Trent et all,
I'm no expert but I believe Steve is correct in his analysis. I bet a
larger dia sight glass would make a difference- I have less of a problem
with my 3/4" locos. A longer sight glass MAY help but usually, by design-
and wisely, the bottom of the sight glass should only extend to the safe
low point of the boiler water level. which could admit vapor to the tube
when the water is lower. Does a blowdown on the glass help if the loco is
stopped. I certainly have a problem on most of my 45mm gauge locos except
the Merlin Hunslet which utilizes the water tubes going to two plates --no
tube as such. OK Harry where are you? Wade into it!!
Geoff.
Hello Everyone,
>
> I would like to know peoples thoughts and/or experiences about eliminating,
>or at least reducing, capillary action in a sight glass.
> Would there be any advantage to having a larger diameter sight glass if the
>supply (water end) tubing was small (1/8") diameter? What about for the top
>(steam end) of the glass?
> My knowledge doesn't give me an answer one way or another. Just guessing, I
>would expect no real advantage to a larger sight glass if the rest of the
>system was not "up-sized" as well.
> Thanks in advance for your help.
>
>Later,
>Trent
>
>
>
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