MilliBee with a haircut?

[alopenboat]

On 20 Jun 2012 at 9:42, Port-Na-Storm [via UK HBBR Forum] wrote:

>
>
> Look at that sleek low coach roof the designer intended. Mmmmmmmm
>
> Of course lowering the roof will lower the tabernacle so the boards
> may argue with the  boom.

Surely you just extend the tabernacle so that the hinge is at the
same altitude as at present. Then the standing rigging would still
fit.
>
> Dagger boards are all very well but the do have one major drawback. I
> presume you intend to sail her with both boards down otherwise the
> windward board is going to be just where you want to sit.

That could give you an interesting sensation when they ground
unexpectedly.

--
Hoping for calm nights

Alastair Law,      
Yeovil, England.
<http://www.little.jim.freeuk.com>          

[Paul H (admin)]

Chaps,
The plan is a centre board that Chris has designed already. But we decided trials with temporary dagger boards would quickly test the CoE and balance with different sails.

I'll add a bowsprit also, to take a Wayfarer genoa in light winds.

More later...
Paul

Sent from my HTC

[Paul H (admin)]

Cee Dubs has sketched a centre-board for MilliBee:



If it extends roughly 20in into the cabin it won't cause major problems. A removable seat can be added in the companionway for crew to move their weight forward and/or shelter within the cabin.

Likewise a hinged table will help cooking/eating within the cabin and Chris thinks a bridge deck is useful, again as somewhere to sit and the volume of water in the cockpit when hit by a big wave is reduced.

-Paul

[tony waller]

When I went on Ceedubs’ Titwillow, I was shown how the centreboard casing double as an excellent heads. Has he allowed for this in the design?? Tony

 

From: adminHBBR [via UK HBBR Forum] [mailto:[hidden email]]
Sent: 21 June 2012 12:13
To: tony waller
Subject: Re: MilliBee with a haircut?

 

Cee Dubs has sketched a centre-board for MilliBee:

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[Paul H (admin)]

tony waller wrote

When I went on Ceedubs' Titwillow, I was shown how the centreboard casing
double as an excellent heads. Has he allowed for this in the design?? Tony

There will probably be a vital "inspection hatch"

-Paul

[Jeremy]

Reminiscent of an event when I did my yachtmaster practical course and exam years ago, with a chap from Fowey.  There were three of us doing it, two blokes and (rather manly, it has to be said) lady.  One night, after a run ashore to a hostelry we got back on board and the examiner and us two blokes made a beeline for the lee rail, to dump ballast in the time-honoured fashion.  One remarked that the lady would have to go below to the heads, whereupon she just joined us at the rail, leaned back and peed over the side.  To say we all learned something new about the capabilities of the female anatomy is something of an understatement..........

[Paul H (admin)]

The cabin is staying put for a while, but I've started building a bowsprit from the bilge case offcuts - 28mm laminated ply, about 5in wide, strong and solid. Slightly tapered with a jigsaw, wizz round with a round-over bit in a router and job done.

To hold a Wayfarer genoa I need about 12in on the bowsprit but here are a few pics with 15in overhang.





Is there a visual sweet spot for bowsprit lengths or an ancient rule of thumb?

What's the verdict chaps?

-Paul

[Port-Na-Storm]

My visual sweetspot says the line of the bowsprit should follow the line of the sheer, otherwise the boat will look like its doing a nosedive, although that might be difficult in your case due to the camber on the deck.

Only my ever-so-humble opinion you understand but if we're doing this by committee I want to be the one who shouts loudest. (again).

[GregHBBR]

I agree with Port-Na-Storm. Ideally, the bowsprit will pass through the fore deck in order to follow the line of the gunwales.

However, if it is to remain above the deck, it needs to be scarfed into the front edge of the cabin.

As for length - whatever the sail plan demands.

[Paul H (admin)]

BTW: The plank is oversized until I get a new trailer (probably John's) and know the boat to car clearance.

Six existing bolt holes are indicated below - the 5kg Bruce anchor is right where she needs some weight!



Total length in the photo is 15ft 3in, 4.66m

-Paul

[Michael Rogers]

May I dissent? Any reasonable bowsprit (other than a stub) which extends the sheerline is going to head more and more absurdly skywards. The longer the bowsprit, and the sweeter the sheer, the odder it will look.  Think Colne estuary smack, or Leigh bawley: all right, extreme examples, but I think they illustrate the point. Surely, horizontal is what is needed. Certainly shouldn't droop, so possibly a VERY slight 'up', rather than 'down'. But sheerline no, waterline yes.

Michael

[Port-Na-Storm]

Give us a long-shot  from the side with the camera at prow height to see what's going on.

PS, boat should dictate the trailer not the other way round.

[Jeremy]

Yes, the bowsprit needs to be chocked up at the bow to get the line parallel with the sheer, otherwise it will look a bit dire.  I'd be inclined to do a combination of cutting a taper on the underside of the bowsprit at the aft end and adding a wedge at the bow end to get it more in line with the sheer.  It'll be a bit of work, but well worth it, IMHO.

[Ratcatcherjohn]

Evening Paul  I have just had the tape out and the bow snubber is 2`6"  (about 76 of them silly little things for you youngsters) from c/l of the ball hitch.  As Millibee is straighter in the stem than the present occupant and a bit shorter I don`t anticipate you having to move the snubber forward too much. (There is about 12" of adjustment before the gas axe comes into play).  Hope that helps.
 
 The water level in the field is dropping off so lets hope we get a dry week.
 
 I like the idea of a big anchor stuck right out in front.  It really appeals to me,  but for reasons other than weight distribution.  
 
John
     

[Paul H (admin)]

Port-Na-Storm wrote

Give us a long-shot  from the side with the camera at prow height to see what's going on.

Here it is chocked up 36mm, camera roughly at sheer height, rotated a tad to offset the slope of the drive.



John - thanks, that's about 1ft more than the "trailer of dubious legality" - plenty of room.

-Paul

PS: I've been scraping the out-whale paint where the water has penetrated under the epoxy. I'm in two minds as to 1) sand and repaint or 2) remove all paint then oil it.

[Paul H (admin)]

Taken at roughly head height above the waterline - the fence post should be parallel to the waterline:



Paul Fisher drew an alternate sail plan with a mizzen and bowsprit - if continued forward the sheerline hit the end of the bowsprit, as above.

Looks about right to me.

-Paul

[Port-Na-Storm]

That'll do for me.  
Mizzen eh? Now you're talking, and of course it'll need a jolly little bumkin.  

[GregHBBR]

GregHBBR wrote

Ideally, the bowsprit will pass through the fore deck in order to follow the line of the gunwales.

I meant the water line, or something close to it. Certainly, I wouldn't want it pointing downwards.

[Jeremy]

Looks good, and actually tends to make the high coach roof look a bit lower, not a bad thing..............

[Paul H (admin)]

Jeremy wrote

Looks good, and actually tends to make the high coach roof look a bit lower, not a bad thing..............

Yes the bowsprit seems to "balance" the boat better.

If you look carefully behind the 45 degree front window there is a mark at 30 degrees on the cabin side. If I remodel the cabin I'll rake the front window at 30 degrees and curve it slightly - she'll look much more streamlined.