The Bolton -Bertinat -Bailey Triple expansion engine

[crueby]

Sorry to hear that Willy, hope you feel better soon!

[Admiral_dk]

Never happened to me - but a good number of my Family had similar problems back during the endemic 

Hope that you won't be affected for much longer 

Per

[steam guy willy]

So, Back in the WKSP and have been milling out the standards to reduce the weight from 300 gms to 203 gms . so still more weight to lose !!  spending quite a lot of time in the allotment and also needing to water as we have only had half an inch in the past two months, so where did all the Aprill showers go??!!!

Willy

[crueby]

So, Back in the WKSP and have been milling out the standards to reduce the weight from 300 gms to 203 gms . so still more weight to lose !!  spending quite a lot of time in the allotment and also needing to water as we have only had half an inch in the past two months, so where did all the Aprill showers go??!!!

Willy

The rain is over here the last few weeks! Been waiting for dry weather so the roofer can get started on my house. I'll  try and send the rain back to you!   

[steam guy willy]

So, Back in the WKSP and have been milling out the standards to reduce the weight from 300 gms to 203 gms . so still more weight to lose !!  spending quite a lot of time in the allotment and also needing to water as we have only had half an inch in the past two months, so where did all the Aprill showers go??!!!

Willy

The rain is over here the last few weeks! Been waiting for dry weather so the roofer can get started on my house. I'll  try and send the rain back to you!   

Ok thanks ..cheers
willy

[steam guy willy]

I have now started on the condenser parts  there are the two Bronze cast ends and the two Brass tube plates.  The cast end covers are faced off in the 4 jaw independent chuck. the castings are then filed to shape and the holes for the bolts are marked out and centre popped then the archemedes drill is used to accurately position the holes and enlarged to position the drill correctly. The achemedes drill is used to accurately position the hole by leaning it over slightly unlike the drill in the chuck that is fixed centraly upright.

Willy
 

[steam guy willy]

I have made a perspex holder to drill the holes in the cover plates and then drilled through for the tube plates. these were bolted together and filed to size. the type plates will thence filled for the 1/4" copper tubes ...
Willy

[Michael S.]

I think a lot of work went into this component. And all those screws!

But you're making good progress.

Michael

[steam guy willy]

Have now been machining the condenser casting to take the end caps ..this is achieved on the Myford and uses the screw cutting feed with the end calibrated feed screw to take off .004" at a time . the travel has a spring device to take up any slack in the feed screw to keep the feed tight.
Willy

[Charles Lamont]

Using the leadscrew for depth of cut means you can't take advantage of use your power cross-feed for fly-cutting the face. If you had a micrometer depth stop you could. https://www.modelenginemaker.com/index.php/topic,11700.0.html post#7

[steam guy willy]

Hi Charles , yes I can see what your saying  and to get a steady feed from the cross slide I grip the handle with both hands and press them against my body and then turn the handle with a steady rocking action to get a steady controlled feed  ?!!!
\cheers for looking in
Willy

[steam guy willy]

Back in the WKSP and I have made the endocarps for the condenser although there needs zealot of fettling tone done .. I have used the small drill sharpening tool to dill and tap the 60 odd 7BA holes for the bolts and screws ?!!!!

Willy

[crueby]

Thats a neat looking assembly! And a lot of holes to drill and tap!

[steam guy willy]

Thats a neat looking assembly! And a lot of holes to drill and tap!  Thanks and yes there are about 300 nuts and bolts on this engine ???!!!
Willy

[steam guy willy]

The condenser end plates have all been drilled and tapped 7BA  with no breakages ...!!  i use the resistor colour code to quickly identify my drills and tools etc... so...Purple is the colour for 7 and Green is the colour for 5 ... this is quite helpful unless of course one is colour blind ??!!!   the next job is to install the condenser tubes these are actually soft soldered in place at both ends , rather than expanded as per steel tubes ...

Willy