[PSUBS-MAILIST] hydraulics

[Alan]

What Americas cup catamarans Brian? 
Do you mean the Emirates Team NewZealand boat that is 8-3 up against Oracle Team U.S.A.?
Alan

Sent from my iPad

On 21/09/2013, at 1:26 PM, "brian" <brian at ojaivalleybeefarm.com> wrote:

> Have you guys seen those Catamarans in the America's cup ?   Quite amazing.  They use the hydraulics to move the foils up and down as well as moving the "sail" or more correctly the wing.  It's all they can do to keep up the hydraulic pressure for the constant adjustments that have to be made.
> 
> Brian
> 
> -----Original Message-----
> From: "Alan" <alanlindsayjames at yahoo.com>
> Sent 9/21/2013 2:25:24 AM
> To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] hydraulics
> 
> Just did a quick google & there are hydraulic rim bicycle brakes as well as the disc brakes.
> These look like they could be possibly adapted.
> http://www.bikerumor.com/2013/04/15/sram-hydro-r-hydraulic-road-rim-disc-brakes-unveiled-details-first-rides/
> Alan
> 
> 
> 
> Sent from my iPad
> 
> On 19/09/2013, at 9:34 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:
> 
>> Hi Alan,
>> After some more thought, I have changed my mind about bicycle brakes.  The problem is the caliper has a rather large piston area.  This gives you better brake force, but it would hurt you when you put water pressure against it.  You want a small piston like a hydraulic clutch in a car.  I would use the clutch parts because they would also be aluminum and much tougher.  You would need to remove the piston and machine an o-ring  glove because the normal seal is designed to push in one direction only.
>> Hank
>> From: hank pronk <hanker_20032000 at yahoo.ca>
>> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>> Sent: Thursday, September 19, 2013 4:21:36 AM
>> Subject: Re: [PSUBS-MAILIST] hydraulics
>> 
>> H Alan,
>> Bicycle brakes would probably work quite well because they are made from very good material. 
>> Hank
>> 
>> From: Alan <alanlindsayjames at yahoo.com>
>> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>> Sent: Wednesday, September 18, 2013 11:55:49 PM
>> Subject: Re: [PSUBS-MAILIST] hydraulics
>> 
>> Hi Brian,
>> I've wondered about this also.
>> I was looking at the hydraulic brakes they have on bicycles now days &
>> wondering if you could adapt them for functions like releasing emergency
>> bouys or similar.  The manual hydraulics they have on boats, like steering units
>> are pretty expensive. Would be good to find something of suitable material
>> off the shelf hat could be used.
>> Alan
>> .
>> Sent from my iPad
>> 
>> On 16/09/2013, at 5:28 AM, "brian" <brian at ojaivalleybeefarm.com> wrote:
>> 
>> > I wonder if those human powered hydraulics could have an application for our boats, like the cats in the America's cup.
>> > 
>> > Brian
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