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#1 General discussion » Yanmar 2GM Transmission Slippage; De-glazing KM2-A Clutch Cones » 2024-07-24 07:58:07

Hugh Morrin
Replies: 0

Most C&C 27s are equipped with the Atomic 4 gasoline engine, but some later Mk 3s and Mk 4s were shipped with Yanmar 2GM diesel engines, particularly those that were being delivered to the U.S. The Yanmar engine is paired with a Kanzaki KM2-A transmission bolted on to the back of the engine. My 1981 Mk 3, #894, is so equipped.

There is a well-documented condition (see references below) which results in the transmission slipping and clunking in forward gear. Typical symptoms are that upon shifting into forward, some thrust is realized, but increasing engine RPM does not result in an increase in thrust. Sometimes there is a clunking sound, and then, sometimes, the transmission fully engages and normal thrust is achieved. The problem is not seen in reverse and it is not a cable-adjustment issue. The fix (more on that below) involves removing the transmission from the engine.

My first question for this group is, has anyone disconnected and removed the KM2A transmission from their Yanmar 2GM on a C&C 27, without moving the engine? It appears that there would be enough space, especially if one has a plastic coupling installed, as we do. One could also slide the prop shaft aft. I'm really hoping that we can remove the transmission, without having to move the engine. If anyone has done this, insight and suggestions from your experience would be much appreciated.

For those interested, these posts discuss this issue, commonly referred to as de-glazing the clutch cones:
https://www.cruisersforum.com/forums/f5 … 07948.html
https://www.cruisersforum.com/forums/f5 … Engine.htm:

For anyone undertaking this, the following two YouTube videos created by an S2 85 owner provide invaluable information on the process of disassembling and re-assembling the transmission:
https://youtu.be/UNSW5S8EXus
https://youtu.be/p3eMGM8w0PE

According to the above, the Yanmar 2GMF, 2GM20, 2GM20F, and 1GM series engines all use the same transmission.

The only discussion I found on this forum on this subject is this very dated post, http://www.cc27association.com/f4/viewtopic.php?id=162, but the two replies did not lead the original poster in the right direction.

See photos below.

mini_BZ-Transmission-and-prop-shaft-from-starboard-side-1.jpgmini_BZ-Transmission-and-prop-shaft-from-starboard-side-2.jpgmini_BZ-Transmission-and-prop-shaft-from-port-side-1.jpgmini_BZ-Transmission-and-prop-shaft-from-port-side-2.jpgmini_BZ-Transmission-and-prop-shaft-from-aft.jpg

#2 Re: General discussion » Fuel Tank Replacement » 2024-07-24 07:31:51

We installed a 25L Vetus Fuel tank in our Yanmar-powered 1981 Mk 3 back in 2008. I love it. We burn ~50L of diesel, at most, a year, so we don't have to worry about carrying around 2-year old gas. I marked the side of the tank with a marker in 2L increments, so with a quick glance, I can see very accurately how much fuel we have. About 10 years after installation, I removed the tank, poured the 5L of diesel that remained in the tank into my buddy's truck, and inspected it for the kind of sludge that can sometimes collect in tanks. It was very clean. I nevertheless washed it out with hot water, and re-installed it. We've never had any problems or issues.

The tank we purchased is the one shown at https://webshop.vetus.com/en/product/ft … -fuel-tank. Price from https://www.thechandleryonline.com in 2008 was $189.84 + tax.

See attached photos.

mini_BZ-Fuel-Tanks---Vetus-Original-DdL6.jpgmini_BZ-Fuel-Tank---Vetus-Installed-1.jpgmini_BZ-Fuel-Tank---Vetus-Installed-2.jpgmini_BZ-Fuel-Tank---Vetus-Installed-3.jpg

#4 Re: General discussion » C&C 27 Mark 111 -- to a good home. » 2023-09-16 13:32:10

Could you please provide a lot more information on the boat that you are offering? Is it currently in sailing condition? What sails are included? Is it a Yanmar or Atomic 4? Is a cradle or trailer included? At https://nsc.ca/nsc_racing/cc27/cc27_pre … cklist.doc, you'll find a checklist of items that purchasers might be interested in.

