[quote I am waiting to hear from Fred this weekend on how he likes his new LR2. I have his Boyer MKIV. It is sailing well, but sometime at the beginning of the year, I will contact Ian about the larger format hulls.
Tom, I talked to Fred earlier in the week, he seems happy enough with the boat and likes the performance in a chop, but he has a ways to go yet to be as fast as Ian downwind yet, but we'll work on helping him set it up right so he's at the same pace. RG
Re: New A-class with a radical bow shape
[Re: RetiredGeek]
#112637 09/08/0709:53 PM09/08/0709:53 PM
BTW, the pitch up in the first pic of the 4 above is from quickly rounding up in a puff, we get a similar but slightly different situation happening when the boat accelerates also, but in both cases its just one cycle and then it stays level again. RG
Re: New A-class with a radical bow shape
[Re: RetiredGeek]
#112638 09/08/0711:07 PM09/08/0711:07 PM
I was looking at some of the pictures & video again and noted that the boat doesn't appear to upset the local wave pattern (as in chop), do other boats do this also? makes it look like its working in isolation of the environment Q
Last edited by Questioner; 09/09/0706:53 AM.
Re: New A-class with a radical bow shape
[Re: Questioner]
#112643 09/09/0707:12 AM09/09/0707:12 AM
this tends to happen to all cats, but more so on conventional hulls....as the water piles up on the inside of the hull=more volume=more motion. an example is RG
Re: New A-class with a radical bow shape
[Re: RetiredGeek]
#112645 09/09/0711:27 AM09/09/0711:27 AM
In the pictures I only see small wind induced wavelets.
I no see no basic chop there of the kind you get from passing powerboats or when the wind has been blowing on the other side of the (large) lake for a while.
I would call this flat water. Sorry
The picture of that FX-one is showing some chop (the litte white specs in the background), the pics of the LR2 don't.
Wouter
Last edited by Wouter; 09/09/0711:31 AM.
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
Re: New A-class with a radical bow shape
[Re: RetiredGeek]
#112646 09/09/0711:32 AM09/09/0711:32 AM
Fred should come up to speed pretty quickly having been around these boats since 1969. One of the last of the early ones in the class. If your hull shape does eliminate some of the drag & turbulence from boat generated waves, it should definately show up on the performance/speed end.
Tom Siders A-Cat USA-79 Tornado US775
Re: New A-class with a radical bow shape
[Re: windswept]
#112647 09/10/0711:35 AM09/10/0711:35 AM
Ian is very fast with this new design in big chop too. I didn't see it pitching or throwing waves. Remember- I have actually seen this boat sailing in pretty much all conditions including 22+. Some say ugly? Whaaa? You guys have got to be kidding. "Form follows Function" I first heard in art class some years ago: What we have here is its Epidome. By golly, that would be a good name too.... <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
Dacarls: A-class USA 196, USA 21, H18, H16 "Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
Re: New A-class with a radical bow shape
[Re: dacarls]
#112651 09/10/0711:12 PM09/10/0711:12 PM
Ian is very fast with this new design in big chop too. I didn't see it pitching or throwing waves. Remember- I have actually seen this boat sailing in pretty much all conditions including 22+. Some say ugly? Whaaa? You guys have got to be kidding. "Form follows Function" I first heard in art class some years ago: What we have here is its Epidome. By golly, that would be a good name too.... <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
dacarls, thanks for the support as being in NZ Im a little remote from what happens in Michigan, although Im sure Ian and John give me accurate reports :-)which I try hard to share openly within the bounds of what I want to share here. As for Epidome....gonna have to think on that....or you can try and sell it to Ian <grin> RG
Re: New A-class with a radical bow shape
[Re: RetiredGeek]
#112654 09/11/0708:58 AM09/11/0708:58 AM
Ncik....we modeled just about everything we could in an effort to understand the dynamics....is more work than I care to think about right now, but the benefits of it appear to be showing bit by bit as we discover how to sail it. An example would be that we just found how to raise the windward 500m average VMG by over 2 knots this week and Im pretty sure we are not done yet. RG
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