Author Topic: Two inch Clarkson Vertical.  (Read 4137 times)

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Two inch Clarkson Vertical.
« on: September 17, 2020, 09:14:09 PM »
This is a brief intro to my new project.  The 2" Clarkson vertical with reversing gear. I have bought the drawings and a flywheel casting, the rest will be fabricated. I've made a start by chain drilling, sawing and filing the uprights....welding next (Wot no laser cutting!) I have also bought a set of castings /drawings for the Clarkson Steeple engine, although I am waiting on some missing items before I start that one.   The plan is to build them together to make for plenty of variety in my workshop. I have added a photo of the steeple castings although I hope a certain Su**us doesn't spot them ;)    Progress is likely to be slow so don't wait up!       Terry

Offline Johnmcc69

  • Full Member
  • ****
  • Posts: 701
  • Erie Pa., USA
Re: Two inch Clarkson Vertical.
« Reply #1 on: September 17, 2020, 10:03:15 PM »
 :popcorn:
  Got my ticket &  ready for the ride!

 John

Offline Woodguy

  • Full Member
  • ****
  • Posts: 117
  • Winnipeg, Canada
Re: Two inch Clarkson Vertical.
« Reply #2 on: September 18, 2020, 06:54:56 PM »
How big is that flywheel?

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #3 on: September 18, 2020, 07:50:00 PM »
The second pic is for the 2" vert and is approx 6" dia. The third pic is the steeple and is about 10" dia.  Hope that helps.      Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #4 on: September 18, 2020, 08:22:26 PM »
Off to a promising start, reminds me of when I made the Tidman organ engine.

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #5 on: September 19, 2020, 08:33:04 PM »
Next move on the uprights is to bend them. I have never had to bend cold rolled ms before only black hot rolled. Now then, do I need to use heat?
In the mean time started on the crank disc, found a nice piece of scrapbinium,  straight forward turning job and a pleasant change from  recent jobs,
   Terry

Offline Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 13959
  • Hampshire, england.
Re: Two inch Clarkson Vertical.
« Reply #6 on: September 20, 2020, 06:32:31 AM »
Next move on the uprights is to bend them. I have never had to bend cold rolled ms before only black hot rolled. Now then, do I need to use heat?

They look fairly thick so heating them will make them easier to bend. How did you bend the spokes on your traction engine?

Jo
Enjoyment is more important than achievement.

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #7 on: September 20, 2020, 07:15:51 AM »
If you have a reasonably strong vice then they will bend fine cold and without annealing. If you use the 3 point method and work your way along making many small bends it's quite easy to do. I shaped the front tyres on my Fowler this way and they fitted with almost zero gap between them and the ring.

What thickness material are you using? 5 or 6mm I would do in the bench vice but if less then the mill vice will work Ok and not get strained, also makes it easier to jig things so your bending points are at right angled to the curve. Unless you have a press available which is even better

This is the Tidman (3mm material) that I mentioned, two points provided by the vee block and the brass bar is the third, it's really just like a press brake and no burnt fingers.










« Last Edit: September 20, 2020, 08:09:21 AM by Jasonb »

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #8 on: September 20, 2020, 10:50:05 AM »
Jo,   On the Burrell they were standard bends, not gentle curves.  I used to have a VERY heavy machine vice which sat on the  floor as I could not lift it, one end of the spoke was held in the jaw and t'other end thumped with a big heavy hide hammer!.....sounds crude but it worked a treat.
Jason,  I'm using 3/16" plate which has had 2hours in t'oven at 220 before I started.  I "press" ahead with confidence :ShakeHead:
Thank you both for your interest.       Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #9 on: September 20, 2020, 10:51:46 AM »
Jason,   Just noticed the locating tabs on the Tidman...Nice.            Terry

Offline Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 13959
  • Hampshire, england.
Re: Two inch Clarkson Vertical.
« Reply #10 on: September 20, 2020, 11:21:04 AM »
I'm using 3/16" plate which has had 2hours in t'oven at 220 before I started. 

 :thinking: I would have gone for red hot for bending. As there are only two pieces heating with a propane torch would seem ideal.

