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angle of attack

Discussion in 'Commercial Snow Removal' started by plowed, Oct 4, 2002.

  1. plowed

    plowed Senior Member
    Messages: 344

    On our Fisher setups we have the moldboard attached to the frame/headgear in the middle hole. Where do you guys have yours? If we were to drop them into the bottom hole, how much does this change the angle of attack? Do you notice any benefit, perhaps as the snow rolls off the foils?

    Tnx

    John
     
  2. Mike Fronczak

    Mike Fronczak Member
    Messages: 64

    It depends on height of truck(frame off ground). Dealer should be able to help you find correct angle or try their web site, maybe thgeir tech section, or call or e-mail them.
     
  3. Pelican

    Pelican 2000 Club Member
    Messages: 2,075

    I believe ideally you're supposed to have your A frame as close to level as possible, using the different mounting holes to achieve this.

    Raising the rear of the A frame will put more down pressure on the blade, lowering it will lessen the effect.
     
  4. slplow

    slplow PlowSite.com Veteran
    Messages: 594

    On the bottom hole your fisher will scrape better but will not stack snow as high. ( do to the a frame hitting the stops sooner ).I also notice that the trip is less harsh in the bottem hole.
     
  5. plowed

    plowed Senior Member
    Messages: 344

    Thanks guys for all your help. This all makes sense. all of them sit level, so there's no problem with that.

    As far as stacking goes, we have some lots where we stack over the curbs so as to keep parking spaces open. Even with last years somewhat dry season, we still had some piles with good height that we were able to push up.

    I think I'll leave them as is for now.

    Thanks again.

    John
     
  6. Brian Simmons

    Brian Simmons PlowSite.com - Sponsor
    Messages: 196

    The a-frame needs to be as close to level as possible. Having the rear of the a-frame higher will allow the blade to trip easier. having the rear of the a-frame to low will cause the blade to trip harder than designed which could result in a broken a-frame over time
     
  7. TLS

    TLS PlowSite.com Addict
    Messages: 1,425

    If A-Frame is mounted too high at the truck, at full angle, the leading edge will gouge and the trailing edge will not be touching pavement.

    Keep them level!
     
  8. Mick

    Mick PlowSite.com Veteran
    from Maine
    Messages: 5,546

    Hey, simmons156

    Hi, Neighbor.