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  1. dingbat

    Tahoe Live-well question

    Intake is below the water line. Guessing one is over flow the other is the drain
  2. dingbat

    Big twin 40hp shear pin material?

    It could be marine bronze. Brass has dissimilar metals issues. Avg. Bronze shear is 35,000 psi Could be carbon steel with gold iridite finish Is the old one magnetic? Keep in mind that a solid, 1/4” round has a cross section of 0.049 square inches.
  3. dingbat

    Mercury Pro XS to MercMonitor Level 1 to Lowrance?

    https://www.yumpu.com/en/document/read/50854018/mercury-r-engine-connection-for-nmea-2000-lowrance
  4. dingbat

    Fuel Line Drained the tank

    Attwood fuel lines are a known source of problems. I would buy some A1 marine fuel hose and an OEM Primer bulb and make your own hose assembly
  5. dingbat

    Big twin 40hp shear pin material?

    Shear
  6. dingbat

    Big twin 40hp shear pin material?

    Aluminum 12,000 - 18,000 psi Red Brass 35,000 psi 304 stainless 75,000 psi Low carbon HRS 50,000 psi
  7. dingbat

    Too close for comfort!

    “Their immense bulk makes right whales significantly heavier than other whales of similar or greater length such as the humpback, gray, sperm and even fin whales. In fact, right whales rank only behind the blue whale in sheer body mass.” https://en.m.wikipedia.org/wiki/Right_whale
  8. dingbat

    Mercury Pro XS to MercMonitor Level 1 to Lowrance?

    The NMEA 2000 backbone carries the power
  9. dingbat

    Bearing buddy O-rings - is there a size chart anywhere?

    https://www.applerubber.com/src/pdf/as568-standard-size-o-rings.pdf
  10. dingbat

    Where to mount my transducer?

    No… the tip of the blade. Assuming your running a 13-14” diameter prop….14/2= 7 +16” = 23” from centerline of boat If you can’t do that, mount it at a location where you can and live with the results. If your not far enough away one side of side scan will have issues. Expect to make many...
  11. dingbat

    Wayyyy over propped???

    Comments on this paper? If you adjust for the specific heat to your 14.5 atmospheric pressure you end up with 20.3 x 9.5:1 give you a compression of 192 psi http://www.healey6.com/Technical/Nominal%20compression%20pressure.pdf
  12. dingbat

    Old to new-ish Johnson repower questions.

    ….
  13. dingbat

    Does ACR exist to charge start battery bank only if the volts drop below 12.45?

    and never will. What your saying makes no sense given how an automotive/marine charging systems works. See image below The voltage regulator regulates the voltage coming from the charging system. The ACR simply distributes the charge between the two batteries The only way you can over...
  14. dingbat

    Where to mount my transducer?

    Take 1/2 the diameter of your prop and add 15”+ 1” . This is the distance from the center line of the boat to the center line of the transducer. Old paint, as well as anything else on the bottom, creates turbulence as the water flows over the bottom of the boat. That turbulence will interfere...
  15. dingbat

    Does ACR exist to charge start battery bank only if the volts drop below 12.45?

    Regulation of the charge source is handled by the voltage regulator. Has nothing to do with the ACR
  16. dingbat

    Where to mount my transducer?

    Not sure how you came to that conclusion from my comments above. Also pay attention to my comments about bottom paint
  17. dingbat

    Wayyyy over propped???

    Nobody can give you a definitive answer unless they have the exact same boat motor combination. The max rpm for that motor is 6300. Your currently running 1400 rpm below with ~ 40% slip. Anything would be better at this point The performance specification I posted above used a 13-1/2 x 15 prop...
  18. dingbat

    Wayyyy over propped???

    I have no clue but I found a number of sources which list the range of a 4 stroke Yamaha as 180-210 PSI
  19. dingbat

    Wayyyy over propped???

    https://yamahaoutboards.com/en-us/home/outboards/115-50-hp/f115/f115/pb_wlc_182fisherman_f115xb_2017-05-17_occ
  20. dingbat

    Where to mount my transducer?

    I had the opposite problem when installing a GT51-M-TM The side viewing feature puts pretty restrictive demands on location and orientation of the transducer relative to the lower unit since the side beam has to pass between the transom and the lower leg. In my case, I had to move my...
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