Thanks for that Dave. I might start with petroleum jelly and duct tape, or a weight, to see if I can get any readings initially. The install instructions from HawkEye mention using petroleum jelly to find the initial position of the transducer on the hull. I understand the comments about bubbles. Regards, Rob On Mon, Jun 22, 2020 at 3:14 PM Dave Scobie <scoobscobie@gmail.com> wrote:
Rob:
I've installed a couple dozen of these and in each case used silicone instead of slow cure epoxy. the bonus is if there is a problem with the transducer it doesn't take a jackhammer to get the unit out.
I suggest you clean the area where the current transducer was attached and use silicone to re-mount and see if the unit will work. the trick is not to have any bubbles in the silicone (and the epoxy). after placing leave the boat at let it sit for a couple or more days - no sailing! if reattaching the transducer doesn't work either it is dead or the placement is in a location that has a void or other 'contaminant' that interferes with the signals.
to clarify all of Jerry's designs have no core in the starboard nor port sides of the hull. the only section of the hull with core is the transom. most of the horizontal portions of the deck and cockpit have balsa core. some of the older M17s also have a thin plywood core on the cabin wall port and starboard of the companionway.
:: Dave Scobie :: SV SWALLOW - https://sv-swallow.com :: Montgomery 6'8" #650 :: Truck camper - https://truckpopupcamper.wordpress.com/ :: Ramblings - https://scoobsramblings.wordpress.com/ :: former M17 owner #375 SWEET PEA - https://m17-375.com/ <http://www.m17-375.webs.com/> :: former M15 owner #288 - http://www.freewebs.com/m15-name-scred
On Fri, Jun 19, 2020 at 1:48 PM Rob Bultman <rob.bultman@gmail.com> wrote:
My 1977 M17 has a HawkEye depth finder installed by a previous owner. I'm not sure what exact model is installed, but it appears to be similar to the DepthTrax 2B currently shown on their website (
https://hawkeyeelectronics.com/collections/sailing/products/depthtrax-2b-boa...
). The transducer is "glued" to the hull in the v-berth area. I finally got the boat out this weekend for my initial shake-down sail but the depth finder just showed 0 depth. The previous owner did not mention any issues with it.
The info on that page states: Glue-In Installation is for NON-CORED hulls or aluminum hulls thinner than 1/8” ONLY. Glue-in mounting of the transducer is NOT suitable for all vessels.
Does the M17 have a cored hull or should this finder just work?
Thanks, Rob