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  1. m899nyc

    Rebuilding small engines for longer life

    @TugboatEng: The bore and crank wore out. There were a lot of metal shavings in the oil. It was an aluminum engine with a liner. I wonder if I had a better liner and custom bearing if I could crack 7,000+ hours. But I don’t know where I could have the parts made.
  2. m899nyc

    Rebuilding small engines for longer life

    Both the vote and crank are wearing.
  3. m899nyc

    Rebuilding small engines for longer life

    Thank you for the replies. The engines are used in generators and outdoor power equipment. I’d like to rebuild this old Briggs. The equipment is well taken care of, not overheated. The Briggs powers a generator. I think 2,000 hours seems a little low - 2 cycle chainsaws will last that long. The...
  4. m899nyc

    Rebuilding small engines for longer life

    They are used in generators and outdoor power equipment. The Briggs, even with an iron liner, wears the bore and crank at around 2,000 hours. Kohler powered gensets and lawn tractors are good for 10,000 hours. All are air cooled, single cylinder, splash lubricated engines.
  5. m899nyc

    Rebuilding small engines for longer life

    I’ve had flathead Kohler and single cylinder Honda engines last around 10,000 hours, but I can’t seem to get more than 1500-2000 of life out of a Briggs and Stratton I/C flathead. Is there anything I can do to increase the longevity of this engine, possibly different rings, or cylinder coating...
  6. m899nyc

    Electroplating cutting edges

    Carbide tipped dividers? You're getting me excited. There are a few companies that make carbide tipped dividers. Maybe brazing on a tip wouldn't be that challenging.
  7. m899nyc

    Electroplating cutting edges

    Platting will deposit at most a few thousandths of an inch of metal. I have seen badly worn cutters repaired by machining back the edge and brazing a new cutting edge to them. This is then ground and honed. It all depends on the size, wear, and why you wouldn't replace the entire cutter. The...
  8. m899nyc

    Electroplating cutting edges

    Can worn cutting edges on steel or iron tools be built back up with electroplating?
  9. m899nyc

    Metal on Metal Contact Movement OK if there is no load?

    @EdStainless Thanks. I made the mistake of loaning a mic out to someone last week and he put a heavy weight oil in it that is causing it to seize up. Trying to figure out what to do. Does the fact that silicone doesn't have a lot of film strength matter, or is the pressure used so light that it...
  10. m899nyc

    Metal on Metal Contact Movement OK if there is no load?

    If that’s the case will a thin silicone lube work? I’m thinking along the lines of silicone watch oil.
  11. m899nyc

    Metal on Metal Contact Movement OK if there is no load?

    I read that some people do not lubricate their micrometers because the screw is "highly finished" and gently adjusting the screw with "no load applied" should not result in wear. Something about that sounds wrong to me, but is it actually wrong?
  12. m899nyc

    Adding rigidity to a sawzall blade

    In the future, I would recommend posting in forum1528: Engineers with Hobbies. Sorry about that.
  13. m899nyc

    Adding rigidity to a sawzall blade

    Rigidity of the blade has little effect on straightness of the cut. That is controlled mainly by position control of the saw. Normally only the tips of the cutting teeth contact the material being cut and the blade will cut in whatever direction it is pushed or guided. A wide blade, like with a...
  14. m899nyc

    Adding rigidity to a sawzall blade

    A friend's brother considered his chain saw a construction tool. His results were pretty good. You know I see stuff like this: http://www.bigfootsaws.com/bigfootproduct/head-cutters/ and I really want to try it, maybe just on some 2x4s but something inside keeps telling me it's a kickpack...
  15. m899nyc

    Adding rigidity to a sawzall blade

    Is there room in the saw's collet/gripping device for two blades side by side? Probably/might have to flatten out or grind the tooth "set" on the mating sides. A couple of tack welds on the blade backs would get the sammich closer to 8X stiffness. Have you tried Milwaukee 48-00-1600 ? Great...
  16. m899nyc

    Adding rigidity to a sawzall blade

    I see what you mean. Before I suggested this, someone suggested that I add a frame around the blade like a coping saw but I don't want to put the increased mass on the blade. I already tried the reciprotools metal file on the blade and the increased mass and intertia makes the saw unusable (and...
  17. m899nyc

    Adding rigidity to a sawzall blade

    Is there any realistic way to add a spine or some other way of making a reciprocating saw blade rigid to provide a straight cut in wood?
  18. m899nyc

    2-stroke engine runinng on turpentine?

    Thank you! When you say wear quickly by today's standards, do you mean immediately or just faster than normally expected? If you run it in, say, a modern chainsaw, would the saw run or would it be destroyed?
  19. m899nyc

    2-stroke engine runinng on turpentine?

    Someone told me you could run 2-stroke outdoor power equipment on straight turpentine and that Honda originaly did the same thing with their original motorbike engines. Is this true? I can't see how turpentine could lubricate and fuel at the same time.
  20. m899nyc

    Wheel Tracks?

    Do you mean it works like a pedrail wheel? https://en.wikipedia.org/wiki/Pedrail_wheel

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