I just removed the transducer and used a sawzall to sawed through the plastic, 180 degrees apart and drove a screwdriver to peel away the housing. 5200 is no match for that. It sticks to fiberglass great, plastic not so much. And yeah, you will most likely be into solid fiberglass, but be sure.
Bill Coleman Erie PA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Joel Aronson via CnC-List Sent: Wednesday, October 30, 2019 9:30 AM To: cnc-list Cc: Joel Aronson Subject: Re: Stus-List Advice on replacing 33-2 BandG 32mm transducer with Airmar 52mm transducer De-Bond will dissolve 5200 (so will gasoline, but don't pour it in the bilge). West and other places sell it. If you have to re-drill, pound in a wooden emergency plug so the center bit has something to bite into. Joel On Wed, Oct 30, 2019 at 9:23 AM Josh Muckley via CnC-List <cnc-list@cnc-list.com> wrote: As I understand it, that location forward of the keel was expected by the designers to be the location for the speed and depth transducers. As such the hull is solid in that location. If you drill it out and find otherwise then a typical removing of the core while leaving the inner and outer skins in place would be appropriate. Dig the core back as far as possible. With a 52mm hole, angling a drill bit and other various implements should be pretty easy. Back fill the cavity with thickened epoxy, allow to cure, and redrill the 52mm hole as needed. Install the transducer with 5200. You will most likely find that the original was bedded with 5200 and will not come free. There are products available that are supposed to loosen/weaken 5200. Try them first but it may still take days of soaking. If that fails then a sanding drum on a drill can make pretty short work of the plastic and 5200. For the new hole, a hole saw typically needs the drill bit to center and stabilize the drum but with a 32mm hole already there it can be difficult. Create a stabilizing core by getting a hole saw that fits the existing hole (either in the hull or in the existing transducer fitting) and drill a plug from a 2x4. Now change the saw to your 52mm and slide the wood plug over the drill bit. The plug will act as a centering guide as you drill the new hole. Depending on the size of the old fittings this may be sufficient and pre-removal may be unnecessary. I find biological growth to fowl my speedwheel constantly during the summer months. I'm frequently removing the speedwheel with the boat in the water resulting in a small geyser. To avoid this I am seriously considering an ultrasonic speed sensor. Have you considered this yourself? I would like even more if I could find one that was able to be glued to the inner hull and simply shoot through. I know some depth transducers are made this way but speed is a different story. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Wed, Oct 30, 2019, 8:55 AM Doug Welch via CnC-List <cnc-list@cnc-list.com> wrote: It's time to replace the B and G Network Quad instruments on my 33-2. This means replacing the old 32 mm paddle wheel speed transducer with a 52 mm airmar transducer. I understand that the 33-2 is partially cored hull, so my question is the area where the transducers are currently located cored. They are located in the locker at the foot of the vberth. Any other advice on removing the old and installing the new is gratefully received. I went with a Garmin Echomap plus cv75 and sonar,depth, temperature transducer. Cheers, Doug Welch Celtic Knot 33-2 c/b _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray -- Joel 301 541 8551
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
