Tuesday, November 24, 2020

Header Photo: Jester Dink Racing; Jester Designer/Bulider Identified

Before reading further I suggest you refer to this post for background.

The previous header photo features 8 foot Jester dink racing on Santa Cruz harbor. I particularly like the bare feet draped over the leeward side, a throwback to when I was a young kid and spent my entire summer barefoot.

Now to the other Jester class, the twelve foot, sloop rigged daysailor. In the previous post I couldn't find anything about the origins of this class on the Internet. Now thanks to reader Bob Fujita, the mystery is solved. From Bob's comment on the previous post:

"The Jester was designed and built by Cleveland, OH Sailboat dealer Jack Butte. Jack sold primarily one design daysailers, and saw an opportunity to use the influence of the Thistle, Flying Scot, and Rhodes Bantam to design a 12’ dinghy. My parents sailed with Jack Butte at Edgewater Yacht Club, and I sailed with his daughter as part of the junior sailing program"
Bob sends along advertising brochures for the Jester, listing Glas-Tec Enterprises as the builder. 

A primo-condition Jester 12 footer somewhere in the Midwest. Nothing racy here, just a capable daysailor with high freeboard and bench seats.

Thursday, November 12, 2020

Flat Pack Composite Kits

Flat pack plywood small boat kits; all pieces CNC cut and shipped to you in a nice long box (or two) have been around since the mid 1990's. The local firm, Chesapeake Light Craft is a world leader in this type of kit, offering a wide array of plywood small boats in kit form; built stitch and glue with epoxy fillets. Back in 2014, Aussie Mark Hughes took the flat pack kit concept one step further and developed a composite carbon/foam flat pack kit for super-techy ultra-lightweight construction. In the photos below the flat pack kit makes a Bunyip scow Moth. Todd Oldfield, posted on Facebook on his build, which I have lifted and re-posted here.

The jig is CNC cut from MDF and is an intricate web of slotted panels designed to hold the frames.

Frames, topsides, and chine panels are cut from prefabricated vacuum-bagged carbon skinned foam. The Perverted Moth blog has the layup schedule for the Bunyip panels.

Jig assembled.

CNC cut frames in place on jig.

Topside and chine panels taped in place.

Fitting the bottom foam panel. The bottom foam panel is not glassed on the outside.This may be because the entire outside of the hull is covered in a wet/layup carbon layer to stick everything together.

Carbon ready to wet out.

Outside of the hull complete on jig.

Hull off jig. I would think there would need to be more gluing area along the gunwhales and maybe along the frames

Fitting the foam deck and foredeck. Note the cuts to help the foam bend around the curves for the nose block. A heat gun is also helpful for this.

Below: the first 2014 carbon/foam Bunyip M-scow with cut-out frames and mast support box. From Longy Oi:
"There are different versions, designs. both composite inspired by the ply Bunyip design. First build was the Mark Hughes M-Scow designed composite flat pack was built as Brian Sherrings 'Carbonara'. Possibly the strongest yet light scow built. Todd's build is to another (?bunyip) digitised design. I don't know the point of having the two designs, but, yes, some differences, there was some Wet lay-up on the latter build, maybe not on the MScow?"

It may be that a scow with it's shallow curves is more suited to this style of flat pack kit-building. Composite panels, being stiffer than plywood panels cannot be expected to twist up as plywood panels can. (Reference Todd Oldfield's comments below.) I could see someone also trying this method on the simple, Benoit Duflos Classic Moth Moth-Pop design.

Todd Oldfield answers some questions about his build:
"in answer to your question I didn't put carbon on both sides of the deck and hull under vac bagging as if i did that I would not have been able to get the desired shape in the panel if i did it on both sides. I went back after the panel was glued done and put a layer of carbon over that panel and relevant join on the chines. All the chines are covered ibn carbon both sides to. It was a good fun build that was quicker to do than expected and wasn't as hard as expected either by using a male jig to form the boat on."

Sunday, November 1, 2020

Hal Wagstaffe's 1962 New Zealand Classic Moth Design

Moth Classique

These Classic Moth lines plans popped up on FB. A multi-chine plywood, very much a middle of the road design, "Puriri" looks very worthy of someone building a reproduction. She would definitely fit in the Gen I division of the American Classic Mothboat rules. Puriri is an indigenous New Zealand tree.

More Classic New Zealand Moth designs can be found at this post (from Nedslocker). Includes Bruce Farr's first dinghy designs.

Saturday, October 31, 2020

Header Photo: Start at the 2011 Classic Moth Nationals


The previous header photo was from a Sunday start at the 2011 Classic Moth Nationals. Unlike this year's crawling breeze, the 2011 Nationals had some breeze. In the background of the photo is the Museum of the Albemarle (green roof), Elizabeth City, North Carolina, which has some of the more iconic Mothboats from the early years on display.

Friday, October 30, 2020

2020 Classic Moth Nationals

Lloyd Griffin

The 2020 Classic Moth Nationals in Elizabeth City was a drift-fest, with racing only on Saturday. The 2020 Nationals were postponed for one month because of concerns over too much wind from the remnants of one hurricane. Ironically the rescheduled Nationals had the wind sucked out of Elizabeth City by the passing of the remanants of another hurricane.

As usual, George A. over at Mid-Atlantic Musings has the complete report.