Also, you may wish to provide a means for people to contact you if they are interested. Forum members who are logged in can reach message you through, but even I had forgotten that when someone asked me how to contact you.

Thank you.

#6 Re: General discussion » Aragorn is for Sale » 2022-10-05 12:46:52

Boat has been bought and has now joined the largest C&C 27 Fleet in the country, at the Nepean Sailing Club, in Ottawa.

#7 Re: General discussion » Props for Sale » 2022-07-14 13:29:45

Are those props for a C&C 27? We purchased a Martec folding prop for our 1981 Yanmar-powered C&C 27-3 and they recommended a RH 14” D x 12P-3, for our 7/8” dia shaft.

Hugh Morrin

#8 Re: General discussion » Number 3/100%. Headsail » 2021-10-22 16:02:35

Sail is sold. Jeff, I hope you get lots of use out of it.

#9 Re: General discussion » Advice on a Sun Shade? » 2021-10-14 17:52:03

I see my post from 15 years ago has bumped up on the list again. For a simple and effective $15 solution, see https://www.flickr.com/photos/124912330 … /lightbox/.
Consists of:
  • 1 piece of 2x2 just short enough to fit in the V-berth or along the starboard settee, with a screw hook that hooks on the backstay.
  • 3 pieces of 3/16" line running from 2x2 forward; one to the mast, the other to the outer/upper shrouds.
  • 1 cheap tarp; I believe dimensions are 8' x 12' or perhaps 10' x 14'.
  • 1/8" lines tied to lifelines.
Sets up in a matter of minutes.

#10 Re: General discussion » Boom Gooseneck and/or boom assembly » 2021-10-14 17:37:59

I have a complete/assembled boom from a 1978? MK 3. Not sure if it would work, or if it would be worth shipping, but I could send you photos if you're interested, on the weekend. My email address is available at the bottom of nsc.ca/cc27.

Cheers,

Hugh

#11 Re: General discussion » Number 3/100%. Headsail » 2021-10-14 17:29:48

Jeff, I have a UK #3 for sale, posted at https://nsc.ca/classifieds/. Let me know if you're interested.

#12 General discussion » Wanted: Used C&C 27-3 Mast » 2018-08-13 11:47:24

Hugh Morrin
Replies: 0

Anyone know of anyone parting out a C&C 27? While we have no immediate need for one, we might be interested in picking up a used mast as a spare for our fleet in Ottawa. Sadly, I'm sure there are more than a few C&C 27s heading to the dump these days, and it would be a shame to see a decent mast scrapped. A few years ago, we bought a mast from someone who's boat was scrap; it proved quite valuable later that same year when a boat in our fleet lost their mast in a collision. Thanks in advance.
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#13 Re: General discussion » 2013 Regatta » 2013-11-12 13:14:15

Hi Dean,

This sounds like a really interesting event, worthy of consideration! I'll discuss it with the crew. Maybe Larry would even like to bring Debbie and Yogi Bear out to join the fun?

BTW, you might want to update the title of your post, or perhaps start a new one. I'm an active C&C 27 racer (see link below), but a somewhat infrequent visitor to the forum, and I almost overlooked your post. Perhaps something like "Race the Cape, 2014: Racing on Cape Breton's Bras d'Or Lakes" might garner a little more attention?

We'll give this some thought and get back to you.

Cheers,

Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#14 General discussion » Stanchion Base Plates - Bulk Order » 2013-11-08 11:47:13

Hugh Morrin
Replies: 0

About a dozen Ottawa area C&C 27s have participated in a bulk order for aluminum stanchion base plates. After years of loads on the stanchions, many boats develop gelcoat cracks underneath the stanchion bases, and in some cases this can puncture through the fibreglass, as shown at http://www.cc27association.com/fixes/various/source/stanchion_base_bad.html . Our solution was to install aluminum plates under the stanchion bases, as shown at http://www.cc27association.com/fixes/various/source/stanchion_baseplate.html . This is a very common mod to C&C 27s. The plates are made per the sketch posted at http://www.cc27association.com/pdf/stanchion_baseplates.pdf, and are suitable for the later model Mark 3s and Mark 4s that have the stanchion bases mounted to the toe rails. The larger plate shown in the sketch goes under the stanchion inboard of the toe rail; the smaller plate is just used as a spacer on the outside of the toe rail.

