Chine runners???

Ah the light comes on - !ting!

So that's what your talking about! Bloody Septic speak!!

Good sensible things for small boat estury and beach work, I like them, in their place!!

 

!!TING!! Drawings will be up soon, the flat bottom is going away (I never liked it anyway) and the chine runners have become twin keels. I'm still working out the angle and length.

Tomorrow I'll move all the empties, bills, pizza, and stuff off the drawings/drawing table and try to figure it out.

Thanks for the comments!

 

Lots Of Links

Hello...

See http://www.twin-keeler.org/ - scroll to boat list at bottom...

The PDF's are fantastic...

SH.

 

Clod - Email Me...

Hello...

Should be in my profile...

Or try herrons01@shaw.ca...

SH.

 

Phil Bolgers dreamboat reminds me of how I got going on boat design by contemplating the bottom 25% of a Zepelin. All the plank developments were identical but I suspected it would only make a good boat if I added the other 75%, weighed it down some and called it a submarine, but yah gotta start someplace ...

Chine runners seem to want to morph into bilge keels or is it vice versa?

Interesting claim about twin keels giving added directional stability; I have a rotomolded kayak with a pair of narrow parallel grooves in the bottom. It is rather short and at take off it yaws from side to side but when I get it going it tracks well, the yawing reduces by more than 50%. I have long wondered why, and suspected the water gets trapped in a spiral inside the grooves and adds effective mass, but maybe its an edge effect.

 

With the current discussion veering towards bilge keels, here is an interesting snipet. The July 1995 issue of the Boatman, a UK mag, has an interesting account of the P'tit Bonheur, a French boat based on the British barge yacht, which was in turn inspired by the sailing barges of the UK East Coast. She has the usual pair of leeboards found on a sailing barge, but carried internally so they can be retracted into the hull. These enter the hull above the unheeled waterline so when raised there is no turbulence drag. the weather board would easily clear the bow wave as she heels as she is beamy. They are spaced about 75% of the total beam apart so they do not interfere with internal space apart from cutting down a little on cupboard space. She even has twin rudders.

At 23 feet she is rather small by barge yacht standards. She is reported to have excellent performance. I can find no reference to her on the net and few references to barge yachts. they seem to be a dying breed, although another BY, the Waterwitch, is for sale. I can't say as I've heard of this concept before but it sounds like the sort of thing that Phil Bolger would come up with.

 

New to me! sounds a bit pointless as the whole idea of the leeboard was to give room inside the vessel (OK initially it was designed to prevent leeway) I can't see how two off center centerboards (??) could do this? in Fact it would take up more room!! Still as you say it's the sort of thing Phil Bolger would come up with, and if did you darn well it'll work - sailing aspect anyway!! Not sure about the room tho', still I guess on a 23 footer your hardly going to be carrying large cargoes are you?

 

As you can see in the sketch, based on what I recall, the leeboards retracted clear of the floor boards behind seat backs leaving the cabin clear of obstruction. They were slanted similar to bilgeboards; I understand the concept as implemented in the original barges predates the development of bilgeboards although I have difficulty believing that. All in all it seemed a rather bright idea to me and ideal for a lightweight trailer boat.

 

very pretty and swish but what if?.......

Seems it's a case of never use two words when ten will do!! KISS principal applies ALL the time at sea, especially on small boats -salt, sea, and humidity most always spell disaster to enclosed things - chuck in a bit of mud and your in deep 5h1t!! Naw a nice plank on the side is easier, cheaper and safer, Looks the part to if done properly!!

 

Hmmm, This is the direction I'm going. The "plate" along the top of the runner is clearly visible and well below the waterline. When the boat heels it becomes a full length "keel"... I think...

 

Looks er, interesting, but hell it better be strong (and I mean stronger than it should be) can see problems arising there else!!

Could be fun to try! be a place to rest your leeboard mind!!

 

HA! Thought about the leeboard kinda resting nicelly on the runners...

What other Problems, do tell safetywalrus.

BTW the chine runners extend into the hull to contain water ballast. A friend of mine says that I need at least 1400 pounds of ballast, it's a frikin 10' boat, that seems excessive. I was thinking 3 or 4 hundred. 1400 would fill the entire cabin!

 

Hi Jack Alert

Hello...

Imagine the fun you could have if you knew a guy named Jack Alert...

Well - the Whiskey is running dry - and because Jesus rose from the dead - I cannot get more until tommorow...

Here are my quick ideas for a heavy 10 footer - was great fun - I was laughing at the quick renders...

A 7 foot berth can tuck under the cockpit seats - and extend forward for that guy squating inside - heaps of room...

So I am calling it - wait - THE PUG 10...

Before I get completely pied - I know I have a DWG of Laydens Paradox somewhere - with the runners...

SH.

 

I kind of like the renderings, got those funny stick people in them again

The feller in the cockpit looks like he's holding a can of beer.

WARNING! DESIGN CONTENT; I took a 16 foot double ender with 1' of curve over the length at rocker and sides. Then I cut off the aft third, and 1/4 off the bow. Then added a little point in front and put a cap on it to make it look like an el camino.

Pug 10 is cool,

Chris

 

The First One Is Free

Hello...

Clod - you know you want Rhino...

3.0 runs on low end - low memory machines...

That Camino is only good for Mexican whores - proper British brunettes - and other - would pay off the date - with a proper English excuse as soon as they knew it was yours...

Perhaps a chopped and lowered Austin Martin on alloys - or an old red Jag rag - per inspector (Morris) - or whats his name - Walrus would know...

I married British - THANK GOD - pasty skin and all - THANK GOD...

I can still mail all the bits on a CD...

That said - I would take the Camino with a 350 or go Olds 454 - and hammer the firewall...

Got a line on a running IH for 4 grand...

As things went - that 'feller' in the cockpit should be swilling CC - (Canadian Club) - but those times have fallen away...

Pug 10 centers - they remain - perhaps tomorrow...

Christ I wish I was in Looes Harbour just now - seems so far away...

Burp...

SH.


SH.