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-   -   Source of replacement for spreader T34C (https://www.moyermarineforum.com/forums/showthread.php?t=11381)

ArtJ 01-31-2020 12:44 PM

Source of replacement for spreader T34C
 
I am in possible need of a replacement port spreader on my Tartan 34c

hull number 119 with double lowers

Does anyone know the exact dimensions and the original mfg source?

Thanks

Art

LordGothington 01-31-2020 02:20 PM

I had to get new spreaders fabricated for my 1965 Tartan 27. The shop was able to contact Tartan directly and get the specifications.

ArtJ 01-31-2020 04:36 PM

I will check with Tartan Thanks

The Tartan owner groups also used to have a lot of very detailed information, unfortunately, that information seems to have been lost or moved from the site

Al Schober 01-31-2020 11:31 PM

I would think the new port spreader should be the same length as your current stbd spreader.

ArtJ 02-01-2020 08:32 AM

Al
That is true Spreaders are both up there , however;
I am unable to climb the mast while boat is covered until spring in N.E.
Hoping
to have a replacement on hand ahead of time to avoid delays in
spring and single trip up mast if possible

Thanks

Art

jcwright 02-01-2020 11:09 AM

Art,

I have my spreaders in the basement, waiting for me to install new lights. They are original parts off our T34C (#266, which is the single lower shroud design). If it would help to have measurements of my spreaders, let me know.

jack.

ArtJ 02-01-2020 11:33 AM

Thanks Jack

Yes,

I would love to have measurements!

I am also interested in: length ,diameter, both ends dimensions and size of hole in mast end .

My port spreader is currently sitting horizontal. It should be pointing slightly upwards to bisect the shroud angles.
I asked a helper to check this and he replied that the Spreader mast end
appeared to be loose on this port side only spreader He did not remove the tape
and unfortunately his english is not too good.
I will need to go up myself and eyeball it in the Spring

My boat has double lowers yours may not, but maybe spreader is the same

Is it also possible to post a picture of the spreader?

Thank you very very much

Art

jcwright 02-01-2020 03:39 PM

Hello again Art.

I've taken some measurements and pictures of my spreader. The first page has the sketches of the top and side view, and some notes. The second page has photos. Ignore the masking tape; I put that on so I could mark the various stations on the extrusion. Let me know if you need any other information.

Here's the link to the PDF file:

https://drive.google.com/file/d/16xj...ew?usp=sharing

jack.

ArtJ 02-02-2020 10:19 AM

Jack

A Fantastic document !!

Excellent


Maybe would be worth your posting to T34 Owners group to archive this valuable detailed resource information for others ?


Thank you again very much appreciated


Art

ArtJ 02-02-2020 10:39 AM

Jack


Is it possible to send this document as a ordinary pdf that can be saved or printed outside of google ?


Thanks

jcwright 02-02-2020 11:28 AM

1 Attachment(s)
The MMI forum interface is not my forte, but I've tried to attach the PDF file to this response. Please let me know if the attachment fails.

I hope you are able to get the replacement spreader you need. I thought about referring you to an outfit in my area (RI) that claims to have parts that match, but then I read their recent reviews.

Let me know if you need more information.

Jack.

ArtJ 02-02-2020 11:40 AM

Jack

Thanks again
I am able to save and print this attached pdf now



Many Thanks


Art

BTW I keep my boat in Boston RI is nearby

ndutton 02-02-2020 11:51 AM

Art, now that you have it you can post it to the Tartan group yourself.

jcwright 02-02-2020 12:25 PM

Hello Neil (and Art).

It's OK with me if anyone wants to post the document to the Tartan group. I stopped using that forum when it migrated from its original site to its new one. I may be out of date, but many files and other resources seem not to have survived.

I do think the spreader measurements would be more helpful if they included cross sections at a few points. I haven't figured out how to get those yet, but I'll add them when I do.

Jack.

ArtJ 02-02-2020 01:51 PM

Jack

I am not a member any longer as well .
The t34c site changed from the original

ArtJ 02-09-2020 10:05 AM

Quote:

Originally Posted by jcwright (Post 119750)
Hello Neil (and Art).

