Colin Helliwell

My guess would be a failed microswitch or its solder joints. Is it flakey or completely unresponsive?

Primarily for bending new spreaders to desired and equal angles. Dimensioned for an IOM, with 11mm mast and 1.6mm linking rod. The inner piece is intended for also helping to check angle equality after-the-fact, when shrouds are already installed in the tips and so can overhang the ends of it. [Unsure of the best width vs. 'discrimination of angles' for that - tried to aim for narrow enough to suit typical B rig on a typical narrow hull....]

Can't remember where I read (or perceived) it, but I'd be grateful to a Measurer who did it for fellow members for free - esp. at lakeside. Which echoes Derek's point about how much many of us voluntarily do for others/club/sport. If you're travelling to a Measurer and asking for a bit of their home time then some kind of gift (or even donation to their fave charity) would i think be kind and polite. I'd like to think that the act of charging a 'fee' isn't necessary to us for the purpose of a certification being valid. Measurers are, after all, formally certified by MYA/RYA? As per Brad and John - a sailmaker shouldn't be selling "measured sails" unless they are, within Class rules. But I don't see why such subcontracting shouldn't be permitted. (= why should it be complicated).

My Joysway A brushes the backstay very slightly, but has never snagged so much to be a problem when sailing, for me. I have seen others trim a small amount off the area of top batten. Even so I'd suggest checking mast rake first, before that - especially if you've just built the boat from scratch.

As Graham says, you don't want anything that's going to rip/shear when tightened, and don't grease it. I daresay there's suppliers who do sell a such a custom made seal, at a price. But if it were me - esp. if urgent - I'd trawl thru cupboards for suitable odds and ends of 'whatever' (OK, I'm a bit of a hoarder!). Even a piece of very dense cardboard is going to give a decent seal for a day or two at a time. Might be short-lived and a bit sacrificial, but if you can find summat to hand, and its cheap...?

Thanks, that was what I'd been assuming. Fortunately I don't so it as often these days :)

Sorry, vaguely related to my other post, but its just sprung to mind lol. You round a mark correctly and without touching it. For some prior reason you need to do a penalty turn, which you make after the rounding. And in doing so (probably doing it too soon!!!), you then touch that same mark. Is that - after the first/real rounding had been legal - an infringement? Does that first rounding ever actually become 'complete', at least prior to rounding the next mark?

Thanks John. Difficult to judge against that - Boat A didn't luff to tack, just carried on in straight line, aiming to get out to the side of the (run) rhumb line. They were, essentially, trying to get clear asap to take the penalty... yet pushed Boat H wide/high in doing so.... In that sense, were they arguably not making adequate effort to keep clear'...?

Windward leg, with a Spreader mark. Boat A infringes at the 1st windward; Continues, reasonably i think, because only 8m to the Spreader mark and little space to do turn it (without carnage in amongst boats still approaching the 1st windward). On way to Spreader, Boat H is slightly overlapping from astern and to windward. Boat A carries on past the Spreader mark in order - aiming to be polite - to get clear before doing the penalty turn. But, in doing so, Boat H itself is therefore unable to bear away onto the run. Boat A had, prior to Spreader, acknowledged their infringement and their need to do a turn. Is there a rule against 'sailing above proper course to the next mark' at a bear away mark - I can't remember. Or, if not, does a boat with a penalty to take need to keep clear regardless of (normal) rights?

Absolutely agree. A good start and nailing the shifts is way more important than (for us mortals) a 0.02% advantage which could be gained by a kicker design. (One which, really, is it actually of aerodynamic advantage?) No offence to the top skippers, it matters to the hotshots at that level, but it really doesn't (and ideally shouldn't) at the grass roots of most of us. Else why are we here....? Class and National associations must not get too up their wotsits, or the sport overall will suffer. Seems to be, sadly, some apparent politics which MYA, IOMICA, Builders seem to be still unable to resolve. Yep, Larry, closed rules - so how hard can it be?

If boat is to min all-up weight with A then it needs to be also with B and C. Shorter spars, hence B/C would need some correction. I probably have a length of 11mm mast I could try to find and to work out g/cm. Got some lead (golf grip) tape which might make up the adjustment, just wondered if anyone already knew the approx typical difference in weights between rigs.

Yep, a switch is handy, but I wouldn't rush to drill a hole either. And certainly not to fit a switch unless its fully waterproof (which the rmg one is). Certainly from the outside (obviously), but maybe from the inside too (condensation, long-term rot). Just unplug a connector - simpler and cheaper and low risk. (An xt30 is less available than xt60, but is a nice compact size, with plenty of current capability). My IOM - rmg290 - used 450mAh across 4hrs yesterday, without switching off.

