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  1. #1
    Join Date
    Nov 2007
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    Narangba, QLD, Aust
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    195

    Default This looks wrong...

    I've bought a second-hand Rexon RBS-12A band saw and while everything looks to be in pretty good condition I'm concerned about how the blade is positioned on the wheels (see pics).

    The blade is running higher than the sides of the wheels. Almost as if they're either a very thick tyre there or one on top of another.

    Is this safe?

    I'm worried if a ham fisted operator (me) was adjusting something out just in normal operation it might come off in a big way.

    Any suggestions?

    Cheers
    Redbeard

    Sent from my SM-N975F using Tapatalk

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  3. #2
    Join Date
    Jun 1999
    Location
    Westleigh, Sydney
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    73
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    9,021

    Default

    The tyre looks OK, it should be slightly crowned. The blade should be sitting in the middle of the crown. You can adjust it by first, setting the blade at the correct tension and moving all the blade guides away from the blade, then loosening the locking handle and turning the top wheel adjuster at the back of the top case. Turn the top wheel by hand as you do this, and you should see the tilt of the wheel change and the blade move. Once you have the wheel centred, close the top case and let the saw run for a few seconds. Switch it off and check the position of the blade. Once it's right, you can reset the guides.
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  4. #3
    Join Date
    Nov 2007
    Location
    Narangba, QLD, Aust
    Posts
    195

    Default

    Quote Originally Posted by AlexS View Post
    The tyre looks OK, it should be slightly crowned. The blade should be sitting in the middle of the crown. You can adjust it by first, setting the blade at the correct tension and moving all the blade guides away from the blade, then loosening the locking handle and turning the top wheel adjuster at the back of the top case. Turn the top wheel by hand as you do this, and you should see the tilt of the wheel change and the blade move. Once you have the wheel centred, close the top case and let the saw run for a few seconds. Switch it off and check the position of the blade. Once it's right, you can reset the guides.
    Thanks, I'll give that all a go.

    Sent from my SM-N975F using Tapatalk

  5. #4
    Join Date
    Jul 2011
    Location
    Berowra Waters
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    475

    Default

    Just adjust the top wheel tracking , as explained in post above perfectly

  6. #5
    Join Date
    Nov 2007
    Location
    Narangba, QLD, Aust
    Posts
    195

    Default

    I'm new to bandsaws so it's softly softly to start. That blade is being replaced first for something a bit more robust and less like a hacksaw.

    Sent from my SM-N975F using Tapatalk

  7. #6
    Join Date
    May 2011
    Location
    Albury
    Posts
    1,952

    Default

    Have a look at this - YouTube - Alex Snodgrass is the bandsaw guru.
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  8. #7
    Join Date
    Jun 2010
    Location
    Bundaberg
    Age
    50
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    2,019

    Default

    Quote Originally Posted by aldav View Post
    Have a look at this - YouTube - Alex Snodgrass is the bandsaw guru.
    Alex’s method is to set the back of the tooth gullet in the centre of the wheel, not to centre the blade to the wheel. I was a bit dubious at first but gave it a try and am now a convert. My generic cast iron framed unit is set this way as are the three pressed steel framed units at the Bundaberg Woodworkers Guild; I get no drift and clean cuts. After changing or resetting the blade my acid test is to slice off a 1mm thick veneer off of a ~4”-5” wide board at the outer edge, not the face against the fence.
    Nothing succeeds like a budgie without a beak.

  9. #8
    Join Date
    Nov 2007
    Location
    Narangba, QLD, Aust
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    Default

    That looks really quite simple, even a mug like me should be able to sort that out.

    Thanks fellers.

    Sent from my SM-N975F using Tapatalk

  10. #9
    Join Date
    Nov 2004
    Location
    Brisbane
    Posts
    1,131

    Default

    Quote Originally Posted by Chief Tiff View Post
    Alex’s method is to set the back of the tooth gullet in the centre of the wheel, not to centre the blade to the wheel. I was a bit dubious at first but gave it a try and am now a convert. My generic cast iron framed unit is set this way as are the three pressed steel framed units at the Bundaberg Woodworkers Guild; I get no drift and clean cuts. After changing or resetting the blade my acid test is to slice off a 1mm thick veneer off of a ~4”-5” wide board at the outer edge, not the face against the fence.

  11. #10
    Join Date
    Apr 2017
    Location
    Éire
    Age
    35
    Posts
    41

    Default

    Those tires look flat to me?
    If so, the setup looks good for flat tires,
    You could clean them along with your blade with a bit of a scrape as resin/pitch can cause issues.

    Tom

  12. #11
    Join Date
    Aug 2008
    Location
    avoca beach nsw
    Posts
    264

    Default

    the Alex Snodrass vid was great, i have a 20 yo carbatec 14 in machine , my mantra was the top and bottom wheel had to be co planer,like a straight edge over both wheels , on mine that put the the gullet well forward,but that was my best advice or so I thought, did a tune up according to Alex , smoother and cleaner on an old machine, like his blade tension, , thanks for the post

  13. #12
    Join Date
    Feb 2018
    Location
    Shepparton
    Posts
    219

    Default

    I agree I have done as Alex suggested and have the blade tracking as mentioned and have no drift and can cut 2mm slices no problem.

  14. #13
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
    Posts
    2,658

    Default

    As a side issue, where is the best place to buy new tyres for a 14"band saw?
    The person who never made a mistake never made anything

    Cheers
    Ray

  15. #14
    Join Date
    Jun 2010
    Location
    Bundaberg
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    50
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    2,019

    Default

    I bought genuine Carter polyurethane tyres from Gregs Machinery but there are generic orange poly tyres available on Fleabay etc at around half the price.
    Nothing succeeds like a budgie without a beak.

  16. #15
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
    Age
    70
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    2,658

    Default

    Thanks for that CT
    The person who never made a mistake never made anything

    Cheers
    Ray

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