It's OK with me if anyone wants to post the document to the Tartan group. I stopped using that forum when it migrated from its original site to its new one. I may be out of date, but many files and other resources seem not to have survived.

I do think the spreader measurements would be more helpful if they included cross sections at a few points. I haven't figured out how to get those yet, but I'll add them when I do.

Jack.

Hi Jack

I noticed on your photos that there appears to be a single filled hole
inboard about a inch of the other mounting holes. Does this
filled hole exist on your other spreader as well?
Could the spreader
have been attached by a single bolt originally and possibly used on a different point of attachment?

Regards

Art

jcwright 02-09-2020 10:52 AM

1 Attachment(s)
Hello Art.

I checked both spreaders. The (possibly) filled holes you mention are on both sides of both spreaders. It's difficult to measure where the center of each hole might be, as the shapes are irregular. They are approximately on the centerline of the spreader, and about 2" from the inboard edge. They are in the reinforced section I mentioned in an earlier post, which is about double the wall thickness of the rest of the spreader.

There is no evidence that the 'holes' extended through the reinforced section; inside the spreader there are no welds or other filler where a might have been.

So, it's a bit of a mystery to me what these spots are. I've attached a photo.

Let me know if you need any other information.

jack.

tenders 02-09-2020 01:45 PM

That spreader in many ways resembles the lowers from my ‘69 Ericson 32 - which were made of Sitka spruce. The shape is not that complicated and aside from the length, very little needs to be precise as long as it fits the mounting hardware.

I made replacements of my four spreaders over a weekend from a slab of raw wood and just a few woodworking tools - borrowed my brother-in-law’s planer and router, and the rest was bandsaw, drilling, and sanding. I have no particular woodworking skills but it was all very straightforward once the wood was planed to the right thickness. Coated them all with West epoxy with UV hardener, and (initially) two coats of Brightside, then after ten years recoated them with epoxy and three coats of Perfection.

Don’t make too many assumptions about the symmetry of the port and starboard pieces. It’s possible that your aluminum part was made from a casting of a wooden version with a different attachment method, which itself may not have been identical to the piece on the other side. This could explain the phantom hole in the casting.

What are “double lower spreaders”? How many spreaders have you got on that thing?

jcwright 02-09-2020 02:35 PM

I believe Art's earlier post about 'double lowers' was referring to double lower shrouds. Earlier T34Cs had two lower shrouds per side. The later design (like mine) had one per side. As far as I'm aware, the mast height did not change. I suspect the spreader dimensions didn't change either.

ArtJ 02-09-2020 03:28 PM

Thanks Jack

I was wondering about the holes and if the spreader had been repurposed.


Regarding Spreader design and placement I read a article from This Old Boat?

or Practical Sailor ?which cautioned about spreaders being the most common point of mast failure, It cautions that the shroud angle above and below the
spreader be equal to avoid a mast failure. It also cautioned that spreader design is not be be taken lightly . If I can find the article again I will post the location. I think I googled "spreaders design / failure or something similar

Regards and thanks
Art

ArtJ 02-09-2020 03:37 PM

The Spreader article is from the SEPT/Oct 2019 issue 128 of Good Old Boat
"Equal Angles Equal Forces " Pg17 " correct adjustment may save your rig"



https://goodoldboat.com/equal-angles-equal-forces/




Regards
Art

Marty Levenson 02-09-2020 04:50 PM

Good stuff
 
Thanks for the information. I can imagine tugging on a stuck flag when heeled over.....!

jcwright 02-09-2020 04:50 PM

1 Attachment(s)
I've attached the best copy I have of Sparkman & Stephens' sail plan for the T34C. It shows the designed length of the spreader (3') and the height of the spreader base at the mast. Let me know if there is any other information you need.

Jack.

ArtJ 02-09-2020 06:32 PM

Thanks Jack
That is a better copy than mine and proves that the spreaders are the same
on both single and double lowers versions

Thabks

Art

jcwright 02-15-2020 12:38 PM

1 Attachment(s)
Art,

I've attached an updated drawing of the T34C spreader, this time including the cross-sections that were missing from the earlier file.

Jack.


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