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  1. #11
    Super Member Gary Fowler's Avatar
    Join Date
    Jun 2008
    Posts
    7,758
    Location
    Bismarck Arkansas
    Tractor
    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: Calculated lost loader lift capacity with quick attach.

    Quote Originally Posted by stuckmotor View Post
    A friend told me that the problem with overloading a FEL was breaking wheel rims and spindles. Has anyone ever done this?
    What breaks a rim is loose lug bolts. You don't actually break a rim, just the bolt holes. In all cases, the lug bolts get loose and allow some flex which eventually fatigues the metal and crack out the rim around the holes. I have seen old tractors with the bolt holes so wallowed out from loose lug bolts that they drilled new holes in attempt to not replace the rim.
    CAUTION: Check your lug bolts frequently AND all the bolts that hold the FEL on to the tractor frame. I had an old 1984 Yanmar and the frame bolts would not stay tight. I had a couple that I had to tighten every time I use it. So far none has came loose on my LS with exception of 2 behind the fuel tank and I don't think they were ever tightened to start with as they were difficult to see much less tighten. There was a couple of lug bolts that were a bit loose when I checked them. Every 50 hours would be a good checklist to check ALL the attachment bolts. Check the lug bolts and all attachment as soon as you get the tractor.
    As for broken spindles, they do break and not necessarily from loader work. I saw one at a tractor dealer that was broke and the parts guy said the owner only used it to mow with, no loader. Broken spindles would be a design flaw or machining flaw, not necessarily overloading.
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  2. #12
    Veteran Member
    Join Date
    Jul 2003
    Posts
    1,456
    Location
    SW Indiana
    Tractor
    Ford 1920 4x4 (traded in on Kubota). Case 480F TLB w/4 in 1 bucket, 4x4. Gehl CTL60 tracked loader, Kubota L4330 GST

    Default Re: Calculated lost loader lift capacity with quick attach.

    I think your analysis is correct.

    Another consideration in your favor is that (I think) loaders are rated at what they can lift to full height, which is less than what they will lift in the lower part of their range. So you may not be able to lift, say, a large bale to full height, but you might be able still load it onto a truck.

    And then there is this. My neighbor wanted me to move some skids of landscaping bricks to the other end of his yard. My L4330 would not lift the entire skid so he started removing the furthest bricks from the tractor, several at a time, until the loader would lift it. In other words, we were very near the capacity of the loader in that position. I had on a medium weight box blade for ballast since space was too tight for a bush-hog back there. Anyway, the tractor felt a little squirrelly once it was moving and once I started into a turn, one of the back wheels started to lift off the ground. So I guess that just because it can be lifted doesn't necessarily mean its a good idea to move it.

  3. #13
    Veteran Member SSdoxie's Avatar
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    Jun 2010
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    2,103
    Location
    Cumberland Plateau, TN
    Tractor
    Bobcat CT225

    Default Re: Calculated lost loader lift capacity with quick attach.

    3v0, You have the right idea regarding calculations but each loader & QA system will vary some. Here are the comparisions of mine with & without QA.

    All Measurements are @ 20" front of bucket pivot
    Rate Lbs. w/pin on w/QA
    Full lift 1108 1032 -6.9%
    59" (bucket level w/rear pivot 1264 1168 -7.6%
    Boom breakout (lift) @ ground 1644 1571 -4.4%
    Bucket roll back @ ground 2194 1989 -9.3%

    Average performance loss w/QA -7.1%
    Dennis

    CT225 w/7TL QA FEL, 60"tooth dirt bucket, 68" smooth bucket, Pallet Forks, Bale Spear. Hydrualic top llin, QH, 48 RC, 60" tiller, Angle blade, Landscape rake, Carry-all, Post hole auger.

