I switch over to using city supplied water or stick with the salt water? |
Interesting information. And not just for bike washing. Thanks for the link!:)
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Your water softener doesn’t “add” salt to the water. The salt is used to cause a reaction with the ionized pellets in the system that extracts the calcium from the deposits from the limestone in the ground.
Your tap water is perfect for cleaning a bike. |
Copper is very sensitive to salt. So if there was any salt in your water you would have known by now.
A water conditioner that is backwashing and rinsing properly should produce water with zero salt in it. |
Originally Posted by SpeedRanger
(Post 21770060)
For about six months I've been washing my bikes using water generated from a pellet salt softener. I was wondering if this will harm the bikes in the long term as the frames and wheels are aluminum with a mix of carbon or aluminum stems and seat post. Groupsets are all mid range Shimano.
Should I switch over to using city supplied water or stick with the salt water? Magnesium and calcium are the problem. They interfere with detergents often causing the surfactant to crash out of solution which makes it ineffective as a cleaner. Ion exchange resins “exchange” two sodium for each magnesium or calcium in the carbonate resulting in a sodium carbonate. Sodium carbonate is “softer” because it doesn’t interfere with the surfactant. There isn’t any chloride present because the only thing exchanged was the sodium. Chloride is what does the damage to metal parts. It can react with iron and aluminum to make both iron and aluminum chloride. Both of those are less stable then the oxide of aluminum and iron which results in exchange of the chloride for oxygen and release of the chloride. The chloride is free to go back and pluck out more of the metal. Bottom line: It’s okay to wash your bike with softened water. If you want even more nerdy information, we humans can’t drink water with a lot of sodium chloride in it because it draws water out of our tissues and causes dehydration. (Cats can drink salt water because their kidneys filter out the salt.) We can tolerate a higher load of other kinds of salts like carbonates. |
Originally Posted by SpeedRanger
(Post 21770060)
For about six months I've been washing my bikes using water generated from a pellet salt softener. I was wondering if this will harm the bikes in the long term as the frames and wheels are aluminum with a mix of carbon or aluminum stems and seat post. Groupsets are all mid range Shimano.
Should I switch over to using city supplied water or stick with the salt water? |
I live in a hard water region -- Wisconsin is basically a layer cake of sandstone and limestone, and west of the continental divide we use well water. The house I live in was built in the early 60's and has 3 water supplies: Hard, soft, and hot. Soft water feeds the hot water heater, wash machine, and a few other things. Cold tap water is hard. The outside faucets are hard water. The idea is that softened water isn't harmful, but watering your lawn with it is wasteful. Because the house was modified since it was built, you actually have to follow the pipes to figure out which is which.
Hard water has two main effects. When heated, it comes out of solution, which means it will build up in your hot water heater over time. You'll also see it in the bottom of your tea kettle. It also reacts with soap to form soap scum. Having gotten sick of scrubbing the shower and bath tub, I banned soap in my house, and we use liquid body wash, which doesn't contain soap. |
Thanks for the replies, I'll stick with using the softner water. Now the wife is mad at me for being more concerned about washing the bikes than drinking the stuff.
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