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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Hi-Flow Conversion
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<blockquote data-quote="skidsteer.ca" data-source="post: 25449" data-attributes="member: 307"><p>On a older model like a 642 you could likely up the ci of the cartridge and increase your std flow volume, so long as you have the hp in the engine to handle the load. However the whole point of 2 pumps is that usually you don't need high flow, and further if you directed all the flow though you valve body your boom and tilt speed would increase also, for better or worse.</p><p>For the sake of attachment that don't need hi flow and for keeping the boom cycle at the designed speed, the flow of the second hi flow pump is only directed to the aux quick couplers, then only there when hi flow is activated for the attachments that need it. Putting hi flow to a grapple or a 4 in 1 bucket would be a exercise in ex-aspiration, as the function would be way too fast. Though not as bad on a model where the aux spool is controlled by a manual linkage.</p><p> On the 753 etc with electric over hydraulic for the aux couplers it would truly drive you nuts, you would need a very restrictive fitting to control the speed of the cylinder and a lot of hp to push all the excess oil over the relief valve at max pressure, burning fuel and creating heat for nothing.</p><p>Ken</p></blockquote><p></p>
[QUOTE="skidsteer.ca, post: 25449, member: 307"] On a older model like a 642 you could likely up the ci of the cartridge and increase your std flow volume, so long as you have the hp in the engine to handle the load. However the whole point of 2 pumps is that usually you don't need high flow, and further if you directed all the flow though you valve body your boom and tilt speed would increase also, for better or worse. For the sake of attachment that don't need hi flow and for keeping the boom cycle at the designed speed, the flow of the second hi flow pump is only directed to the aux quick couplers, then only there when hi flow is activated for the attachments that need it. Putting hi flow to a grapple or a 4 in 1 bucket would be a exercise in ex-aspiration, as the function would be way too fast. Though not as bad on a model where the aux spool is controlled by a manual linkage. On the 753 etc with electric over hydraulic for the aux couplers it would truly drive you nuts, you would need a very restrictive fitting to control the speed of the cylinder and a lot of hp to push all the excess oil over the relief valve at max pressure, burning fuel and creating heat for nothing. Ken [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Hi-Flow Conversion
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