Prop Shaft

[ogshotgun]

I just don't think it's necessary, especially if it's going to be digging into the shaft with screws. And really those set screws aren't going to do anything but slide if something does happen, unless there are flats or spotfaces cut into the side of the shaft. I'm sure you guys don't want to do that.

Kevin i have a ? on mine since the whirl away was installed its buttoned up pretty tight i don't have the room for a 1/2" wide split collar with a 1/4" both sides.. so my only option is to use what is pictured but much nicer its a 1" longer and it has holes drilled in left or right hand to lubricate the bearing it runs a 1/4" in front of the strut..the shop that makes these says to either use a drill and make a slight indention or mill a flat.. please let me know i have no option

[gn7]

Micheal, didn't you tell me that your prop shaft was rubbing on the shaft log at the top? This means your log is mounted too far forward or its the wrong one. I would be addressing that area when you put it back together, before you drill any holes in your new floors. Bet if you moved it back a bit to stop the rubbing you'd have room for a split collar.

It could just simply be bedded too low.

[gn7]

Bedded to low? How do you get any lower than the floor. lol
The way he was talking before I think his shaft log was too far forward.

Do come off like I have 'STUPID" written on my forehead???

If the fucking thing is sitting directly on the floor, it can be TOO LOW!!
Mine, and everyone I have set, is bedded in SeaGoin epoxy about 3/16 to 1/4 thick that seals it to the hull.

[gn7]

Somebody shit in your Cheerios this morning....
Do you see the "lol" after my comment Bob, settle down.
And by the way, the higher it sits the further forward it needs to go. The further forward it needs to go, the less room he has for a safety collar. Without being there and seeing what's going on, it sounds like it needs to be sucked to the floor and as far back as possible.
Here's a bunch of these so your day gets better.

If it is rubbing on the top of the log, it could just need to be raised a tad. If its bedded, you can even change the angle it sits at. No different that dry packing a light or flag pole. The Sea Goin under mine doesn't just act as a sealer/gasket, it allows the log angle to be tweeked small amount as well.

[ogshotgun]

Micheal, didn't you tell me that your prop shaft was rubbing on the shaft log at the top? This means your log is mounted too far forward or its the wrong one. I would be addressing that area when you put it back together, before you drill any holes in your new floors. Bet if you moved it back a bit to stop the rubbing you'd have room for a split collar.

its not the log or the wrong log i had about 4" when i bought the boat. added a real coupler that took a 1.5" more added a whirl away and that was another 2.250" which doesn't leave much left ...

[ogshotgun]

I understand all that. But he had his floors redone and there are no mounting holes for the log. He is thinking about how things were in his boat and all I'm saying is move it as far back as possible so he can put a safety collar in front of it. He just ordered a brand new aquamet shaft and he thinking about driving set screws in the side it. If it were mine, that shaft log would be getting moved back or find another one that would provide more clearance for a collar.

the spine of the boat is not redone so the shaft log hole and mounting holes and the strut and turning fin all have the existing holes thru the spine the floor and stringers were replaced..

[gn7]

What type of shaft seal are you using on the log?

[HotWater]

What type of shaft seal are you using on the log?

X2
I had this same problem of not enough room for a collar with a project boat I worked on. If you have a rubber hose connecting seal housing to log you can cut hose shorter and butt seal housing right up to log. Mine needed even more room and I faced the seal housing down shorting the housing. I could only use one clamp on that side but used a good T bolt clamp and it held fine.

[gn7]

X2
I had this same problem of not enough room for a collar with a project boat I worked on. If you have a rubber hose connecting seal housing to log you can cut hose shorter and butt seal housing right up to log. Mine needed even more room and I faced the seal housing down shorting the housing. I could only use one clamp on that side but used a good T bolt clamp and it held fine.

When I first built the GN, they had just passed a rule that you had to have a split 2 bolt steel safety collar in front of the log, as well as a safety collar in front of the strut. Personally I think the one in front of the log is near useless because the majority of the logs are not much more than glued to the floor. There is no stress on them, and they are just basically sitting on the floor held by bolts tapped into fiberglass. But everything helps.

I had about a 1/4" between the coupler and the shaft seal using a rope type seal. I got the log set DEAD NUTS to the shaft angle, shortened the hose to the minimum, slightly trim the face of the log, and replaced the rope seal with the single grease, trimmed the face of it slightly, and now there is 2 split collars with about a 1/8" between the seal and coupler ends.

Not only is the front side of the double seal longer, but look at the hose side!!

[HotWater]

When I first built the GN, they had just passed a rule that you had to have a split 2 bolt steel safety collar in front of the log, as well as a safety collar in front of the strut. Personally I think the one in front of the log is near useless because the majority of the logs are not much more than glued to the floor. There is no stress on them, and they are just basically sitting on the floor held by bolts tapped into fiberglass. But everything helps.

I had about a 1/4" between the coupler and the shaft seal using a rope type seal. I got the log set DEAD NUTS to the shaft angle, shortened the hose to the minimum, slightly trim the face of the log, and replaced the rope seal with the single grease, trimmed the face of it slightly, and now there is 2 split collars with about a 1/8" between the seal and coupler ends.

Not only is the front side of the double seal longer, but look at the hose side!!

Ha yeah, tapped fiberglass. That same project boat had the log attached like that with blind holes tapped into glass, half of which were stripped. Sitting still in the water it was fine but once you started driving it would leak like a sieve. I through drilled it and countersunk the bottom side of the boat, sealed it up and put in some appropriate ss hardware.