|Humminbird TCR ID-1 Transducer|
The fishfinder sensor/transducer of my recently purchased RL24 has had its pivot eyes broken off and there is no bracket for transom/hull attachment. The sensor is located in the stern, adjacent to the outboard well, and just flops around unattached - quite useless at present however the sensor still works.
I've also discovered a second sensor in the bow area underneath the toilet. It was simply attached by a bracket to a wooden support with the sensor sitting on the bare fibreglass hull.
Garry (02/12/2001) used silicon to fix his transducer to the hull. This has the advantage of being able to move the sensor to a better area if necessary. This seems to be the solution for my stern sensor. However the Humminbird manual recommends using epoxy (permanent) and cautions against using silicon or soft adhesives as they will reduce sensitivity.
Keith Merkley (12/08/2001)recommended inserting the sensor into PVC pipe, gluing it to the hull, filling it with caster oil and capping the pipe. This would seem to be the solution for my bow sensor. But why caster oil ($50 per litre)? Why not water (free) or vegetable oil (a couple of dollars)?
Could Keith or Garry or anyone else comment further on the use of silicon and sensitivity and the reason caster oil is used rather than other fluids?
RL 24 No 64 'Good Feelings'