Recently, I became a bit adventerous and started carrying more sail in more wind. That's when the Admiral and I noticed a rumbling kind of noise in winds exceeding 7kts. The noise is only present when carrying 180% genoa and appears to be coming from the standing rigginf; more precisely rigging vibration transferred to the hull (its definitely NOT my keel or keel cable). Quetion: should I worry and carry less sail?
Rumbling/throbbing sound when carrying Genoa 180 in 7kts+
- Thread starter Piotr
- Start date
Holy mackerel, 180%! Must be a hank-on.
I'm trying to imagine where you'd lead the sheets.
Back to the transom, maybe?
Sure, sail it. Just mind the wind, eh?
I'm trying to imagine where you'd lead the sheets.
Back to the transom, maybe?
Sure, sail it. Just mind the wind, eh?
Not really in terms of point of sail, but it is more pronounced when heading up. As to the other question - say what????
well, 7 kts with that deck sweeper (aka "the Whomper") is pretty much the max. The sheets are set up the same way as for any other genoa (outside the stays and lifelines to the cockpit). It's just in anything above 5 kts we need the winch handle to trim it...Holy mackerel, 180%! Must be a hank-on.
I'm trying to imagine where you'd lead the sheets.
Back to the transom, maybe?
Sure, sail it. Just mind the wind, eh?
Re: Rumbling/throbbing sound when carrying Genoa 180 in 7kts
As to THECUSCUS' other question, he's asking "how tight are your shrouds and stays?".
As to THECUSCUS' other question, he's asking "how tight are your shrouds and stays?".
Re: Rumbling/throbbing sound when carrying Genoa 180 in 7kts
I would take heed to what THECUSCUS & PIOTR said.
Yea, I would also look @ rigging tension. When I get the "Pump" for me, I find that's kinda kool. But, my rigging is tuned, is yours?
ps: A 180 head, that's a little heavy for your size/weight boat.
CR
I would take heed to what THECUSCUS & PIOTR said.
Yea, I would also look @ rigging tension. When I get the "Pump" for me, I find that's kinda kool. But, my rigging is tuned, is yours?
ps: A 180 head, that's a little heavy for your size/weight boat.
CR
180 is estimated, but the sail dimentions coincide with the 180's dimentions , so it must be close.
Yes, I know. Buit I don't know the numbers. I loosened out the backstay recently, and the shrouds are tensioned evenly, withj the leeward shrouds going slack, so i assume we are ok. So far.
I would buy or borrow a Loos gauge for tension, and make sure you have them tuned to specs. It sounds like mast pumping from too slack rigging. The jib may be telling you "I want to spend money!"
Seriously, the way you describe it sounds as though you do not know the specs. I have yet to meet someone who carried a rig that was too tight. It can be bad also, so don't just tighten them...
Also, check below and make sure there are not any gaps between all the supporting members to the hull (and not just the deck).
Lastly, that big a jib puts out a lot of lateral pressure. Do you have a lot of pressure on the tiller? A 180 can't be sheeted in enough to point well in my experience, so you may be hearing/feeling keel turbulence.
Jeff
Seriously, the way you describe it sounds as though you do not know the specs. I have yet to meet someone who carried a rig that was too tight. It can be bad also, so don't just tighten them...
Also, check below and make sure there are not any gaps between all the supporting members to the hull (and not just the deck).
Lastly, that big a jib puts out a lot of lateral pressure. Do you have a lot of pressure on the tiller? A 180 can't be sheeted in enough to point well in my experience, so you may be hearing/feeling keel turbulence.
Jeff
Leech line is adjusted , there are no loose fittings, spaces, etc. One of the former owners of Mac 25 in my marina told me that it means the boat has achieved the hull speed and is trying to plane , i.e. it is pushing more and more water under the bow. I'll check the specs and see what I've got for the rigging tension at some point...
Re: Rumbling/throbbing sound when carrying Genoa 180 in 7kts
By the way, since there are specs for 180% for Mac, the boat is obviously designed to carry one (and a spinnaker). So I don't think I'm overloading anything.
By the way, since there are specs for 180% for Mac, the boat is obviously designed to carry one (and a spinnaker). So I don't think I'm overloading anything.
Re: Rumbling/throbbing sound when carrying Genoa 180 in 7kts
Rumbling and throbbing while flying a 180 in 7+ knots ...
Are you sure it's the boat, and not your loins??
Rumbling and throbbing while flying a 180 in 7+ knots ...
Are you sure it's the boat, and not your loins??
Yes, I'm sure. The rumbling from my loins is usually masked by screaming of my brain:" What the F#@%* are you doing???" Or it could be the Admiral - it's hard to tell...