[modeleng] Re: Winson 14XX
- From: "Tim Rickard" <the_viffer@xxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Sat, 30 Oct 2004 21:47:50 +0000
Clif
You might have 15 thou clearance cold but less or none hot.
I never knew Winson could get within 15 thou of a measurement tho'.
Tim
>From: "Clif Walker" <clif.gwr@xxxxxxxxxxxxxx>
>Hi All,
>My Winson 14XX still has the ability to confound.
>Whilst sorting out it's steam tests and the blow from the valve gear there
>was always a "boink" whilst running.At first I thought it was a bigend and
>did find a bit of play in one.I fixed that but the knock was still there.I
>next checked the other big end,took up a minute bit of play in that but the
>boink still carried on.On checking again I found a bit of play in a little
>end,made a new pin for that but the noise still went on.
>Now at last I think that I have found it.
>Winsons design only seems to give about a total clearance of about 15 thou
>for the piston at the end of the cylinders.This has the net result that if
>the assembly of the piston rod to the crosshead and con rod to the big end
>is 7 thou out at either end of the stroke,the piston hits the end cylinder
>covers.
>I think that even the momentum of the piston or it bit of play in the
>bearings would also allow it to do it.
>I suppose that when I was testing the chassis on air,because of the noise
>from my compressor I did not hear it.
>
>Modifications are again in hand.
>Oh boy,am I getting good at taking this loco to bits.
>
>Regards
>
>Clif
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:
