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Search: Posts Made By: Mark Johnson
Forum: SparTalk 04-24-2011, 04:59 PM
Replies: 25
Views: 22,136
Posted By Mark Johnson
Dux Pre tension

Hi Brian,
Your explanation about my Dux runners "seeming" to have a larger temperature induced expansion differential than the wire ones did, being partly because, unlike the rest of the rig, I...
Forum: SparTalk 03-29-2011, 10:43 AM
Replies: 25
Views: 22,136
Posted By Mark Johnson
Issues with synthetic rigging?

Can any of you guys with years of experience using synthetic rigging, fill me in on the following?

The comparison that I would like to see between Dux and 316 SS wire, is @ 18 or 20 years old. Of...
Forum: SparTalk 03-28-2011, 09:55 AM
Replies: 6
Views: 10,383
Posted By Mark Johnson
Hi John, The comparison that I would like to see...

Hi John,
The comparison that I would like to see between Dux and 316 SS wire, is @ 18 or 20 years old. Of the countless thousands of boats in our area, (Eastern NC), there has only been one...
Forum: SparTalk 03-02-2011, 03:18 PM
Replies: 4
Views: 5,628
Posted By Mark Johnson
The boat that I built previous to the last /...

The boat that I built previous to the last / current one, was a Seaclipper 28 trimaran. It had a massive tabernacle, made of a heavy aluminum casting. It was part of a mast kit, and I think that...
Forum: SparTalk 02-22-2011, 07:33 AM
Replies: 1
Views: 2,622
Posted By Mark Johnson
I'm not sure if this is the same product, as I am...

I'm not sure if this is the same product, as I am not familiar with the 2000 part, but.. When we installed our nuts n bolts ports on our self built Searunner tri, I called GE who made the Lexan we...
Forum: SparTalk 02-17-2011, 06:59 AM
Replies: 14
Views: 7,013
Posted By Mark Johnson
Really? Interesting... Stan sure knows his...

Really? Interesting... Stan sure knows his stuff!

When my boat was consuming zincs (once a week!) it did not yet even HAVE a dc system or connection to the dock. It was however in a marina that...
Forum: SparTalk 02-16-2011, 02:45 PM
Replies: 14
Views: 7,013
Posted By Mark Johnson
Allen, great link... it's like the Rosetta Stone!...

Allen, great link... it's like the Rosetta Stone! (My previous post was a response to Benz BTW)

I agree with you about not grounding your mast's lightning protection to your through hulls! I...
Forum: SparTalk 02-16-2011, 02:14 PM
Replies: 14
Views: 7,013
Posted By Mark Johnson
Valid points. If you look for a consensus in...

Valid points. If you look for a consensus in say... the last 20 years of studies, from far different sources, there is no statistical evidence that "proper grounding" increases strikes. (I'm talking...
Forum: SparTalk 02-16-2011, 05:56 AM
Replies: 11
Views: 12,406
Posted By Mark Johnson
Jim, this will not help out your "inner...

Jim, this will not help out your "inner engineer", and I eventually dropped out of mechanical engineering, but...

With larger boats this is a valid point to try to figure out. With your 31'er...
Forum: SparTalk 02-16-2011, 05:28 AM
Replies: 14
Views: 7,013
Posted By Mark Johnson
One concern that I have not seen addressed... ...

One concern that I have not seen addressed... When I built our boat, I was an ABYC member, and I "lightning grounded" the mast and rigging according to ABYC standards. In the 15 years "out there"...
Forum: SparTalk 12-22-2010, 05:45 AM
Replies: 9
Views: 4,091
Posted By Mark Johnson
Stumble, For my rig to result in a freefall to...

Stumble, For my rig to result in a freefall to the deck, the 1,800 WL blocks would have to fail. I would have to not only loose my grip on the rope in my hand, (which has almost no load on it), but...
Forum: SparTalk 12-21-2010, 05:29 PM
Replies: 9
Views: 4,091
Posted By Mark Johnson
Bob, The blocks I use are Harken #s 1549 and...

Bob, The blocks I use are Harken #s 1549 and 1550. They have a WL of 1,800 lbs. and both have a "black" sliding switch for on and off. Neither will reverse, but on orrigional set up of your rig, you...
Forum: SparTalk 12-21-2010, 10:36 AM
Replies: 9
Views: 4,091
Posted By Mark Johnson
Bob, I leave the upper ratchet block engaged at...

Bob, I leave the upper ratchet block engaged at all times. I CAN come down with both engaged, but slowly. It will even stop at times, then I would give the leg of the line in my hands a little shake....
Forum: SparTalk 12-20-2010, 03:01 PM
Replies: 9
Views: 4,091
Posted By Mark Johnson
I have hoisted myself exclusively useing a 3 to 1...

I have hoisted myself exclusively useing a 3 to 1 block set up for 25 years, with no problems. My hoisting rig is made up of two Harken ratchet blocks (with the little switches), and Regatta braid...
Forum: SparTalk 10-22-2010, 12:58 PM
Replies: 7
Views: 8,103
Posted By Mark Johnson
On our 34' Searunner I use a SS "fork...

On our 34' Searunner I use a SS "fork style" chain hook on our 1/4" HT chain for setting the anchor, (or pulling it out if it is really buried). I feel that for our smaller size chain it is...
Forum: SparTalk 10-11-2010, 09:39 AM
Replies: 0
Views: 4,292
Posted By Mark Johnson
More about Dyform & Dux rigging options...

Followthrough about Dyform wire & Dux rigging

--------------------------------------------------------------------------------

Thanks Allene for the "new thread" tip... My being amoung the...
Forum: SparTalk 10-10-2010, 06:17 PM
Replies: 8
Views: 7,295
Posted By Mark Johnson
Followthrough about Dyform wire & Dux rigging

Thanks for the response Brion, I appreciate your help.
My appologies for computer ignorance. I still don't get how to start a new thread, or if there is a correct one that my questions should've...
Forum: SparTalk 10-10-2010, 07:18 AM
Replies: 9
Views: 8,199
Posted By Mark Johnson
Compact strand wire?

Mark Johnson
Junior Member Join Date: Oct 2010
Location: New Bern NC
Posts: 3

Rephraising the question...

--------------------------------------------------------------------------------

I...
Forum: SparTalk 10-09-2010, 08:34 AM
Replies: 9
Views: 8,199
Posted By Mark Johnson
Rigging with Dux questions...

#637
Mark Johnson
Registered User





Join Date: Sep 2009
Location: New Bern NC
Forum: SparTalk 10-09-2010, 05:07 AM
Replies: 8
Views: 7,295
Posted By Mark Johnson
Rephraising the question...

I found the answer to some of my question... (at the bottom). This leaves me with one final question about using Compact Strand Wire.

I see that the Issue of UN screwing my StaLocs is...
Forum: SparTalk 10-08-2010, 12:47 PM
Replies: 8
Views: 7,295
Posted By Mark Johnson
Compact Strand wire as an excessive stretch solution?

Hi guys, This s unrelated to the previous post... hope it is appropriate to put it here?

Brion, I am a small time rigger here in New Bern NC, and I have a problem & question about the rig on my...
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