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Old 10-21-2013, 08:37 AM   #1
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Helm Seat

I am thinking of replacing our flybridge helm chair. I have looked around at a few, but they all have different bases that ours. Is there an adapter plate? Any ideas on fitting a new chair would be great.

Thanks!


P1030816 by GonzoF1, on Flickr


P1030817 by GonzoF1, on Flickr
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Old 10-21-2013, 09:17 AM   #2
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Probably easier to remove the plate from the chair frame, and mount it to your new chair.

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Old 10-21-2013, 09:26 AM   #3
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that base looks pretty bulletproof, if it's ugly why not recover, if it's uncomfortable have a good auto upholstery shop rebuild it and add support to it where needed.
why actually replace it?
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Old 10-21-2013, 10:32 AM   #4
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If I already had a strong base like yours appears to be, I'd do what I could to adapt the seat I want, for sure. A strong and attractive slip collar could be easily made at a local welding shop that does alum. and SS. Pulling that base out of there and re-drilling for a new base would only weaken the area.

Another thought would be to use the current mounting holes to fasten a thick mounting pad from glass, starboard or aluminum, and then from the underside of the new mounting pad, countersink the studs to mount your new pedestal.
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Old 10-21-2013, 10:56 AM   #5
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If I already had a strong base like yours appears to be, I'd do what I could to adapt the seat I want, for sure. A strong and attractive slip collar could be easily made at a local welding shop that does alum. and SS. Pulling that base out of there and re-drilling for a new base would only weaken the area.

Another thought would be to use the current mounting holes to fasten a thick mounting pad from glass, starboard or aluminum, and then from the underside of the new mounting pad, countersink the studs to mount your new pedestal.
I have thought of both of these, but trying to adapt the upright to a new seat seems like the best idea. However, I was HOPING to get one that adjusts height (the current one is about right at it's lowest, but I would like to go lower) like an office chair. An air shock, perhaps? I am not sure I could graft a new-fangly system onto an Jurassic upright, but I could be wrong. Moreover, trying to fabricate my own version of a mount might not end up with the most optimal results.

I guess I need to get on the phone to manufacturers and see what they recommend. Maybe they fabricate adapter plates. Who do y'all like?
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Old 10-21-2013, 11:21 AM   #6
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I was HOPING to get one that adjusts height (the current one is about right at it's lowest, but I would like to go lower) like an office chair.
I've always thought that the adjustable base on my salon table would make a great helm seat base. Mine has a very substantial "crank" (Not seen in the photo) that allows easy adjustment to height. Here is one idea for an adjustable base, depending on what your budget is.

Springfield Marine Adjustable Height Pedestal-73363 - Gander Mountain
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Old 10-21-2013, 11:51 AM   #7
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Tom: Is your pedestal made from SS or Alum.? What outside diameter is the seat tube, assuming it is the approx. inside diameter of the pedestal tube. I'd be out at the local marine thrift shops looking for a piece of something to make it work. If you want to make the adjustment level lower, you can't cut and weld the tube? Yours looks nice.
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Old 10-21-2013, 07:08 PM   #8
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It sort of looks like there is a slip tube, a seam, that starts a few inches above the foot rest and then extends to the collar with the set screw. If that is the case than could you not simply cut an inch or two from the base of the slip tube.

If not then get the riser tube cut and rewelded. Find someone who can do a GOOD job.

That does look like a nicely done and strong pedestal base and seat base and those babies are usually not cheap or as well done if new unless big $.

Look like S.S. to me.

Just double check how much adjustment there is at the top to see if after cutting the tube there is enough adjustment left although even that likely could be added to.
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Old 10-21-2013, 07:33 PM   #9
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Find the welder used by local restaurants for their stainless steel kitchen equipment. He will tend to be the cleanest local TIG welder. Doubt you'd even notice your desired mods once he's done cutting and welding it back together.

Agree that's a great looking base and pedestal and spendy to replace.
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Old 10-21-2013, 07:45 PM   #10
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Good idea about the restaurant equipment shops. Just be sure though that they use 316L rod. Hopefully they will have it or can get a small supply. At least approach them.

I've seen some work done at local sheet metal shops that is excellent, but as mentioned they also did resaurant work.
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Old 10-21-2013, 07:56 PM   #11
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It sort of looks like there is a slip tube, a seam, that starts a few inches above the foot rest and then extends to the collar with the set screw. If that is the case than could you not simply cut an inch or two from the base of the slip tube.
No... Sorry. Solid tube from floor up to the collar in the first pic. I could probably cut the tube and have a new collar put on (or reuse the old). But I syill need to get a new chair to mount into the old tube. Anyone put a new seat on old stand like that?

I suppose I should have been armed with a bit more info before posting this. I don't have the tube sizes. Sorry.
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Old 10-22-2013, 05:25 PM   #12
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Yeah, I wondered about that "seam". Likely it was a reflection of the foot ring.

I see two screws that go through the ss tube frame into the seat base which is likely plywood. The other two screws, out of sight I assume, would make four.


Measure the ss tube seat platform and the seat base and check any new seat you are considering to see if it will fit and be refastened.

Even if you have to add a piece of something like Starboard to make an adapter between the tube frame and the new seat it should not be difficult to reuse the existing pedestal.

If need be drill a few more holes and add some extra screws.

Although a different seat and base, I did the same. Most seats, I think you will find, are a flat bottom and should not be hard to adapt. Unless of course you are after a Stidd or similar.

The only fly in the ointment will be if you have to lower the seat more than the existing setup will allow. Even then I think you will be ahead, overall, to get it cut and rewelded.

You have a good pedestal that I suspect will be expensive to replace + the need to then redo its mounting to the deck. I'll bet the existing holes will not line up with any replacement.
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Old 10-22-2013, 05:44 PM   #13
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Quote:
Originally Posted by hollywood8118 View Post
that base looks pretty bulletproof, if it's ugly why not recover, if it's uncomfortable have a good auto upholstery shop rebuild it and add support to it where needed.
why actually replace it?
HOLLYWOOD

For what it's worth, we did remake the seat cushions and new foam since that picture he posted. He's hoping for one of those cool new captain chairs with bolster.
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Old 10-22-2013, 07:45 PM   #14
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Easy enough to do an upgrade on that Helm Seat, but you may have to change the name of the boat to "Deep Dipin". May as well go with Joystick control and a glass of champaign ILO the coke.
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Old 10-22-2013, 08:41 PM   #15
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Nicely played,sir. There is one other factor that, while i would LOVE a chair like that, the current post , I think, is too close to the wheel for it. I will get that measurement next wee too.
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Old 10-22-2013, 09:37 PM   #16
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Tom & Bess: My own chair is identical to that one, except my trim and footrest are SS. I've always had one of those four-legged helm chairs that I could simply lift to the side and I haven't been able to commit to bolting down something like that yet. I dunno. Meanwhile, I'm dressing up my pilothouse in preparation.
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Old 10-22-2013, 09:38 PM   #17
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When we replace the upper helm seat on Bay Pelican we were able to reuse the existing stand by drilling the plate and then use the new holes to bolt a Todd seat into place. Not an exotic high class seat but then the seat was exposed to the weather 24/7.

We have since abandoned the upper helm seat in favor of a cocktail table.

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