MRS, what kind of block?

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kurz
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MRS, what kind of block?

Post by kurz »

Hello,
Yeterday I am noticed that the block of my MRS :macm: is completely not working anymore. It does not turn under load. The bearings are cracked.

What kind of block shall I buy? What loads? What kind of bearing?


Thanks all

Kurz
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Russ
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Re: MRS, what kind of block?

Post by Russ »

Can you post a photo? My MRS has no blocks. It has a winch but not block.
--Russ
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kurz
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Re: MRS, what kind of block?

Post by kurz »

here
[https://shop.bwyachts.com/product-p/3316-1v0.htm]

The line goes from the winch to the block then to the mast.
leefrankpierce
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Re: MRS, what kind of block?

Post by leefrankpierce »

Sounds like the halyard has been setup to run back to the cockpit.
Much more convenient than running up to the mast, but probably not stock.
EDIT:
Mast Raising System, sorry I thought the MRS was the name of your boat!
I am sure any reasonably sized block should do it.
My system has multi-pulley blocks for more mechanical advantage.
Looks like a left over boom sheet setup.
Last edited by leefrankpierce on Wed Feb 21, 2024 6:31 pm, edited 1 time in total.
26X in Dallas Fort-Worth area Texas
Slip at Eagle Mountain Lake
:macx:
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NiceAft
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Re: MRS, what kind of block?

Post by NiceAft »

This is the block on my MSR, and I do not see any identifying numbers.
Image
Ray ~~_/)~~
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kurz
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Re: MRS, what kind of block?

Post by kurz »

Thanks NiceAft, Yes, it is exactely this block. It has kind of bearings inside.
I could also watch the line. What load can the line hold (braking loads)? I think it is a cheap line.
Or the winch...
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Russ
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Re: MRS, what kind of block?

Post by Russ »

NiceAft wrote: Wed Feb 21, 2024 1:25 pm This is the block on my MSR, and I do not see any identifying numbers.
Image
That's it! My memory is failing. That's the block on mine also.

Roger wasn't known to install top shelf hardware on our boats. Probably why Kurz has failed.

I would replace it with a decent single block from any chandlery.

Something like this https://www.westmarine.com/lewmar-50mm- ... 61718.html
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kurz
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Re: MRS, what kind of block?

Post by kurz »

Finally I installed a block 2000/1000kg, somewhat bigger diameter than original.

Had good feeling.

Also the tube bents little, so I put all kind of tube inside the original tube to make it stronger.
Worked fine so far...
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Re: MRS, what kind of block?

Post by OverEasy »

Hi Kurz!

Just a quick couple of questions….
> What year of manufacture is your Mac26M?
> How often do you use your MRS ( mast raising system)?

If others want to chime in that would be great!

I’d like to get an idea of how often folks use their MRS over the years and how the system is holding up for them.

Thanks!

Best Regards
Over Easy 😎😎🐩🐈
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kurz
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Re: MRS, what kind of block?

Post by kurz »

My :macm: is 2011

I normally trailer 2 times a year.

Roller Genoa is installed also when using MRS.
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dlandersson
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Re: MRS, what kind of block?

Post by dlandersson »

"Block"? or "pully"? 8)
kurz wrote: Wed Feb 21, 2024 4:17 am Hello,
Yeterday I am noticed that the block of my MRS :macm: is completely not working anymore. It does not turn under load. The bearings are cracked.

What kind of block shall I buy? What loads? What kind of bearing?


Thanks all

Kurz
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NiceAft
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Re: MRS, what kind of block?

Post by NiceAft »

I am the original owner of a 2005 :macm: . The MRS is engaged about four times a year. It too is original to 2005. As with Kurz, “Roller Genoa is installed also when using MRS”.
Ray ~~_/)~~
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