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Re: BITZA F16 [Re: pepin] #191731
09/23/09 06:14 AM
09/23/09 06:14 AM
Joined: Jun 2001
Posts: 548
MERRITTISLAND, FL
Matt M Offline
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Matt M  Offline
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MERRITTISLAND, FL
Originally Posted by pepin
Originally Posted by Mark P
[...]Have a look at this photo and see if you can spot the mistake[...]
The mistake is obviously the fact that Wayne is using a purple spinnaker...


The mistake is that he forgot to put on a shirt laugh

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Re: BITZA F16 [Re: Matt M] #191734
09/23/09 06:36 AM
09/23/09 06:36 AM
Joined: May 2003
Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

Carpal Tunnel
Rolf_Nilsen  Offline

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West coast of Norway
Originally Posted by Matt M


The mistake is that he forgot to put on a shirt laugh



Ooooo, I was itching to say something like that, but I am too nice grin

Re: BITZA F16 [Re: Rolf_Nilsen] #191759
09/23/09 08:53 AM
09/23/09 08:53 AM
Joined: Dec 2005
Posts: 443
Edmonton, Alberta, Canada
bobcat Offline
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bobcat  Offline
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Edmonton, Alberta, Canada
I would say something clewless but that would be tacky.

Re: BITZA F16 [Re: Mark P] #191765
09/23/09 09:38 AM
09/23/09 09:38 AM
Joined: Oct 2002
Posts: 606
Maryland
Kris Hathaway Offline
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Maryland
Lack of sunscreen?


Kris Hathaway
Re: BITZA F16 [Re: waynemarlow] #191778
09/23/09 12:21 PM
09/23/09 12:21 PM
Joined: Sep 2007
Posts: 571
Hamburg
Smiths_Cat Offline
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Hamburg
Very beautiful.

Originally Posted by waynemarlow

Now we can either rake the bow back, put a lot of carbon and reinforcing in the hull to take the increased loading or we can move the mounting point as far foward as possible by leaving the bow almost vertical, I choose the latter as unless you are doing about 30 knots the true wave piercing bows simply do not work. I do understand why we narrow down the top part of the hull but it has nothing to do with wave piercing. smile

Would I do the same if I was building another boat, nah raked back bows just look so much more ubber cool cool


Raked back bows looks cool now, but when the fashion trend is over, it looks as old school as a Dart 18. Seeing that you use your brain rather than following the trend makes the boat even more beautiful.

With the A-cat mast (9m length?), what is the final weight? 85kg?

Cheers,

Klaus

Re: BITZA F16 [Re: Smiths_Cat] #191785
09/23/09 02:14 PM
09/23/09 02:14 PM
Joined: Sep 2005
Posts: 893
W
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Originally Posted by Smiths_Cat
Very beautiful.

Originally Posted by waynemarlow

Now we can either rake the bow back, put a lot of carbon and reinforcing in the hull to take the increased loading or we can move the mounting point as far foward as possible by leaving the bow almost vertical, I choose the latter as unless you are doing about 30 knots the true wave piercing bows simply do not work. I do understand why we narrow down the top part of the hull but it has nothing to do with wave piercing. smile

Would I do the same if I was building another boat, nah raked back bows just look so much more ubber cool cool


Raked back bows looks cool now, but when the fashion trend is over, it looks as old school as a Dart 18. Seeing that you use your brain rather than following the trend makes the boat even more beautiful.

With the A-cat mast (9m length?), what is the final weight? 85kg?

Cheers,

Klaus


Oh I like that, nice comment on the boat rather than the tacky clewsy bit, yes I did have the spinnaker back to front when first putting it on, wasn't thinking very straight after the cider offered for a liquid lunch by guess who.

Talking of weight, I think the central beam has a lot of merit, it saves a lot of heavy components and if the forestay is added into the equation, it means a proper working jib and a screacher rather than the spinny we now use. The beam and front pole is only about 2 kilos at the moment so lighter than a conventional snuffer setup. Anyone out there good at converting loads to carbon fibre layup ?

