Search found 79 matches

by cfwahl
07 Mar 2005, 02:49
Forum: Measurement and Measurers
Topic: Measurers without borders
Replies: 15
Views: 14048

I hope that this clears up your doubts. I wish it did, but unfortunately not . . . May a measurer from Brobdignag (BRO) certify a boat registered in Lilliput (LIL), providing that this measurer is "appointed or recognised" by Lilliput's NCA? Basically, NO, the measurer would not be following the ru...
by cfwahl
05 Mar 2005, 23:29
Forum: Measurement and Measurers
Topic: Measurers without borders
Replies: 15
Views: 14048

Measurers without borders

The ERS defines Official Measurer as "a person appointed or recognised, by the MNA of the country where control takes place, to carry out certification control." May a measurer from Brobdignag (BRO) certify a boat registered in Lilliput (LIL), providing that this measurer is "appointed or recognised...
by cfwahl
21 Feb 2005, 02:18
Forum: Measurement and Measurers
Topic: Guide to 'How do I register/certify an IOM'
Replies: 9
Views: 10516

the measurement forms are a good start as to what to expect in terms of what the measurer is looking for, although his job should go beyond simply checking off the list and filling in the form and include a check of ALL rules in the relevant parts of the class rules regardless of whether they are s...
by cfwahl
14 Feb 2005, 01:20
Forum: Class Rules
Topic: Foam Hull
Replies: 17
Views: 12416

Chairman wrote:There is gathering interest, again, in a rule change to limit thickness.
Just so nobody misunderestimates the Chairman: the rule proposal referred to would limit "thinness" or (in other words) establish a minimum thickness; right, Lester?

Charles Wahl
by cfwahl
14 Feb 2005, 00:55
Forum: General IOM
Topic: The Forest vs The Trees
Replies: 20
Views: 11624

Chairman Lester Gilbert wrote: But on the subject of restricting fin thickness, I know there is enough interest in this issue to make it a certainty for a future proposal to the World Council and to the Owners. Just so I know, where does this interest reside? I'm not above a bit of hugger-mugger pol...
by cfwahl
30 Jan 2005, 03:27
Forum: General IOM
Topic: The Forest vs The Trees
Replies: 20
Views: 11624

So much for this forum, what about the IOM class?

In reading this thread, I see a lot of discussion about who has or should have access to this forum, and what that might have to do with the IOM class promoting itself; but I don't see anyone responding to Roy Langbord's original question: where should the IOM class go, and does that involve changes...
by cfwahl
29 Jan 2005, 19:11
Forum: General IOM
Topic: Recommendation for radio with exponentials
Replies: 2
Views: 1746

Recommendation for radio with exponentials

I'm all set (trusty old Futaba FP-7UGFS), but there's a sailing compadre here who would like to upgrade to a radio that has servo reversing, adjustable travel volume, AND exponential programming for BOTH throttle (sail) and aileron (rudder) channels, on a two-stick transmitter. And of course, availa...
by cfwahl
18 Sep 2004, 15:24
Forum: General IOM
Topic: performance of iom sailboats, available for download
Replies: 1
Views: 2481

Re: performance of iom sailboats, available for download

The Triple Crown, the Arrow, the Silver, the Noux, the Vanquish and the Momentum, which one Judging from the question, this is probably your first IOM, possibly your first model sailboat. My advice would be to buy a "previously owned" boat in good condition, and sail that for awhile. You can spend ...
by cfwahl
26 Aug 2004, 02:53
Forum: General IOM
Topic: Side Stay Height?
Replies: 6
Views: 4560

If you want some statistics to compare, try this link:
http://www.radiosailing.org.uk/european ... survey.pdf
It's the most complete survey of competing IOM yachts that I've seen; well done.
by cfwahl
21 Jul 2004, 06:32
Forum: General IOM
Topic: Rough IOM A rig set up
Replies: 1
Views: 2098

geoffreythompson wrote: how big is a finger Mine can vary from 1/2" to 1" for jib and main draught settings My "finger" is 12.7mm in heavier air, and swells to 25.4mm in light airs, but in the very lightest airs, especially if not too puffy, I might go back down to near 12.7mm. Just pulling your cha...
by cfwahl
21 Jul 2004, 05:59
Forum: Class Rules
Topic: Boom Topper interpretation discussion
Replies: 12
Views: 8796

Thanks to Lester for his informed and thoughtful response. All previous interpretations are cancelled every time a new Class Rules document is issued. The latest Class Rules are dated May 2003, for example, and so every interpretation prior to May 2003 is null and void: RSD Regulations wrote: ... ru...
by cfwahl
19 Jul 2004, 19:46
Forum: Class Rules
Topic: Boom Topper interpretation discussion
Replies: 12
Views: 8796

Steve Landeau wrote: I don't think it was deliberately written to prohibit this type of restraint. I think it was simply overlooked. Also, as we have seen in the past, the TC may decide that it should be legal, and could effectively change the rule within the interpretation. In making interpretation...
by cfwahl
10 Jul 2004, 05:18
Forum: Class Rules
Topic: Arm winch and separate sheets
Replies: 18
Views: 11674

Lester wrote: Ah, the beauty of the closed class rule. Tell me about it! But what are the alternatives, if one wants a "one-design" yet home-designed and home-built class that nevertheless offers some freedoms in hull and appendages? Well here's a radical idea, but consider it: the rules are pretty ...
by cfwahl
07 Jul 2004, 05:35
Forum: Class Rules
Topic: Arm winch and separate sheets
Replies: 18
Views: 11674

Here's some food for thought: in a plain-vanilla drum-winch installation that you can see at any sailing venue, there are actually two separate physical lengths of line, each connected the drum on one end, and to each other at a ring or other fitting where the sheets attach to the "circuit." The lin...
by cfwahl
22 Jun 2004, 02:59
Forum: General IOM
Topic: HITEC HS 815
Replies: 7
Views: 4708

I don't really have hands-on experience with either one, and don't have a personal preference for arm or drum winch type. The most important thing, in my opinion, is that the servo always stops in the same place close-hauled. So if you have one of each, I'd set up a test installation, and see what e...
by cfwahl
20 Jun 2004, 17:41
Forum: General IOM
Topic: HITEC HS 815
Replies: 7
Views: 4708

I haven't used one of these, but I do know a bit about servos. The HS 815 is, on paper, more powerful than the digital 5735. It weighs a bit more, rotates about a third as fast, and costs (only) about $20US less than the 5735. Digital servos have two distinct advantages: 1) their accuracy at repeati...
by cfwahl
04 May 2004, 03:30
Forum: General IOM
Topic: Arm winch sheeting configuration
Replies: 2
Views: 2511

Rey,

Thanks for the description; I think I've got it.
by cfwahl
02 May 2004, 17:57
Forum: Class Rules
Topic: Differential control of jib and main
Replies: 3
Views: 3548

Differential control of jib and main

With an arm winch (or with a spectacular sort of drum on a drum winch) it is possible to intentionally make the jib behave differently from the main: sheet out at a somewhat faster or slower rate at close-hauled, for instance. Is this acceptable practice? I don't see what prohibits this, though ther...
by cfwahl
02 May 2004, 17:16
Forum: General IOM
Topic: Arm winch sheeting configuration
Replies: 2
Views: 2511

Arm winch sheeting configuration

I'm thinking that I will buy an arm winch for a new boat. The pictures I've seen of Lester Gilbert's and Trevor Binks's winches only show the winch area, and not how the system is rigged beyond that. Each of these has only one line attached to the winch arm, apparently run through a sheave to double...