CD36 outhaul car

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David L
Posts: 89
Joined: Jul 14th, '05, 15:48
Location: CD36 #115 "Raven" Seabrook, TX

CD36 outhaul car

Post by David L »

Photos of Raven's broken outhaul car:

Image

Image

Does anyone know the Schaefer part number for the 3/4" x 3 3/4" outhaul car used on 1984 CD36s? The owner's manual lists part numbers for many Schaefer blocks, but not the outhaul. Schaefer told me they don't make this any more or have any spares. They are trying to come up with a solution. They also say they can't weld a new ring to replace the broken one.

RigRite has possible replacements:
http://www.rigrite.com/Spars/SparParts/ ... egral.html
in the section titled "Outhaul Slides for 3/4" Internal Flat Track".

Image

Sch 95-54X is 3 3/4" (same length) but the toggle is not hinged.

Image

Sch 95-82X is 4 3/4" (1" longer) and has the pivoting toggle.

Both have an unnecessary sheave (for the outhaul wire) mounted on the car.

Why does that toggle pivot? Does it really help sail shape? Will I miss it if I go with the fixed toggle?

Your thoughts, please.

David
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tartansailor
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Joined: Aug 30th, '05, 13:55
Location: CD25, Renaissance, Milton, DE

Outhaul Toggle

Post by tartansailor »

Dave,
A toggled outhaul is designed to lower the moment arm of the car, thus reducing the force wedging open the slot in the internal boom track.

You want the sheave.

The fact that your ring broke is telling.

There must be confident, capable welders locally.

Dick
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David L
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Joined: Jul 14th, '05, 15:48
Location: CD36 #115 "Raven" Seabrook, TX

local welders

Post by David L »

Dick:

Thanks for the info and the thought to check out local welders. Sometimes the obvious is too close to be seen.

David
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Russell
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Location: s/v Lady PaulineCape Dory 36 #117

Post by Russell »

I think the pivot would be a good thing if you had a loose footed main. Though it wouldnt hurt in a traditional main.

Oddly, Schaefer has no spares? Both those Rigrite parts are schaefer (the photos are reverse negetive, but that is obviously the Schaefer logo on them).
Russell
s/v (yet to be named) Tayana 42CC
s/v Lady Pauline Cape Dory 36 #117 (for sale)
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David L
Posts: 89
Joined: Jul 14th, '05, 15:48
Location: CD36 #115 "Raven" Seabrook, TX

Which way round?

Post by David L »

Dick:
Russell:

If I can't find a local welder to effect a repair, I'm probably going to get the Sch 95-82X pivoting toggle car. When mounted, should the sheave should be forward or aft of the toggle? I'm confused as how to best minimize the turning moment that Dick mentioned.

The existing outhaul wire has been simply shackled to the ring on the aft end of the car. To use the sheave, and get a 2:1 mechanical advantage, I'll have to (1) add an eye strap to the back end of the boom, (2) cut off the existing swaged end, (3) pass the wire around the sheave, and (4) swage on another fitting (or thimble). Am I seeing this right? I hope the wire's long enough.

Thanks,
David
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Russell
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Location: s/v Lady PaulineCape Dory 36 #117

Post by Russell »

If I was switching the whole thing out, I would be tempted to ditch the wire outhaul alltogether and go with ultra low stretch high tech line (like amsteel or similar).
Russell
s/v (yet to be named) Tayana 42CC
s/v Lady Pauline Cape Dory 36 #117 (for sale)
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Bill Cochrane
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Location: Cape Dory 36 #114
s/v Phoenix

Post by Bill Cochrane »

Isn't there already a purchase inside the boom? I've not had it apart but it seems as if there's a 2 or 3 to 1 purchase, and a rope-wire splice. I've been tempted to pull the boom end cap off and look, as something in there is getting a bit stiff.

The turning moment has to do with lateral pressure on the car (at a right angle to the boom) with possible distortion of the track shoulders; the hinged base reduces that moment. The sheave position won't affect that, but the sheave would need to be on the after end of the car if you were to use it in the way you describe.

HOWEVER, the lead on 95-x2 is wrong...it looks as though it expects the wire from both the fixed and working ends to be above the car at about 30 degrees. The lead on the 95-54x car looks right, but it isn't hinged...it also looks as though it's intended for the sheave to be forward (I'm looking at the way the shackle portion is shaped...the downward sloped side should be away from the direction of tension, or aft of the sail. (somebody tell me if I'm wrong here...not that I have to ask...)

If you were to choose one of those, I'd go with the 95-82x and forget about using the sheave, mount it so that the sheave is aft, however.
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David van den Burgh
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CD36 outhaul

Post by David van den Burgh »

Bill Cochrane wrote:...the downward sloped side should be away from the direction of tension, or aft of the sail. (somebody tell me if I'm wrong here...not that I have to ask...)
<img width="540" src="http://www.ariel-cd36.org/outhaul.jpg">

This is how Ariel's outhaul is configured, a 79 CD36. (Pardon the blurriness; the picture's of my kid, not the outhaul).
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David L
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Joined: Jul 14th, '05, 15:48
Location: CD36 #115 "Raven" Seabrook, TX

Post by David L »

All:

Thanks for all your help.

Yes, there's a 3:1 purchase inside the boom. I discovered it when I replaced the line two years ago. I switched from Schaefer to Harken blocks while I was at it.

OK. Now I get it about the lateral pull of the sail being minimized by the pivoting toggle.

I've already had the boom end cap off, to remove the outhaul car. The high-tech line sounds good. Will check into it.

I'm hoping to hear back from Schaefer tomorrow. Will keep y'all posted.

Many thanks,
David
Mike_Carroll
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Joined: Jul 9th, '12, 21:00

Re: CD36 outhaul car

Post by Mike_Carroll »

clew outhaul solution.jpg
(I know very old thread)

RigRite never responded to my request for price/availability for sch 95-55x outhaul car for my CD33.

See attachment for my fix
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