What motor size can i use ?

[cadeco]

Originally Posted by hermco

Get a bracket designed for a 20" shaft motor. The bracket geometry/design determines the shaft length of the motor. Most are designed for 25" shaft length motors. You might be able to use some brackets designed for 25" shaft motors with a 20" shaft motor if you can mount the bracket low enough. Depends on the brackets design.

Thanks for the input, but the idea is this : Since using a 25" motor on a normal ( made for a 25 ") bracket, the 25" motor must be raised, using a 20" motor on that bracket would be ok and the 20" would not need to be raised-- correct?--
If i use a normal 25" bracket today and latter i change the motor , the only thing to do would be to raise that (new 25") motor instead of buying a new bracket. If i have to use a 20" bracket there will be no deal!--Someone says to install a extension (if does not work), but the cost of the extension will offset any gains on the 20" motor's price.
Again thanks! think about and tell me where i'm wrong ( if i am).