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  1. cadmus

    Stainless 316 Rings 7.5 to 9 inch (19-23cm) Diameter For Tank Holder On Boat - Source Needed

    In an effort to clear up clutter on the deck of my sailboat and move windage low and aft, I am hoping to weld up tank holders and attach them to my stern pulpit (rails) and to the tubes that extend out to the wind vane (Scanmar Monitor) stearing. This tank holder would be a cage made of bent...
  2. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    Thank you for these last 4 posts. I planned to respond to Wookie on April 11th. Work got busy. But i look forward to continuing this conversation and I appreciate everyone's points. I will respond soon.
  3. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    Idler pulley if good for anything that needs to be removed to service the engine and I might install that. But I would like to avoid using one for a clutch on the boat. I may be naive in thinking it engages roughly but i know for sure it makes rubber dust... because that is how my home made...
  4. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    The cost of that Kohler is more than diesel version of the Coltri mch6. But yes, I will keep an eye out for little diesels.
  5. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    I planned to use a bike odometer.... but i like the strobe idea if I can find one.
  6. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    Clarification if you will kind sir: 10hp yanmar was powering the compressor only, right? not the prop and the compressor? and what was the compressor model/size/brand? Do you recall the brand and model of your electromagnetic pulley clutches and how long lived were they in marine environment.
  7. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    The compressor is dinky. A Bauer Varius. I am told it has a wider range of RPM than most but the best feature is the really small size. I doubt it needs more than 2hp even at startup. Not sure how to determine for sure (EDIT: Planned to examine amp draw when powered by the existing electrical...
  8. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    Thanks for this response. My sailboat is small. Nor'Sea27. 10,000lbs +/-1500. My entire fuel tank is 30 gallons plus two 5 gallon jerrys. My steering is powered with a wooden tiller attached to a barndoor of a rudder. My bowthruster is a long oar. (i hope that was taken as funny) I was...
  9. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    GREAT POST. Thanks. I saw those on many fishing boats but never owned one. And yes.... i noticed the high cost. It is a cone clutch. What else has that mechanism?
  10. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    I noted his post on April 2 2022 and it concurs with what most owners of large motorboats and dive boats do especially those filling tanks each day. He is filling "1500 tanks per year avg". I tried to find his F/V AuntT to see how big she is, maybe he will pop up here. Regardless of vessel size...
  11. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    Thanks Tbone1004.... and acknowledged for sure... It is a low RPM diesel for a slow heavy displacement full keeler sailing vessel which in general does not like variable throttle either and it has a really small range of RPM. But indeed, I agree. And I will design it such that my warm up RPM...
  12. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    I should have added that: 1- I am looking for a mechanical clutch, not an electromagnetic clutch. 2- I want all controls to me mechanical and manual, nothing electronic. Ideally just a lever on the clutch. But I am still open to any suggestions, I just try to keep everything simple and...
  13. cadmus

    Mechanical Clutch Needed To Engage Belt - Powering Compressor Off Boat Motor

    I am looking to power an old Bauer compressor off the front end of a small diesel boat engine. Engine is ~25hp. Rarely is that all needed to propel the boat and often the boat is idling, warming or cooling… perfect time to be filling tanks. I am hoping to find a mechanical clutch system that...
  14. cadmus

    Inspecting a used Coltri - What to look for?

    Thanks for the help on this. I opted to not bite. I saw metallic spray-paint on locations that likely need to stay bare for thermal transfer reasons. It had a different filter on it; was used by a fire department not for SCUBA. No way to test pressure or fill time. Even at $500 it was...
  15. cadmus

    Inspecting a used Coltri - What to look for?

    Hello, I will be inspecting a used Coltri for sale localy. It looks like a MCH6 from the photos. I can not see a model number or year. It is younger than the internet because the label says only "COLTRI AMERICAS www.coltriamericas.com HIGH PRESSURE AIR COMPRESSOR SYSTEM" What are key things...
  16. cadmus

    Larger, Wider, More Open Jaw Mouthpiece Needed - any suggestions?

    I’m at wits end here, thanks in advance for the help. I am in need of larger & wider mouthpieces for both snorkels and regulators. Preferably ones that hold the mouth in a more natural half open position to avoid breathing through my teeth which will allow me to give a strong snorkel clearing...
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