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  1. #1
    Silver Member Brahmus's Avatar
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    Aug 2008
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    South Louisiana

    Default MMM vs RFM

    Going down the list to dial in the 3520 I want. I'll have about 5.5 acres to mow after all the clearing and cleaning up. Half open, Half treed, but tall trees. I also have 2 riding offbrand mowers if needed.

    Anyone with experience with both give me the pros, con's and suggestions on what model would be best for my machine, area.

  2. #2
    Veteran Member CinderSchnauzer's Avatar
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    Apr 2006
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    1,237

    Default Re: MMM vs RFM

    Well on a 3520 for a MMM you will need the mid PTO, rear SCV and probably 72" 7-Iron MMM - not cheap - dedicated setup. This will let you cut outside circles around things much easier than a RFM. Tight inside corners will still need supplemental trimming and if you back / drive into a corner it will still be about 3 feet short. Stability on hills may be better with MMM.

    RFM will be a lot cheaper, especially if you don't need mid PTO or Rear SCV for anything else. Cutting around things is more difficult, especially need to watch whale tail effect. You can back into corners, under things, over things - not possible with MMM. Rear discharge type RFM will not leave wind rows of cut grass like side discharge. RFM will work on any brand tractor with sufficient HP.

    Day after cut quality - probably no one could tell the difference, if both are quality units.

    I'd say, the more open the cutting area - better suited to RFM. More obstacles - MMM.
    2007 JD CAB 3320 eHydro, 300CX FEL, GX720 BH, 72" 7-Iron, 48" Horst Pallet Forks, LuckNow 60" Rear Snow Blower
    2006 Craftsman GS 6500 - 54" Deck
    2013 JD X739 - 60HC Deck with Auto Connect

  3. #3
    Silver Member Brahmus's Avatar
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    Aug 2008
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    South Louisiana

    Default Re: MMM vs RFM

    Great explaination. Sounds like I'll be going with a RFM. I can't justify the extra $$ for a MMM that may only slightly increase the ease of cutting. and a very good point that a RFM can be pulled by any brand tractor.

  4. #4
    Silver Member
    Join Date
    Mar 2008
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    218
    Location
    Rockford, MI
    Tractor
    JD 3720 CAB

    Default Re: MMM vs RFM

    Let me add my $.02. I've got a 3720 cab with a 82" Frontier rear finish mower thats being loaned to me by my dealer(thanks Jim). I've been using it all summer to mow my lawn which is about 2 acres and I've used it 3 OR 4 times to mow out at the local airport which is about 10 acres. My old unit was a 4100hst with a 60" mmm so I do have about 8 years of experience with that. While I like the RFM I really can't wait for my MMM to arrive. The RFM is great for large open areas, but when there are a lot of trees to go it's a pain in the neck(literally). It's hard to mow around edging, trees, and corners. Mainly because of the swing. The wheels like to tear into the grass when going from forward to reverse if the ground is soft, so I'm constantly lifting the deck slightly to get the wheels to rotate in the right direction. On the positive side, it's an absolute mowing monster in the open areas, it's build like a tank, and the cut quality is very good. Also sharpening the blades is very easy. I have the top and tilt kit so I can get the deck way up in the air. I always found my old MMM far more maneuverable for getting around trees and edging. A very good cut quality and removal of the unit was only about a 3 minute job. I realize that the 3720 is larger than my old 4100 so it probably won't be quite as maneuverable. The MMM is more money, but it's well spent. In my opinion. I'm currently waiting for the new drive over decks to come out. Should be soon.

  5. #5
    Elite Member
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    Dec 2001
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    3,175

    Default Re: MMM vs RFM

    js, same here., i actually saved some bucks by looking for a used 72 7 iron and I got a 2006 7 iron MMM for my 2008 3520, and i gotta tell you that big vacuum works real well. i gotta go head and sharpen my blades though. I think I will get an extra set and trade them off - one goes dul and the other goes on.

    Ooops forgot, i also have a flail mower, so I guess I am really kinda neutral.
    Nuru
    JD 3520


  6. #6
    Elite Member
    Join Date
    Aug 2004
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    3,193
    Location
    Red Oak, Texas
    Tractor
    JD 5525 and 5093e Kubota SVL75

    Default Re: MMM vs RFM

    Quote Originally Posted by Brahmus
    Going down the list to dial in the 3520 I want. I'll have about 5.5 acres to mow after all the clearing and cleaning up. Half open, Half treed, but tall trees. I also have 2 riding offbrand mowers if needed.

    Anyone with experience with both give me the pros, con's and suggestions on what model would be best for my machine, area.
    How much does the MMM cost with everything you need?

    A RFM might be a better call - easier to take off, etc when you aren't using it.

    Now, mowing around things can be a bit more work with a RFM, but you have e-hyrdo in that thing, so it won't be too bad. The biggest headache will be turning around to back up under tress, etc.

    Maybe the dealer can let you demo each?

    Also, you need to consider widths. The wider the deck, the higher the chance of scalping your yard.

    D.
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  7. #7
    Elite Member
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    Feb 2002
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    3,645
    Location
    western,pa.
    Tractor
    Kioti DK 35

    Default Re: MMM vs RFM

    I have both a MMM (side discharge) and a RFM (rear discharge).
    Personally I much prefer the rear discharge RFM.
    The rear finish mower is cheaper to buy, much easier/faster to remove install, Its rear discharge so I can trim from either side.
    Vince,
    Kioti DK 35
    Hustler Super Z

  8. #8
    Elite Member
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    Aug 2004
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    Location
    Red Oak, Texas
    Tractor
    JD 5525 and 5093e Kubota SVL75

    Default Re: MMM vs RFM

    Quote Originally Posted by DK35vince
    I have both a MMM (side discharge) and a RFM (rear discharge).
    Personally I much prefer the rear discharge RFM.
    The rear finish mower is cheaper to buy, much easier/faster to remove install, Its rear discharge so I can trim from either side.
    That is a good point about the rear discharge piece. Does it plug up any?

    I tell ya - working on a RFM has got to be a lot easier than a MMM.

    D.
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    Darin Divinia
    DDR Longhorns
    Registered Texas Longhorns
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  9. #9
    Elite Member
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    Feb 2002
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    3,645
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    western,pa.
    Tractor
    Kioti DK 35

    Default Re: MMM vs RFM

    Quote Originally Posted by ddivinia
    That is a good point about the rear discharge piece. Does it plug up any?
    I tell ya- working on a RFM has got to be a lot easier than a MMM.
    No. It distributes the clippings very well. And its a lot easier to work on than the MMM.
    The rear discharge mows very nice. Seems to show a lot less clippings than my side discharge MMM.
    I rarely use my MMM. I prefer the rear finish mower.
    Vince,
    Kioti DK 35
    Hustler Super Z

  10. #10
    Platinum Member
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    May 2008
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    995
    Location
    Eastern Ia
    Tractor
    JD 4310 eHydro, JD 322

    Default Re: MMM vs RFM

    I had this same dilemma, I went 72 mmm on 4310 because I didn't want to always be turned around to see the edge of the cut. I would love the rear discharge of rmm as a 72 makes windrows if you turn around and go the opposite of direction ( I like the golf course look) but I have too much to trim around. Also my tractor was used and had mid PTO and found a great deal on 72 mmm that was a demo at a local dealer. The price was a wash.

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