AC motor question

[earhtmother]

Are all the AC interchangeable or do they change size at some point? How do I tell what size a motor on its own is?

 

[coralbandit]

The 20 ,30 ,50 and 70 use the same motor but each has a different impeller.
This is where I get many of my parts from;
Aquaclear Filter Parts

 

[earhtmother]

Thanks Coral since I've never owned any larger the 300/70 I am hoing with

 

[earhtmother]

Arrrgghh
I am going with this motor will fit any of my bodies as long as I check the jumber of dins on the impeller for strength

 

[earhtmother]

Never post when tired ?

 

[coralbandit]

The motor will not come with impeller .
You can use any of the impeller in any of the same motors like 20-70.
They will just have a different number of fins and different sizes.
Most try to slow down the larger units like placing a 30 impeller in a 50 filter..
I think going the other way could cause issues?

 

[earhtmother]

Sounds like I'll be picture surfing