Johd Deere Vs. Scag

Discussion in 'Lawn Mowing' started by NINER, May 21, 2008.

  1. NINER

    NINER LawnSite Member
    Posts: 204

    We Took A Jd 830 27 Hp With 60" Deck A Jd 850 31hp With 60" Deck And A Scag Tt 27hp With 60" Deck To The Same Property Mowed The Same Thick Grass With A Pretty Steep Hill Today. The 830 Had A Little Not Too Much Drop In Blade Speed 850 No Drop In Blade Speed And Scag With No Drop In Blade Speed. What We Found Out Was There Was No I Repeat No Difference In Cut Quality. Measured The Deck Pullys On All Three Scag Had A 6.5" Pully Jd 830 7" And The 850 Was A Deck From A 820 Before Jd Relized It Was The Wrong Deck Size With A 6.5" Pully On It. We Will Try The 6.5" Pully On The 830 Thursday And See What Happens. Any Body Have Any Other Ideas We Should Try?
     
  2. TandM

    TandM LawnSite Senior Member
    from south
    Posts: 772

    that is very interesting
     
  3. johnnyusa

    johnnyusa LawnSite Senior Member
    Posts: 512

    I thought you couldnot get a 850 with a 60" deck. Let me know?
     
  4. NINER

    NINER LawnSite Member
    Posts: 204

    THEY TOOK A DECK OFF ONE OF THE 820'S WE EXCHANGED FOR THE 830'S WE ARE CURENTLY RUNNING.
     
  5. johnnyusa

    johnnyusa LawnSite Senior Member
    Posts: 512

    I wonder if i could get one like that? Ill ask
     
  6. NINER

    NINER LawnSite Member
    Posts: 204

    I DIDNT HAVE TIME TO CHECK OUT THE OVER ALL MACHINE TO SEE WHAT CAN BE DONE BUT ONE PROBLEM WITH THAT IS THE REAR DECK WHEELS HIT THE REAR TIRE WHEN MOWER DECK IS RAISED. MAYBE WIDER TIRES ON THE 850 OR A WIDER STANCE.VERY POWERFUL MOWER THAT WAY THOUGH.
     
  7. johnnyusa

    johnnyusa LawnSite Senior Member
    Posts: 512

    Niner, whats the reason for the smaller deck pulley ? More blade speed? Price aside 830 or the scag which one do you like better? ive been looking to get 2 mowers A walker ghs and a ztr possibly a deere. My dealer sells both and he prefers the deere.
     
  8. NINER

    NINER LawnSite Member
    Posts: 204

    YEAH TRIING TO GET MORE BLADE SPEED. ITS GOING TO COST CLOSE TO $8000.00 MORE TO REPLACE THE 8 JD 830'S WE HAVE WITH SCAG AND THEY ARE CUTTING JUST LIKE JD. THE DEALER HERE SELLS BOTH ALSO BUT I WOULD LIKE TO WORK THINGS OUT WITH THE JD THEY TREAT US WELL.
    WE USED TO RUN SCAG ABOUT 6 YEARS AGO. WENT TO TORO FOR A FEW YEARS THEN TO THE DEERE HAD LOTS OF PTOBLEMS WITH 757'SA THE PAST THREE YEARS SWITCHED TO 820'S THIS YEAR HAD THEM REPLACED WITH 830'S AND WORKING OUT THE BUGS.
     
  9. NINER

    NINER LawnSite Member
    Posts: 204

    Ok Tried The 6.5" Pulleys On The Mower Deck Was Some Improvement In Cut Quality And Very Little Blade Speed Reduction Going Up Hill. The 757's Has A 6" Pully System On Them. Iam Going To See If The Dealer Can Get Me Some 6' Pullys And Check Into Seeing If The Clutch Off The757 Will Fit Because It Also Is 6" Or If They Can Get One. I Am Thinking If This Set Up Is Possible And Get The Engine Rpm's Up 6500 Or 6550 Problem Will Be Solved. Anybody Have Any Input? It Will Be Greatly Be Appreciated.
     
  10. JimQ

    JimQ LawnSite Bronze Member
    Posts: 1,139

    That engine RPM sounds a little fast. Try 3750 RPM (no load).

    Smaller blade sheave will raise blade tip speed but also consume more hp.

    Blade tip speed isn't everything. The 7 Iron does pretty well without modification.

    Q
     

Share This Page