Re: BITZA F16 [Re: waynemarlow] #191792
09/23/09 04:24 PM
09/23/09 04:24 PM
Joined: Jul 2007
Posts: 976
France
pepin Offline
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France
Originally Posted by waynemarlow
Talking of weight, I think the central beam has a lot of merit, it saves a lot of heavy components and if the forestay is added into the equation, it means a proper working jib and a screacher rather than the spinny we now use. The beam and front pole is only about 2 kilos at the moment so lighter than a conventional snuffer setup. Anyone out there good at converting loads to carbon fibre layup ?
Okay, now I'm lost. I don't see how the central beam is saving that much weight? Not to mention that you were probably the one who removed it from the 5.2 I have in my back garden when it was yours...

What are the advantages of the central beam and under tramp snuffer? I can see the following:

- Reduced weight and reduced windage on front, centering the mass is always good.
- Self sustained pole is probably real nice™ when rigging, one less thing to attach around
- Solid attachment for central sheeting (I'm curious to see how well it works as you still need to throw the extension on the back of the boat. I guess if it works for the A class, it can't be that bad)
- Rigidity? Is it really helping?

There are inconveniences probably:

- Lower clearance under the trampoline, the central beam may slap in waves?
- You have to either pick a side to launch the spi or forget about the jib completely and install split forestay. BTW, if split forestay are installed with no line from the mast to the middle of the pole aren't you afraid the pole is going to invert? How are you inducing pre-bend?
- launching and snuffing the spi may take longer as well as you have to pull all the length of the pole...
- You need extra long spi sheets to go all the way back to the trampoline

Anyway it's really nice to see something really new for a change, and I must admit I'm curious to see the results. Can I get a ride? smile

Re: BITZA F16 [Re: Rolf_Nilsen] #192148
09/28/09 05:57 AM
09/28/09 05:57 AM
Joined: Jan 2009
Posts: 5,525
pgp Offline
Carpal Tunnel
pgp  Offline
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Another tid-bit for Rolf. We discussed this boat some time back and now it's being readied for a new life!

http://forums.sailinganarchy.com/index.php?showtopic=96734


Pete Pollard
Blade 702

'When you have a lot of things to do, it's best to get your nap out of the way first.

Re: BITZA F16 [Re: pgp] #192189
09/28/09 11:33 AM
09/28/09 11:33 AM
Joined: May 2003
Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

Carpal Tunnel
Rolf_Nilsen  Offline

Carpal Tunnel

Joined: May 2003
Posts: 4,451
West coast of Norway
A beautiful and very interesting boat, well ahead of her time. Hopefully her time have come this time over. Thanks for letting me know. Will be very interesting to see how she comes along.

Re: BITZA F16 [Re: Rolf_Nilsen] #192322
09/30/09 02:40 AM
09/30/09 02:40 AM
Joined: Sep 2005
Posts: 893
W
waynemarlow Offline
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waynemarlow  Offline
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Posts: 893
Have a look at Hakan's latest attempt at a A class with Spinnaker on www.catsailor.com/forums/ubbthreads.php?ubb=showflat&Number=192263#Post192263

Interesting to read he can get the boat out of the water on its curved foils, pity I cannot afford the money to go all out as he has done. 20 knot plus already so it is definately fast.

Re: BITZA F16 [Re: waynemarlow] #193177
10/10/09 01:53 PM
10/10/09 01:53 PM
Joined: Sep 2005
Posts: 893
W
waynemarlow Offline
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Posts: 893
Bitsa has finally gots its bits wet, had a first sail today in low winds and surprising not to much to tinker with. Quite pleased in a way as the boat is very much not far from final settings with an almost neutral helm and seems to be doing most things reasonably correctly.

One thing for sure though you really need to be in the middle of the boat, as as soon as you get near the back you can stand the boat on its butt sinking the transoms really easily, mind you the Stealths do have a big wide fat bottom so you can't quite compare like for like.

The Spinny under tramp snuffer seems pretty cool and as yet hasn't failed to work which is a surprise as its a quite different approach to things.

I plan to sail again tomorrow and sorting out a few things so hopefully will get some on water time smile

Re: BITZA F16 [Re: waynemarlow] #193179
10/10/09 02:35 PM
10/10/09 02:35 PM
Joined: May 2003
Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

Carpal Tunnel
Rolf_Nilsen  Offline

Carpal Tunnel

Joined: May 2003
Posts: 4,451
West coast of Norway
Ooooo!! Great stuff! Please give us more smile

(And pics of the under-tramp snuffer in its operational state)

I am very envious of you. Last night I pulled about 1500 staples and tonight I have been sanding..