  4. #14
    Veteran Member
    Join Date
    Sep 2009
    Posts
    1,357
    Location
    Up State S.C.
    Tractor
    AC WD 34 hp/3500 lbs MF 261 60 hp/5380 lbs

    Default Re: Calculated lost loader lift capacity with quick attach.

    Thanks to everyone for your advise on the loader. Some of the things you've said can be of immediate benefit. I hope to have this outfit for a long time.

  5. #15
    Veteran Member xring100's Avatar
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    Dec 2012
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    1,027
    Location
    Livingston County, Michigan
    Tractor
    Kubota M8540

    Default

    You mention a 10% lift height increase that really is not practical as this would only be possible if the curl cylinders are fully retracted putting the 4 bar linkage parallel to the ground. With pallet forks that would put the tips pointing towards outer space. But under level bucket or forks, no increase in height only increase in reach. Everything else sounds good enough for government work.

    Dave

    Dave

  6. #16
    Platinum Member
    Join Date
    Oct 2010
    Posts
    527
    Location
    WI
    Tractor
    '13 Yanmar Lx4100

    Default Re: Calculated lost loader lift capacity with quick attach.

    I havnt noticed any real decrease in capacity.

  7. #17
    Veteran Member xring100's Avatar
    Join Date
    Dec 2012
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    1,027
    Location
    Livingston County, Michigan
    Tractor
    Kubota M8540

    Default

    The easiest but far from most cost effective way to relive these concerns would be to keep your existing tractor and buy another tractor that not only comes with quick detach standard, eliminating the need for these calculations. But also lifts about 3 times your average usage but could lift about anything you could think you'd ever want to lift this does of course have some potential draw backs including $$$, but hey that's why you now have two tractors. No job to big, no job to small.

    How i selected my tractor
    I really only wanted about a 60 -70hp tractor but wanted close to 3000 lift capacity. So i could lift 3000 plus pallets out of a semi. Could not justify the extra cost of the JD 5M series open station so i bought the larger M8540. I dont worry about not being able to lift things now. If i can't lift something now it didn't need to be moved that bad
    i realize that this is not an option for most people. I was at my house 8 years before i could afford mine.

    Dave

    Dave

  8. #18
    Elite Member schmism's Avatar
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    Jul 2006
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    4,937
    Location
    Peoria IL
    Tractor
    New holland TC(33)

    Default Re: Calculated lost loader lift capacity with quick attach.

    the is such a diffrence in loader capacities of CUT and AG tractors. I have a good friend who has a 75hp case AG tractor. his loader will lift 5200 lbs. why do we know this? because he has used it to lift his empty 20' shipping container with the tare weight printed right on the side. my loader is about 800 lbs and 33hp. figure tripple the size, 99hp the loader capacity isnt anywere close.

    Just way to much diffrence in the way light CUT's are designed and built vs heavyer AG tractors
    Steve - TC33D 4x4 FEL, dual rear remotes with toys

  9. #19
    Elite Member
    Join Date
    Feb 2011
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    2,547
    Location
    Trivoli, IL
    Tractor
    SSTT (Sideways Snake Tain Tractor) and STB (sideways train box) tractor, dirt harvester

    Default Re: Calculated lost loader lift capacity with quick attach.

    i am brain fried at moment so i may be off, do a google search for "first class lever" pages should give examples of second and third class levers as well
    and i want to say search for "wiki 4 bar linkage" i think it covers 3 bar linkage, and up to 5 bar linkage.

    i think those search should give you multi examples of math.
    Ryan

  10. #20
    Elite Member Baby Grand's Avatar
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    Nov 2007
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    3,686
    Location
    Windsor, CT.
    Tractor
    Kubotas: L3240GST B2320HST B5100D & G5200H

    Default Re: Calculated lost loader lift capacity with quick attach.

    3v0 -Your math is good and problem statement is conceptually accurate.
    When you get the tape measurements and recalculate, your lift estimate will be very close.
    That's the problem with trouble.
    It always starts out as such fun."
    - Randall Brown

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