December 31th she did the first lap under her own steam. This is a big step after getting just a few metres on December 26th.
Niagara falls have been removed from the backhead, other minor jobs have been completed.
(And new jobs identified of course)
Next on the list:
- engine pump is not reliable, sometimes it delivers water to the boiler, sometimes not.
- a proper blowdown valve is needed
- the blower is too weak, even at 50psi it cannot hold the fire alive.
And here´s what you might have been waiting for:
- Dr. Bond of the DVLR
- Retired Director
- Posts: 4481
- Joined: Tue Jun 09, 2009 9:43 pm
- Location: Suffolk
Looking forward to the next up dates.
The railway which people forgot
I spent the last workshop sessions building the brake gear.
Took a few tries to get the lever dimensions right.
The handwheel is a Wilesco spare part.
As soon as the weather gets better I will have another test run.
Hopefully I will be on board the train this time.
Draughting has been worked on. Blower power has been improved.
Last time the blower was too weak to hold the fire, even while the engine was not running.
The water pump is reliable now so I be able to get a few laps with driver.
That´s the good news.
There still is an issue with draughting. Even at standstill using the engine blower or the electric blower I cannot get the pressure above 25 psi.
As boiler and smokebox are one piece there is no leak there. The smokebox door also seals nicely.
The firedoor also seals well.
The suspect in this case is the grate. Bars are 3mm diameter with just 1.5mm gap between them.
I will make a new grate for the next test.
- Old Man Aaron
- Trainee Driver
- Posts: 762
- Joined: Wed Oct 19, 2016 11:08 am
- Location: Sunshine Coast QLD, Australia
Aaron - Scum Class Works
the spacing is always a bit trial and error.
I use Anthracite coal.
My LBSC Titfield Thunderbolt and my Maxitrak Swallow have had issues with clinker.
A wider spacing of the grate bars solved this problem.
I will just make another grate for 807 and try again.
it´s always a long way to get all components in this line to match.
Firehole door (top air), grate, flues, smokebox tightness, blastpipe, blower assembly.
In this case I am quite sure that the grate is to blame.
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