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

Sat Aug 3 21:40:28 EDT 2024

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
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