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Old 14-11-2016, 08:15   #1
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Cam cleat backup plate.

I am planning add couple of harken #150 cam cleats .
I am looking for backup plate for this cleat, but could not find one .
Is there any production or do I have to make one?
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Old 14-11-2016, 08:49   #2
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Re: Cam cleat backup plate.

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Originally Posted by cpt_757 View Post
I am planning add couple of harken #150 cam cleats .
I am looking for backup plate for this cleat, but could not find one .
Is there any production or do I have to make one?
Just buy a sheet of G10 and make your own. You'll find a use for the rest of the sheet, trust me.

G10 sheets at ePlastics

FYI not endorsing this vendor, it just came up when I searched and the page shows the variety of thicknesses and sizes you can get.
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Old 14-11-2016, 08:55   #3
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Re: Cam cleat backup plate.

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Originally Posted by Suijin View Post
Just buy a sheet of G10 and make your own. You'll find a use for the rest of the sheet, trust me.

G10 sheets at ePlastics

FYI not endorsing this vendor, it just came up when I searched and the page shows the variety of thicknesses and sizes you can get.
+1 on G10.

Just use a diamond dusted blades and drill bits to cut/drill it as regular blades get dulled quickly. I used G10 to back up my windlass and going forward am using the leftovers to back up anything else which needs back upping.

PS Originally bought an almost full (6"X6" corner cut out) 4'X2' sheet off of craigslist for about $50 (if full would have to pay over $200+shipping). Some guy sold his boat and no longer needed it. So that's where I would look first.
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Old 14-11-2016, 08:56   #4
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Re: Cam cleat backup plate.

Thank you,
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Old 14-11-2016, 10:05   #5
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Re: Cam cleat backup plate.

If you need an angle on the cleat, and often one does, this is the Harken solution http://www.harken.com/productdetail....5061&taxid=392. Else, fender washer will work ok.
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Old 15-11-2016, 09:30   #6
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Re: Cam cleat backup plate.

Which thickness would be suitable?
Thanks.
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Old 15-11-2016, 09:42   #7
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Re: Cam cleat backup plate.

Would think fender washers would be more than adequate as a backing for a cam cleat.
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Old 15-11-2016, 09:43   #8
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Re: Cam cleat backup plate.

I agree. Backing plates are great for spreading loads, but this is rarely a lot of load.
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Old 15-11-2016, 09:50   #9
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Re: Cam cleat backup plate.

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Which thickness would be suitable?
Thanks.

I am thinking about less than 1.5 mm.
Click image for larger version

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This is the pic of backing plate for pad eye.
Thickness can be same as this or a little bit less.
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Old 15-11-2016, 09:53   #10
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Re: Cam cleat backup plate.

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Would think fender washers would be more than adequate as a backing for a cam cleat.

I agree. I am considering washers as alternatives.
Thanks,
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Old 15-11-2016, 10:20   #11
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Re: Cam cleat backup plate.

I guess it may make a difference where you are installing the cleat, is the deck cored, how thick is each skin... if you have core, make sure to seal it. McMaster has every size and thickness of fender washers if you don't have a good local source.
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Old 15-11-2016, 10:42   #12
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Re: Cam cleat backup plate.

G10 is probably overkill, regular FRP sheet stock works just fine for backing plates.
Here is a potential source https://www.mcmaster.com/#fiberglass-sheets/=151wn9l
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Old 15-11-2016, 10:58   #13
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Re: Cam cleat backup plate.

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Originally Posted by guyrj33 View Post
G10 is probably overkill, regular FRP sheet stock works just fine for backing plates.
Here is a potential source https://www.mcmaster.com/#fiberglass-sheets/=151wn9l


Quote:
Originally Posted by bad.wabbit View Post
I guess it may make a difference where you are installing the cleat, is the deck cored, how thick is each skin... if you have core, make sure to seal it. McMaster has every size and thickness of fender washers if you don't have a good local source.

Thank you,
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Old 15-11-2016, 17:15   #14
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Re: Cam cleat backup plate.

Large washers are sufficient. Loads on such cleats are rarely high, & by manufacturer's spec's, shouldn't be. Though if you must have a backer, most anything will suffice. Go with scrap aluminum, plywood, or even GRP stock. G10 is overkill, & over budget, along with being hard on tools' cutting edges. Even phenolic will work.
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Old 15-11-2016, 19:30   #15
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Re: Cam cleat backup plate.

Oops, my bad - didn't notice "cam" in the first post. Was thinking of the regular cleats at the bow. But I still prefer G10 over any other material for backing plates. So if you have any handy, of suitable thickness (not too thick in case of cam cleats) I'd still go with that. But if not I wouldn't go out of my way to get it and would just use good size washers.

BTW as I often follow the parting out of old boats at the boat yard (sometimes just looking for replacement parts, etc) I am often surprised at the shortcuts used on supposedly decent brands's boats - thin washers for backing plates, screws where one would normally expect backed up bolts, etc. No wonder some of those boats end up cut up while being barely 20-25 years old. I find it very educational to watch an "autopsy" of a boat destined for the fill.
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