If anyone else is interested in ordering some of these plates, they may wish to contact Kevin Sheldrick at Precise Metafab, 613-831-1919. While supplies last, Kevin is selling these for $9.00 / set, plus HST and shipping via Canada Post. One “set” of plates is required for each stanchion. Six sets (the minimum order) are required for the three free standing stanchions on each side; if you want to do under the bow and stern pulpits that mount to the rail, you’ll need 12 sets. (We did under the free-standing stanchions at the beginning of 2012, but have decided to do under the pulpits before launching next year.) Refer to drawing HM-291013, which is the above referenced sketch.

Also, for anyone who has an older C&C 27 with deck mounted stanchions, another Ottawa area sailor has ordered 4” x 6” plates, 1/8” thick, with ½” radius on all four corners, for mounting under those stanchions. Such plates do not come pre-drilled, as the required hole location may vary from boat to boat. Such plates should also be available from Precise Metafab for the same price ($9.00 / plate; one plate per stanchion), based on a $50 minimum order. These plates might also be used, if necessary, for mounting underneath the aft-most stern pulpit supports, which do not mount to the rail. Refer to drawing HM-101113.

When installing our the plates under our rail mounted stanchions, we used a little 4200 sealant/adhesive under the plate, and anchored the plate with two #8 x 1” roundhead stainless steel screws, as shown in the above referenced photo. The deck is not cored in this area. On the underside, you’ll want to use large fender washers or small sections of aluminum plate to distribute the load underneath the stanchion bolts, though on our Mark 3, the washers and backing plates that were previously (originally?) installed were generally adequate.
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27

#15 Re: General discussion » In search of a reliable sailboat. » 2013-03-07 23:12:38

Hi Mike,

Did you find a boat?

Hugh
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#16 General discussion » YouTube Video: Welcome to the Ottawa C&C 27 Fleet » 2012-07-28 04:00:51

Hugh Morrin
Replies: 0

I was recently inspired by a friend who created a YouTube video* of the Nepean One-Design regatta held here in Ottawa. Dave graciously shared his video with me, and that clip (and his comments) formed the basis of this video which highlights the sailing opportunities here on the Ottawa River. Check it out at http://www.youtube.com/watch?v=oSUO34A8CsA. (Available in 1080p HD for those with high speed connections.)

In addition to the video of this year's NOD, which was also the Ontario C&C 27 Championships, the video highlights some of the cruising opportunities in Ottawa, and includes a selection of photos of our popular raft-ups. Hope you enjoy it.

For future easy reference, there is a link to this video from www.nsc.ca/cc27 .

Hugh

* Dave Bradly's original video of the NOD is available at http://youtu.be/VfjCbzh9prg . Many thanks to Dave for sharing his video.

Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#17 Re: General discussion » genoa tracks placement » 2012-07-19 13:58:41

Tom et al,

David has updated the Black Arts section with a photograph and comments of what we did on Blue Zulu. See http://www.cc27association.com/fixes/decktracks/source/trackbz.html

Cheers,

Hugh
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#18 General discussion » Hard Coated Dacron for a C&C Mainsail » 2011-11-21 08:05:33

Hugh Morrin
Replies: 4

Has anyone got experience with a main made from hard coated Dacron? Our sailmaker is recommending such a material, but the downside is that it would require rolling the main. That, in turn would require letting the luff slides fall out of the mast each time the main was lowered. I'm curious if anyone rolls their main on a regular basis, and if so, do you find it to be much of a hassle?

