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On 26 Jun 2005 at 22:15, Dave Hall wrote: > While I appreciated that the longer a hose is the less water flow there will be > for a given pressure due to surface friction etc, I reckon the rate of flow > through a restricting nozzle will be different if the hole is smaller, and with > the pistons moving a mm, there's a significant fluid movement through a > restriction. I can't see why they bother to specify the outlets to use for the > calipers and the ones for the brake-light switches if it makes no difference. That's all very logical and makes sense, but I really don't think that they do it for any real reason. I suspect that it's just their standard practice. There was a time when disk brakes first came out on VWs that tandem MCs for cars with disk brakes and tandem MCs for cars with 4-wheel drums were made differently. One of these (I forget which) was marked with a blue band of tape around the MC, and we were warned not to mix them up because they had different sized drillings in some of the holes. Now, we have MCs which have the same drillings for both disks and drums and VW no longer makes any notice of it. I think someone there just realized that it made no difference. It wouldn't be the first time that VW made a design engineering error and corrected it after a couple of years. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~