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#Post#: 59034--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Stoker Date: December 2, 2023, 12:17 pm
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Those Stuart ST engines are great little runners!
#Post#: 59035--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: St Paul Steam Date: December 2, 2023, 6:13 pm
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smashing progress so far Tony.
#Post#: 59036--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Tony Bird Date: December 3, 2023, 4:20 am
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Hi,
The next job was to make a mount for the engine. It is the
first totally new part to be made for the model; previously it
has been just refurbishing existing parts. When scratch building
a copy of a Bowman Swallow knowing what a part looked like was
relatively easy as they only supplied ready to run and other
than minor modifications made by Bowman they all started off the
same. Also there are relatively plenty of the models still
around to copy.
The Stuart Turner Henley is totally different, it was available
ready to run, but each individual component was available
separately; the hull painted or not, the boiler and boiler
fittings, the propeller shaft and propeller, rudder shaft and
rudder and the engine was available ready to run or as a casting
kit. So this begs the question when is a Henley a Henley? The
factory made one, yes; but if home built; do all Stuart
components need to be used? Another problem is that there
doesn’t seem to be many Henley’s about to look at; at least I
haven’t found one yet.
Back to the build, photographs show that usually the engine
propeller shaft coupling is a coiled spring and the engine sits
on what looks like an aluminium plate held by screws to the
hulls longitudinal battens. Also photographs and drawing show
that the engine is at an angle so that it is in line with the
propeller shaft; though some photographs show quite a curve in
the coil spring taking out the misalignment.
Hopefully the photographs will show how the first attempt at
mounting the engine was archived. It might not be how Stuart
Turner envisaged it; but it will work. If further information
comes to light the engine mount might get changed.
Take care Tony.
[attachimg=1]
[attachimg=2]
[attachimg=3]
[attachimg=4]
[attachimg=5]
[attachimg=6]
[attachimg=7]
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[attachimg=9]
[attachimg=10]
#Post#: 59037--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: RedRyder Date: December 3, 2023, 1:08 pm
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Wow...!!!
#Post#: 59052--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Tony Bird Date: December 4, 2023, 9:42 am
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Hi,
The outside of the hull has been sealed, filled and has now had
four hand painted undercoats that were rubbed down after each
coat and it is looking reasonably good. It still needs probably
more coats of paint and rubbing down with some fine wet and dry
paper. Alas now in early December in Old South Wales it is cold
and damp, not good for spraying the final top coats. So the
hull has been hand painted with a white top coat until the
spring when I can sit in the garden with a bowl of warm slightly
soapy water, wet and dry paper, and the hull. Also hopefully
the temperature will be more contusive to spray painting in the
garage.
Back to a wet December; coupling the engine to the propeller
shaft, a helical spring seems to be the usual coupling, but
photographs of other types of probably replacement couplings
have been seen. As the propeller shaft came with half of one of
these other types of coupling it was decided to make the other
half of it.
The couple made consists of a 36 mm disc of 2 mm brass sheet
hard soldered onto a 10 mm diameter boss that fits on the
engine’s crankshaft. The hole for the drive pin was marked out
from the original part of the coupling using a jig. Hopefully
the photographs will show how the coupling was made. The
coupling cannot be completed until the new paint on the hull is
hard enough to handle probably about a week. After which we will
find out if the measurements taken before painting were correct.
Until then something else will have to be found to play with.
Take care Tony.
[attachimg=1]
[attachimg=2]
[attachimg=3]
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[attachimg=5]
[attachimg=6]
[attachimg=7]
[attachimg=8]
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#Post#: 59118--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Tony Bird Date: December 7, 2023, 4:16 am
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Hi,
A bit of luck, I am now the proud owner of Stuart Turner boiler.
A swap was done with the owner of the boiler that was left with
me to copy. This is good as now the Henley will have all Stuart
Turner products even though they didn’t start life as a unit. It
is the correct boiler for the engine but it does not have the
fittings to hold it in the Henley hull, which is no big problem.