Personally I have a hydraulic press so don't have to abuse my bench vice for bending :paranoia:

Jo
Enjoyment is more important than achievement.

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #11 on: September 20, 2020, 01:14:37 PM »
You should try it Jo only needs light pressure on my bench vicehandle to bend cold 5mm and the 3mm in the mill vice the weight of the handle is almost all that is needed as you are only making a series of very slight bends, it's not like trying to bend it 90deg.

Funny enough I first used this method as Malcom of MJ Eng suggests it in the Fowler building book and that was for the 3" engine which had 3/16" tyres same as being used here

It's not that hard to bend steel, there was a question on ME about bending some 3/4 x 1/8 at 20ishdeg and there were some most elaborate posts about heat treating, doing it red hot, making jigs, etc  that would have taken ages to type let along do I just went down to the shed and let the video do the talking.

« Last Edit: September 20, 2020, 01:21:44 PM by Jasonb »

Offline Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 13959
  • Hampshire, england.
Re: Two inch Clarkson Vertical.
« Reply #12 on: September 20, 2020, 01:36:08 PM »
It's not that hard to bend steel, there was a question on ME about bending some 3/4 x 1/8 at 20ishdeg

Terry is looking for a gentle controlled curve in a piece of mild steel that is 40mm to 75mm wide and 4.76mm thick.

I remain a fan of doing such things on my hydraulic press. You can also straighten things with it like Scaffold poles  :)

Jo
Enjoyment is more important than achievement.

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #13 on: September 20, 2020, 03:28:42 PM »
I know he is Jo and that is what most of my last couple of posts have been about, showing first hand experience of how I easily bent a double curve on what are very similar parts, no need for a heat proof former to bend it over and very easy to control the bends. I also said that if available a press would be the best way.

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #14 on: September 20, 2020, 04:06:35 PM »
Jason,   Just noticed the locating tabs on the Tidman...Nice.            Terry

Yes I added those to my drawings before sending off to be laser cut. But even just cutting parts myself I like to have some way to locate the parts together as it's easy when trial fitting but also a big help when clamping up to weld or solder as things stay where they should and in the case of soldering particularly less clamps needed so less metal to take away the heat.

Only needs to be a simple slot milled to locate the edge of a mating part, for example on those standards I would mill say a 1/16" deep slot down the middle of the foot, curved plate and top trunk guide plate so all three line up. may also drill and tap the inside edge of the foot so the curved part can be screwed to that.

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #15 on: September 20, 2020, 06:59:20 PM »
Thank you all. :ThumbsUp: :cheers:     Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #16 on: September 21, 2020, 08:05:16 PM »
Had some unexpected spare time today so  a little more progress made.            I milled a shallow locating slot in the back of the uprights to aid fabrication.   Some may have noticed that I do not make workshop equipment to look good :hellno:  and my home made press is no exception but it does the job! A quick cobbled up set up with a bit of scrap and  the uprights are shaped.  Thanks again for the advice......I don't know why I was apprehensive.       Terry

Offline Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 13959
  • Hampshire, england.
Re: Two inch Clarkson Vertical.
« Reply #17 on: September 21, 2020, 09:04:13 PM »
Looks cracking Terry: you have achieved a lovely smooth bend :ThumbsUp:

Jo
Enjoyment is more important than achievement.

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #18 on: September 21, 2020, 09:28:29 PM »
Thanks Jo

