Suggestions Fix (update)

[Luvit]

One of my seat posts have come loose, probably the offshore trips have taken its toll. It is a self draining deck and near impossible to get a spanner onto the bolts underneath, Little access.

My thoughts are to screw self tapping stainless screws around the base into the upright post and applying tefgel or similar to prevent electrolysis between the SS and aluminium. 

I would normally just replace things that are broken but not being able to remove the bases I'll have to repair it.  Any other suggestions on how to how best fix it in the most permanent and visually acceptable way?

[rayke1938]

Is the post loose in the base or the base loose where secured to the floor.

The base may just be secured to the floor with coarse thread wood type screws if that is the case just unscrew them and rotate the base and re screw and possibly drill the base and use more screws.

Try to contact the boat manufacturer for more info/advice if you have to move the base as you really need to know what is under the base as the floor material bay just be a thin layer of glass on ply and the ply possibly deteriorated due to water ingress.and then you have a major job.

Cheers

Ray

[Luvit]

Hi Ray,

The base is solid as, it's the post that has come loose. It is an expansion fit into the base and over time with the over weight deckies () rocking backwards and forwards it has loosened. I initially tried putting a lump of wood on the seat post and hitting it with a hammer and it tightened it up for only one trip.

This is a photo from an access hatch and the seat has reinforcing where it bolts through the deck. As you can see it long way back and even fully stretched I wont be able to reach the all the nuts with a spanner.

[ellicat]

[Luvit]

 

I thought I might get a few bites from the Deckie's. You took the bait.

That's what I take out when you're the deckie

 

[ellicat]

I only remember sitting very still on that seat.

[rayke1938]

Apart from the pk screws for visual appealing all I can think of is injecting some epoxy glue down the flutes and that may nor adhere due to oil etc in the base.

Maybe talk to Bipolar and see if it would be feasable to weld it without having problems with the heat,

 Seeing that Elicat did it he should do the honorable thing and buy you a new boat.

[Luvit]

I thought of Stu but I was guessing the pole would be to thin to weld and the heat may effect the fibreglass under the base.

thanks for the suggestions.

[rayke1938]

Only other thing that i can think of is to remove the existing upright and get some thicker wall tube for the upright and get it turned so its  c hair oversize and freeze it and then force it into the base.

Any mates with a machine shop?

 Cheers

Ray

[aussie123]

That is a dodgy setup to begin with.It should be pressed into the base plate and then welded.

Have a chat to Stu about getting some spot welds around it.

 

[rayke1938]

 

Another alternative is to have a talk to Lance about something similar to this,

Remove your existing post and trim the base with an angle grinder so that you can drill and tap the existing base and screw the new assembly to it or if the metal on existing base too thin long coach screws to attach new assembly/

Cheers

Ray

If its only for Elicat a milk crate will do him.

 

 

40CM COLUMBIA PEDESTAL + TOP

Boating Shop / Seats And Pedestals / Seat Bases

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Product Details

 

Product ID V2-293772 Vendor: reeltackle   Price $145.20 $133.58   You Save $11.62 Tax included

Purchase   Quantity :

Overview

40CM COLUMBIA PEDESTAL + TOP

Description

* Heavy-duty cast aluminium base with 6 x 8mm countersunk mounting holes for a solid support in a cabin or cockpit. * High-strength aluminium powder coated finish friction locking swivel base. * Moulded nylon cup insert provides a smooth swivel performance. * 228mm (9") anodised finish base. * 73mm (2 7/8") satin finish post * 360 degree rotation trac-lock swivel with a centrally located locking handle easy to reach with left or right hand. Specifications Note: Class AD (Driver): Seat mount must incorporate a mechanical interference lock and resist 150 foot pounds of

[Luvit]

Sorry for late reply been away with work. Both good suggestions. Thanks will think about both and decide which way to go.

 

[Luvit]

After a lot of deliberation I decided to keep the post and fix it back in position. 

I bought some stainless steel 1/4 dome bolts. I tapped threads into the base and the pole.

I then squirted some tef-gel in the holes and coated the threads of the bolts. This should prevent the electrolysis between the SS bolts and the Aluminium. 

 

Bolted up the gut and the pole is solid. Cleaned up the excess fur that squeeze out with some turps and job is done. 

 

The test will be at Hetvery bay next week with a 100kg passenger putting it through its paces. 

Thanks for the suggestions and after considering each one there were additional complications which lead me to this fix and I'm happy with the result.

 

[kmcrosby78]

Looks like a good solution Wayne, good job mate.

[Luvit]

Just an update on what I did to fix the seat post problem.

I spoke with both Aussie123 and Bipolar and both were very generous with there time and experience. Thanks guys.

And after a lot deliberation and straining I eventually was able to remove the base. With it removed I was able to get a aluminium welder to run a weld top and on the bottom of the base.  He thinks it will fine forever now.

Now to refit the seat and I'm back in action.

[aussie123]

Good stuff Wayne.

That was the only solution for that problem and now that it is done properly, it should last forever.

[Luvit]

I would ideally like to make the seats removable but the cost is prohibitive for the good ones. Don't think I can trust the cheaper versions in rough weather.

Ultimately I think I will be putting a access hatch in between the seats so I can bolt both the seat bases down fully. Not keen on putting a hole in the floor but seems it will be the best way for the long run.

Lance I even thought of coping the relax idea and using the aluminium base plates you have and attaching the existing bases to them. But with the dissimilar metals of the stainless bolts and aluminium base I decided against it.

Might think of away around eventually. 

Thanks again for your help.