I’m about to order a 55KG (121 lb) Rocna for my 75CMY. Does anyone know if the Rocna will play nice with my pulpit?
Brett
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Thread: Rocna Anchor on a 75
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07-30-2019 09:11 PM #1Senior Member
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- Jan 2009
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Rocna Anchor on a 75
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07-30-2019 09:20 PM #2
Re: Rocna Anchor on a 75
You might want to consider the Vulcan made by Rocna....
http://rocna.com/product-range/vulcan
I believe the fit of the Vulcan would be better than the original Rocna…
I'm looking at the Vulcan 55 kg myself ...JD
1976 58' LRC Hull #311
"Miss Maggie"
Riviera Dunes, FL
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07-31-2019 08:23 AM #3Senior Member
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- Jul 2007
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Re: Rocna Anchor on a 75
I have the 55kg Rocna Vulcan and it fits well, if a bit low. I had to cut a notch in the front of the chrome steel to allow the anchor to come up a bit more. The shank of the Vulcan is very large and gets stopped from coming full up by jamming between the roller and the front of the steel pulpit assembly. A notch a bit wider than the thickness of the shank lets it come up several more inches.
I’d post a picture, but I used a hand grinder and it’s a bit of a hack job. I plan on making it pretty this fall when we haul out. Mr Clarkson’s pictures have made me embarrassed to post pictures of my ugly duckling!Michael & Beth
Hull Number CV312
63’ Cockpit Motor Yacht
1986 model launched in August 1987
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07-31-2019 10:59 AM #4
Re: Rocna Anchor on a 75
Michael... I woud much appreciate a photo so I can more easily visualize how the anchor fits under the pulpit.... when I looked at the Vulcan shank dimensions... I did wonder if the bow roller frame would need modifying..... did you think or try to move the roller aft and drill new holes for the roller shaft?
I was thinking that might be a possibility....
If you could even PM me the photo it would be most appreciated.... Thanks!JD
1976 58' LRC Hull #311
"Miss Maggie"
Riviera Dunes, FL
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07-31-2019 11:52 AM #5Senior Member
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- Jul 2007
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Re: Rocna Anchor on a 75
I thought it would be harder to drill SS than to grind it. If we were in a shipyard or on the hard, I would’ve tried to relocate the anchor roller instead. I’ll be anchoring near Deltaville later today and will try to get a picture to send you.
Michael & Beth
Hull Number CV312
63’ Cockpit Motor Yacht
1986 model launched in August 1987
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07-31-2019 11:55 AM #6
Re: Rocna Anchor on a 75
Much appreciated!!
JD
1976 58' LRC Hull #311
"Miss Maggie"
Riviera Dunes, FL
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07-31-2019 02:13 PM #7Senior Member
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- Dec 2013
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Re: Rocna Anchor on a 75
Hi,I use a 55kg Rocna on my 54MY. It sits perfectly in the original pulpit, no modifications done. See pic 😊
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Re: Rocna Anchor on a 75
Semper Siesta
Robert Clarkson
ASLAN, 1983 55C #343
Charleston, SC
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07-31-2019 04:00 PM #9Senior Member
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Re: Rocna Anchor on a 75
This is the notch in my pulpit. I’ll smooth and fill the fiberglass during the fall work program. This was a quick and dirty job to make things useable.
Michael & Beth
Hull Number CV312
63’ Cockpit Motor Yacht
1986 model launched in August 1987
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07-31-2019 08:10 PM #10Senior Member
- Join Date
- Apr 2014
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- 296
Re: Rocna Anchor on a 75
You can drill stainless steel but you need to go slow. Slowest speed your drill will turn. Lots of lubrication to prevent it from getting hot and "work-hardening" at which point you're pretty much screwed. If drilling by hand, use a carbide tipped bit. Don't use solid carbide or you'll break the bit every time.