Thanks.
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#19 General discussion » Converting a MK 4 to a MK 3, Moving the tack » 2010-07-18 13:10:01

Hugh Morrin
Replies: 0

Has anyone tried moving the tack point on a MK 4 back up to the bow, to the same location it is on a MK 3? It seems that it would be easy to machine and bend a piece of stainless that could be attached in the same way it is on a MK 3. And as a trial option, it looks like one could attach the forestay to the pin for the anchor roller, which should be about the right location. The aluminum casting at that point looks thicker than where the forestay is currently connected, though aluminum castings aren't known for their strength in tension. Comments or suggestions?
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#20 Re: General discussion » Yanmar 2 GM Prop Question » 2008-11-23 11:18:14

Mike,

The Martec prop provides adequate thrust for backing out of a slip, but a folding prop will not generate the same kind of thrust that a fixed pitch propeller will. You need to be a little more cautious coming into your slip, and don't expect to stop on a dime. But other than that, the performance is fine. It is the most common type of prop amongst our racing fleet.

We certainly don't get the performance that Marcus claims, but nor would I expect such performance.

Regards,

Hugh
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#21 Re: General discussion » 1976 C&C 27. How best to sell? » 2008-11-19 00:52:16

Nigel,

If you're thinking about keeping your boat in Ottawa, check out www.nsc.ca/cc27. Great fleet here, great racing, and the cruising is better than you might think.
Cheers,
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#22 Re: General discussion » Keel Dimensions » 2008-11-19 00:35:27

We bought a trailer used that was custom built for a MK III. I'd be pleased to e-mail you photos if you'd like to send me your e-mail address.

morrinh at magma dot ca.
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#23 Re: General discussion » Yanmar 2 GM Prop Question » 2008-11-19 00:29:43

We bought a new Martec for our 2GM equipped MK III earlier this year. Recommended prop from Martec was a Martec, MK 3 Folding, RH 14" D x 12P-3, 7/8" D shaft. Martec Tech Support were also very helpful -- see http://www.martec-props.com.
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#24 General discussion » C&C 27 Graphic for T-Shirt? » 2008-07-12 06:01:00

Hugh Morrin
Replies: 0

Does anyone have some graphics that would be suitable for silk-screening on a T-shirt? Something like that posted at http://www.cncphotoalbum.com/brochures/27foot/27b1pg02.htm would be suitable, but this image would need a little cleaning up.

Thanks.
Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/cc27
</a>

#25 General discussion » Tightening the Exterior Handrail » 2008-06-01 12:23:43

Hugh Morrin
Replies: 3

There are a number of postings on the Forum that address replacing or re-bedding the handrails. These postings include:

Looking for a Deck Hand Rail <a href="toast.asp?sub=show&action=posts&fid=2&tid=347">http://www.cc27association.com/f3/toast/toast.asp?sub=show&action=posts&fid=2&tid=347</a>
Handrail attachment  <a href="toast.asp?sub=show&action=posts&fid=2&tid=1156">http://www.cc27association.com/f3/toast/toast.asp?sub=show&action=posts&fid=2&tid=1156
</a>Deck fitting bedding material <a href="toast.asp?sub=show&action=posts&fid=2&tid=2431">http://www.cc27association.com/f3/toast/toast.asp?sub=show&action=posts&fid=2&tid=2431

</a>(Tip: Use the search function at http://www.cc27association.com/f3/toast/toast.asp?sub=showsearch&action=posts to search for specific topic.)

But none of the postings address the issue of simply tightening the forward portion of the handrail. On our late model Mark III (#894), the forward three fasteners of the handrail are accessed through small plugs in the liner, in the area above the head and hanging locker. (Note that the handrail location, and the spacing between fasteners, vary significantly across the fleet.) When I removed these plugs, there were 3/8" nuts on which I could place a nut driver, but I could only tighten them a little before the bolt starting spinning. Has anyone else encountered this problem, and found a solution, short of removing both the internal and external handrails? Presumably the head of these forward bolts is buried under the teak plug on the exterior side of the handrail.

Any suggestions would be appreciated.

Hugh Morrin
Blue Zulu
C&C 27 Mk III, #894
Nepean Sailing Club
www.nsc.ca/nsc_racing/cc27/cc27.htm</a>
</a>

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