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #19 on: September 23, 2020, 09:07:59 PM »
Set up this simple jig to assemble the uprights.  Having put the press away I had to resort to the bench vice for a couple of little tweaks to ensure the upright's accuracy.    run out of time so welding next time.    A bit dissapointed to find so many glaring drawing errors on something that's been around some time. The upright's base fixing holes for a start.    Nothing major as long as you work it out before touching metal.           
Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #20 on: September 27, 2020, 08:38:40 PM »
We have mig / tig, etc at work but true to form things need to be done in my shed if at all possible. ::)   So I fetched out the old cheepo stick set and welded my uprights. They will look fine after the attentions of the Dremel and a bit of JB.  Before that the locating slot for the trunk guide needed milling.
As a break from the uprights I have been turning the flywheel, the bores for this and the crank disc have been reamed to finished size.   Next will be the crankshaft which will be turned to fit the bores....(better than doing it the other way round)            Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #21 on: January 01, 2021, 08:50:52 PM »
Well I have to say it's great to get back in the shed :)   My wife's ribbon business got busy earlier than normal this year so no spare time at all. We have been flat out since mid September! I almost feel guilty when so many businesses are suffering, but we have grafted with 14hr days, 7 days / week.            The Clarkson flywheel, crank disc and shaft are done, and the uprights just need a bit more tidying.  I have decided to fabricate the base next.  Jig-sawed from 3mm plate and edges cleaned up with files, I've angled the ends to look more casting-like. It will be screwed together with ally blocks and then welded. Blocks removed and holes welded up.
        With bad weather outside the shed is quite congested and involves climbing over stuff to reach scrapbin stock, etc. I hope to be continuing this build now at my usual "steady" pace :old:      Best Wishes to all.        Terry

Nearly forgot.....also making a cover for the Charlesworth

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #22 on: January 05, 2021, 07:24:49 PM »
More progress on the base "casting"   I will let photos explain as it is all standard fabrication. Used the old stick set again. Next job is to make/fix the wells for the crank disc and eccentrics followed by the pads for mounting thee works.       Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #23 on: January 08, 2021, 10:20:07 PM »
Base nearly complete,  ran fly cutter over top pads to ensure all level.  Just needs some tidying with files and then JB "fillets" adding.
I hope everyone is keeping safe.           Best Wishes                Terry

Offline crueby

  • Full Member
  • *****
  • Posts: 11722
  • Rochester NY
Re: Two inch Clarkson Vertical.
« Reply #24 on: January 08, 2021, 10:25:47 PM »
Base is coming out nice!  Someday I gotta go take a welding class or three...
 :popcorn: :popcorn: :popcorn:

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #25 on: January 08, 2021, 10:30:38 PM »
   I have to stick weld Chris, not enough torch capacity to silver solder or braze!     Mann wagon coming on great.            Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #26 on: January 09, 2021, 07:09:20 AM »
That's about two of the main fabrications out of the way now with just the trunk guide to go which should not be too bad to do.

Are the 4 pads just screwed/rivited or have you bonded them on? Should not make a lot of difference as they are really just decorative spacers with teh threads in teh main top plate doing the work of holding things together.

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #27 on: January 09, 2021, 10:42:04 AM »
Just screwed Jason, as you say the lot gets held together when the "works" are through bolted.       Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #28 on: January 14, 2021, 07:31:06 PM »
Next up are the main bearings.  Aluminium is not my favourite material but I had some the right size. I did most of the shaping with hacksaw and files which I find very satisfying. The 4jaw was set up on my little Clarke so made use of that.

Offline propforward

  • Full Member
  • ****
  • Posts: 921
  • MN, USA
Re: Two inch Clarkson Vertical.
« Reply #29 on: January 14, 2021, 10:45:26 PM »
Hey I really like your shop press! Great work all round I say. Very interesting build.
Stuart

Offline pieterb

  • Full Member
  • ****
  • Posts: 31
Re: Two inch Clarkson Vertical.
« Reply #30 on: January 15, 2021, 11:06:20 AM »
Those curves you bend are really nice. Only one question: on the picture 11 (close up of press setup) you have the 2 small tubes. Did you weld these to something? I tried something like this once and one tubes was suddenly launched into the shop. It rolled out when the press was under pressure. Scary moment for me then.... :thinking:

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #31 on: January 16, 2021, 06:57:47 PM »
Hi Pieterb,  No the tubes were not fixed, I too have had things "move" under pressure....some of us never learn :zap:
Pleased you like the press Propforward, I needed one and had no spare money to buy one, function comes before appearance. It continues to be very useful.

I finished the main bearings on the little Clarke lathe today.  The dial gauge is another "use what you have" quick fixes. 

