Adapter between mounting systems
An adapter between Scotty, Railblaza and track, plus a clamp foot drawn to the gunwale of your own boat.
The problem
You own a holder from one system and a base from another, and the boat has no track at all. The adapters barely exist, and the ones that do cost more than the holder they are meant to join.
The fix
The adapter plate is drawn to the bolt pattern on both sides and printed in ASA-CF, stiffer than plain ASA and less prone to shrinking. The slot the holder slides into gets 0.2 mm of clearance a side: more and it rattles, less and it will not go in once the plastic has picked up a little moisture. Every bolt is A4 stainless, with a nylon washer between dissimilar metals, and there is no brass in any part that lives outside.
The clamp foot is the interesting half. A Pioner or an Askeladden has its own gunwale profile, and a clamp cut to that exact section sits without twisting. I draw it from photographs with a scale in shot and a paper template of the cross-section. The prototype hangs with 8 kg on it for an hour to see whether the plastic creeps. The parts fit the systems named here. They are not made by them, and they carry nobody else's mark.
The creep test on the bench is not a stated working load. These parts are not intended for downriggers, towing, lifting or other dynamic loads, and must not be used where a failure has safety consequences.
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