Do any of the knowledgeable folk know what sort of weight correction is typically needed on B and C rigs, taking A as baseline all-up weight?

Lots still 'ongoing' then..... I tried to read and absorb the whole doc, and one phrase that stood out to me was "this is not a sustainable position for the IOM class". I'd refer readers back to Richard's initial posting, which i took to summarise as "I just want to sail my Viss, but am I going to get protested and thrown out of every event I'm about to enter?" Rules are needed, but for me its a hobby, a way to enjoy free time. Too much politico will spoil it at grass roots and for newcomers, and ultimately therefore for everyone. To repeat, the likes of Richard doubtless don't want to get involved in the miniscule aero arguments [probably of zero effect to 99.9% of participants] about their kicker - they just want to be allowed to compete, learn, enjoy... There's obviously some tragic politics going on over this but, for the sake of UK events, the MYA could perhaps publish a 'ruling for national events for 2026'? Just for clarity and confidence for the vast majority. (And an umpire/jury judgement on a mark rounding is going to have way more effect on a championship than the CSA of a kicker)

In the water, the loading is far more distributed than poking it in one spot with your finger ;) 40"/60" hull - yeah I could imagine the stiffness of carbon being useful there. Personally I'd be too distracted by the plain beauty of a J to notice! I think IOM has max weight for fin+bulb alone, so there's a limit there. Could move the centre-of-gravity of the hull down tho, I guess. (Getting into the territory where there's far more knowledgable than me on yacht design lol)

I've had no resilience problems with my DF95. I do see fearful looks from others when someone lobs a df into the lake from a metre away, but there's the question of material suitability vs. design & build quality, etc. If an abs hull has problems then maybe its just not been designed robustly enough [to cater for the material used]. And, as I alluded to on the other thread, be careful with 3d-printed - PLA+ starts to soften at around 60C (PLA at 50). Both temperatures that a car boot could reach on a summer's day!

And, in reality, does carbon have advantages? Assuming most of our classes probably have a minimum weight anyway? And they're sailing on mostly inland waters not taking a Southern Ocean pounding. A lot of One Metres are being 3d-printed in PLA these days (don't leave em in back of car on a sunny day tho....), and winning by virtue of the skipper. I can see carbon spars/fin maybe giving advantage/predictability, but a <2m hull?? Just because new tech can be used, doesn't mean it needs to be. The older simpler and cheaper ways can still be better overall.

A Sunday night musing.... After my sailing today ruled out by ice, I was wondering if anyone has looked at designing a 3d-printed ice skid assembly (to slot into the keel box of, say, a df65)? It might end up being the future of MYA lol

If I were you, as a recent customer, I'd definitely contact Sailboat in parallel. They might be unclear/guarded themselves at this stage, but if their product isn't class legal then it's gonna be in their interests to clarify, understand and/or offer an alternative fitting to past customers.

Yup - I have a 410 in the df95, a 610 in the iom. I had the 410 lying around when I got the 95 - wasn't sure if it would be up to it given the pcb antennae, but never had a problem at LRSC (100-150m range)

I don't see battery voltage making a difference to rf performance- the internals are bound to be regulated to (probably) 3.3v Battery might make a difference if it is better able to deliver the current than a smaller one, but I'd be surprised if a Tx with a 7.4v battery worked any better than (with same power delivery capability) a 5v one.

Two antennae definitely sounds wise - as you say they [dipoles] have a doughnut radiation pattern. I use Spektrum gear. My IOM has an rx with two perpendicular antennae - a decent system will/does use diversity to choose n meld between them. My DF has a very cute rx the size of an eraser -'only' pcb antennae, but I've never had range issues on our lake. Of course, neither hull is carbon...! If there's a way to have external antenna (without water ingress) then I'd def aim for that. But other RG people probably have real world experience/advice

Other than extreme wavelengths, a carbon fibre hull is still going to have significant Faraday Cage effect...

I hope A Fleet doesn't do auto-'correct' 😉

Being a realist, or pessimist - take your pic lol - I think to the things which can and do throw a spanner in the works sometimes. Plain 'finger trouble', a cluster of boats as Darin mentions, a boat fouling after cutting the line and subsequently refinishing. Of course A Fleet allows for corrections, but you gotta at least have pencil n paper handy to jot down what needs correcting? Fortunately it's just sailing, not life n death, tho try telling that to three dozen 'enthusiastic' TT skippers if there's ever a hitch or delay.....😆 All personal/local/club preference of course - people, facilities, budget.