But before starting work on the boiler, a bit of a disaster on
the coupling front, when the engine was run on air the coupling
wobbled a lot, far too much to work well. The engine had been
overhauled years ago and never used, what had been forgotten was
that the threaded end of the crankshaft had a sleeve screwed
onto it. This sleeve though reasonably concentric for use with
a usual type of coupling, having a 38 mm diameter disc on it
accentuated its errors. So, it was plan ‘B’, the hole in the
coupling was plugged and drilled for 7 BA. Everything went well
and running the engine on air little or no wobble of the
coupling disc was visible. A short video can be seen at:
(HTM) https://youtu.be/s4jkU8Avkck
The boiler was missing its funnel so some sums were done to see
what size copper tube would be needed to make one. Having
decided on the size tube that was needed, a length was cut, this
length being decided by using the proportions of a Stuart Turner
advertisement for their boiler. The tube had its ends machined
square. The tube was then annealed and squeezed in a vice
roughly to shape before being finished using a round and square
wooden formers and a leather mallet. The result was quite
pleasing and hopefully the photographs show how it was achieved.
Take care Tony.
[attachimg=1]
[attachimg=2]
[attachimg=3]
[attachimg=4]
[attachimg=5]
[attachimg=6]
[attachimg=7]
[attachimg=8]
[attachimg=9]
#Post#: 59141--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Tony Bird Date: December 8, 2023, 11:24 am
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Hi,
Before taking the boiler apart to work on it; the burner was
refurbished and tried out. A bit of a video at:
(HTM) https://youtu.be/h25qej22QN0
The boiler was removed from its casing and the water tubes and
steam pipe were annealed and tided up. The boiler then spent
overnight in a citric acid pickle bath to clean it. After the
annealing and cleaning it was found that the nipple on the end
of the steam pipe had been soft soldered on, so it was removed
and a new nipple was made which was hard soldered in place. As
work had been done on the boiler and given its age and a bit
battered condition it was decided to do a boiler test. Stuart
Turner advertisements stated that the boiler had a working
pressure of 30psi, so the test pressure was times 2, which set a
pressure at 60psi, well just a tad more which then had to be
held for 10 minutes. There were no problems and the boiler was
left under pressure to see how much it had dropped by the next
day.
Take care Tony.
[attachimg=1][attachimg=2][attachimg=3][attachimg=4][attachimg=5
][attachimg=6][attachimg=7][attachimg=8]
#Post#: 59144--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Stoker Date: December 8, 2023, 2:55 pm
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Fully awesome work as usual Tony.
I do realize that hard solder makes a much stronger and higher
temperature joint, but at that nipple's location, away from any
flame and only likely to experience steam temperature, I would
think that a soft solder joint would work just fine. Am I
missing something, or are you simply being certain that
everything is done as right as rain?
#Post#: 59149--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Tony Bird Date: December 9, 2023, 2:42 am
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Hi Daniel,
"I do realize that hard solder makes a much stronger and higher
temperature joint, but at that nipple's location, away from any
flame and only likely to experience steam temperature, I would
think that a soft solder joint would work just fine. Am I
missing something, or are you simply being certain that
everything is done as right as rain?"
A soft soldered nipple would be more than adequate and possibly
originally used by Stuart Turner. It would have been left had
the solder not boiled during the annealing process. The nipple
was hard soldered as it is my default when soldering all boiler
fittings, possibly because in the days of gainful employment I
rarely used anything else.
Have a great Christmas and a Healthy New Year.
Take care Tony.
#Post#: 59151--------------------------------------------------
Re: Help with a Stuart Turner Henley
By: Stoker Date: December 9, 2023, 8:32 am
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Thank you for the detailed reply Tony ....... "Right as Rain" in
your usual fashion, which is why I enjoy, while often also
learning, by watching your threads!
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