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  1. #1
    Silver Member NCMau's Avatar
    Join Date
    Nov 2009
    Posts
    209
    Location
    NC
    Tractor
    MF 202/Ford 8N/JD425

    Default Side Sickle Bar Project

    I am in the process of making a vertical sickle cutter attachment for my tractor. I am using a modified transmission and a 42" bar from a Gravely walk-behind tractor. This bar will be mounted in front of the loader arms and driven by a hydraulic motor.

    Since I recently modified the tractor with a PTO pump to drive the loader, I will be using the on-board pump to drive the sickle. The hydraulic fluid will be supplied by the existing tractor selector valve, which I no longer use.
    Just today I made a temporary connection from this valve to the sickle bar just to determine if it is compatible with I have.

    The on-board pump is probably 4 or 5 GPM, the motor which I have on hand has a max of 15 GPM and a speed of 750 RPM. With this "with no load" setup seems to operate just fine. The 3pt lift is out of the operation and I can control the speed fro 0 to max with the position control.

    I was planing to get a flow control valve but with this setup, I don't see why I would need it, unless it is for the reason that the flow control valve would have a built-in PRV. But then again, the on-board has a PRV and the sickle motor is the only device operated by the pump.

    So, what do you guys think? Is this control valve really necessary?

    I will post this project when it is completed.
    Last edited by NCMau; 09-29-2012 at 03:51 PM.
    The Arc was built by a DIY team. The Titanic was built by professionals... you figure!

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