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Demo on changing a poly cutting edge on an inverted blower

Discussion in 'Equipment, Tools & Vehicle Pictures' started by Neige, Feb 8, 2012.

  1. Neige

    Neige Sponsor
    Messages: 2,197

    So my brother John and I spent the day filming how to change a UHMW poly blade on one of our inverted blowers. I hope it helps, and demystifies some of the work. Enjoy, I will also be putting it up in my video thread.
    http://www.youtube.com/watch?v=fzbRoVF05pA
     
  2. exmark

    exmark Senior Member
    Messages: 340

    Very informative video.
     
  3. Burkartsplow

    Burkartsplow PlowSite Veteran
    Messages: 3,245

    how long will the new blade last?
     
  4. RLM

    RLM PlowSite.com Addict
    Messages: 1,270

    Paul what are the dimensions of the cutting edge (thickness and width, obviously length is specific to blower), of cutting edge & retaining strip ? Is there a lip that the cutting edge sits against ?
     
  5. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    20-25 Outings.....it was in the video ;)
     
  6. Neige

    Neige Sponsor
    Messages: 2,197

    Mike I will have to check it out for your blower model, I think for a SHoule its 6 inches deep and 1.5 inches thick. If you could pm me your phone number I will give you a call tomorrow, much easier for me than by email.

    And yes the blade should last around 20 outings, it really depends on the conditions of the streets. In my area the are now mostly covered with packed snow and ice, the blade hardly gets any wear in these types of conditions.
     
  7. G.Landscape

    G.Landscape Senior Member
    from Ontario
    Messages: 847

    Great Video...you new exactly what question I wanted to ask when the video started, haha
     
  8. greywynd

    greywynd PlowSite.com Addict
    Messages: 1,343

    Interesting, I've never seen UHMW used on a blower yet, so I certainly learned something from it. I have worked with the material though, for those making their own, you can deal with it like wood, so the notch for the steel strip could be cut on a table saw for example.
     
  9. IMAGE

    IMAGE Sponsor
    Messages: 1,741

    Nice video Paul!

    I put 2" thick UHMW on a few blowers this year, and we mounted them different then Paul did. We used the steel cutting edge as a template to drill 5/8" holes in 2" thick UHMW. Then used a 1.25" bit to countersink the holes for use with a "Scraper Blade Bolt" if you know what they are.

    The trick to countersinking the hole is to put a stop in the bottom of the hole for the larger bit to bottom out on. (I used a short piece of 5/8" bolt). Then just bolted it on like normal. After doing it a couple times I have it down to about a 15-20 minute process also. This method would work for any blower without the need for the notch in the UHMW.
     
  10. paper65

    paper65 Junior Member
    from Quebec
    Messages: 16

    The first UHMW poly blade that I installed on our blower was mounted the way IMAGE expose but we have change to Paul method after having hit couples of unfrozen street border. When hitting border uhmv flex a bit causing scraper blade bolt to expand initial hole, after several hit bolts seems to be loose and finally the head of the bolt perforate remaining material causing the blade to unhook to the blower. We use standard blower with 1.5" thick UHMV, 2" prevent some snow to load into the blower leaving pile at the end.
    Paul in your video we can see that before replacing the blade one shoe was inside the blower and the other outside, after replacing the blade both was put inside but I suggest you to put both outside. Its a good way to protect border and blocks from scratch that can turn into rust in the spring, it also can absorb a part of eventual impact.
     
  11. Neige

    Neige Sponsor
    Messages: 2,197

    Some times we will install them on the outside, but often when they do catch a wall it will ripe it off, when we install them on the inside we never loose them.
    Most of our blowers the cutting edge is still attached the old way like you and Steve describe. I hear what you are saying, a quick fix to your problem is to weld a 1/2 inch square bar right behind your poly cutting edge. This will really protect the bolts from being pulled through. See picture.

    closeup of square bar.jpg
     
  12. MRHORSEPOWER1

    MRHORSEPOWER1 Member
    Messages: 82

    1/2" square bar is a great idea. Pronovost blower has flat end sides; Normand has angled sides which works best to install poly skid shoes on outside to flush straight across without worrying about ripping it off. It was Steve's idea to install that way. Thanks for the picture showing about square bar mounting on bottom of blower.
     
  13. edgeair

    edgeair Senior Member
    Messages: 597

    So is that how your edges come, with the notch pre made? Or do you make the notch yourselves?

    What would the notch dimensions be roughly? Looks like about 1/2 inch of material left to sandwich between the blower structure and the metal plate.
     
  14. serafii

    serafii Senior Member
    Messages: 285

    paul im in the montreal area and im actually looking for some black 3/8 UHMW. any idea where i can get it?
     
  15. Neige

    Neige Sponsor
    Messages: 2,197

    see attached pics

    I will have to check with my brother.

    tef1.jpg

    tef2.jpg

    tef3.jpg
     
  16. Neige

    Neige Sponsor
    Messages: 2,197

    and these two pictures
     
  17. edgeair

    edgeair Senior Member
    Messages: 597

    That answers the questions, thanks!
     
  18. Neige

    Neige Sponsor
    Messages: 2,197

    Ops forgot the pics.

    tef4.jpg

    tef5.jpg
     
  19. hammerstein

    hammerstein Senior Member
    Messages: 318

    How much does UHMW plastic go for? I have a customer that we are doing a clean up for that has many 4x8, 1 - 2" thick sheets of it that he wants gone.
     
  20. Neige

    Neige Sponsor
    Messages: 2,197

    Wow depends on the quality, and I am no expert to be able to tell you, but each sheet can go from $800 to $1500.