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Old 05-05-2015, 09:21   #1
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Motorcycle Chain On My Mast

Any thoughts on this rigging, what it's called, or where I can find replacement chain? The chain (looks like stainless motorcycle drive chain) wraps around a sprocket at the bottom of the whisker/spinnaker pole T-track. The sprocket can be turned with a winch handle to adjust the height of the pole attachment pins. It seems like a pretty handy setup. I'd like to get it working, but several links of the chain are broken. Thanks for the help.Click image for larger version

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Old 05-05-2015, 09:27   #2
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Re: Motorcycle Chain On My Mast

I have never seen anything like that on a boat other than in a steering binnacle. I would think a bike shop or motorcycle repair shop could at least tell you the critical dimensions to take to mcMaster Carr, or whoever makes bike chains. But I am guessing
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Old 05-05-2015, 09:36   #3
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Re: Motorcycle Chain On My Mast

... Let me google that for you

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Old 05-05-2015, 11:19   #4
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Re: Motorcycle Chain On My Mast

Steering system chain. Probably the same stuff. Thanks, Stumble. That's a helpful comment. Now I have something to Google . . .


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Old 05-05-2015, 11:36   #5
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Re: Motorcycle Chain On My Mast

stainless roller chain, also used for pedestal steering about 1/4 the price from Edson.

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Old 05-05-2015, 11:37   #6
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Re: Motorcycle Chain On My Mast

Size 40 stainless chain. Pretty common stuff used on bikes, conveyors, drive systems, whatever. Motorcycle chain can have o-ring seals so you wouldn't have to keep it lubricated, but it probably won't be stainless.

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Old 05-05-2015, 12:15   #7
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Re: Motorcycle Chain On My Mast

The set up is probably from Forespar. It looks like their toggles on the track. If nothing else, they can probably supply the chain though it would undoubtedly be cheaper from a non marine source.

If you can find a source, you could probably repair the chain with master links replacing the missing/broken links. That would probably save a bunch.
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Old 06-05-2015, 09:06   #8
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Re: Motorcycle Chain On My Mast

I googled the stampings from photo of your the chain and found:

TSUBAKI Roller Chain,Riveted,40SS ANSI,10 ft ... - Grainger

W. W. Grainger
Shop TSUBAKI Roller Chain,Riveted,40SS ANSI,10 ft. (6L076) at Grainger. ... Country of Origin JapanCountry of Origin is subject to change. Note: Product ...[/I][/I]
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Old 06-05-2015, 10:10   #9
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Re: Motorcycle Chain On My Mast

I had that same setup on a Hallberg Rassy 42. Worked great. It so happens it is the same chain the autopilot used. Florida Rigging was able to get parts for it for me.
rigginghydraulics.com

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Old 06-05-2015, 10:52   #10
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Re: Motorcycle Chain On My Mast

So it appears that 40SS is a size, and refers to ANSI Size 40 chain. I had no idea there was a numbering convention for this. Good to know.
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Old 06-05-2015, 13:37   #11
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Re: Motorcycle Chain On My Mast

The SS part is for stainless.

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Old 07-05-2015, 08:50   #12
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Re: Motorcycle Chain On My Mast

Quote:
Originally Posted by Departing2017 View Post
Any thoughts on this rigging, what it's called, or where I can find replacement chain? The chain (looks like stainless motorcycle drive chain) wraps around a sprocket at the bottom of the whisker/spinnaker pole T-track. The sprocket can be turned with a winch handle to adjust the height of the pole attachment pins. It seems like a pretty handy setup. I'd like to get it working, but several links of the chain are broken. Thanks for the help.Attachment 101448

Attachment 101449

Attachment 101450
Go look up a belt and transmssion shop and they should have the links you would need to repiar the chain. The links are replaceable. Just bring a sample with you so you can match it up perfectly.

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