| Re: Mainsheet blocks
[Re: Mac05]
#70740 04/03/06 12:00 PM 04/03/06 12:00 PM |
Joined: Sep 2005 Posts: 1,187 38.912, -95.37 _flatlander_
old hand
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old hand
Joined: Sep 2005
Posts: 1,187 38.912, -95.37 | I'll throw another size in, we just purchased a 5/16" main sheet. Use a line designed specifically for main sheets. Some of the low stretch (stiff) lines will not wrap around a smaller diameter block as easily as a softer version. In other words it is too stiff to properly grip the blocks. I think you'll find the advantage of easier use in reducing diameter only. Be very careful (or ask an expert/retailer) before purchasing a "high tech" line.
Sorry for no "specific" answer, there are a lot of different brands and "families" available.
John H16, H14
| | | Re: Mainsheet blocks
[Re: mmiller]
#70742 04/04/06 07:22 AM 04/04/06 07:22 AM |
Joined: May 2003 Posts: 50 Roanoke, VA mattp
journeyman
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journeyman
Joined: May 2003
Posts: 50 Roanoke, VA | Do you turn on the ratchet? You can turn off the ratchet? You mean on one of these?
(Insert Witty Signature Here)
1988 H16
| | | Re: Mainsheet blocks
[Re: mattp]
#70743 04/04/06 10:46 AM 04/04/06 10:46 AM |
Joined: Jan 2004 Posts: 1,884 Detroit, MI mbounds
Pooh-Bah
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Pooh-Bah
Joined: Jan 2004
Posts: 1,884 Detroit, MI | You can turn off the ratchet? You mean on one of these?
Yeah, it's the little black slide on the side. Mainsheets: New England Ropes - Salsa line New England Ropes8 mm = 5/16"; 9 mm = 3/8" Maffioli Swiftcord You can buy this in a number of places, but Hall Spars USA is the US distributor. Hall Spars | | | Re: Mainsheet blocks
[Re: mmiller]
#70746 04/05/06 08:48 AM 04/05/06 08:48 AM |
Joined: Jul 2005 Posts: 306 St. Louis, MO hobienick
enthusiast
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enthusiast
Joined: Jul 2005
Posts: 306 St. Louis, MO | Just to clarify, when you have a 6:1 purchase if you pull on the line with 100 lbs of force the system exerts 600 lbs of force on the sail. I know this is obvious but you never know questions people will not ask.
So, the "holding power" everyone speaks of is really what you feel on the line.
Also, the shape of the first pulley the line goes into will determine how much tension you need to keep on the sheet to hold it into place with the ratchet. As well as the torque the ratchet mechanism is rated for. I know on my system (I don't know the part numbers) the first pully "grabs" the line a little bit so I only need to keep enough tension on the line to seat it in the pulley when the ratchet is on.
I just wnated to make sure everyone is talking about the same thing.
Nick
Current Boat Looking for one
Previous Boats '84 H16 '82 H18 Magnum '74 Pearson 30 St. Louis, MO
| | | Re: Mainsheet blocks
[Re: mmiller]
#70749 04/05/06 10:14 PM 04/05/06 10:14 PM |
Joined: Dec 2005 Posts: 321 Albuquerque NM Banzilla
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Posts: 321 Albuquerque NM | Ok, as I understand it, the 2629 and 2630(becket) are ratchmatic (load sensing ratchet) no need to be able to reach the block to turn on off the ratchet. Yes carbo is lighter but also SHOULD be easier to use. From the harken website http://www.harkenstore.com/uniface.urd/SCCYSPW1- Ratchet senses load and engages automatically - Shifts seamlessly between ratchet and light air modes - Adjustable ratchet engagement - Free release under light load the 194 and 2194 (hardest to adjust the angle on) have a on/off switch This is why I am going with this block price is only a small percentage more. Sam
[b] Sail Like you have a Pair
| | | Re: Mainsheet blocks
[Re: mbounds]
#70750 04/05/06 11:11 PM 04/05/06 11:11 PM |
Joined: Dec 2005 Posts: 321 Albuquerque NM Banzilla
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Joined: Dec 2005
Posts: 321 Albuquerque NM | GREAT THREAD!!!!!!
Now, this may sound somewhat lame, but, are there "standard" line colors for main and jib sheets? I am thinking of a red/black color theme for my H16. I am ALMOST more interested in line color than quality. I really want to use as close to solid black for the main sheet and red for Jib.
