[modeleng] Re: Parts prices
- From: "Clifton" <clif.gwr@xxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Thu, 27 Sep 2012 10:34:02 +0100
Hi Jesse,
I assembled the steam cylinder together with the valve gear & worked the
first slide valve rod manually.
If the valve gear had worked the piston rod should have done it's bit.
Despite it's small size I have now had it to bits so many times I can now
almost take it apart in my sleep.
Clif
----- Original Message -----
From: "Jesse" <fernj1@xxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Wednesday, September 26, 2012 9:06 PM
Subject: [modeleng] Re: Parts prices
> Blimey Clif,
>
> 'Ow yer expect the bloody pump to work if it ain't assembled!!!!
>
> Jesse in warm Troy, TN
>> Hi Jesse,
>>
>> I will take a photo but it will be of the pump loosely assembled. As I
>> have
>> never got the steam cylinder to work I have never totally put it all
>> together.
>>
>> Regards
>>
>> Clif
>>
>>
>> ----- Original Message -----
>> From: "Jesse" <fernj1@xxxxxxxxxxx>
>> To: <modeleng@xxxxxxxxxxxxx>
>> Sent: Wednesday, September 26, 2012 5:35 PM
>> Subject: [modeleng] Re: Parts prices
>>
>>
>>> Clif, just for the heckofit, send me a photo of that Southworth pump.
>>> Never heard of one and would like to see a pic. Many thanks,
>>>
>>> Jesse fernj1@xxxxxxxxxxxx
>>>> Clif,
>>>> There was one of the full-size pumps that used a shuttle valve as you
>>>> described.
>>>> Not sure why yours doesnt work.
>>>>
>>>> Never having seen or played with one, I cant offer any suggestions
>>>> though.
>>>>
>>>> Alan
>>>>
>>>>
>>>> On 25/09/2012 17:57, Clifton wrote:
>>>>> Hi All,
>>>>>
>>>>> On Duplex pumps I have been building one of the Southworth steam feed
>>>>> pumps,
>>>>> the little 3" high one& it is driving me round the twist.
>>>>>
>>>>> On a full size pump it is usual to have a rocking arm to transpose the
>>>>> down
>>>>> motion at the end of the piston rods travel to an up motion of the
>>>>> steam
>>>>> slide valve to make it double acting. (& vice versa at the top of the
>>>>> stroke). This little beast uses a slide valve which via steam passages
>>>>> operates a shuttle valve which then moves the main steam valve in the
>>>>> opposite direction.
>>>>> As the whole pump is only 3" high you can imagine the size of the
>>>>> steam
>>>>> chest which has two slide valves& a shuttle valve in it.
>>>>>
>>>>> I have now spent about a week trying to get it to work including
>>>>> making
>>>>> three news sets of slide valves& a new port face. I have trued to
>>>>> slide
>>>>> valve faces& port face using engineers blue& as far as I can see it
>>>>> is
>>>>> perfect.
>>>>>
>>>>> But will it go, will it heck!
>>>>>
>>>>> I think a bit of redesign is going to happen to get a rocking arm in.
>>>>>
>>>>> Regards
>>>>>
>>>>> Clif
>>>>>
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>
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