Humming C-22

[Jim Hanebury]

I have noticed a very audible humming coming from my rigging, the lower shrouds I beleive, when I am close hauled on either the port or starboard tack. Nostly on the port tack though. THe lee lower shroud is loose when this occours. Anything I shold be concerned with. Is the rigging tunes right? The back stay tends to be loos when I haul in on the main sheet. Any suggestions/comments would be appreicated.Jim HaneburyC-22 "Laura B"Toms River NJ

 

[K2]

rigging or keel cable?

Jim, This may be a dumb question. Do you have a swing keel? Are you sure the humming is coming from the rigging and not the keel cable?My keel cable humms loadly if it is not completely loose and my boat gets up some speed (usually upwind)Let us know what you find out.K2

 

[Barry Broyles]

Keel Cable

Jim: Like K2 said, swing keel Catalina 22's are famous for the "Humming" sound you describe. Mine does it all the time and I just crank out a little more slack in the cable and it usually stops.Barry Broyles C22 # 1909 "Brighteyes"

 

[MJ]

Rigging

Jim:I am not an expert, but I would be concerned about your slack back stay. I am a do-it-yourself kind of guy, but I recommend hiring a rigging shop to tune your rig correctly. You can then mark the turnbuckles so you can get close to the same tune if you ever lower the mast. A properly tuned rig is a safety issue and it will also improve your boat's performance.

 

[Robert]

Rigging

MJ is correct in that proper tuning of the rigging is a safety issue as well as a performance issue. I disagree, however, that you need to have a rigging expert tune your rigging for you. It is a simple task that just takes a little time and patience. You can purchase a Lews Shroud and Tension guage (be sure to get the right one for the diameter of your cable) which allows you to properly set the tension on each cable. The Lews kit also contains a chart showing the proper tensions for all of the shrouds, the forestay, and the backstay. These settings are a good base setting and can be adjusted to meet your sailing needs. Good luck!

 

[Michael]

Hummer

Jim;You definitly need to adjust your rigging. The backstay needs to be some what tight when sailing on a beat. Quite possibly the shrouds are out of adjustment also. They should be the same side to side (port aft, and starboard aft) the forward lowers should also be the same but not neccessarily the same as the aft lowers. The uppers ned to be tight enough to keep the mast straight while sailing. If the top of the mast leans off to leward, tighten the uppers. The lowers should keep the center of the mast in line with the top. The back stay can be changed from tight for upwind to loose for downwind. The tension guage is spelled 'Loos'. They make two inexpensive models, and one rather expensive one. The difference between the cheaper ones is the size of the rigging they measure. Get the one that fits the smallest sizes. The hum is probably coming from the keel cable.Mike

 

[Jim Hanebury]

C-22 Humming

Thanks All for the information. I already have the Lews Gauge, just forgot about it. It is the smaller one. I believe I goofed up the tension when I had to replace the Aft Shrouds earlier this year. Nice to know that the Humming is just the Keel cable. It is kind of a comforting sound for me. Thanks again for the advice and knowledgeJim Hanbeuryu C-22 " Laura B"