So it is either the Maffioli mentioned here or the New england Ropes Sta-Set series. I like the Sta-set because it looks cooler.
What say all you sailers?
Thanks Sam
[b] Sail Like you have a Pair
| | | Re: Mainsheet blocks
[Re: mbounds]
#70752 04/06/06 02:09 PM 04/06/06 02:09 PM |
Joined: Dec 2005 Posts: 321 Albuquerque NM Banzilla
enthusiast
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Joined: Dec 2005
Posts: 321 Albuquerque NM | With that Information, now all I have to do is wait for the Tax refund to hit the account and than with a few clicks here and few clicks there here a click there a click wait few days and the boat has a few new parts. And that can't be a bad thing. Sam PS. Anybody looking for a really old (32 years)set of seaway main blocks??
[b] Sail Like you have a Pair
| | | Re: Mainsheet blocks
[Re: mmiller]
#70753 04/06/06 04:40 PM 04/06/06 04:40 PM |
Joined: Apr 2005 Posts: 32 Midland Mac05 OP
newbie
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OP
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Joined: Apr 2005
Posts: 32 Midland | Sam - I think the 194's are easier to adjust the angle on. From Matt's previous post: Get the H194 lower and the Carbo upper H2640. Standard on new Hobie 16's.
We do not recommend the Carbo ratchet lower. It is a PITA to adjust the jaw angles.
| | | Re: Mainsheet blocks
[Re: Mac05]
#70754 04/06/06 05:19 PM 04/06/06 05:19 PM |
Joined: Dec 2005 Posts: 321 Albuquerque NM Banzilla
enthusiast
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Joined: Dec 2005
Posts: 321 Albuquerque NM | Sam - I think the 194's are easier to adjust the angle on. From Matt's previous post: Get the H194 lower and the Carbo upper H2640. Standard on new Hobie 16's.
We do not recommend the Carbo ratchet lower. It is a PITA to adjust the jaw angles.
Mac05, I agree: 194 - easiest to adjust angle - have to touch block to turn on/off ratchet 2600 series harder to adjust angle - (should be) auto on/off load sensing ratchet w/ adjustable sensing. 2100 series ratchets - seems to be Major Pain to adjust angle and have to touch block to turn on off ratchet. Since I will probably not be racing and more of the set it and forget it type, the 2600 series seems be the best bet. If it were a matter of $60 - $70 differance, I would go with the 194 but at at less than $40 diff, I like the ratchmatic. Now, is there a need for the top blocks to be ratcheted(ratchmatic)? What would be gained or lost? Thanks Sam
[b] Sail Like you have a Pair
| | | Re: Mainsheet blocks
[Re: mmiller]
#70756 04/07/06 05:01 AM 04/07/06 05:01 AM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
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Carpal Tunnel
Joined: Jun 2001
Posts: 9,582 North-West Europe | The ratchet adds drag to the line holding power. I can't imagine the need to have two ratchet sheaves. Too much drag possibly. You also risk having the ratchets on or off at differing times. I would rather have control over when they are on or off.
Having an upper and lower ratchmatic will negate the need for the cleat totally. It is sometimes used be serious racing crews on modern boats to allow constant fine tuning of the mainsheet with very little line pull when not trimming. The same trick with double auto ratchets is used on spinnaker sheet, almost universally by now and it works great there. No trouble with ratchets turning off and on a t different times as they simple won't do that. The top ratchet will always engage before the lower one and disengage later. The difference in sustained static holding power is massive. You go from about 1:6 on the partly wrapped lower ratchets to 1:60 of the combo. It will almost feel as it the sheet is in a cleat. But when you push the sheet towards the blocks then the line will run through the mainsheet system rather quickly. You'll have to use AUTO ratchet for both blocks otherwise it won't work well. Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | | Re: Mainsheet blocks
[Re: Wouter]
#70757 04/07/06 09:42 AM 04/07/06 09:42 AM |
Joined: Dec 2005 Posts: 321 Albuquerque NM Banzilla
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Posts: 321 Albuquerque NM | Thanks Wouter,(sort of)
I thought I was ready to order, but now I have to think about this part also,(probably not too long tho).
If I wanted a quad block on top, how would you set that up with the ratchmatic? Harken does not have a quad or trip ratchmatic without a cam, they do have single and double. A trip none ratchmatic with a single side by side some how?
Maybe I missed the quad alltogether.
Thanks Sam
[b] Sail Like you have a Pair
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