The Saw! Part one of the Rapidor Manchester Sawing Machine rebuild

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  • เผยแพร่เมื่อ 28 ธ.ค. 2024

ความคิดเห็น • 27

  • @cainbeeping8480
    @cainbeeping8480 หลายเดือนก่อน +1

    Here

  • @paulhewitt1488
    @paulhewitt1488 หลายเดือนก่อน +1

    Terrific video Dean , it’s really nice that Carl and yourself appreciate the guidance and passion your grandad imparted. Well done , take care 👍👍

  • @montana2strokeracer
    @montana2strokeracer หลายเดือนก่อน +1

    Hey Dean, I sure dig old tools, this saw is going to be cool and functional, enjoying your progress. Thanks, buddy, for the kind words, I do feel much better and am slowly getting back in the shop.

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@montana2strokeracer thanks Dale, I'm looking forward to getting this thing done. I'm planning a workshop revamp over the winter. Best wishes, Dean.

  • @matthewhibbs9602
    @matthewhibbs9602 หลายเดือนก่อน +1

    not dry at all. Keep em coming

  • @cainbeeping8480
    @cainbeeping8480 หลายเดือนก่อน +1

    A cool project.

  • @InTheShedUK
    @InTheShedUK หลายเดือนก่อน +1

    Good to see your starting to tackle 'The Beast'.

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@InTheShedUK too late for regrets now Ian..thanks for watching!

  • @MrFactotum
    @MrFactotum หลายเดือนก่อน +1

    nice bit of striptease Dean😄😄😄😄👍👍👍👍
    its going to make a great saw, can't beat the old Donkey saw
    I have that problem not just at an intro usally most of the time, dead from neck up🤣🤣🤣🤣🤣🤣👍👍👍👍
    see you next time
    atb
    Kev

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน +1

      @@MrFactotum thanks Kev, I'm looking forward to using it.

  • @petermckee1061
    @petermckee1061 หลายเดือนก่อน +1

    Wonderful project Dean. I'm looking forward to progress on this.
    I still have a collection of Whitworth sockets and spanners from the days when I had my BSA A65L and Triumph 6T. I think my MGA still had a few BSW threads here and there.
    Cheers, Peter.

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@petermckee1061 thanks Peter, I'm looking forward to seeing it run properly. Best wishes, Dean.

  • @philhermetic
    @philhermetic หลายเดือนก่อน +1

    Cracking stuff Dean, its virtually the same as Pauls at Haxby shed, watching with interest!
    Phil

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@philhermetic thanks, Phil. It's in remarkably good condition all things considered. They made them well.

  • @OzBSABantams
    @OzBSABantams หลายเดือนก่อน +1

    Great work mate.........Always a challenge pulling something apart you've never touched before. I thought some of the threads would be BSF but they looked whitworth. Well worth getting a coat of hammer tone green onto it.........I think it will come up really good. It's also a very handy thing to have in the workshop as well. Looking forward to the next instalment.......

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@OzBSABantams thanks mate, it was a learning curve but that's a good thing. Cleaning it up, it's in really good condition. Shouldn't be too long before we are putting it back together.
      Best wishes, Dean.

  • @carlwilson1772
    @carlwilson1772 หลายเดือนก่อน +1

    Brilliant film and not at all dry. Great to see you dismantling the saw. Good to see Grandads tools in use. I think you could make a new bush from black acetal if the bronze is too dear.

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@carlwilson1772 thanks very much. I couldn't do the job without Grandad's tools. Such good quality. I have my eye on a bit of bronze but the Acetal option could definitely work.

    • @boblawson1006
      @boblawson1006 หลายเดือนก่อน +1

      There is the possibility that there's an off the shelf bushing somewhere that will do... It's usually cheaper to find one than make one.
      And, as Dibnah found out, touring with his traction engine... Bushes made from an unsatisfactory material can let you down. He had one fail in Scotland, IIRC (made from a piece of brass he had lying around) Even SKF, better known for antifriction ball, roller, etc, bearings supply plain bushings...

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @boblawson1006 I will certainly check Bob.

  • @boblawson1006
    @boblawson1006 หลายเดือนก่อน +1

    Some things many users of these saws don't know ( in my experience)
    1) The blade cuts on the forward stroke, so point the teeth forward (contrary to Wicksteed saw practice)
    2) The way the motor runs is crucial. Viewed from the pulley side, the motor runs clockwise.
    3) keeping the dashpot filled with appropriate oil, and setting the damper adjustment correctly affects cutting efficiency and blade economy. (assumes the damper components are still OK, after decades in use...)
    The reasons? 1) Put the blade in backwards, the pressure on the forward stroke is on the back of the teeth. Those square guides are angled the way they are for a reason... downward, relative to the material being cut...
    2) with the pulley running in the direction described, the crankpin is "pushing" the saw bow downward on the cutting stroke, just like manual sawing.
    3) the damper piston is rising a little in the dashpot on the forward stroke, and preventing, if set right, the saw blade remaining in contact with the material being cut, or at least minimizing the pressure on the blade on the return stroke.
    4) fit the blade the wrong way round, cutting on the return stroke, and with the motor direction reversed, the crank's tending to lift the saw bow up when the blade's cutting...
    Somewhere, I have half a dozen machine hacksaw blades in the garage. 12" x 1" , I think... (possibly 14" ) they can be so useful for scraping, deburring, etc. (or opening up your wooden kitchen knife block for a new, broader bladed knife than previously occupied that space... )
    Wicksteed saws cut on the return stroke... Experience taught me that whatever saw there is in the shop, you'll find the blade installed wrongly at some time... Wicksteed people put Rapidor blades in wrongly, and vice versa... Q&S I've used so seldom, I just cannot remember...

    • @retromechanicalengineer
      @retromechanicalengineer  หลายเดือนก่อน

      @@boblawson1006 absolutely brilliant information, thanks for taking the time to share your knowledge. I will take time to absorb the details and I'm sure many people will benefit from this. Best wishes, Dean.

    • @boblawson1006
      @boblawson1006 หลายเดือนก่อน

      @@retromechanicalengineer Just check I'm right, Dean. I know what I was taught nearly 60 years ago. I also know that sometimes, you accept info from someone you respect as being "gospel" and they can be wrong...
      Yet another thing I know is that destroying someone's strongly held, but wrong, beliefs by showing them the manual... damages your working relationship with them, however diplomatically you attempt to deal with it...
      Even proving empirically with a stopwatch that set up correctly, a saw cuts a given workpiece faster doesn't gain you friends...
      I got more blunt blades to make hand tools with, of course...
      One thing I didn't mention, was that cutting (fairly) thin walled tube was one situation where blade reversal may be beneficial.
      A blade, correctly oriented will "bite" tube often can't be clamped tight enough to resist rolling when the blade bites.....Using a worn blade reversed, works... (or can work) take care when trying. HSS blades disintegrate. Old HCS and bimetal were more forgiving...