| Re: Mainsheet blocks
[Re: mmiller]
#70722 03/29/06 03:49 PM 03/29/06 03:49 PM |
Joined: Apr 2005 Posts: 32 Midland Mac05 OP
newbie
|
OP
newbie
Joined: Apr 2005
Posts: 32 Midland |  Thanks Matt and John - This is exactly the info that I need. Cheers, Mac | | | Re: Mainsheet blocks
[Re: PTP]
#70724 03/30/06 10:03 AM 03/30/06 10:03 AM |
Joined: Sep 2005 Posts: 1,187 38.912, -95.37 _flatlander_
old hand
|
old hand
Joined: Sep 2005
Posts: 1,187 38.912, -95.37 | In other words, to have a convertable 6:1/7:1 the upper (triple) block would need to have a becket. Add a standup block, mounted through the hardware that attaches the main sheet cleat, to your lower block. Your cleat is on the bottom, you add the extra block on top of the "plate" that supports the cleat. You're spending for an upper triple w/becket and one small block only.
Another option is the new "carbo" triple as the upper, and instead of buying with a becket, run the tail of the main sheet through the hole in the center of the blocks and dead end, in effect same as w/becket, but maybe a few more bucks.
John H16, H14
| | | Re: Mainsheet blocks
[Re: Banzilla]
#70726 03/30/06 01:18 PM 03/30/06 01:18 PM |
Joined: Mar 2002 Posts: 3,355 Key Largo, FL and Put-in-Bay, ... RickWhite 
Carpal Tunnel
|

Carpal Tunnel
Joined: Mar 2002
Posts: 3,355 Key Largo, FL and Put-in-Bay, ... | I think the Ratchamatics are awesome myself and use them on every boat I have had since they came out. On my F16 I am using the 8:1 Ratchamatic with 1/4" mainsheet. Sounds small,but with the 8:1 purchase it is easy to sheet and it also runs out very well when you ease the sheet.
I know in days of yore, we may have used as large as 7/16" line, and for sure 3/8" But with the new advanced blocks it is really not necessary and smaller line works really well.
I even use 1/4" on the Wave. Great for the puffs and when wheeling around the weather mark. Others are having to pull their sheets through the block, while mine just flys out and the sail is set within a boat length for downwind. Rick | | | Re: Mainsheet blocks
[Re: Banzilla]
#70727 03/30/06 02:26 PM 03/30/06 02:26 PM |
Joined: Jun 2001 Posts: 1,252 California mmiller
veteran
|
veteran
Joined: Jun 2001
Posts: 1,252 California | Are both the ratchmatic and the ratchet carbo lowers a pain? What makes them harder to adjust? Isn't it a case of set it and forget it? The jaw angle adjustment on the original ratchets is far simpler. They have not found a way to do this on the carbo version. Maybe not as big a deal if you set it and forget it, but I like to change the angle for some conditions. If it is really blowing, I may want to get the blocks to release easier, so place the jaws higher. It is personal preference. I see no advantage to the carbo lower. That is why we use the standard triple lower and carbo upper in combination. | | | Re: Mainsheet blocks
[Re: mmiller]
#70728 03/30/06 05:18 PM 03/30/06 05:18 PM |
Joined: Nov 2005 Posts: 1,203 uk TEAMVMG
veteran
|
veteran
Joined: Nov 2005
Posts: 1,203 uk | The ratchamatic lower is a nightmare! My son had a new 16 at the Carnac Eurocat regatta last year and spent the whole event trying to get the cleats at the right angle, got all stressed about it and didn't enjoy the event at all! We spent some time with little plastic wedges and have eventually got it right now [one setting for all winds] For some reason, this flashy/expensive piece of kit does not hold the cleat at the right angle.
Paul
teamvmg.weebly.com
| | | Re: Mainsheet blocks
[Re: Banzilla]
#70730 03/30/06 07:31 PM 03/30/06 07:31 PM |
Joined: Jun 2001 Posts: 1,252 California mmiller
veteran
|
veteran
Joined: Jun 2001
Posts: 1,252 California | I like the adjustments on the 194 Hexaratchet triple... ![[Linked Image]](http://www.harkenstore.com/images/194.jpg) You just ease out the screw in the slot on either side. Make the adjustement up or down and re-tighten. It is easy to see you are in the 1 to whatever position. I do not like the adjustment on the 2630 Carbo triple... ![[Linked Image]](http://www.harkenstore.com/images/2630.jpg) You have to back out the center screw to get both sides of the system out of its indents. You then move and re-seat the side plates. Then tighten the screw. There is no good way to see how far you moved it and it is a disaster if you unscrew the thing too far. The 2141 would be even harder to deal with. | | | Re: Mainsheet blocks
[Re: Mac05]
#70731 03/30/06 10:10 PM 03/30/06 10:10 PM |
Joined: Feb 2005 Posts: 4,119 Northfield Mn Karl_Brogger
Carpal Tunnel
|
Carpal Tunnel
Joined: Feb 2005
Posts: 4,119 Northfield Mn | On the strenght end: I'm no weakling, and when it really blowing, and I've been out a long time I struggle with sheating. I have a 6:1 harken system w/ 3/8 sheat. Most of this is probably because I tend to go out in heavy winds, and it all on lakes, or the Mississippi. Lot's of puffs and I never cleat the main. Just food for thought if you concerned with the strenght issue.
I'm boatless.
| | | Re: Mainsheet blocks
[Re: Tom Korz]
#70734 03/31/06 02:17 PM 03/31/06 02:17 PM |
Joined: Jul 2005 Posts: 306 St. Louis, MO hobienick
enthusiast
|
enthusiast
Joined: Jul 2005
Posts: 306 St. Louis, MO | Remember, the more purchase you have in you main block system, the more line it will take to sheet in and longer it will take to sheet out. 6:1 is a good balance between the mechanical advantage you want the the ability to sheet out in a reasonable amount of time.
Nick
Current Boat Looking for one
Previous Boats '84 H16 '82 H18 Magnum '74 Pearson 30 St. Louis, MO
| | | Re: Mainsheet blocks
[Re: hobienick]
#70735 03/31/06 03:49 PM 03/31/06 03:49 PM |
Joined: Dec 2005 Posts: 321 Albuquerque NM Banzilla
enthusiast
|
enthusiast
Joined: Dec 2005
Posts: 321 Albuquerque NM | Ok, the 6:1 or 7:1 is probably all you need for purchase, but what about the breaking strenght of the blocks them selves?
model h194
Shackle pin dia. (in) 1/4 SWL (lb) 500 Breaking strength (lb) 2000 Use with 004 - 5:1 / 048 - 6:1
verses the h2630 at SWL (lb) 1800 Breaking strength (lb) 4500 Holding power w/180 degree wrap 50 lb (23 kg) 10:1
I assume the SWL is the swivle breaking strenght?
Is this an issue on a h16?
Sam
[b] Sail Like you have a Pair
| | | Re: Mainsheet blocks
[Re: Banzilla]
#70737 04/01/06 08:35 AM 04/01/06 08:35 AM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
|
Carpal Tunnel
Joined: Jun 2001
Posts: 9,582 North-West Europe |
SWL = sustained working load if I remember correctly. You can really put the blocks under these loads and over whithout worrying about breaking them. Maximum breaking loads are typically alot higher. If passed swl you'll just wear the blocks down quicker which is still many many years. In effect SWL doesn't mean much.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | |
|
0 registered members (),
301
guests, and 47
spiders. | Key: Admin,
Global Mod,
Mod | | Forums26 Topics22,406 Posts267,061 Members8,150 | Most Online2,167 Dec 19th, 2022 | | |