IOMICA Forum

Hi Roy, Interesting question. Here are the rules I see that apply directly. Rule 4 decision to race This suggests that the sailor, knowing that there may be weeds, decides to start and continue in the race, acccepts the chance of being affected by weeds. R 32.1.e abandon after the start for any othe...

To add to what Bruce has said, here is one additional suggestion to avoid disturbing the fin box by removing the fin during setup. I taped the fin around where it exits the hull with two inch mylar packing tape, and coated that with parting agent. Then I left the fin in place while the epoxy sets up...

Hi Andy and welcome. If you have not read this article, it is very interesting background on the class and has some charts showing max beam/waterline beam and other relationships for a number of popular designs. http://www.onemetre.net/OtherTopics/IOMcomparisons/SeahorseArticle.pdf When you talk abo...

Hi Tony, I think you are overlooking one important fact. The Secretary, Barry Fox posted all the resolutions as individual topics on the forum under the general heading of 2010 Agenda resolutions in mid-September. This was a great help and allowed debate on the more complex items for almost 2 months...

These stats are both scary and appalling. The disinterest in the class rules is a warning for the future. You get the rules you deserve, either by action or, in this case by neglect. While some of this year's motions were housekeeping, there were 4 really important and significant items, yet few sho...

The first proposal if approved, will not help reduce the cost of the IOM Worlds. There are several issues. First, the Worlds uses Umpires to make calls on the course. (A jury sits in a hearing room and hears protests, observes just call contact and leave the decisions to the skippers). Second, the I...

Here are the corrected links for the above post.

http://www.sailing.org/tools/documents/ ... 413%5D.pdf

http://www.sailing.org/tools/documents/ ... 437%5D.pdf

John

I have a question... didnt take long :lol: Fin....never made a boat before so apologies if this is stupid... The total draught is taken from water line? 370 mm .... 420 mm Then the fin has to be sized to fit with in 370 mm .... 420 mm, or is the fin a max of 420mm? The total draft is from the water...

Also welcome.

If you have not yet signed up, there is a great forum is Aus.

http://rc-yachts.net/smf/index.php

John

For an inexpensive sail winch, the Hitec HS 815 arm winch is a bargain. lots of travel (about 140 degrees), fast, powerful and very reliable at just $50. It weighs a bit more than the latest digital servos but is not heavier than an RMG. The HS785 drum winch at the same price has the power and the t...

This is covered by RRS R 53

53 SKIN FRICTION
A boat shall not eject or release a substance, such as a polymer, or
have specially textured surfaces that could improve the character of
the flow of water inside the boundary layer.

John

Hi Roy, What I am getting at is ISAF reg 26.10 (in the section Regulations on Administering International or Recognized Classes ) 26.10 Appoint an International Jury for the World Championships unless otherwise agreed with ISAF. I think that is the section that requires us to have an International j...

One problem that comes with the success of the IOM class is the large fleet that assembles for major events. This requires us to run heats. To minimise protest hearings we have ‘on the water’ calls and ‘no appeals’ to ensure no adjustments to the promotion/relegations implicit in the HMS heat system...

Hi Oliver,

I am getting the video in Canada ok. The only problem is that the aspect ratio is distorted. The picture is too tall, so people are tall and skinny and the rigs and fins all look way too long.

John

Hi Sean,

I don't know for sure, but I think that you join directly, not through a club.

But you can join the MYA forum without yet being a member, and post your question there.

John

Welcome Sean.

If you have not already, you should join the MYA and visit the MYA site and forum to find out about local measurers.

http://www.mya-uk.org.uk/

John

The issue of telemetey (signals from the boat back to the TX) is going to come up again. Spektrum DX8 offers four functions including battery voltage, internal temperature and others. http://www.spektrumrc.com/Products/ProdDefault_Static.aspx?ProdId=DX8 and click on the Telemetry Tab My reading of t...

Barbados has issues a new series of postage stamps recognizing sailing.

Just look closely at the class featured on the 'most' expensive stamp.


http://bps.gov.bb/index.php?ZZZ=1_1055_ ... YYY=30_118

John

Hi Bruce, I am not arguing for or against spectra. The hull materials list allows thermoplastic. I did a google search and found a reference that Spectra may be a thermoplastic - I don't know, I'm not a chemical engineer. Are there different kinds of thermoplastic? Are only some allowed? Is thermopl...

I found the AMYA US1M construction guide the most useful.

http://www.theamya.org/boats/us1m/us1mcons.php

While I have made a fin out of a balsa, ply sandwich covered in glass, the CF fins are much better. Unless you get into vacuum bagging, it is easier to buy the CF foils.

John

I think that the issue of spectra or dyneema is a bit more complex than just a 'no'. According to Wikipedia, they are brand names from two manufacturers for the same thing. Also from Wikipedia, they are thermoplastics (long chain polymers). The closest document that I could find was the rules interp...

I use thin plywood .079mm (1/32nd) and seal it (both sides) with a thinned coat of clear epoxy resin.

John

Hi and welcome to the class.

Glass over balsa is allowed. I have built several this way. The rule about being able to inspect the layup applies to 'all-glass' hulls.

John

Good news. The forum is now back up and running.

John

For the last two days, I have not been able to log onto the US IOM forum at http://onemetre.sbmyc.com and get a scripting error.

Is anyone else having this problem, or is it just me. (I have tried deleting the cookie and tried to log in again, but it still fails).

Thanks

John

Hi Robert,

It might be better to move this topic over to the RC sailing forum, as that forum has a lot more scratch builders who can chime in. Another advantage is that it is possible to post construction photographs and that will aid answers.

http://www.rcsailing.net/forum1/forum.php

John

I take at the double keel plank areas I have to trim the shadows double. And for the double deck rails...those go on top of the shadow lines, correct? Roberto Cut a notch in the shadow to the size of the inset plank, so that the plank is flush with the shadow. Then glue on the first outer (skin) pl...

Triple Crown plans are published by the UK MYA

http://www.mya-uk.org.uk/suppliers/triplecrown.html

You can buy the complete plans, or download the PDF. The PDF sections are full sized. Note that the lines show the outside dimensions and must be reduced by the thickness of the planks.

John

Here is a great guide to building a wooden hull. It talks about a US1M, but is also appropriate for an IOM. http://www.theamya.org/boats/us1m/pdf/us1mconst.pdf There are IOM plans for various hulls. I have built the Triple Crown, but I prefer the EMO from Frank Russell. The EOM is easier to build as...

If you are running an RMG winch, then consider the 9.6v 1200ma pack. (especially if you have some corrector weights that you could remove to counter the slight extra weight over the 6v pack). The RMG should really fly on 9.6v LiFePO batteries. http://www.batteryspace.com/lifepo418650battery96v1200ma...