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  1. SabreToothedEngineer

    Simrad WP30 Autopilot Drinking on the Job

    I know a lot more about this kind of belt than I did a few days ago... You were correct, Richard, that it's not a chandlery item. It's not even a Simrad item; they don't sell them themselves. It's listed many places online, but not stock anywhere that I could find. I finally found a place that...
  2. SabreToothedEngineer

    Simrad WP30 Autopilot Drinking on the Job

    Thanks for all the help, everyone. I think the belt tension is going to be the answer. During the last two days I noticed (1) that when the clutch was engaged with modest effort I can still turn the wheel [which didn't used to be possible] and (2) when engaged and on, I can sometimes hear the...
  3. SabreToothedEngineer

    Simrad WP30 Autopilot Drinking on the Job

    I have the manual, but there is nothing that I can see about swinging the compass; the only options seem to be gain and sea state. I'll read it again more carefully, though. There is also (this seems weird to me) no option to adjust the belt tension; in fact, opening it up to inspect/change the...
  4. SabreToothedEngineer

    Simrad WP30 Autopilot Drinking on the Job

    The Simrad WP30 Autopilot on my Hunter 34 has recently decided to start wandering aimlessly. Sometimes it will be fine, then suddenly it will turn one way or the other by as much as 45°. Sometimes it will wander back and forth; sometimes it will simply decide it wants to keep on a new course of...
  5. SabreToothedEngineer

    Yanmar 3GMF engine transmission information wanted

    I have an '83 H34 with the 3GMF engine and the Kanzaki KBW10 transmission (just to give you the model that goes with the 3GMF). The reason for posting, though, is that we had a strong vibration at all but low speed that was getting worse as time passed. We suspected - and investigated - all...
  6. SabreToothedEngineer

    Adding an electric fuel lift pump on older Hunter's with Yanmar diesels,

    Some four or five years ago I was having a terrible time starting the Yanmar 3GMF in my '83 H34. The local Yanmar mechanic diagnosed a worn out fuel pump and recommended adding an electric pump after the primary fuel filter. We (the mechanic and I) couldn't get anything out of the mechanical...
  7. SabreToothedEngineer

    Old propane tank

    I just finished the exercise of updating the entire propane system on my '83 H34. The original "system" consisted of a bottle tied to a U-bolt in the lazarette, a pigtail to a regulator with no gauge, and a line from there to the stove. Everything exposed was rusted and/or deteriorated. We never...
  8. SabreToothedEngineer

    H-34 Manual Fuel Check

    Thanks for that. The only complication is that there is no existing sensor; hence the project to install one. I was a little concerned about drilling a hole in a tank full of diesel, but after a bunch of reading I've concluded that it can be done perfectly safely.
  9. SabreToothedEngineer

    H-34 Manual Fuel Check

    Hi Claude, Do you remember what length sensor you bought?
  10. SabreToothedEngineer

    1983 H34 Main AC Circuit Breaker Replacement

    Thanks, guys. The original panel was made by Bass Products out of Marblehead, MA. The model number on it was 96-H34/36/37. Surprisingly, they're still in business and while they no longer carry the original Airpax one (I found the exact model number - IPA-66-1-30.0-01; very similar to what...
  11. SabreToothedEngineer

    1983 H34 Main AC Circuit Breaker Replacement

    I want to replace the main AC circuit breaker in my early vintage ('83) Hunter 34. The existing one occasionally breaks the circuit (Note: it doesn't trip, it simply stops transmitting power). I can usually toggle it back and forth a couple of times and it will come back. Once I had to unplug...
  12. SabreToothedEngineer

    H34 Compression Post One More Time

    I think the reasons we haven't heard of anyone who has used a floor jack are first, that it's steel, not stainless or aluminum, and will therefore be difficult to maintain if it tends to get wet, and sooner or later will have to be replaced. Second, anything that's adjustable will slip in the...
  13. SabreToothedEngineer

    H34 Compression Post One More Time

    I wrote up what I did in the hopes that it will help some others in the same way that the write-ups by several others helped me. I'll also send the drawing I made to anyone interested.
  14. SabreToothedEngineer

    Yanmar 3GMF Hard Starting - Air, Oil, or Fuel Pump?

    I was just looking over old threads and realized I never closed the loop on this one. The answer was the fuel pump. The original mechanical pump was shot. My Yanmar mechanic said it was far easier and more effective to add an electric fuel pump than to replace the existing mechanical one, so I...
  15. SabreToothedEngineer

    Bomar Hatch Gasket Material

    My '83 Hunter 34 has four Bomar hatches, and all the gasket material is in tough shape. I was going to replace it with the original thing, but the price stunned me. This is nothing more than 1/2"Ø rubber with an adhesive strip on it. Is there anything else out there that will do the job and not...
  16. SabreToothedEngineer

    H34 Compression Post One More Time

    Just to close the loop, air dried and kiln dried are essentially the same thing. In either case, it's considered to be 10% moisture (compared to 50% moisture for green wood). The only difference is time; air dried is literally that, left to its own devices to dry, versus kiln dried where you...
  17. SabreToothedEngineer

    H34 Compression Post One More Time

    Seeing there is some interest, I will certainly post some pictures when I get a chance. I'm in between work trips (home for one day) so I don't have time to do it now, but I'll try to get to it next weekend when I get home. I can also send anyone interested the actual fabrication drawing I made...
  18. SabreToothedEngineer

    H34 Compression Post One More Time

    Sorry, I've been travelling and didn't see this earlier. Thanks for your kind comments, and for inspiring me to double check the numbers. I originally just used an old reference I had, "Engineering Materials and Their Applications" by Flinn and Trojan. That says 3600 in the grain direction and...
  19. SabreToothedEngineer

    H34 Compression Post One More Time

    For anyone interested in this topic, I did the compression post repair on my H34 over the winter. I did nearly exactly the same thing dcalif did (2x2x0.25 aluminum square tube with a honking big header block at the top), with one major difference compared to what anyone else has done as far (as...
  20. SabreToothedEngineer

    1984 Hunter 34 issue with interior floor frame

    I was going to reply to Capt. Robbie's post, but Will already did. One clarification and another comment: ☼ The coefficient of thermal expansion is a number times 10^-6 (not 10.6), meaning 10 to the power of -6, and can be given as per °C or °F (or even K). The length units don't matter because...