5/16 G4 Connecting Link - any such thing?

Status
Not open for further replies.
Jun 5, 2004
249
Hunter 36 Newburyport, MA
Many chandleries carry BBB or other G30 'rivetted-C' connecting links that will match the chain's link size and go through the windlass. e.g. http://store.hamiltonmarine.com/browse.cfm/4,2735.htm Is there anything on the market of similar characteristics, except for higher load rating - specifically, G4 - for joining shots of 5/16? Thanks.
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Check McMaster-Carr

search "chain links" for over head lifting.
 

RAD

.
Jun 3, 2004
2,330
Catalina 30 Bay Shore, N.Y.
Al, see link (pardon the pun)

I had the same problem last year and this is what I used,worked like a charm
 
Dec 2, 2003
4,245
- - Seabeck WA
Yep, I used RADs link.

It's one size down in strength from HT but what the hell. We use 1/4". That's good enough for a 40 footer. On our 34 IT AIN'T NEVER GONNA BREAK. I think I found out why a HT (G4) link is not available. Nobody makes them it seems. When I peened the Proof link, it was almost impossible to hit it hard enough to bend the little nubs. You'll see. Set it on a anvil if you have one, or use a thick steel plate and at least a two pound hammer. Prepare to spend about 10 minutes beating on that little sucker. Heaven help you if yours is 3/8".
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
The purpose of the chain

is to keep the pull on the anchor as nearly horizontal as possible. 1/2 inch nylon three strand is stronger than 1/4 inch chain but you need the mass of the chain. You could attach a twenty pound weight to the nylon rode about twenty feet from the anchor and do away with the chain but that is unwieldy. You will really get better holding if you go to larger chain rather than to high test chain.
 
Jun 4, 2004
629
Sailboat - 48N x 89W
thecrosbygroup.com

The 1/4" Crosby “Lok-A-Loy Link” number “A-1337" (Stock #1015109) has a WLL of 4,300 Lbs, compared to 5/16" G40 chain at only 3,900 Lbs WLL. Goto page 177, under Chain & Accessories: http://catalog.thecrosbygroup.com/maininterface.htm
 
Jun 5, 2004
249
Hunter 36 Newburyport, MA
Thanks again, guys for your help

I realy appreciate the time you guys have taken in making some explicit, well-considered suggestions. Ross - I had found the "figure 8 links" at McMaster-Carr, but concluded that they wouldn't fit my chain gipsy. The 5/16 G4 I chose is not any smaller than the 5/16" BBB, just stronger, and is what Lewmar/Simpson-Lawrence recommends for my type 172 gipsy. RAD & Fred - This is the link I started with (I have some), but for which I wanted to find something with the same size/shape that wouldn't represent a 1-ton link in a 2-ton chain. Fred's comments on what G4 would be like to hammer raise an interesting point, though. Gord - This looks good, but in shape is like the "Figure 8 Link" at McMaster-Carr, and I don't think it'll pass the gipsy test. It does, however, lead me to think of other possibilities. I started looking for a way to buy 2 1-shot pails (or 100ft sections) and then join them permanently. I was looking at an alternative to buying a 3-shot half-drum (actually 275 ft) and either peddling the additional 75ft or using it for a 25ft extension to my mixed rode's 15ft of chain plus a 50ft section for tandem anchoring with the Fortress ahead of the Delta. (No more than the 200ft to be stowed in the bow chain-locker.) I think I'm coming to the conclusion that unless I want to carry all 200ft in a continuous section (with the weight penalty, and the risk-of-loss if I have to slip cable or abandon a fouled anchor), I'm best served by using a couple of 100ft lengths and holding at 100ft with a snubber while fastening the second 100ft to its bitter end and then continuing in cases when needing more than the 100ft of chain. The "Figure 8" type lifting links that are listed as reusable look like an attractive alternative to Beth Leonard's suggestion of 1/2" SS Wichard QuickLinks. She used only 75ft of chain around the world, backed-up with a Nylon rode she QuickLinked to it when needed, and said most of the time she was on all-chain with the 75ft. I could keep the mixed rode and one 100ft section in the bow locker, and stow the second 100ft elsewhere for better balance in sailing. With QuickLinks or the "Figure 8 Links" I could use mixed-rode + 100ft of chain, or 200ft of chain (or even mixed rode + 200ft of chain, unless I needed a second anchor). The big QuickLinks might be easier to handle on the bow, however, and you've put my mind at ease re mixed SS+galvanized corrosion issues in an earlier thread. I now have to decide if I want the security of knowing I can handle my intended maximum anchoring depth (40ft with 10ft tides) without connecting sections; or rather do I want the redundancy of two shots usable by themselves most of the time (plus my mixed rode backup). The economics and ballast-shifting ability of 2 sections seems very practical, while the single 2-shot solution offers a real security blanket that has manageable weight, but requires me to have other solutions for back-up stored elsewhere and higher risk of lo$$. My current interests are limited to the Gulf of Maine, and I wonder what your thoughts on these two choices would be based on your experiences in these waters? (This season I'm most interested in Casco Bay, but would like to plan for Penobscott, and eventually for Nova Scotia and - some day - Newfoundland/St Pierre/Michelon.) I'm not asking for anyone to make my decision for me, but I'd like to have a broader experience base than my own to draw upon in doing so. Can I further impose on your good natures for more free consulting? (I can offer you a beer if you ever come to Newburyport <g>.)
 
