Neophyte said:
That's very interesting. I had asked my JD dealer if any of the tractors came with the self leveling feature and he told me that none of the JD compact tractors came with it. He said that only the 5000 series offered it and even then it was an upgrade from the 542 to 542SL. It goes to show you that the TBN collective is always smarter than many of the dealers.
Can't explain a dealer not knowing that the 400cx is a MSL FEL. No excuse IMHO since it's a distinct selling point advantage for Deere.
Neophyte said:
Like I said, I have never used a machine with a mechanical self-leveling loader. However, I was under the impression that it would prevent you from simultaneously curling the bucket and raising/lowering the arms. Is this the case?
There is absolutely nothing associated with a MSL setup that prevents the operator from adjusting the bucket curl/dump while simultaneously rasing/lowering the FEL booms.
Neophyte said:
My understanding is that mechanical self-leveling linkage also limits the amount of bucket curl in either direction. Therefore, a loader without this linkage can have a greater bucket curl.
If you are talking about rollback and dump angle, the exact opposite is true. MSL loaders typically have greater rollback and dump angles. I can't find numbers for the 400cx, but the rollback/dump angle spec (degrees) for the 542 vs 542 MSL are 33/69 and 39/73 respectively. I also found specs for the 640 and 640 MSL and that FELs dump/rollback angles are 15/39 and 38/80 respectively (a huge difference!).
Neophyte said:
I also read somewhere that although mechanical self-leveling linkage may increase lift capacity, it reduces rollback power. Perhaps this is why loaders still come without this option; so as not to reduce rollback power for digging? The increased lift capacity also explains why tractors with Self-Leveling loaders require more rear ballast than tractors with Non-SL loaders.
I wish I could have found 400x/400cx specs on lift, breakout, rollback numbers. For the 542/542MSL, using the same 800mm ahead of the lift pins specs in lbs., the numbers for lift, breakout, and rollback are: 2134/2381, 3884/4698, 5733/5305. For the 640/640MSL, the numbers are: 2424/3968, 4608/5575, 3844/4946. So, it looks like in general the MSL FEL beats the non MSL FEL numbers in all specs with the exception that the 542 beat the 542 MSL by about 400 lbs in rollback strength.
Neophyte said:
As far as I can tell, there does not seem to be much cost associated to this feature since the jump from 300x to 300cx and from 400x to 400cx are both around $500.
Note that the 300cx is NOT a MSL loader while the 400cx is. This difference has already been pointed out by other posts in this thread.
Neophyte said:
In case someone is interested, there is a video of the 400CX self-leveling feature in action here.
http://www.deere.com/en_US/groundsc...actors/twenty_series/twenty_series_video.html
I wish they had shown the MSL action while lifting the bucket load of dirt from the side for the full ground level to full lift height action. You do get to see the full MSL feature with the side view of the palate forks in action though.
I hope everyone can understand why I couldn't understand the reasoning behind the dislike of a MSL loader versus the same loader without the MSL option. Other than the additional cost, I see no downside whatsoever of MSL, especially since it is a passive system that just uses geometry to implement the self leveling action.
BTW, here is a thread on TBN discussing the 400x versus 400cx differences complete with pictures of the 400cx in action posted by a TBN member:
400x vs 400CX ... Help!
As for Hydraulic Self Leveling (HSL), I can see where some of the concerns pointed out here like simultaneous raise/lower and curl/dump could be an issue depending on how the HSL is implemented. By definition, HSL is using some form of hydraulic bleed off from the FELs lift cylinders to hydraulically adjust the bucket curl/dump cylinders as the FEL is raised and lowered. Actually, most of the HSL FELs I've heard of only level the FEL attachment while the FEL arms are being raised. However, I do remember running across an HSL system that does level for both the raise and lower operation.