I am trying to install a brushless motor into the nose of a glider that was not originally designed for a motor. The plane's fuse is quite narrow at the front, so it is difficult to get the motor to fit. I already have the motor, so I'd prefer to not buy a new one.
If the motor shaft was a little longer, I could get it to work. I have a small metal lathe, so I could easily either make new, longer shaft for the motor out of piano wire, or I could make an extension that clamps onto the existing shaft. Making a new shaft seems easier, lighter and more reliable.
As an alternative to making something, are there any commercially available methods to solve this problem?
How far can the shaft be extended before I have to add a support bearing close to the propeller?