Speed Tranducer O-Ring Sizes

[George Bean]

Does anyone know the size of the O-rings on the Raymarine ST60 speed transducer "bung"?  My O-rings somehow came off and I have nothing to measure.  I am also thinking about replacing the larger diameter ring that is higher up on both the bung and transducer. From my internet search, I only found a paddlewheel rebuild kit from Binnacle.com ($36.95)

On a related note:  On the MkII boats, is there supposed to be a weep hole from under the v-berth to the bilge?  Normally this is not a problem as it is easy to sponge up water leftover from swapping the transducer.  But now, with my O-ring problem, the water is in danger of flowing over the cabin sole on its way to the bilge.

[Jack Hutteball]

My 2001 does have limber hole that allows water from under the forward berth to drain to the bilge.

Jack

[Jim Hardesty]

My 2001 MKll also has limber holes.  When I first got Shamrock many of the limber holes were pluged with wood chips, small bitts of fiberglass, ect.  Took a couple of cleanings for them to stay clear.  Don't know the O-ring size.  If it wasn't lost, there should have been a plug for the knot meter.  It will have an O-ring and and the threaded locking ring.  Plan #2 (if you have or can borrow a set of calipers) measure the hole inside diameter and the outside diameter of the O-ring groove.  A good hardware store, chandlery, or industrial supply will be able to size it for you.  I'd be surprised if it was more than 1$.
Hope this helps,
Jim

[Stu Jackson]

Jim's right, very good advice.  You can most likely source the O rings at ACE Hardware, really.  Our local one has a great assortment.  No need to go online.  Get a "feel" for it's size with the calipers and maybe a few photographs, next to keys or spare change and ruler, and you could buy the right one by a few that "seems" smaller or larger.  The right one will be in the middle.  Return the ones you don't use, they'll take 'em back. Good luck.

[George Bean]

Thanks for the pointers.  This weekend I will go to Pagano's on Lincoln and visit their "hall of fasteners".  (If you don't hear from me by Tuesday, send out a search party ).  On the MkII boats, What is the diameter of the limber hole between the v-berth and first bilge compartment?  Stu, will you be at your boat this weekend?  I'd like to pick your brain on a couple of items.  Perhaps we can meet at EYC Saturday afternoon and I can buy you a beer?  The Master Mariners will be in so there will be lots of wooden boats at the docks.

[Stu Jackson]

Paganos is the place to go, back in the plumbing dept.

I sent you an email (lmco still valid?).