I really don’t want to start a thread as such on this subject but given the experience levels of the membership of the forum want to take advantage of any knowledge available.
I am part way through the installation of a Lowrance HDS 7 Gen 2 with LSS-2 side scan is there any one out there with experience a similar setup, I need to get some advice/ideas on the practicalities of transducer placement etc.
I’m not really familiar with the Side Scan setup but I can tell you that of the many different types of boats I have been in none of the transducer setups have been perfect and I’m not even sure if its even possible. The most important thing is to make sure you a clean stream of water going over your transducer as much as you can. Mount it as close to the keel of the boat as you can without getting affected by any air bubbles or risking interference from the motor. Unfortunately it is pretty much trial and error in this regard. Mine is mounted roughly 20cm to the right of the motor but still gets air bubbles going over it once I come off the plane which clutters the screen for 30 seconds or so.
The real issue with the installation is the size of the S/S transducer, at approx 250mm long it is longer than the distance between the transom face and the motor leg so it looks as if shadowing may be an issue with respect to its performance on one side.
The lesson here is not to be blinded by the potential savings available and forge ahead thinking you will make it work. I got the set up for something like $700 off RRP I should have done a bit more research and perhaps gone for a Humminbird unit with similar capabilities that has a more conventional sized transducer funnily enough it would have been about the same price as the discounted Lowrance setup.
I hope that there may be a member that has done an LSS-2 install they are happy with and can give me some pointers.
The manuals supplied are not that good and on reflection if had spent the time to have downloaded them before buying the unit I may have realised that its operability may have been compromised by the boats design. They really seem suited to a boat that has a motor on a pod or similar arrangement. I am seriously considering an underhull mount and using a wedge to get the TX parallel to the waterline to compensate for the trim by the stern with the boat at low speed.
The only advice received from Lowrance was as the LSS-2 unit is only suitable for use at low speeds (>10 kph) transom mount it and trim the motor up out the way when using the SS and DS functions. I can see where that is going – new trim/tilt unit due to excessive use at some stage.
It looks like the under hull may be the way to go. You could always just transom mount it and do an on water test to see if the motor blocks any signal but im guessing the exhaust will disturb the signal alot.