correct angle for a drive shaft with 2 joints

[Mitch]

Bob if you read post 12 you could have saved the typing cramps

[WESTERNAERO]

Micheal, when you get closer to putting this back together would you like me to make you something like the pic. I'll make a generic drawing, you plug it the numbers and I'll redraw it with your numbers. It might give you a better understanding if you are looking at it on paper. There are a lot more dimensions needed than the pic, that's just an example. Then you and Joe can go over it together and make adjustments where you need them.

[ogshotgun]

Micheal, when you get closer to putting this back together would you like me to make you something like the pic. I'll make a generic drawing, you plug it the numbers and I'll redraw it with your numbers. It might give you a better understanding if you are looking at it on paper. There are a lot more dimensions needed than the pic, that's just an example. Then you and Joe can go over it together and make adjustments where you need them.

yes ill get you the dimensions i have and well go from there thank you

[gn7]

Bob if you read post 12 you could have saved the typing cramps

That's my point. The angle on the drive shaft is set in stone, unless he moves something.
What was the point of saying his v drive might lean forward 2*. How would he go about changing that. By relocating the strut or changing the prop shaft angle? By changing the v drive angle to an 8* from a 10? or a 10* from a 12 which ever the case may be?

From the time I started rigging my boat, until I was setting the engine and making plates, I never gave a thought to the drive shaft or u joint angles. Why would I?
It the boat isn't currently rigged, then you just rig it. Period. Worry about the drive shaft and U joints angle when you get there.

Curious. You say the strut isn't set. Is the shaft hole plugged? Or is he willing to fill it if he moves the strut or angle?
If the hole is filled, you know why nobody asks where the hole goes? Yep, it goes where the shaft would hit the boat. Drive shaft angle is pretty much the same.
U joint angle is a little different, but you deal with that when you get there.


OR ..... as I asked, is he considering rigging this boat around a drive shaft angle and that's why the question is being ask.

[Mitch]

After talking to him he said the strut is in the same location and angle as before no v drive holes in the new stringers he stated the the v drive leanned 2 degrees forward I told told him drill new holes and put it exactly were it was before. Line it back up with the shaft is all you can do .

[gn7]

You line it up and drill the holes. I would clamp the stringer mounts with C clamps, Stanley One Handed Squeeze clamps, what ever, and check the alignment by pulling the prop shaft and in and out of the coupler. Strut bushing needs to be in pretty good condition. But you are right, the V drive goes back exactly the way it came out. Unless it was wrong to start with, which I doubt.

[ogshotgun]

You line it up and drill the holes. I would clamp the stringer mounts with C clamps, Stanley One Handed Squeeze clamps, what ever, and check the alignment by pulling the prop shaft and in and out of the coupler. Strut bushing needs to be in pretty good condition. But you are right, the V drive goes back exactly the way it came out. Unless it was wrong to start with, which I doubt.

yes brand new bushings and that is how it will be set , i was thinking of leveling the motor out a few degrees

[gn7]

yes brand new bushings and that is how it will be set , i was thinking of leveling the motor out a few degrees

If your strut is set, then your engine tilt is already cast in stone. You can move the engine up, down, forward or back, but the angle is a done deal.

Its this simple. Take the flywheel end and get it as close to the bottom of the boat that you dare. Put a magnetic bubble protractor, or incline meter/gauge/angle finder on the v drive input companion flange, and read the angle. Now put the angle finder on the flywheel and tilt the engine until they match. Done.

You can't get the engine low enough, and anything higher than necessary only adds angle to the u joints.

Its that easy.

[ogshotgun]

If your strut is set, then your engine tilt is already cast in stone. You can move the engine up, down, forward or back, but the angle is a done deal.

Its this simple. Take the flywheel end and get it as close to the bottom of the boat that you dare. Put a magnetic bubble protractor, or incline meter/gauge/angle finder on the v drive input companion flange, and read the angle. Now put the angle finder on the flywheel and tilt the engine until they match. Done.

You can't get the engine low enough, and anything higher than necessary only adds angle to the u joints.

Its that easy.

perfect thank you very much

[SnoC653]

That's my point. The angle on the drive shaft is set in stone, unless he moves something.
What was the point of saying his v drive might lean forward 2*. How would he go about changing that. By relocating the strut or changing the prop shaft angle? By changing the v drive angle to an 8* from a 10? or a 10* from a 12 which ever the case may be?

From the time I started rigging my boat, until I was setting the engine and making plates, I never gave a thought to the drive shaft or u joint angles. Why would I?
It the boat isn't currently rigged, then you just rig it. Period. Worry about the drive shaft and U joints angle when you get there.

Curious. You say the strut isn't set. Is the shaft hole plugged? Or is he willing to fill it if he moves the strut or angle?
If the hole is filled, you know why nobody asks where the hole goes? Yep, it goes where the shaft would hit the boat. Drive shaft angle is pretty much the same.
U joint angle is a little different, but you deal with that when you get there.


OR ..... as I asked, is he considering rigging this boat around a drive shaft angle and that's why the question is being ask.

He has said before that his strut is a 10* and his Vdrive is a 12*. If he changes to a 7 or 8* strut, that would put his Rewarders pointed almost up at the sky unless he changed Vdrives too.

It always amazes me when someone gets a boat to work and then they take it apart and don't record where everything was at before hand. Hopefully, he measured the angles of the prop shaft and driveshaft before he took it all apart. It is possible that his 10* strut was sitting at 9 or maybe 8.5* depending on how they had it sitting. In one of his other posts he said he had this one taking a good set finally. If so, that is where he should put everything back, unless he is planning on buying some new hardware (strut, v-drive, engine plates, possibly a shaft log).