[modeleng] Re: Valve Problem
- From: "Clif Walker" <clif.gwr@xxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Tue, 26 May 2009 19:23:43 +0100
Hi All,
I have never trusted vertical slide valves which can fall away from the face
and have always fitted S/S springs between the bridle and the valve.ie on
Pansy etc.
Regards
Clif
----- Original Message -----
From: "Barrie Purslow" <bpduo@xxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Tuesday, May 26, 2009 10:23 AM
Subject: [modeleng] Re: Valve Problem
> Hi Bede,
>
> Yes, I would have a few quid on you having got some debris underneath the
> seating face of one or both slide valves. Regarding a possible solution to
> the problem - I have never tried this myself but I think it is worth
> putting
> an airline onto the blastpipe. This should lift the slide valves and,
> hopefully, clear away the debris unless, of course, the debris has become
> embedded in the seating faces.
> The only other solution I can think of is the one you mentioned - a
> stripdown. These sort of jobs are usually not quite as bad as the thought
> of
> doing it and you invariably sort out a few other potenetial problems along
> the way.
>
> Good Luck!
>
> Barrie
>
>
> ----- Original Message -----
> From: <bede@xxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Tuesday, May 26, 2009 3:27 AM
> Subject: [modeleng] Valve Problem
>
>
>> Hi All,
>>
>> Looking for help troubleshooting my Martin Evans' "Conway", 3.5"
>> gauge narrow gauge 0-4-0.
>>
>> Tried to steam the loco over the weekend and it raised steam ok to
>> working pressure (80psi), but when I opened the regulator/throttle, the
>> steam just whooshed directly up the blast pipe, no power to the
>> cylinders at all in either direction, tried pushing the loco back and
>> forth, but no luck.
>>
>> I have to admit that I did an idiot thing- the smokebox was full of
>> cinders and ash and my steaming buddy and I took the lazy way out and
>> tipped the whole engine upright to dump the debris out. I'm thinking
>> now that this somehow caused one or both valves to become unseated which
>> resulted in the steam just going straight out the exhaust port. This
>> loco has outside cylinders with the steam chests inside the frames,
>> Stephenson gear with the slide/D valves vertical against the port faces.
>> But I can't imagine the valves coming away that easily, esp. as
>> they're vertical...
>>
>> Any suggestions on what steps to take to remedy this, I really hope I
>> don't have to strip the loco down...
>>
>> Thanks,
>> Bede in breezy Brooklyn
>> MODEL ENGINEERING DISCUSSION LIST.
>>
>> To UNSUBSCRIBE from this list, send a blank email to,
>> modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject
>> line.
>>
>
> MODEL ENGINEERING DISCUSSION LIST.
>
> To UNSUBSCRIBE from this list, send a blank email to,
> modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject
> line.
--------------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.339 / Virus Database: 270.12.39/2133 - Release Date: 05/25/09
08:16:00
MODEL ENGINEERING DISCUSSION LIST.
To UNSUBSCRIBE from this list, send a blank email to,
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.
Other related posts:
