[Rhodes22-list] How to replace forward lower chainplates?

Scott Andrews sea20 at verizon.net
Sun Aug 4 15:31:33 EDT 2024


Great information! I continue to be amazed by the wonderful sharing among owners. Thanks to all.
Scott & Rebecca 
Sent from my iPhone

> On Aug 4, 2024, at 12:27 PM, mm.bizlist1 at gmail.com wrote:
> 
> Thank you again Todd and Roger for helping me plan this project.  I will take pictures and do a write up to consolidate all this advice into a single document.
> 
> Mike
> 
> -----Original Message-----
> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> On Behalf Of Todd Tavares
> Sent: Saturday, August 3, 2024 11:16 PM
> To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org>
> Subject: Re: [Rhodes22-list] How to replace forward lower chainplates?
> 
> Roger,
> 
> Eventually two pictures came through. There was also another link that
> tried to download but stalled.
> 
> I just wanted to stress to Michael that your way was far better than any
> other...especially better than my way.
> 
> When you wrote about cutting the chainplate off that protrudes above the
> cabin roof, it was face palm moment. Why didn't I think of that.
> 
> Todd T.
> 
>> On Sat, Aug 3, 2024, 10:05 PM ROGER PIHLAJA <roger_pihlaja at msn.com> wrote:
>> 
>> Todd,
>> 
>> I sent the photos as a .pdf attachment.  Doesn’t that work anymore?  If
>> you give me your email address, I’ll resend the photos to you.
>> 
>> Roger Pihlaja
>> S/V Dynamic Equilibrium
>> 1978. Sanford, MI
>> 
>> Sent from my iPhone
>> 
>>>> On Aug 3, 2024, at 7:22 PM, Todd Tavares <tavares0947 at gmail.com> wrote:
>>> 
>>> Mike,
>>> 
>>> Roger has come up with the best way of repairing and or replacing the
>> lower
>>> shroud chainplates.
>>> He posted pictures, but they did not come through on my end. By cutting
>> the
>>> chainplate off flush where it comes out through the cabin top, thus
>>> removing most of the bend, you should be able to fish the piece out
>> without
>>> cutting down the side, or using the die grinder.
>>> 
>>> You will however have to cut rectangular hole lower in the side to
>>> reinforce the side outer cabin wall and mount the new chainplates.
>>> 
>>> Todd T.
>>> 
>>>> On Fri, Aug 2, 2024, 4:45 PM <mm.bizlist1 at gmail.com> wrote:
>>>> 
>>>> Roger and Todd,
>>>> 
>>>> Before I start cutting holes in my boat, I want to make sure I
>> understand
>>>> the full process, so please let me know if I am misunderstanding
>>>> anything.
>>>> 
>>>> The original chainplate is bent in an L-shape and screwed to plywood
>> inside
>>>> the ceiling of the cabin with one or two wood screws.  To remove the old
>>>> chainplate, you need to open a hole in the ceiling liner.  In Todd's
>> case,
>>>> he also needed to open some of adjacent sidewall of the cabin to gain
>>>> sufficient clearance to extract the old chainplate.  Roger, did you
>> need to
>>>> do that also, or did you use a different approach?
>>>> 
>>>> In any event, the hole in the ceiling needs to be repaired afterwards.
>> Was
>>>> there much difficulty in achieving a clean repair of the ceiling liner?
>>>> 
>>>> A second hole of the correct size for the deckplate inspection port is
>>>> drilled in the inside sidewall liner below the chainplate opening.  A
>>>> backing plate (1/4" plywood?) is epoxied inside of the outer layer of
>> the
>>>> cabin sidewall.  The new chainplate is through-bolted to the backing
>> plate.
>>>> Finally, the deckplate is installed to the inside liner of the cabin as
>> an
>>>> inspection port.
>>>> 
>>>> Is the above description correct?
>>>> 
>>>> Thanks,
>>>> 
>>>> Mike
>>>> 
>>>> -----Original Message-----
>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> On Behalf Of
>>>> ROGER
>>>> PIHLAJA
>>>> Sent: Friday, August 2, 2024 12:59 PM
>>>> To: 'The Rhodes 22 Email List' <rhodes22-list at rhodes22.org>
>>>> Subject: Re: [Rhodes22-list] How to replace forward lower chainplates?
>>>> 
>>>> You use something like a hole saw to make a 4-1/2" ID hole in the cabin
>>>> liner.  This will expose the plywood core and the old chainplate.
>> Remove
>>>> the old chainplate and any plywood that's in the way, install a new
>>>> chainplate made of straight SS bar stock, (Note that this new chainplate
>>>> goes thru the original hole in the cabin roof)  and thru bolt it thru
>> the
>>>> outer cabin wall.  Then, install the Beckson inspection plate.  Easy
>> peasy,
>>>> it takes about 30 minutes to do each chainplate.  You can easily do all
>> 4
>>>> inner chainplates in an afternoon.  Other than two round head machine
>>>> screws
>>>> + fender washers on the side of the cabin at each chain plate and 4
>> Beckson
>>>> inspection plates in the cabin, the  installation will look stock.  But,
>>>> you
>>>> will be able to inspect/repair/replace the 4 inner chainplates whenever
>> you
>>>> want.
>>>> 
>>>> Roger Pihlaja
>>>> S/V Dynamic Equilibrium
>>>> 1978  Sanford, MI
>>>> 
>>>> Roger Pihlaja
>>>> 
>>>> ________________________________
>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> on behalf of
>>>> mm.bizlist1 at gmail.com <mm.bizlist1 at gmail.com>
>>>> Sent: Friday, August 2, 2024 12:40 PM
>>>> To: 'The Rhodes 22 Email List' <rhodes22-list at rhodes22.org>
>>>> Subject: Re: [Rhodes22-list] How to replace forward lower chainplates?
>>>> 
>>>> Roger, how did you remove the existing chainplates?  Did you have to
>> open
>>>> up
>>>> the cabin liner?
>>>> 
>>>> -----Original Message-----
>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> On Behalf Of
>>>> ROGER
>>>> PIHLAJA
>>>> Sent: Tuesday, July 30, 2024 11:47 AM
>>>> To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org>
>>>> Subject: Re: [Rhodes22-list] How to replace forward lower chainplates?
>>>> 
>>>> Hi All,
>>>> 
>>>> One of the first things I replaced when I bought my boat back in 1987
>> were
>>>> the four lower chainplates.  There is no way to inspect the factory OEM
>>>> lower chainplates.  Sooner or later, water is going to infiltrate into
>> the
>>>> plywood core, causing it to rot.  This is easily fixed by installing 4
>>>> Beckson 4-1/2" white screw-out deck plates (Beckson P/N: DP40-W,
>> Defender
>>>> Marine C/N: 941619, $17.36 each + S&H) thru the cabin liner.  With these
>>>> inspection plates installed, you can thru bolt the lower chainplates
>> thru
>>>> the outer cabin wall and easily inspect them whenever you wish.  I do
>> not
>>>> trust wood screws into the plywood core for this heavily loaded
>> component,
>>>> especially not when the fix is so easy.  Just bite the bullet and do
>> this
>>>> upgrade.  You'll never have to worry about it again.
>>>> 
>>>> Roger Pihlaja
>>>> S/V Dynamic Equilibrium
>>>> 1978  Sanford, MI
>>>> ________________________________
>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> on behalf of
>>>> Graham
>>>> Stewart <gstewart.gm at gmail.com>
>>>> Sent: Tuesday, July 30, 2024 10:16 AM
>>>> To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org>
>>>> Subject: Re: [Rhodes22-list] How to replace forward lower chainplates?
>>>> 
>>>> The chain plate is a bent stainless-steel tang. Mine was held in place
>> with
>>>> a single screw into the plywood core of the cabin top. I have attached a
>>>> picture of the chainplate. Knowing the width, you should be able to
>>>> calculate pretty accurately where the screw would be. Removing a
>> section of
>>>> the liner should allow you to remove the screw without needing to
>> create a
>>>> large hole.
>>>> 
>>>> 
>>>> Graham Stewart
>>>> Rhodes 22
>>>> Agile, 1976
>>>> ________________________________
>>>> From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> on behalf of
>>>> Michael McKay <mm.bizlist1 at gmail.com>
>>>> Sent: Sunday, July 28, 2024 4:59 PM
>>>> To: rhodes22-list at rhodes22.org <rhodes22-list at rhodes22.org>
>>>> Subject: [Rhodes22-list] How to replace forward lower chainplates?
>>>> 
>>>> Hi Rhodies,
>>>> 
>>>> I damaged one of my forward lower chainplates and need to replace it.
>>>> 
>>>> It  is evidently attached to something between the inner and outer
>>>> fiberglass skins, so my plan would be to cut an access hole from the
>>>> inside.
>>>> 
>>>> Can you provide any guidance about how best to approach this project?
>>>> 
>>>> Thank you!
>>>> 
>>>> Mike McKay
>>>> S/V Liber 2006/2108
>>>> Allatoona Lake, GA
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Michael McKay
>>>> (630) 209-2054 (m)
>>>> 
>>>> Sent from my iPhone
>>>> -------------- next part --------------
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>>>> Desc: Chainplate.JPG
>>>> URL:
>>>> <
>>>> http://rhodes22.or/
>>>> 
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>>>> <http://rhodes22.or/>
>>>> 
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>>>> http://r
>>>> 
>>>> 
>> hodes22.org/pipermail/rhodes22-list/attachments/20240730/05e2d6ca/attachment
>>>> .jpe>>
>>>> 
>>>> 
>>>> 
>> 
> 



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