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  • power hacksaw question.

    i just got an old excelsior 2-a power hack for $50. i have an old millers falls saw i got a while ago also. the mf needed work, i completley dissassembeled, cleaned painted, fixed, reassembeled it. when i did i noticed that it cut as it was pushing OUT, AWAY from the fixed vice jaw, thought i screwed something up on reassembley, took a while to take it all apart and figure out how to assemble it to cut on the "in" stroke, TOWARD the fixed jaw.

    fired the exc up today, it was complete and running when i got it. the blade cuts on the "out" stroke, AWAY from the fixed jaw.

    is this correct ??? should i change the millers falls saw back???? or do i need to work on the excelsior after all?????

  • #2
    Power hacksaw

    I have a 1946 Keller power hacksaw, and the manual for the saw states the teeth point toward the back of the saw and toward the fixed jaw of the vise.

    Jack
    jack

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    • #3
      Used to have an "EXCEL" power hacksaw that looked a bit like this one:

      http://frogvalley.com/blacksmithimag...%20hacksaw.jpg

      It cut best on the back stroke (teeth pointed towards the rear), 'cause on the push/return stroke the frame was lifted slightly by the link on the crankarm. Also used std 12" blades. Finally got rid of it as life was too short to stand around waiting for it to finish cutting. If I had room at the time I would have kept it around for those big jobs that could stand a week's wait.

      If you have any POP MECH mags from the 40/50's you'll see that saw advertised regularly..........just like SB's were.

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      • #4
        that looks like it, only mine's missing the hanging weight, and there is a small toggle in the frame instead of the box bolted to it.it looks like it'll take 12 or 14" blades, and the vice angles on it.

        you just told me what i didnt want to hear! now ill hve to take it apart and do some re-arrangeing to get it to lift on the forward stroke.

        this is the one i "work" with:
        http://www.grizzly.com/products/G0561

        i just like these old machines. there was alot of ingenuity going into then at the time. and, for now , i have a little room to keep them. still need an old benchtop shaper (or two!!)though, although they prob never get used in as i have a vert mill. not much of a "history buff" kinda guy, but i like these old machines!!

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        • #5
          I used to think they were kind of cheesy but at one shop I worked at it was all the maintenance shop had other than a dirty old abrasive chop saw.

          I was impressed with the power hacksaw, when it came to big stock it was a brute.

          I saw a guy try to use it to cut stove pipe. LOL that was very funny.

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          • #6
            Are you sure it is running in the right direction???

            The connecting rod should be on the bottom of the crank and pulling the saw blade into the work. On the return stroke the crank comes over the top and pushes the blade away while the holder and arm is lifted off the cut so it don't drag the blade on the cut.
            It's only ink and paper

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            • #7
              Originally posted by Carld
              Are you sure it is running in the right direction???

              The connecting rod should be on the bottom of the crank and pulling the saw blade into the work. On the return stroke the crank comes over the top and pushes the blade away while the holder and arm is lifted off the cut so it don't drag the blade on the cut.
              there is a little arrow cast into the face of the disk that the link is attached to, and it is following the arrow.

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              • #8
                Originally posted by Carld
                Are you sure it is running in the right direction???

                The connecting rod should be on the bottom of the crank and pulling the saw blade into the work. On the return stroke the crank comes over the top and pushes the blade away while the holder and arm is lifted off the cut so it don't drag the blade on the cut.
                From memory, this is how mine was set up: the crank arm was on the LHS with the geared wheel it was attached to, and rotated CW. Beginning the "cut" stroke the arm being at the "nine" o'clock position moved over the top towards the "three" o'clock position (dragging the blade), then began the "return" stroke on the bottom which pushed up on the blade's arm. In addition, it had a "saw toothed" plate with pointed weighted fingers (2) that locked the arm in the "up" position during the return stroke to ease the stress on the blade. There was a simple method of unlocking those "walking" fingers for the "cut" stroke, just don't remember the exact details though.

                The saw (orig $52.75) was made by Excel Machine Tool, Benton Harbor, MI. Found a small ad/picture Pg 64 in POP MECH 12-51

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                • #9
                  Well, I suppose they go the direction the manufacturer made them for but at least his is marked so he knows what direction it should turn.

                  I have a power hacksaw once and it seems the lifting pawls did not lift the arm if I turned it the wrong direction but that was about 12 years ago since I had the saw. Mind--blured by-----time.
                  It's only ink and paper

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                  • #10
                    Originally posted by Chester
                    From memory, this is how mine was set up: the crank arm was on the LHS with the geared wheel it was attached to, and rotated CW. Beginning the "cut" stroke the arm being at the "nine" o'clock position moved over the top towards the "three" o'clock position (dragging the blade), then began the "return" stroke on the bottom which pushed up on the blade's arm. In addition, it had a "saw toothed" plate with pointed weighted fingers (2) that locked the arm in the "up" position during the return stroke to ease the stress on the blade. There was a simple method of unlocking those "walking" fingers for the "cut" stroke, just don't remember the exact details though.

                    The saw (orig $52.75) was made by Excel Machine Tool, Benton Harbor, MI. Found a small ad/picture Pg 64 in POP MECH 12-51
                    that part dosent sound framiliar, mine has an eccentric behind the crank wheel, with a "con rod" of sorts on it that causes an "up+dn" motion to a bar on a pivot.the other end of this pivoting bar pushes on a mechanism that both lifts and pulls out on a piece to lock it to the smooth bar. kind of hard to explain, but there's no "teeth" on it. and the saw is held in the "up" position by another seperate bar.

                    ive also heard tell that mine was made here in pa by r-something-ford ??? that made them under the excelsior name ???

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                    • #11
                      i do think that the bar that hold the saw in the "up " position could have been home made.

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                      • #12
                        When you disassembled it, could you have put the disk back on backwards meaning the arrow would be pointing the wrong way?

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                        • #13
                          i havent dissassembled it. i was saying that i dissasembeled the first one, as it needed work, i was SURE i put everything back correctly, but it cut coming out. i re-timed the cam in it that caused the arm to raise and got it to go on the in stroke. this one cut on the out from being plugged in. IF it is ass. wrong, it was not by me.

                          the "show side" of the disc has an arrow, the other side is just a flat casting that faces the working gears (on both saws actually). so there's pretty much only one way.

                          i know of a guy who uses a power hack for gun building on a diff site, i asked him and he said his (although diffrent than both of mine), he says it cuts on the out stroke. but it just dosent seem right to me, i would think that they would want the pressure of the teeth pulling on it to work on the stronger part (fixed jaw)

                          from all ive seen to this point, id have to think that they are supposed to cut on the out stroke, it just seems wrong to me????????

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                          • #14
                            here's the post w/ a pic of his saw in it also.

                            warningjudging by recent arguments here, i just want to let people know before clicking on this, the article describes making a LEGAL rifle suppressor in the US. if you are offended, or beleive it to be illegal to view in your location, DO NOT CLICK.

                            http://livetoshoot.freeforums.org/viewtopic.php?t=81

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                            • #15
                              If anyone is still interested in these saws (Also sold as Craftsman #108.1501), somebody has photographed one in detail here............grab those pictures while you can.

                              http://cgi.ebay.ch/CRAFTSMAN-No-108-...QQcmdZViewItem

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