[Spridgets] Master cylinder

[miniac7 at aol.com]

I'm just totally confused by this...in one place you say....

larger cylinder = more fluid with less pressure,  and in the other place you
say:
larger cylinder = less travel with more effort

You also state:

smaller cylinder = less fluid with more pressure, and in the other place you
say:
smaller cylinder = more travel with less effort

Please dumb this down even more for me so I can comprehend.

Thanks,
Howard








-----Original Message-----
From: Lester <oldsaabguy at comcast.net>
To: Joe Lansing <kidjoevid at yahoo.com>; Spridgets Group
<spridgets at autox.team.net>
Sent: Wed, Aug 3, 2011 4:01 pm
Subject: Re: [Spridgets] Master cylinder


You have two things to consider with hydraulics:
1. The volume of fluid that must be moved and
2.  The pressure needed.
So...
larger cylinder means more fluid (per travel inch) but less pressure  (Your
oot pressure over larger surface area = less pressure)
smaller cylinder means less fluid  but more pressure
The fluid moved needs to be the distance the clutch slave cylinder needs to
ove by it's bore.  This volume changes depending on which size cylinder you
ave.
So, in general, a smaller cylinder will give you more travel and require less
ffort and a large cylinder will give you less travel and more effort.
Lester
.. see, I gave you all sorts of info that wasn't helpful!  ;-)


n Aug 3, 2011, at 6:26 AM, Joe Lansing wrote:
> I can't get my Rivergate clutch slave set correctly. It really seems like I
on't have enough throw. So my simple mind is asking - "Which master cylinder
rovides more throw? A 3/4" or a 7/8?" Did my '62 have a 3/4" of 7/8"? I think
 now have a master out of a 65...

 Any guidance you can offer?

 Joe
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