Results (top twelve) of the 2020 Classic Moth Nationals. Congrats to Mike Parsons, the 2020 champion, George Albaugh, winner of the Gen 1 division, Joe Bousquet, Masters champion, Sam Moncia, junior champion, and Emma Mayer, women's champion.

Skipper Races Hull Design
Mike Parsons 1,1,1,1,[2],1 Mistral
Joe Bousquet 2,2,2,2,[4],2 Mistral
Parker Purrington 3,[4],4,3,3,3 Dunand
John Zseleczky 4,5,3,[7],1,4 Mistral Y2K-mod
George Albaugh 6,3,[8],4,5,7 Wooden Europe (Gen1)
Zach Balluzo 5,[7],6,5,6,6 Mistral Y2KMod
Bob Patterson [8],6,7,8,7,5 Shelley (Gen 1)
Sam Moncia [9],8,5,6,9,8 Olympic Europe (Gen 1)
Emma Mayer 7,[10],9,10,10,10 Olympic Europe (Gen 1)
Matthew Panek 12,11,10,12,8,[DNF] Olympic Europe (Gen I)
Logan Weeks 10,[13],11,9,13,11 Olympic Europe (Gen I)
Valerie Turbett 11,[14],14,11,14,9 Olympic Europe (Gen 1)

Thursday, October 29, 2020

America's Cup Update; October 2020

As an old codger, I am somewhat ambivalent about the current crop of foiling monohulls. I grew up when the America's Cup had all the stodginess of an English fox hunt. When a bunch of old guys in blazers and straw hats would slowly motor over to your 12 meter and solemnly announce, amid tight smiles and long faces, that you were no longer needed in the defender trials, or conversely, you had been chosen to defend the America's Cup, and the smiles were broad and congratulations poured out. When two leadmines would pirouette, and luff, and yell before the start and then proceed to bash their way upwind at what seemed to be a brisk walking pace. The dominant 12 meter would work out to a half boat length lead after fifteen minutes. But there was a certain charm, albeit far removed to what most of us considered the sport of sailing.

The modern America's Cup is all F1 motor racing. Speed, and more speed from spider-like contraptions. So much speed that serious injury in a major mishap becomes part of the sport, just as in motor racing. I've never been a big fan of watching motor sports on the TV, so I approach today's foilers with a shrug of the shoulders (although I marvel at the technology and recognize the courage and skill of the sailors). When every America's Cup foiler is going about the same speed, the gauge becomes lost except for a massive rooster tail of spray spurting off the main foils. I must admit I have some sailing friends that are very gaga over the speeds of this year's America's Cup monohulls so I may be in the minority opinion in this. As it was with the 12 meters, this sailing is also far removed from what most of us consider the sport of sailing.

From Planet Sail, here is an interesting video on the thinking behind the current technology revealed as the generation 2 of these monohull foilers launch into battle.

Chris Thompson, famed author of the complete small boat racing history over at Sailcraft blog, takes exception at my disparaging remarks about the old America's Cup (the 12 meters, the IAAC leadmines):
"With great respect, Tweezerman, I'll say that for many years the "old" wasn't actually all that far removed from what most of us thought of as sailing. When the Universal Rule was adopted, for example, as you'd know the AC boat were just big versions of the M, N, P, R, S etc classes that were sailed in their dozens at local clubs and regattas. I once calculated that the British AC challengers of the 'tween war period sailed at something like 20% or more of ALL British sailing clubs each year, if I recall correctly. Around the time the 12s were adopted, there were still Metre boats racing in the UK, Europe, USA, Australia, etc at clubs each weekend. The first press releases for the IACC class stressed that they were going to be like sportsboats, although they morphed into skinny leadmines. So the old AC was largely sailed in big versions of fairly common mainstream club and regatta boats, and I know that something like running the bow on a 12 isn't vastly different from running the bow on an IOR boat or Beneteaul from personal experience, you can step onto the pointy end of a 12 in a class race and feel pretty much at home. The foilers, on the other hand, are completely divorced from almost all club and local regatta level racing. There's only about 25 other ballasted full foilers in the world as far as I can make out, all of them on the European lakes. Go to Cowes, Newport, Sydney, Kiel or any other of the centres of our sport (apart perhaps from Garda or Lucerne once in a while) and you'll find nothing like an AC boat - although ironically you'll still often find boats that are small versions of AC boats of many years ago."

Saturday, October 17, 2020

Make a Hole; Plug a Hole

My wife, in her pithy wisdom, has observed that all I seem to do with my Classic Moths is to cut a hole and then fill it up. And she's right in a way. My current Classic Moth project, a Savannah Wedge, is undergoing a side deck modification which entails cutting out holes and then filling them back up. And I want to lower the transom which means cutting more holes, and then filling them up.

I picked up the Savannah Wedge back in 2015 and like many of my projects, the Wedge sat neglected, aging in place, getting dirty, while I figured out what I wanted to do. With Covid-19 I'm back again making holes, plugging holes on the Wedge. When a Savannah Wedge has been raced, back around 2010, she performed miserably. It suffers from too much wetted surface, the bane of slow Classic Moths. Yet I persist. The original idea was the Wedge would be an ideal Moth to take the grandkids out; she does have a grand big cockpit. We shall see; for there are more holes to cut, and more holes to fill.

My boatbuilding philosophy.