John Deere lowered thier blade tip speed?

Discussion in 'Lawn Mowing' started by joeg2246, May 11, 2005.

  1. joeg2246

    joeg2246 LawnSite Member
    Messages: 169

    I was told by my local JD dealer that the reason thier blade tip speed was 16000 rpm's vs most others at around 18000 rpm's was due to thier lowering it so they can increase the lifespan of thier spindles. He mentioned that because of thier deck they did not need the extra rpm's
    Does anyone buy that or am I being sold here?
  2. Big Hoss

    Big Hoss LawnSite Member
    Messages: 57

    What is the JDs spindle housing made of ? Sounds to me like it is probably cast aluminum . Are they using a sealed type of bearing ?
    Big Hoss
  3. MMLawn

    MMLawn LawnSite Gold Member
    Messages: 3,569

    No there are not sealed spindles and I can tell you first hand my JD Z's still throw out clippings just as far as any of my other mowers and cuts wonderful with never any clumping and the tip speed is set at 16,800
  4. TLS

    TLS LawnSite Fanatic
    Messages: 7,943

    What RPM do they set their engines at?

    That makes a big difference.

    They may still be using 3600 RPM, while DC, eXmark and others use 3750.
  5. Pecker

    Pecker LawnSite Bronze Member
    Messages: 1,454

    Same here on my 757.
  6. stumper1620

    stumper1620 LawnSite Bronze Member
    Messages: 1,889

    i agree,
    if the tip speed is that much different, you would never know it by the cut I get. also, JD throws clippings so damn far its hard to control where they end up. some times way over 10 feet. either way tip speed won't sell me on anything else, JD used to be way behind the others now I think the others better either catch up or get out of the way, better cut, single blades, no clipping build up under the decks, I would say JD is on to something here.
  7. chefdrp

    chefdrp LawnSite Bronze Member
    Messages: 1,384

    i use my 737 as a back-up mower. I like my Lesco ZTWO better.
  8. DLCS

    DLCS LawnSite Platinum Member
    Messages: 4,386

    I like my 757 so much I bought another one. Looking to order a new 997 with a 72" deck this fall. Blade tip speed doesn't mean jack, if the mower doesn't leave a nice cut. I could careless what JD has for blade tip speed, its the beutifull cut that keeps me buying JD with 7 Iron decks.
  9. MMLawn

    MMLawn LawnSite Gold Member
    Messages: 3,569

    AMEN to that!

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