Mp40 wet side spinning

[CWalters]

Tried the other day when I first got it and figured it was spinning because I didn’t have the proper spacer on. Put the spacer on today and it still spins. Spins so fast it yeets itself off of the glass. When I take it out of the water and connect the 2 they are just fine. Any ideas?

 

[CBonito]

Is the magnet swollen at all? Do you clean it with vinegar? I guess a lot of people ruined theirs that way and the same thing happens. Take it apart and look for any deformities.

 

[CWalters]

Is the magnet swollen at all? Do you clean it with vinegar? I guess a lot of people ruined theirs that way and the same thing happens. Take it apart and look for any deformities.

Oof. She’s toast

 

[CWalters]

Assuming that little bit would cause it?

 

[Sisterlimonpot]

That's an unfortunate reality for these pumps.

People say that vinegar is the reason for these to swell up. But I have an alternate theory.

These neodymium magnets are extremely brittle and they're encased in a relatively thin barrier of plastic.

When we clean these things we don't consider the strength of the magnet and we often times allow them to slam down onto a metal surface like a sink. All it takes is for the force to be strong enough to crack that magnet and in turn create a small fracture in the plastic that allows water to make contact with the magnet. After that, it's game over.

I have conditioned myself to be extremely mindful of this when cleaning my wetsides with vinegar, after 2 years of this, I have yet to have a swollen magnet. Knock on wood.

 

[CBonito]

Assuming that little bit would cause it?

yup!

 

[CBonito]

That's an unfortunate reality for these pumps.

People say that vinegar is the reason for these to swell up. But I have an alternate theory.

These neodymium magnets are extremely brittle and they're encased in a relatively thin barrier of plastic.

When we clean these things we don't consider the strength of the magnet and we often times allow them to slam down onto a metal surface like a sink. All it takes is for the force to be strong enough to crack that magnet and in turn create a small fracture in the plastic that allows water to make contact with the magnet. After that, it's game over.

I have conditioned myself to be extremely mindful of this when cleaning my wetsides with vinegar, after 2 years of this, I have yet to have a swollen magnet. Knock on wood.

I honestly don't know how it happens. You could be right. But saltwater getting to the magnet is definitely what does this.