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Forum: Anchoring & Mooring

16-10-2019, 08:52

Replies: 59

G70 chain vs G4

Views: 12,918

Posted By a64pilot

G70 chain vs G4

The Mantus swivel due to the shape of its pin doesn’t require an enlarged link to maintain strength.
The Mantus S2 swivel breaks at 21,000 lbs and 5/16” G70 chain breaks at 14,000 lbs.

However...

Forum: Anchoring & Mooring

15-10-2019, 11:38

Replies: 59

G70 chain vs G4

Views: 12,918

Posted By a64pilot

G70 chain vs G4

Your going to disagree of course, but if your anchor chain has never been bar tight, and you have never had your boat yaw enough to be jerked by the chain enough so that you can feel the jerk in the...

Forum: Anchoring & Mooring

10-10-2019, 20:01

Replies: 59

G70 chain vs G4

Views: 12,918

Posted By a64pilot

Re: G70 chain vs G4

I can find that even some G80 chain is 4130, but oddly I’ve not found that 43 and 70 are.
It may well be that some is and some isn’t, depending on manufacturer, I found that is the case for 80...

Forum: Anchoring & Mooring

09-10-2019, 17:28

Replies: 59

G70 chain vs G4

Views: 12,918

Posted By a64pilot

Re: G70 chain vs G4

I can tell you that in 40 kts or so with a 10 or 12 to 1 scope out, my chain is tight. I didn’t dive it of course, but you can tell what straight out and tight is.
So certainly in severe winds, say...

Forum: Anchoring & Mooring

09-10-2019, 13:06

Replies: 59

G70 chain vs G4

Views: 12,918

Posted By a64pilot

G70 chain vs G4

I don’t believe so, I believe that grade 40/43 and grade 70 are both mild steel, most likely 4130 or maybe 4340 steel.
The difference is heat treat level, and always, always, always when you gain...

Showing results 1 to 5 of 5

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