Messages

Red Shift was an attempt to make a Baggy 2 on a budget. The lines were lifted from Baggy2 but built in 3 planks. The resulting boat only displaced 475lb on the design waterline so sat very low in the water until some dynamic lift helped.
The garboard was extended as a bilge keel that ran the aft 8 feet of the boat, forming a sort of ragged chine that broke spray off very effectively at speed.
Occasional busts of wonderful speed in heavy weather didn't compensate for very poor performance in light weather.
My first attempt at woodwork, it wasn't a thing of beauty, or even very light despite having no thwart.
Great fun to build and to sail in a breeze. A complete nightmare in light displacement conditions.

Wizardry was built by Nigel Waller for Howard Stevenson around the same time as he built Punkerella for himself.
It was a tortured ply one-planker different in shape from Punka by having hip darts to eliminate Punka's "Coke bottle" waterline shape.
A quick varnished boat but never sailed as light as Punka.
Howard probably still has it.

The reason nobody has ever got to a definitive answer is because it is "very complicated". You have two sets of aerodynamics in two different fluids with radically different densities and reynolds numbers. The two angles of attack are interdependant.
Add to this the fact that it is meant to work over a wide range of speeds and wind conditions and you can see why you could write for years and never get a straighforward answer.
As Tom and Ian have identified though, it seems to be a feature which finds more favour with faster boats rather than a 12 where a sudden change in board angle might just throw you in the water downwind. Didn't some of these boards gybe only when fully down? That would seem like a good solution..
Derek

Tim,
 
Just as a quick caution from Gerry's comment. The shape of the notch that the nylon roller drops into is rather critical. It is meant to provide a release trip if you hit the bottom, which is fine if you get the angle right. If it is not steep enough, the roller spring will be forced upwards on a planing reach resulting in not steering when you most need it. If the angle is too steep and you whack the bottom, it will not trip and the notch provides a weak point in the blade - the blade can simply split down the grain from the bottom of the notch.
This all sounds a bit alarming but if you make the notch fairly steep and ALWAYS remember to trip it early as you come into the beach, it will be fine...hope this is of some help.
Derek

If Hykeham is end June (25/26?), that still leaves 3/4 and 9/10 July before the Oppy invasion hits La Rochelle and the French school hols start.
Any preferences?

The club at La Rochelle (srr-sailing.com) have a window end-June early July (student and budget friendly since it is outside the French school hols but after most tertiary educational exams). A long weekend with the rest of the week as a non-sailing hol could be a plan.
Overnight crossings ease the trip if travelling with Tinies.
Nice bit of water, capable club and the prospect of some reasonable weather.
Cheap and cheerful camping or mobile home accom available nearby.
Anyone interested?
Derek N3510

I know of two one plankers made that year, one called Punkerella 3012, the other called Wizardry 3027 owned by Nigel Waller and Howard Stevenson respectively. They were both pretty quick and well sailed as the results for the next couple of years show.
 
Interestingly the boat database shows them both as 4 plankers - which is wrong. They were one plankers which by dint of some careful addition of strips of veneer, complied with the double curvature rule that was meant to prevent round bilged boats at the time.
Punka also featured a daggerboard and so was the only ever round bilged daggerboard N12.

Put a rise of floor guage on 3179 and you will see why it is different. I believe it was actually built before 3165, but successfully measured after. It is very fine indeed and was always exteremely fast in the light stuff, though this might have had something to do with the Snidley driver.

Jeremy / ANthony,
 
Just one comment about Dave's numbers.
Baggy, in a particular Dave's and Rob's were built with a very short shroud base to allow the boom to swing further with the rig tension still on. If you take a line from the back of the mast to a line between the shroud points, this was just 10" for these boats. They were such a step in speed that most subsequent boats had a fairly short shroud base as a consequence. Earlier boats, like the Cat will have had 12 - 14" as a shroud base and so the spreader dimensions in particular will need a bit of adjustment to reflect this. As a suggestion for a starting point, put he mast in the boat without the spreaders connected and set the rake and tension as desired. Then mark up the spreaders to give you perhaps 1½" outward and ½" forward deflection of the shroud. I seem to remeber these numbers being about right for a proctor "C" or a Kappa. Then put it on the water in fully powered up conditions and see how the boat points and how it bends and make adjustments from there. I am sure someone else will offer updated advice if I am wildly wrong.
Good luck
 
Derek
 

The last 7 plank Rowsell built N12. Pretty as a Merlin of the same vintage with Sapele decks and Sycamore gunwhales.
Originally built for Michael McNamara (whose wife was the daughter of Arther Oxborough of the Salver). Mike didn't have a great success in N12s that year and sold the boat to Tim Philips at Exmouth. My father bought it a few years later and sailed it with me as a rather disapointed crew at Plymouth and Falmouth ('75 and '76) since I had club sailed it all year. We eventually sold it to someone in Topsham at a time when Tim and Jane Bass were sailing N12s there.
I saw it there briefly on one accasion and the underside looked as though it has been sprayed with celulose - the resulting orangepeeling of my years of 400 grade wet and dry and two-potting was saddening. No idea where she went after about 1980.

So just to push this back into the visible zone on the chat board - we have the possibility for a weekend SEA meeting at Exmouth on the 18/19 July. After the roaring success of the Burton, please let me know if we have takers for some English Channel type sailing. If there are thoughts about making it a substitute Gill meeting after the demise of Hunstanton, please give me a call and I'll try the club. They might be on for that too. For the moment they are expecting up to ten, not 70 boats!
Derek
3510
 

Built in Dobson's yard at Sawley by Nigel for David Lyddington who initially sailed her at Rugby from memory. She was by a very long way the prettiest of cold moulded Bagggies. Other boats that came out of that temporary workshop at the time included "42" =3111 also Bicycle Clips 3162. I think Tsunami was triple planked and not sheathed whereas the other boats were double planked, hand faired and then had a thin layer of glass layed over the outside.
She also was built with cappings all over the place like a Rowsell merlin of the time because David, a Merlin sailor didn't want any visible end-grain.
All the other boats were Obeche - a paler, softer and lighter wood than that used on Tsunami which I think was Khaya.
 
Hope that adds a bit of earlier background.
 

Any chance of an update on the "Burton Week" website or at least a link to the results. Perhaps if you didn't go, you don't deserve to share in the excitment?! Well done Jo and Sophie - that should stimulate some new boats then!

2959 (my misatake with the number) had a daggerboard for many years - may have been converted...
Aces High 3054 (Ace Freeman and subsequently Andy Shorrocks never did).
There were only  ever 3, Bouncer, 3003 and 3004.

I know that there were 12 or 13 boats given daggerborad dispensations on their certificates - check with Kevan.
From shaley memory they included:-
Bouncer itself which Joe has modified to take out the dagger board amongst other changes
3003 Respectable St - see John Murrell
3004 Los Angeles - (Shelcocks from Ulley initially)
2999 was a daggerboard Pipedream
2954 was Richard Watson's daggerboard windfall - Landslide
3011 Tiger Lil was John Royce's and subsequently went to Nigel Maddocks
One of John Royce's Soggy Moggy Cheshire cats had a daggerboard but it was taken out when it was sold (to Lionel Wilkinson?)
3012 Punkerella
can't remember any others but as above, the Hon Records officer is the place to find those with the all important note on the certificate.
John Murrell might be persuaded to part with 3003 (which is a little above current weight but does now feature a double floor).
Good platform to play with if you want to try foils!
cheers
Derek