REFLECTOR: Hydraulic Pump Leak..fluid levels
Jeff Clough
jclough at gci.net
Tue Dec 14 00:46:05 CST 2004
...so guess our hydraulic system is set up a little backwards as the
retraction of the cylinders is when the gear is coming up and the most
power is needed......I suppose there is obviously more reserve hydraulic
power than needed so that this is not an issue....Mine works anyway!
Jeff Clough
Al Gietzen wrote:
> Subject: RE: REFLECTOR: Hydraulic Pump Leak..fluid levels
>
>
>
> You would think that, but remember that when the cylinders are
> extended, the
>
> fluid volume is the volume of the cylinder bore x stroke, when the
> cylinders
>
> are retracted, the fluid volume is the volume of the cylinder bore x
> stroke
>
> minus the volume of the rod(s) - so there is a significant volume
>
> difference- this type of difference is also taken into account in the
>
> calculations of cylinder power, since on the out stroke, you get full
> power,
>
> but on the return stroke, you do not, since you must subtract the rod end
>
> area from the total piston area.
>
>
>
> All true. The difference is about 6%.
>
>
>
> Al
>
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