The brasses will be made on the Atlas simply because the 3jaw is already set up.         Thanks for following      Terry   

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #32 on: January 17, 2021, 05:36:45 PM »
Apart from fillets, etc. the base is finished for now.  I have followed the drawing for mounting the bearing housings,  ie. the fixing bolts are tapped underneath. It seems odd as the drawing also shows protruding "feet" at both ends .   At the moment I have no material for the cylinder or trunk guide so will look at the drawings and see what parts can be made  from my existing stocks.  Up to now the only spend has been the flywheel casting. :)             Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #33 on: January 17, 2021, 06:10:57 PM »
Looking good

I think I would be tempted to add a couple of screws from below into the bottom halves of the bearing blocks. That way you can line them up and leave them in position and just remove the caps if you want to get the crank out. The "feet" can be found on other engines, my Tidman is similar and copied from full size.


Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #34 on: January 17, 2021, 08:16:50 PM »
Jason that is what I have done but obviously not explained it correctly.    The lower halves are tapped with 2ba screws fitted up through the base.

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #35 on: January 18, 2021, 09:55:44 PM »
Following an extensive search in my scrapbinium mines some material has been located for my cylinder and trunk guide :whoohoo:  Not the ideal choice but with careful choice of piston and crosshead material all will work well.            Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #36 on: January 19, 2021, 07:51:32 PM »
Extracted the metal for the cylinder and trunk guide :thinking: Trunk guide piece  machined to nominal od. then shortened on the home made saw. A shoulder was machined to locate the flange which is being cut from some plate and will be welded on prior to final machining.  I do not own a fixed steady hence the odd set  up to face the other end. The bore will initially be drilled and then bored before a final hone. Before that happens I need to decide how to attach the side mountings. I suspect they will screwed on.   Yes I know a casting would be easier but I'm not using them.              Regards to all             Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #37 on: January 23, 2021, 07:41:47 PM »
The trunk guide bore has now been drilled, done in stages up to 23mm, the largest drill that fits the 2mt tailstock.  I then milled a couple of flats on the sides to locate the mounting pads. These will be held with csk screws on the centre line.  Next came boring out to 1 1/4 ins. This was done from both ends due to short boring tools, the plan was to final bore at work on the big lathe after lockdown. However I found an old tool at the back of the shed that would do the job. (just)        While the lathe autofeed coped with lots of small cuts I made a start on the cylinder end cover.
made from some 1/4 in plate, this will also serve as the master jig for  the cylinder and trunk guides' 16 fixing studs.    The fun continues.......
               Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #38 on: January 25, 2021, 08:02:59 PM »
Drilled and tapped 4ba to locate the side pads then setup and drilled/ milled the side openings. Next  I will weld the top flange then back in the chuck to tidy up and face. I was going to weld the side pads but have decided not to. Apart from possible distortion it is not needed , as there will be ten studs tapped into the trunk guide to fix to the uprights.  JB weld will close the gaps on the side pad joints.
I have had a change of plan for the cylinder and have ordered some cast iron. This should make a better (and easier) job than the EN8 found in the scrap bin.         Terry

Offline Don1966

  • Full Member
  • *****
  • Posts: 6309
  • Morgan City, LA (Along the Gulf Coast)
Re: Two inch Clarkson Vertical.
« Reply #39 on: January 26, 2021, 02:37:02 AM »
Looking good Terry!... :ThumbsUp:


