Avant 528 with log grappler

As you can see this attachment can be used for different purposes- in first video there was clamshell bucket attached to that, now it's changed to log grappler- as hydraulic pipes to the rotor are attached using quick release connections 3/8" then I can switch from bucket to grappler in less than minute. In this video you might notice that rotor is responding too quickly to commands therefore now I have added flow decrease valves on pipes which are turning rotor itself- it just reduces the turning speed but doesn't have any impact on its power as hydraulic pressure stay's the same. I have plan to check whether it is able to drive an auger (like 120-150mm)as well, just need to get it somewhere.

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Avant 528 with clamshell bucket
This is the one of few upgrades which I have made so far for my Avant 528 but it is the first one which I decided to share with you. In general Avant is good tool but at the same time manufacturer can't guess any customer needs upfront, and this is exactly the case. I have quite a long ditch which time by time requires to be cleaned. As mainly it has sludge there then it is quite impossible to do it with spade therefore I decided to make additional tool for my Avant in order to deal with that- and here is result. Mechanical part was an easy one- bought 60L clamshell bucket, welded main frame for that (1500mm long 80X80 steel tube, with its wall thickness of 8mm). The problems started with hydraulic- all Avants (at least 500 series) have just one pair of hydraulic outlet which doesn't allow to operate bucket and it's rotor at the same time therefore I did its upgrade to two pairs of outlets using solenoid valves. The second thing which isn't available for 500 series Avant is option to control its auxiliary outlets with joystick (despite such option is available for 600 series and above)- therefore I bought joystick itself (called joystick 8 functions)from my Avant dealer and using appropriate relays created control unit for that- was quite a difficult task but result is excellent and I'm really proud of that.





Minilæsser Staldkat - Halm opsamler
Her er den nye halm opsamler som Sorring Maskinhandel har fået lavet. Den samler lyn hurtigt halm op og Aflæsser det ligeså let igen.





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Optimal 760 an Avant 745 www.opitz-optimal.com





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