first of all abyc is full of shit .0005 is max fit over (BEARING FIT) and any drive shaft should be keyed with 2 set screws one on the key and 1 at 90 degrees.
For drive applications it should be size for size and the coupling heated shrink fit
If the shaft is fitted with a key and Loctite Stud & Bearing Fit is used you won't have a problem. Personally I think that joining a shaft direct to what is basically a car engine is extremely crude but its a popular method on US built ski boats. Over in Europe we have the Vetus Bullflex and also the "Aquadrive" coupling. With the latter sixteen degrees of misalignment can be tolerated. Note that where a boat has a long shaft, in water and out of water alignments may differ. (hull bends!)
first of all abyc is full of shit .0005 is max fit over (BEARING FIT) and any drive shaft should be keyed with 2 set screws one on the key and 1 at 90 degrees.
For drive applications it should be size for size and the coupling heated shrink fit
good for life.
mechone1 3 months ago
If the shaft is fitted with a key and Loctite Stud & Bearing Fit is used you won't have a problem. Personally I think that joining a shaft direct to what is basically a car engine is extremely crude but its a popular method on US built ski boats. Over in Europe we have the Vetus Bullflex and also the "Aquadrive" coupling. With the latter sixteen degrees of misalignment can be tolerated. Note that where a boat has a long shaft, in water and out of water alignments may differ. (hull bends!)
techdavey1000 4 months ago
They are supposed to have a key, With the key it shouldn't really spin at all.
zachsace 10 months ago