New Tech Bights article now out in issue No. 135 of Small Craft Advisor magazine.
A menagerie of interesting small boats and classic outboards, their restoration and improvement, and occasional use on the Chesapeake Bay and other waters
Tuesday, May 17, 2022
Tuesday, December 22, 2020
More on Flotation, and Masts
- Bostik Unigrip 999 or 1669 adhesive
- 18 oz Hypalon PVC fabric
- Air valve
- HH-66 adhesive
- 18 oz Shelter-Rite fabric
- 13 oz Weblon Regatta
Friday, December 18, 2020
Small Boat Flotation and Howard Hughes' Flying Boat
For lots of reasons it's important to load the boat so that the heaviest items, such as water bottles, anchors, and chain rodes, are secured as low as possible, ideally between the cabin floor and the hull bottom. In addition, it is useful to store lighter items, such as clothes and sleeping bags, in sealed “dry bags” that are secured as far forward and as close to the deck as possible. This puts flotation up high and, together with a couple of flotation bags up high under the cockpit seats, should help keep the boat from turtling if it is flooded. If heavy weather is expected, right-side-up buoyancy can be further enhanced by securing dock bumpers to the gunwales using the deck cleats and railings.
And it’s worth repeating the obvious: the Potter -- and any small cabin boat -- has it's maximum amount of flotation in its cabin. If the cabin hatch boards are in place and the sliding hatch is closed during a knockdown, much of the green water will be kept out of the cabin, the boat will stay afloat, and it cannot turtle. Water inside the cockpit should drain out (make sure the plug is out, or is easy to pull out). I sail my Potter with the hatch boards in but the sliding hatch open, for ventilation and so that I can get to stuff in the cabin, and the odds are still excellent that a knockdown will not cause cabin flooding. And whenever the wind pipes up, the best insurance is to "batten down the hatches" and I close up the cabin.
Tuesday, December 1, 2020
MacGregor 19 Mast Stepping
The MacGregor 19 was built with a pivoting mast step and has provisions for lateral baby-stays between the middle of the lower mast section to anchors that are outboard on the forward cabin top. It took some effort to find, but below is a photo of the set-up (today I cannot find the picture's source, but thank you for the clearest explanation of what's going on. And what a great-looking dodger -- something that I will return to). As you can see, the babystays are attached to cabin top using the flat deck eye straps that are just outside the bullet blocks, and they are co-linear with the pivoting axis of the mast, which is critical for stabilizing the mast until the shrouds can take over.
I don't have slots in my M19 mast. Instead there are two holes that are 5’-7” above the foot of the mast. I used them to attach two mast tangs. The flat shackles on the cabin top are 24 inches from the centerline, and the babystay mast support angle is about 70 degrees. I believe this is very close to what is shown in the owner's manual, which shows a rope cleated to the mast. Instead of steel cables I used a couple of polypro cam straps threaded through the flat deck eye strap that ran up to the mast tang on each side.
Two mast crutches were supplied with my boat; they plug into a socket on the transom crossbar. A short, 6-inch crutch is used during transport, and a 2-foot long crutch is used to increase the mast lifting angle during raising and lowering.
There was no gin pole that was included with my boat. The short crutch could possibly be used as a gin pole, but it would need an extension tube to slip on the end. The tubing would need to be pretty small diameter to fit. For a DIY project, Blue Water Yachts sells arms that can bolt onto larger-diameter tubing (BWY #34231V0).
One version of the M19 mast raising process (described in the owner's manual) uses one of the winches. The gin pole is attached to the front of the mast step and the forestay is then attached to the end of the gin pole. A block is temporarily clipped somewhere near the bow, and a sheet is run through the block to the end of the forestay. With the gin pole perpendicular to the mast, a block-and-tackle (the mainsheet) is strung between the pole and the forestay anchor. Or one of the jib winches is used. Take the lazy end to the winch, give it a crank, and up she goes. Unfortunately, working in the cockpit is not the safest place since you will be standing right under the mast. And once you've got the mast up, the tricky part is extracting the forestay and locking it into the bow fitting. Thinking ahead, you can belay the mast upright if you shackled the jib halyard to the bow and cleated it off on the mast. What the manual doesn't mention is that this operation is best performed if there is at least one more person besides the person on the winch, a luxury that I don't have. I sail single-handed, and I don't want to depend on boat ramp "volunteers" for help.
Another mast raising system for the MacGregor powersailers incorporates a dedicated near-vertical strut that attaches to the mast step and has a small hand winch, similar to ones used on trailers, attached near the top end. Here is a good video of the home-brew rig in use, www.youtube.com/watch?v=NRaJxP50ZS8. Judy Blumhorst, the well-know West Wight Potter sailmaker, posted an great video with commentary of how she manages her Potter 19's mast, www.youtube.com/watch?v=aIXH9jos-cI. Finally, this video shows the details for the latest MacGregor 26M powersailer mast raising system, www.youtube.com/watch?v=z69AEM101x0. So I had lots of great examples to study.
