New crane

Please stop POSTING IN CAPS.

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My old knuckleboom (Hiab brand, model 300-5 w/fly jib) started falling apart after only 3 yrs.!!! (it had been abused by the first owner) Every month or two i was spending several grand in repairs! My new crane has been doing great (4 years old) I'm hoping for 5-10 more years but if magna-flux tests show it's holding up, then i'll hang on to it as long as i can. Crane design engineers cringe when they hear tree & crane together! We definately have the toughest application for crane use! Hey Mark Chisholm, did Gus ever give a price on that 80 ton!? You would love it!
 

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IMHO, I don't see these Lg. Knuckleboom cranes with fly jibs holding up over time doing tree work. I'm sure they are great doing static pics but I'm not so sure they will hold up to the dynamic loading that is inevitable doing treework. Treework is hard on cranes and these knucklebooms have such small dimensions to their booms and so many joints between booms. I understand they are hi-tensile steel but I just don't trust it over time for tree work.
 
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IMHO, I don't see these Lg. Knuckleboom cranes with fly jibs holding up over time doing tree work. I'm sure they are great doing static pics but I'm not so sure they will hold up to the dynamic loading that is inevitable doing treework. Treework is hard on cranes and these knucklebooms have such small dimensions to their booms and so many joints between booms. I understand they are hi-tensile steel but I just don't trust it over time for tree work.

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Why do you feel straight boom cranes are better. Less pivot points? I am just trying to get your reasons so I can understand your point alittle better. Not trying to be argumentative.
Ive only had my knuckle a couple of weeks but have used standard boom trucks for a lot of years. Some of my sections are smaller but made with 10 sides and 1 piece of steel. There is only 1 weld per section and it is welded full length inside and out. My old crane is 2 pieces welded together.
 
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IMHO, I don't see these Lg. Knuckleboom cranes with fly jibs holding up over time doing tree work. I'm sure they are great doing static pics but I'm not so sure they will hold up to the dynamic loading that is inevitable doing treework. Treework is hard on cranes and these knucklebooms have such small dimensions to their booms and so many joints between booms. I understand they are hi-tensile steel but I just don't trust it over time for tree work.

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Why do you feel straight boom cranes are better. Less pivot points? I am just trying to get your reasons so I can understand your point alittle better. Not trying to be argumentative.
Ive only had my knuckle a couple of weeks but have used standard boom trucks for a lot of years. Some of my sections are smaller but made with 10 sides and 1 piece of steel. There is only 1 weld per section and it is welded full length inside and out. My old crane is 2 pieces welded together.

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Doing large picks with a fly jib is very hard on the cylinders and bushings. Obviously doing treework with a knuckleboom will require doing large picks with the fly jib and once again trees rarely offer static picks. I personally prefer the hefty booms and many less moving parts of a 23 ton and up stick crane, anything smaller than that is too small for treework. Less moving parts and heftier parts mean less problems down the road. Your rig is very nice, you being the only one running it and being smart will certainly keep it nice.
 
Maybe i should have been more specific in my previous reply when i said "my oldcrane started falling apart" i should have specified that it was parts like: slide pads, bushings, hose reels, hoses, extension cyls. The new generation Effer cranes have some serious Innovations! I saw major improvements in the PM brand (closed ends on extensions,etc) too! If the k-booms aren't abused they should hold up as well or better than straight booms.
 

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gday mate
great looking rig!just a question-does a knuckle boom of that size have computers to say what weight they are lifting or to tell you how much weight your putting on an uncut lift? i have seen people using smaller set ups,especially on a bit of barrell still standing,put too much grunt on the crane thus sending the log into orbit and bouncing.it looks dangerous for the person doing the cutting and the shake-up it gives the crane/truck couldnt be good for its longivity.with a big set up and same scenario, at those huge reachs i see your truck reach i would reckon there could be huge stresses on the crane.i have used various jib cranes and truck hiabs but have not used or seen a knuckle boom,im pretty sure there isnt one in australia.but that set up of yours looks awsome,multifunctional and in the right hands a big $$$ earner.thanks for any info
 
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