Hello from a new guy with a stringer question

[chconger]

Re: Hello from a new guy with a stringer question

........How can I run bolts through the stringer and keep the water out? I was thinking about drilling an oversized hole though it, then using epoxy to glue in a sleeve of maybe aluminum or stainless. This would keep the bolt assembly from creating too much pressure and squeezing the stringer too much.

That's the way to go! Always assume water will follow fasteners, and protect accordingly.

 

[RacinRob]

Re: Hello from a new guy with a stringer question

Ok, I'd say there's nothing wrong with your thinking. What size are the bolts currently used? I'd overdrill as you propose and then mount the system with the inserts and use PB to fill around the inserts to ensure proper alignment. Hope that makes sense.

Are you saying nutserts and not through bolting? The bolts are 3/8x?? Maybe 18. I did not look that close at the threads. I would have to place the inserts in the stringer with PB and tighten down the pylon assembly to insure it is aligned. I don't think the insert would pull out since it would pull against the metal plate if that makes sense. Then after it is set I could pull the bolts if I ever wanted or needed too. If it is though bolted I can't unbolt with out ripping out the floor. I've used the nutserts in a couple race car engine applications, but never in fiberglass and resin. I did use them once on a jet ski ride plate and they held fine, but they did not have a skier pulling with who knows how much force. Sorry I ramble sometimes.

 

[RacinRob]

Re: Hello from a new guy with a stringer question

I just read your PVC edit part. I like the PVC part if the bolts are a tight fit in the pipe. Otherwise it make walk a bit. I'm going to use PVC at the rear of the boat for going through the stringer as a drain from the outside cavity to the bilge area.

Now I'm confusing myself. I was talking about the nutserts for the motor mounts, not the pylon. I need to wake up.

 

[Woodonglass]

Re: Hello from a new guy with a stringer question

Yep I believe that 1/2" pvc has a 3/8" Inside diameter and would make a great "Sleeve Insert" for your bolts. Once they are in the stringer and PB'd in place water won't ever be able to penetrate to the wood interior of the stringer from that vantage point again. As an added preventative measure I'd coat em with 3M 4200 at the time of install as well. Sand that mount down well and then put a couple of coats of Rusoleum Primer on it and then 2-3 coats of the Rustoleum Pro Oil based paint and she'll be good to go.

 

[RacinRob]

Re: Hello from a new guy with a stringer question

I'm going to bead blast or sand blast all the rust and paint off the pylon and start over? What do you think about the Motor mount lag bolts?

Water line dimensions are inside diameter, so 1/2" is 1/2".

 

[Woodonglass]

Re: Hello from a new guy with a stringer question

I've seen some guys embed nuts into their motor mounts so they can use regular bolts instead of lag screws. I'm NOT an I/O guy so not speaking from experience, but I really don't like lag bolts much so I'd try and come up with some sort of alternative other that using them.

 

[RacinRob]

Re: Hello from a new guy with a stringer question

I've seen some guys embed nuts into their motor mounts so they can use regular bolts instead of lag screws. I'm NOT an I/O guy so not speaking from experience, but I really don't like lag bolts much so I'd try and come up with some sort of alternative other that using them.

Agreed. Something like this in brass maybe. I just wonder about the upward load capacity once epoxied in. Should work.

Nutserts

The ones I've used before are thread on the outside too. Sort of like a heli coil, but solid. Epoxy and thread into mount.

 

[jbcurt00]

Re: Hello from a new guy with a stringer question

I think some have overcome the aversion to lag bolts by creating a motor mount 'shelf' that then allows the use of bolts & nuts instead.

Something like these:

Box joint, double layer 3/4" ply w/ substantial glass work

 

[Woodonglass]

Re: Hello from a new guy with a stringer question

You could use those but just as easy to use the nuts themselves...something like this...

Just drill a hole about the size of the nut then use a chisel to square it out a bit then epoxy the nut in. JBC's pics are exactly what I was thinking of for motor mounts to accommodate this type of system.

 

[HiltonFerg]

Re: Hello from a new guy with a stringer question

I just found this thread. It made me look back at my thread. Good luck with the project. These boats are a LOT of fun!

I'm still around, you can PM me if you have any Brendella specific questions.

 

[RacinRob]

Re: Hello from a new guy with a stringer question

I just found this thread. It made me look back at my thread. Good luck with the project. These boats are a LOT of fun!

I'm still around, you can PM me if you have any Brendella specific questions.

Thanks. I've had mine for 12-13 yrs and have loved it. Every one I take out loves it too. Have you done the interior yet? If you would like, I can trace out the seat patterns from mine so you can build it the way it came from the factory. I have the side panels, storage area under them, everything that the boat had new. It's all out right now, but should go back in the next couple months. I can trace patterns before installation since I'm building new wood pieces all around.