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| How do the 8 lag bolts in the stringe... |
| Author |
Message |
    
jeff pinto
Member
Username: searay57
Post Number: 44
Registered: 01-2006
| | Posted on Sunday, April 27, 2008 - 01:26 pm: | 
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My question is just for my own knowledge. I know it is enough to do the job, but it seems like the prop should push the lags right out trying to propel a 10,000 lbs boat. if anyone has an explination please let me know. |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 4334
Registered: 09-2003
| | Posted on Sunday, April 27, 2008 - 07:12 pm: |
|
It's a Bayliner, right? They, ah, tend to do things....differently.
Jeff |
jeff pinto
Member
Username: searay57
Post Number: 45
Registered: 01-2006
| | Posted on Sunday, April 27, 2008 - 08:46 pm: |
|
no, searay. but every setup i have seen is held in with lag bolts. |
Rick Sweeten
Senior Member
Username: linesix
Post Number: 1184
Registered: 11-2002
| | Posted on Sunday, April 27, 2008 - 10:06 pm: |
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Are you sure they are lag bolts or are they machine bolts screwed into a piece of drilled and tapped aluminum or steel laminated into the stringer?
Many manufacturers do that, but most mount the engines on engine mount brackets which are through bolted to the stringer system. A lot of I/Os are lag bolted, but in their case the thrust from the prop is not pushing on the mounts, rather the transom. |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 4338
Registered: 09-2003
| | Posted on Monday, April 28, 2008 - 07:19 am: |
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Good point, Rick. In fact, ALL I/Os are setup that way, hence the splines in the drive shaft yokes. Straight inboards, by contrast, ALWAYS have the motors absorbing the thrust.
Jeff
PS: In my aluminum boat, the mounts are through bolted to the stringers. |
jeff pinto
Member
Username: searay57
Post Number: 46
Registered: 01-2006
| | Posted on Monday, April 28, 2008 - 11:24 am: |
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they are lag bolts. i understand how it works on i/o the thrust is pushing on the transom. if you look in the crusader installation manual it recommended good lag bolts to transfer the thrust. |
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