I assembled my crane using some aluminum C-section and a trailer winch from my parts box. The bottom of the aluminum is bolted to the front of the mast step. The top end of the strut is fixed to the mooring cleat using a cable or a length of low-stretch line. Baby stays to anchor points on the chainplates fix the “mini-mast” strut. The winch cable is attached to the mast and is used to raise and lower it.
Note that I added an extra set of stays from the crane to the bullet blocks on the cabin top (the ones normally used as fairleads for the jib sheets). This keeps the crane rock steady throughout the mast raising process.
Friday, November 27, 2020
MacGregor 19 Rudder Mod
All of the MacGregor powersailers have twin kick-up rudders that are used both for sailing and when the outboard is running, even at speed. On the M19, the motorwell is too narrow to allow the outboard to swing more than a few degrees. Unlike the later 26X and 26M models, the motor and the rudders are not connected together on the M19.
The kick-up rudder blades are hinged on custom stainless steel rudder posts. MacGregor used sacrificial plastic shear pins, nylon bolts, or wooden dowel pins to hold the hinged blades in the down position. The photo shows the rudder blade down, using the stainless steel "transport" pin (which I use to lock the blades up for trailering, not for sailing!).
Thursday, November 26, 2020
Going; going; gone. Well, almost...
No, I'm NOT talking about politics. As I'm doing research on the internet, more and more of my bookmarked links lead to "not there anymore" pages. This post is to help me remember that sometimes you can still find information if you look for it hard enough.
International Marine, manufacturer of the West Wight Potter sailboats until it closed in 2015, provided a treasure trove of information gathered from Potter owners and ex-owners. If you were a new owner of an old Potter, this website was invaluable (thank you, Ken Lange). When the company closed, the Potter lore appeared to be lost. Fortunately, most of the information on the old website still exists (for now at least...) using the Wayback Machine,
https://web.archive.org/web/20160401020516/http://wwpotterowners.com/
As a new owner of a 25 year old MacGregor 19 Powersailer, I found the "dougpile.com" website to be a great starting point for info and mods, including a copy of the M19 Owners Manual. The original website is gone, but most of that content is still at
http://web.archive.org/web/20161014125752/http://www.dougpile.com/mac19/
A couple of years ago, I found another great MacGregor sailboat resource. I spent time perusing the forums, especially the section of "mods," then dreamed of the mods that I would undertake on my new-to-me M19. After a few months, the website disappeared. The boat has been parked and the projects have been halted for a couple of seasons.
Recently I went looking for a nugget of information related to outboards and prop selection using the usual Google search. Lo and behold, I found that the old Mac website has reappeared, with a new and sleeker front page, a lot of recent posts on the forums, and more mods. More fun this winter; and dreams of new Mac19 projects! Here's the link,
To give equal time to the Potter owners (or potential owners), the best forum that I've found is at at the Trailor Sailor website. Here's the link to the Potters (there are also forums for other brands like Nimble, Com-Pac, Montgomery, and Precision),
https://forum.trailersailor.com//forum.php?id=2
Happy Thanksgiving.
Wednesday, November 25, 2020
OMOB (One More Old Boat) MacGregor 19 Powersailer -- Part 2
You can’t get a really good look at a used boat or car until you are alone with it. Since I bought the boat in November, I used the off-season winter months for research; I started this article to document what I found...Today, as the boat and information both increase in age, I'm finding that lots of M19 knowledge and lore is slowly disappearing, year by year...
Mast and Standing Rigging
Sails
“The 19 is a stiff, stable boat with a fair amount of hull drag and smallish rudders, it wants all the sail power you can put on it. Unless you sail in a very high wind area, almost everyone prefers the balance and performance of the boat with the 150% Genoa. Some very early 1992 models had a simple 3 wire rig with no spreaders and the headstay only about 3/4 of the way up to the masthead. Few of these boats were rigged to run a 150% Genoa, just a tiny 100% Jib. Many of these boats have been re-rigged to the newer masthead rig with spreaders. Sheet winches were an option on the 19, if your boat doesn't have winches on the cabin top, you will need to add them to use a 150% Genoa." (https://shop.bwyachts.com/articles.asp?id=257 )
Running Rigging
Centerboard and Rudder
Accouterments
Sailing
What's in Your Ditch Bag?
New Tech Bights article now out in issue No. 135 of Small Craft Advisor magazine .
-
Warning: Extremely Technical Content (if this is too techy for you, stay tuned for Part 2, which is more practical than theoretical) Questio...
-
The Force 5 dinghy was designed by Fred Scott and Jack Evens in 1972, around the same time that Bruce Kirby and Ian Bruce designed and devel...
-
All of the MacGregor powersailers have twin kick-up rudders that are used both for sailing and when the outboard is running, even at speed. ...


