Attached Files
lørdagskveld_i_båtverkstedet.jpg (1097 downloads)
Standard sanding gear.
Re: BITZA F16 [Re: waynemarlow] #193193
10/11/09 04:34 AM
10/11/09 04:34 AM
Joined: Jul 2007
Posts: 976
France
pepin Offline
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Posts: 976
France
Originally Posted by waynemarlow
Bitsa has finally gots its bits wet[...]I plan to sail again tomorrow and sorting out a few things so hopefully will get some on water time smile
Damn, I'm stuck at home with the kids, I would have liked to see this thing in the flesh...

Re: BITZA F16 [Re: pepin] #193253
10/12/09 09:48 AM
10/12/09 09:48 AM
Joined: Sep 2005
Posts: 893
W
waynemarlow Offline
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Posts: 893
You didn't miss much Pepin, Friday nights rather long frivolty time imbibing rather too much " Henley Gold " and an early morning start Saturday meant that looking out the window Sunday morning and seeing doom and gloom weather wise, meant a very instant decision of staying in bed for an extra hour or two of kip. Went to the Rugby in the afternoon so no sailing. cool

Re: BITZA F16 [Re: waynemarlow] #193265
10/12/09 02:33 PM
10/12/09 02:33 PM
Joined: Jul 2005
Posts: 465
Oxford, UK
pdwarren Offline
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Oxford, UK
Originally Posted by waynemarlow
looking out the window Sunday morning and seeing doom and gloom weather wise, meant a very instant decision of staying in bed for an extra hour or two of kip.


I very nearly did exactly the same, but am very glad I didn't - you missed a great morning's sailing.

Looking forward to seeing Bitza on the water.

Paul

Re: BITZA F16 [Re: pdwarren] #193277
10/12/09 06:53 PM
10/12/09 06:53 PM
Joined: Feb 2005
Posts: 4,118
Northfield Mn
Karl_Brogger Offline
Carpal Tunnel
Karl_Brogger  Offline
Carpal Tunnel

Joined: Feb 2005
Posts: 4,118
Northfield Mn
Very cool Wayne. Its gotta be quite an accomplishment to design, and build your own boat. I know I don't have the patience to do it.

Re: BITZA F16 [Re: Karl_Brogger] #193284
10/13/09 04:37 AM
10/13/09 04:37 AM
Joined: Jan 2009
Posts: 5,525
pgp Offline
Carpal Tunnel
pgp  Offline
Carpal Tunnel

Joined: Jan 2009
Posts: 5,525
News says ya got snow already. frown


Pete Pollard
Blade 702

'When you have a lot of things to do, it's best to get your nap out of the way first.

Re: BITZA F16 [Re: pgp] #193285
10/13/09 05:03 AM
10/13/09 05:03 AM
Joined: May 2003
Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

Carpal Tunnel
Rolf_Nilsen  Offline

Carpal Tunnel

Joined: May 2003
Posts: 4,451
West coast of Norway
Snow is beautiful. It is not too cold to sail before the water freezes solid.

Attached Files
office-view-20091013.JPG (837 downloads)
Todays view from the office.
Re: BITZA F16 [Re: Rolf_Nilsen] #193286
10/13/09 05:09 AM
10/13/09 05:09 AM
Joined: Jan 2009
Posts: 5,525
pgp Offline
Carpal Tunnel
pgp  Offline
Carpal Tunnel

Joined: Jan 2009
Posts: 5,525
Take a stroll over to SA. wink
(scroll down a bit)
http://www.sailinganarchy.com/index_page1.php


Pete Pollard
Blade 702

'When you have a lot of things to do, it's best to get your nap out of the way first.

Re: BITZA F16 [Re: pgp] #193287
10/13/09 05:15 AM
10/13/09 05:15 AM
Joined: May 2003
Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

Carpal Tunnel
Rolf_Nilsen  Offline

Carpal Tunnel

Joined: May 2003
Posts: 4,451
West coast of Norway
At least the beer is cold laugh
(so that is why the brits drink it lukewarm)

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