IOMICA Forum

Thanks Robert for this excellent link. It helped me understand much better the history and the intent of the rules and the format and the practice.

RoyL wrote: And most important, what do we do to fix it?

Change the measurement form to be more meaningful. The rig form requires that the sails be measured...do the same for the boat.

Yes, you are missing something. Read the top of the form where it advises measurers that the boat must be in compliance with all class rules of sections D,E,F,G and H even if not mentioned in the form. . Roy, the problem is that the lengths and weights for the hull are in section C and so are not i...

In the thread on corrector weights You then have your boat measured and receive a certificate. Hi Roy, I cannot see anything on the hull measurement form that requires the measurer actually to measure the hull length, weight, keel weight or depth items. The measurement form checks for materials and ...

moved to Class Rules forum

Several items have appeared in this thread. 1. How should corrector weights be attached to the hull. 2. Can corrector weights be moved or altered to alter the trim of the hull 3. can corrector weights be moved between heats (when is a boat racing?) Item 1. My view is that corrector weights must be m...

I disagree with that argument as E1.1 defines the word 'Race' as a noun. The definition of 'Racing' uses the word as a verb. So while a boat that is promoted to the next heat has not yet finished the Race (ie her final finish position is not yet determined), she is not 'racing' in the period between...

It is quite clear to me that the battery falls into the category of "related equipment". Therefore the battery cannot be moved around the boat. The rules says to put the battery in essentially the same location. So the intent is to try to be accurate. It is not acceptable to put the battery in (say)...

Herb 3 wrote: No, IOM rule 5.5 (5.5.5 ) The kicking strap shall act only in TENSION from BELOW the main boom. Period!

Hi Herb,

To which rules are you referring? That numbering does not match the IOM rule format numbering and I cannot find such wording in my copy.

One last thought raised here. There has been a problem lately with large fleets parking at the start line where it becomes impossible to read sail numbers and see boats and where windward/leeward violations have become rampant. Any ideas how to fix? The concept of putting a judge on the other shore...

The answer requires looking in a couple of places. The issue is that a reversed kicker is working in compression. In the IOM rule, the kicker (boom vang) is listed in the section for 'running rigging'. If you look up 'running rigging' in the ERS (the Equipment Rules of Sailing), running rigging is d...

I have made the jump and ordered a Tx and Rx but I have one final question : how do you bind the Rx to the Tx since there is no crystal to aligns the frequencies ? It depends upon which brand you bought. The Futaba is easy. There is a switch on the side of the Rx that you flip during the bind. For ...

Can someone please explain to me how a LED or LCD readout can be construed as a remote control device? Jim Hi Jim, How you classify the readout device is not the issue. The IOM is a CLOSED rule. That means that you can only have something that is included in the rule, and nothing extra. So adding a...

If I understand your question, connect the battery +vs to the centre pin. Connect one outer pin to the Rx and the other pin to the plug for charging. The -ve wires are joined together. Now with the switch in one position the battery will charge and the Rx is off. Throw the switch and the charge circ...

Hi Don, the answer can be complex, but basically, there is no restriction on materials for your list. The problem is that the rule in its present form omitted to provide a materials list for some rigging items, especially on the mast. Some of the rigging items are covered under the section on the bo...

Good point. I was just surfing, looking for a 5 cell AA battery holder and there ain't no such thing.Thanks Don One option you could try is to use rechargeable alkaline batteries. They are rated at 1.5v each, same as normal alkaline and better than the 1.2v of the other rechargeable types. That way...

Remember Don, that you are also putting that voltage to the Rx. Is that Ok too?

I run an RMG on 7.2v, but it has a voltage regulator that provides 5V to the Rx and rudder servo.

Hi Don, I don't know how low you could go with torque. I have used a standard analog servo Hitec HS-425BB DELUXE rated at 46oz and a high speed digital servo (as opposed to a high torque) Hitec HS-5625MG - DIGITAL rated at 110oz in my IOMs they both worked fine. They never showed any sign of being u...

Ok guys, here is what I don't understand. Why haven't any of you gotten your NCA to put up a proposal to have battery read out devices included in the IOM Class Rules? . I did put a change that would have covered this into my NCA. They came back with an answer that there was no AGM in off-world yea...

Hi Barry, I think you are on to something here. It is really unfortunate that the folks who opened up D2.4 to deal with the multiple Rx issue did not at the same time also deal with the voltage display issue that had also been discussed at length in this forum. I think your idea that a voltage displ...

Lawrie is closest

This whole thing could be cleared up if we passed a rule change that said the following: "Rig Fittings/Materials: Materials for rig fittings shall be unrestricted". Any feedback? Any proposals? Roy, I believe that this relates to Spars and so belongs in section F. If it were in F1 or F2, it would a...

This is how I read the class rules.

When a boat is exported, the original certificate is to be sent to the new country. Rule A.11.4


The new country issues a new number. Rule A.14.1(a)

The number is the country letters plus a sequential number.

Is anyone else having a problem accessing the US IOM forum? I just get a blank page.

In my opinion, a good rule says what it has to say and says nothing where it does not have to. This discussion is a good example. The most important part of the radio equipment rule is the restriction to two servo control functions, specifically sail and rudder control. Some of the wording in D2.4 i...

I see that you have posted a question here that closely resembles the one you posted on the UK Model Yaching board relative to a 6M class project. If I were considering buying a 6M, I would want some basic data, such as LOA, LWL, beam and displacement. I would want to know if the boat was slanted to...

Having reread the class rules and measurement forms several times, I cannot see any reason to prevent filing multiple sail measurement forms for a hull. And there is no reason I can see to change the rules to prevent this. I see it as a 'good thing'. The class rules prevent sail swapping on a given ...

If we do nothing, then the DX6/7 remains accepted as legal. If someone 'protests' or if a formal request is made, then the matter gets refered to the technical committee. They can rule either way. If they rule against then we need a rule change. The best rules don't say anything where they don't hav...

Separate from the legality question, I don't think I would want to add fillers to bulk up the hull. I would be concerned about weight. I would look at adding some strip balsa to the area, and then refairing (with glue and filler). Then the weight is minimized and the legality does not come up. Inter...

I am not sure that the quoted interpretation validates this question. The question is about increasing displacement and using fillers. It is not part of the layup, nor is it for fairing and painting purposes. Separate from the legality question, I don't think I would want to add fillers to bulk up t...