First drawing of the general arrangement.....
Download the drawings I made here. Its all I did, the rest just evolved while building :-(
almost ready machined cylinder blocks: bore 7mm, stroke 10mm, valve bore 2mm. on the bottom a valve is almost ready machined
ready machined cylinder blocks
a test engine, single cylinder
a test engine runs on compressed air
raw side frames milled out of 2mm brass, for a precise alignment the two frames have been soft soldered together prior milling and drilling.
frames - wheel set come of a bachmann 2-8-0 consolidation outside frame 0n30 model
detail: M1 screws holding the first frame spacer
all frame spacers added, cylinder mounted for test
detail front....
milling out the connection rod (0.5mm brass)
rod taken out of the milling jig, after some cleaning
...mounted on the machine
return cranks made of 2mm brass stock
return cranks mounted on the main crankpins
test of one cylinder
how does she look like with the boiler tube?...
return valve parts (rotary)
left: reversing drum (1mm steam ports) right: valve body, 8x8x8mm brass
return valve fitted between the cylinders
test of return valve
test cut of the wooden cab - have to adjust the parameters a bit....
before soldering the boiler a mount on the frame has be to checked out...
the wooden cab fits onto the machine
soldered boiler attached to the machine
look into the cap
sitting on workbench - tender construction start