Photo Gallery

Clicking on the thumbnail will show you a larger image

Photos have been taken at most stages and of most machining operations.

Contact me by email to see a particular detail.

Updated 21 April 2003

The Casting Set

The columns,4.5kg of 1.5"mild steel bar turned down to weigh 1.2kg

Boring the HP Cylinder

Note the extension for the boring head

Pistons, Piston Rods and Crossheads

Connecting Rod, upper bearings and wristpin

Progress at July 2001

Top View

Note the altered cylinder cover stud location so that the cylinder drains do not open onto the studs

Progress at November 2001...all the up and down bits

Side View

Looking up under the cylinder block

MkI Crankshaft Components

MkI Crankshaft

Crankshaft fitted in engine

Boring the big ends

The up and down components, HP

Boring the main bearings. Only numbers 1 & 5 were bored in this fixture, the others were line bored as shown in an adjacent photo

Line boring the main bearings...an interesting setup!

Progress as at 10 May 2002

The engine is driven by an electric motor under the bench at 310 rpm...magic!

The IP receiver. Modified to increase the volume

Boring the eccentric straps

Eccentric straps pre & post machining

Boring the eccentric sheaves. Reamed to final size

Progress as at 8th August 2002. Engine has been run up to 400rpm with minimal vibration (It is not bolted down)

Main bearing oil reservoir lids

End view 8th August 2002

Big end bearing oiler. Fabricated from "squashing" a piece of tube and sawing in half lengthwise at an angle

End view 29.8.02

Quadrants. I "cheated" here and had them machined "outside" on a CNC machine. I regretted this decision (as they were not parallel by 0.002")

The machining jig for the quadrant gibs... I should have made one for the quadrants

Close up of the finished gibs in the jig

By the last one about 5 minutes work

Machining the quadrant pins for the eccentric rods. The picture shows an essential bit of tooling...the six post lathe stop

The quadrant assembly and a few of the 12 pins (+ 2 spares) The first pin took a few hours to set up, the last about ten minutes total

The valve gear mockup I used to measure regulator arm movement. This is the ahead position "as designed"

(See Problem Page)

The astern position "as designed". Note the drag links in the horizontal position

The 12 Drag Links

Wayshaft as redesgned

Moved 2 1/2" to port and down 3/8"

The wayshaft from above

Although this appears to make the engine wider it is actually the same width as the original design when it was running ahead

HP Valve Gear Complete

46 Machined Parts

34 Bolts

24 Nuts

32 Shims

The IP Valve Gear

Reversing Bellcrank

(Fabricated at this stage)

My Solution... significant offset, and excavation

The IP liner in the lathe, the HP liner ready for the mill

The HP liner just finished in the mill

The IP valve liner. Filing the ports square for both liners took all day, 3 hours to make the filing buttons and 2 hours filing.

The IP valve liner bore

Side on 11.5.03 Note the revised reversing wheel and the three tallow pots for secondary lubrication

The reversing wheel

12 turns from ahead to astern via a two start left hand 5/8" acme thread. A bronze and brass fabrication

The piston valve liners prior to shrinking in place. Set up under the mill quill just in case some pressure was required

The IP piston valve liner in place.

0.0005" interference, cylinder block heated up to 150 degrees C.

This gave 0.004" clearance and they "fell" in.

Progress at 19 August 2003

The engine has been disassembled, degreased and painted. Reassembly and final fitting is underway

The Feed , Auxiliary and Air Pumps

The pumps on the engine

The finished engine sees the light of day for the first time, omly 16 stairs to go

Half way up!

Under Steam

How the engine, boiler and engineer will fit in the boat

 

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