 :cheers:
Don

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #40 on: January 26, 2021, 07:47:38 PM »
Thank you Don,      I have now welded the top flange and faced it off.  Couldn't resist "resting" it in position  :)       I might leave this for a while now and get on with some other parts.              Regards              Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #41 on: January 27, 2021, 06:43:14 PM »
Started on the eccentrics, all standard stuff.    Set the offset on the mill using the dial readout.   Lacking suitable tooling I had to remove from the mill and set the drilled centre in the 4 jaw and drill/ ream on the lathe.   Drilled for grubscrews, just need tapping now.         Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #42 on: January 28, 2021, 07:06:33 PM »
Postie brought some cast iron today :)   As a result I have made a start on the cylinder assembly. Plan is to make the bottom cover first, part off, make top cover, part off, make cylinder.  I will continue to post on this build but I am aware that it is a simple engine and my set-ups are basic to say the least :embarassed:  However I am having fun and still cannot believe how much time I am able to spend in the shed.  What a great hobby we share,            Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #43 on: January 29, 2021, 07:26:48 PM »
Cock-up time   :cussing:   Parting off the bottom cover  and broke my last parting tool. The solution was to turn the material around and machine it parallel on it's full length.....it then fitted in the saw vice.   Only then did I notice that I had drilled the gland aperture full depth  :facepalm:
I decided to thread right through and turn a small recess on the inside face. I will then make a short threaded bush with a small collar to fit the recess. loctite and careful peening should fix it and still allow the gland nut enough room on the outside.  Back to the hacksaw next to cut off the top cover leaving a just overlength lump for the cylinder. That should provide some entertainment.  :Lol:             Regards           Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #44 on: January 29, 2021, 08:12:17 PM »
Quite prototypical to have a "neck bush" in the cover  :)

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #45 on: January 30, 2021, 07:15:33 PM »
You are absolutely correct Jason, all our big engines at work have them. Silly of me to not think of that :old:  One neck bush now made and fitted. The bore was machined with the bush in the cover to ensure it's concentric.            Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #46 on: February 02, 2021, 07:49:43 PM »
Time to start on the cylinder.  Not wishing to waste material I decided to remove the core by drilling.  I seem to remember Andrew doing something similar some time ago.  Apart from scribing a guide line on each end it was all done freehand.  Cylinder held in the 3 jaw from my long gone Colchester and using a 4mm drill carefully positioned by eye.  Drilled half depth then repeated from the other end. A little  work and I have my cylinder ready to bore plus a nice piece of iron for future use.             Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #47 on: February 04, 2021, 08:31:50 PM »
Bored the cylinder cautiously yesterday, I'm quite pleased with the result. Machined to final length and finished both ends. I tack welded a spare boss to the chain drilled top cover to enable it to be chucked and machine the top face. Removed the boss, turned it around and machined
 the  inside spigot. Both covers now fit nice on the cylinder.
I decided to finish machine the trunk guide at home rather than wait until I'm allowed to go to work and use the big lathe. The result was a nice finish but with a 2thou taper :(    I got out the brake cylinder hone and gently tickled one end. It worked ::)    Perhaps unconventional, but needs must!  next bit is the crosshead.......or perhaps the port block....or perhaps the cylinder cover studs :thinking:     While all this was quietly going on the hacksaw was cutting the material for the port block.  The resulting loud bang when the offcut dropped unexpectantly raised the old heart rate for a moment :o          Few comments but steady increase in the view count.....Thanks for looking in.             Terry   

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #48 on: February 06, 2021, 07:24:43 PM »
This forum has taught me a lot :happyreader: For  instance  when making a part I would cut a piece of material just a bit oversize and then start machining, etc, I now leave the part on parent metal to do most of the work, parting off at the end,  holding problems greatly reduced. :ThumbsUp:  Thank you Forum members.

The crosshead has been a good example....the pics explain. Not having got round to a Z axis readout on the mill I had to improvise.                      I have set up the bottom cover on the  drill to sort the cylinder fixings  ( not enough "feel" on the mill)         Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #49 on: February 07, 2021, 07:40:14 PM »
Still enjoying the surprising amount of shed time at the moment,   I have been drilling for the cylinder studs.  Did the bottom cover on the rotary table first...tapping size of course.  Next I put it on the cylinder and drilled through. Same for the top cover and top end of the cylinder.  Threads and clearance holes to come next.   Lacking confidence to trust the rotary table consistency I chose to spot through the covers ..Drill a hole,  pop in a snug screw,  another hole, another screw, etc You get the picture.  Always works well.       Terry       

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #50 on: February 07, 2021, 08:04:31 PM »
Looking good.

