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| Bunyan Strikers The Striker Tube is the heart of this system. The spinning Striker Tube encounters the high areas of concrete, sweeping the materials forward in a roll, gathering ahead of the Striker Tube. The Striker Tube rests on formwork, on temporary screed rails or on cold slabs. The spinning Striker Tube is trying to return itself back over the previous strike area. This easy return allows aggressive cuts into the delivery area, then quickly running back out of the way. Placement functions are usually working directly in the delivery area in short aggressive bites. Screeding functions are longer runs with a smaller cut of finer material. |
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| The Bunyan Striker is powered by a hydraulic system. The Driver Handle couples to one end of the Striker Tube. This provides the operator control of the Striker Tube rotation. The Cold Handle is a pull device for the non-driven end of the tube. Operators manually pull the tube against the rotation, drawing the tube over the slab surface. |  |
| The gasoline powered Striker features the Honda GX340 series engine supplying power to the Driver Handle. The Driver Handle is equipped with a hose leader suited to the desired range. Normally, a 40 foot hose leader is enough to keep the Hydraulic Pump Unit available to the work area. Some prefer to locate the Hydraulic Pump Unit in a remote location, up to 100 feet away. |
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| The Bunyan Striker is most convenient with the self-contained drive system. If other equipment is on site and available to the slab area, operators may choose to power the Driver Handle from auxiliary hydraulic connections to a skid steer loader or backhoe. If this equipment is not as portable as the Bunyan Series SH pump unit, a longer hose leader should be selected; at least 60 feet in length. |
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| Tube Service Bunyan Striker Tubes do not wear out in the middle. Tube wear occurs in the last few inches of the end as the wall of the tubing wears thin. Tube service is usually a matter of cutting away the worn part of the end and reinstalling the end plates at a shorter length. Straightness is also an issue in tube maintenance. Minor correction in straightness is easily done at the jobsite. But if tubes are abused or transported improperly they may need damaged portions to be cut away and end plates reinstalled. |
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| Tube Options Bunyan Striker Tubes may be ordered in two ways. 1. Welded Striker Tubes. The ends are permanently installed with the axles ready to use. Extra weight is added by loading water inside the tube through ports in the end. |
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| 2. Premium Striker Tubes The ends are separate. End fixtures are easily removed, allowing the tubing to be serviced and configuration to be changed. Extra weight is added by loading sandbags inside the tube from either end. One pair of end fixtures may be installed in a selection of different tubes. It is more economical to purchase tubes without ends and tube service is more user friendly. |
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| On steep slope, the Striker Tube is drawn by a winch system, pulling upward as the Striker Tube spins downward. |  |
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| Bunyan Cross Rollers are used on pervious pavement to dress out surface flaws and provide slight compression to the surface. Connect to large diameter float handles. Available in standard and jointing configuration. |
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