Jun 4, 2004
629
Sailboat - 48N x 89W
ISO Chain Grades

In ascending order of strength: Proof & BBB are Grade 30 (G3), High Test is G40/43, Transport is G70, and Hoisting is G80 or G100. By way of comparison, Working Load Limits for 1/4" Chains: G3 = 1300#, G4 = 2600#, G7 =3150# There's no listing for 1/4" Hoisting chain, so: 9/32" G80 = 3500#, & 9/32 G100 = 4300# 7/32" G80 = 2100#, & 7/32" G100 = 2700# For a chart of NACM Chain specifications, Goto: cruisersforum.com/photopost//showphoto.php?photo=1851 There;’s also a link to the NACM Specification (13 page pdf) download. http://cruisersforum.com/photopost//showphoto.php?photo=1851
 
Jun 5, 2004
249
Hunter 36 Newburyport, MA
Fred, my motivation is similar.

I've become very leery of the ability of the tapered rope-to-chain splice on my mixed rode to pass through the gipsy in an unattended, trouble-free fashion. Unless I'm tending it closely, it seems to occasionally not play nicely with the windlass. On the other hand, the chain portion lets-out and recovers in a totally trouble-free fashoion by my merely pushing the up or down buttons. So, given the no-chafe-on-the-bottom virtues of chain, I too decided to go all-chain (mostly) for convenience, and am considering adding a remote windlass control in the cockpit. (I single hand often, but I'd never trust the passage of that rope-to-chain splice through the gipsy from a distance.) From your photo, it looks like the volume taken up by your 200ft of chain is a pretty modest fraction of the locker. From your description of the weight, I guess it must be 1/4" G4? My required 5/16 G4 weighs 1.1lb/ft, so I'm looking at about 220 lbs vs your 140. However, I think my boat may have a higher displacement (14klbs, dry-boat), and my locker volume looks comparable to yours. My sinkage rate is 1174lbs-per-inch for loads balanced around the CG, so 220lbs is probably less than 1/2" down at the bow. I don't know what water depths you deal with in the PNW, but how much of your chain do you typically deploy? Is it more than half, or could you get away with 100ft most of the time?
 
Dec 2, 2003
4,245
- - Seabeck WA
100 feet most of the time.

Or less. But sometimes I let it all out, just for fun. And to check out the bottom of the locker. This too, is all new to me. :)
 
Mar 20, 2004
1,737
Hunter 356 and 216 Portland, ME
Chain in Maine

Hi Al, we haven't experienced the rope to chain splice problem you've mentioned, but we have had major issues with chain castles on our 356-we should compare notes! we have 35 ft of g4 and 250 feet of nylon on a 35lb delta and it's been fine in Maine, even in some heavy blows. We cruise Casco and Penn Bay, and everyone in our club (Maine Hunter Sailing Association, check us out at WWW.Mainehuntersailing.com) uses a rope/chain rode.FYI, we're cruising to Penn bay, MDI this summer for 2 weeks starting July 15 Chuck Wayne H356 WWW.Escape
 
Jun 5, 2004
249
Hunter 36 Newburyport, MA
Chain castles in H356/H36 locker

Hi, Chuck - Do we have the same anchor locker configuration? I would imagine so, so I'd very much like to hear more about your chain castling with the 35ft of chain. Does your chain lie unused and without fresh water rinses for long periods? Do you let it fall on top of the nylon or have you segregated it to one side? On my H36 I kept the heavy plastic bag that my mixed rode came in and re-flaked the 9/16" nylon into it, stacked upright to the port side of my locker. The windlass rate is slow enough for me to re-flake it into the bag, and the 15ft of G4 just falls next to the bag. I'm very often a slip-user, so it has sat for long periods. However, I'm a fanatical fresh-water bow-rinser when in a slip, due to paranoia about maintaining the reliability of my Furlex drum. So far (it's only been a year), no crusty chain blobs to unstick. Can you elaborate a bit? By the way, do we have the same Sprint Atlantic gipsy-plus-drum vertical windlass?
 
Mar 20, 2004
1,737
Hunter 356 and 216 Portland, ME
H356 chains

HI Al, I'm in a slip, and I've got a freshwater washdown in the anchor locker and I'm also fanatic about washing the rode. we do separate the chain and nylon, but we get castles right where the chain falls out of the windlass. I'm building a guide tube to route the chain deeper in the locker. we've got the same windlass-it's a special version made for Hunter. took Seacoast 3 years to get it
 
Status
Not open for further replies.