Bearing type Shaft Log Seal

[sangerdan]

The shaft is centerless ground, to be out of balance either the material would have to be not homogeneous or the taper machined out of concentricity to the body of the shaft. The keyways should be 180 to each other so they would offset each other. Not straight is not out of balance so if your shaft is somehow found to be out of balance I would throw it away as there is a serious issue. Your coupler is probably more of a balance issue if you have the garden variety coupler. I was surprised when I suggested splines on the shaft and prop on the other thread that I wasn't tarred and feathered, but I too would like to if anyone has pursued it.

[2manymustangs]

The shaft is centerless ground, to be out of balance either the material would have to be not homogeneous or the taper machined out of concentricity to the body of the shaft. The keyways should be 180 to each other so they would offset each other. Not straight is not out of balance so if your shaft is somehow found to be out of balance I would throw it away as there is a serious issue. Your coupler is probably more of a balance issue if you have the garden variety coupler. I was surprised when I suggested splines on the shaft and prop on the other thread that I wasn't tarred and feathered, but I too would like to if anyone has pursued it.

You may see someone tinkering with it soon on a heavy boat that is rough/tough enuff to bust up a shaft/strut/coupler... Thats all Im gonna say about that...

[Reservoir Dog]

So I have a question. Why don't they spline the coupler, prop shaft, and v-drive box out put shaft. I had a master craft and they had a splined prop and and prop shaft. This seem like it would be stronger in most all aspects

[sangerdan]

The easy answer is you really cant use a pinch type coupler and splines and get it to tighten. It cant squeeze because it would only pull where the pinch bolts are until it took up the clearance in the adjacent splines and not pull on the full circumference. There is so much we do on these boats that is stuck in very old technologies. Some work very well and some not so much. To spline the v-drive box end of the prop shaft would require a lot more redesigned parts and probably little to gain. If the work is PROPERLY done the current setup on the box end is fairly reliable.

[sangermike]

I use one on my sanger mini and its great i just dump the water from the vdrive out the shaft log and don't have to worry about weed clogging the vdrive pick up and burning out the old style that required water to cool

[Dimarco21]

Gotta come over here more, just saw this. Thank you for the kind words on my parts!!!

All our parts can be seen here.......... http://www.d21ent.com/Default.asp

Thanks again, Phil

[2manymustangs]

Gotta come over here more, just saw this. Thank you for the kind words on my parts!!!

All our parts can be seen here.......... http://www.d21ent.com/Default.asp

Thanks again, Phil

Welcome Phil... Stick around and tell us a story...