Just remember to mark the covers so they can go back on in the same position, with that many screws on the Clarkson there are a lot of combinations to try if it does not line up first time ;)

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #51 on: February 07, 2021, 08:57:42 PM »
Jason, I have a set of 3mm number stamps so ALL bits get marked for correct orientation....Been caught before :-[        Cheers    Terry

Offline pgp001

  • Full Member
  • ****
  • Posts: 770
  • West Yorkshire - UK
Re: Two inch Clarkson Vertical.
« Reply #52 on: February 08, 2021, 07:02:45 AM »
I have just been making the cylinder end covers for Agnes, one of them has 22 stud holes which is a bit weird for dividing on the Boley rotary table, I used a similar method and made the cover to use as a drilling jig for the tapped holes in the cylinder.
The difference is I used the DRO hole circle function on the Boley jig borer to produce the holes in the cover, and I was well impressed that the cover will actually fit in any orientation.

That DRO is something I would never have purchased a few years ago, but I would not be without it now.

Phil

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #53 on: February 08, 2021, 08:25:59 PM »
Phil   I'm afraid the budget doesn't run to DRO although it would be nice :)   my system of dial gauges covers basic needs (just).  I have a perverse sense of satisfaction working with old minimal equipment ::)    Good to hear that you are pressing on with Agnes.

Not being in the mood for tapping lots of 6ba threads I have started on the port block.   Squared up a lump of cast iron then needed to machine a curved face to match the cylinder. Necessary because cylinder wall is too thin to accept a flat interface.     The only way I could see to do this was to use an old fly cutter in the mill. The spigot for the mill collet is only 3/8in so it all seemed a bit risky :o   Took small cuts and held my breath......all worked out ok.  The visible line halfway down the block was due to me having a rest :old: up and down on the heavy knee handwheel took it's toll. Further cuts were non-stop.  Fortunately the little Raglan mill is very rigid and handled the intermittent cuts well.
Just need to bring the block to size now.         Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #54 on: February 13, 2021, 10:31:51 AM »
A further visit to the scrapbinium mines produced a short piece of hot rolled mild steel of 2" x 1" section. I could see a valve chest inside it so milled surfaces to size.  Outlines were marked out in the traditional manner and machining commenced.           Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #55 on: February 13, 2021, 10:34:02 AM »
Oops!   Marking out pic shows the chest COVER ,  Apologies but you get the idea.              Terry

Online Kim

  • Global Moderator
  • Full Member
  • *****
  • Posts: 4357
  • Portland, Oregon, USA
Re: Two inch Clarkson Vertical.
« Reply #56 on: February 13, 2021, 04:15:27 PM »
That makes more sense. The piece in the mark out pic didn't match your description at all - I couldn't see the valve chest inside of it at least!  :Lol:

Looking good, Terry!
Kim
« Last Edit: February 14, 2021, 11:54:51 PM by Kim »

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #57 on: February 14, 2021, 09:14:48 PM »
Not much going on at present.....loads of drilling and tapping.   Last bit today was tapping the threads for the port block onto the cylinder. It will be bonded as well.            Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #58 on: February 16, 2021, 08:34:01 PM »
Good weather this morning so caught up on some gardening jobs.  Shed time spent on the cylinder and port block.  Milled the two steam apertures and drilled through into the port block.  Started to rough out  the outer ports. I do not have a long enough end mill so will have to mill from both sides. Cylinder is fabricated not cast so steam passages will be milled into the mating face of the port block.  I shall leave the honing of the cylinder bore until after all machining is completed.         Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #59 on: February 17, 2021, 07:35:30 PM »
The port block is now finished. Next step is to mount it on the cylinder. I have spent some time working the two together with grinding paste in the interface.  Both faces are marking evenly, bluing seems to confirm this.  I cannot decide what to use for a seal.... JB,   Blue Hylomar, Steamseal, or even a thin gasket?  Anyone with advice.......not having a suitable boiler it's unlikely to be steamed.           Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #60 on: February 17, 2021, 07:39:57 PM »
I tend towards a thin layer of JB Weld as you don't want the excess squeezing up and blocking anything

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #61 on: February 18, 2021, 08:22:01 PM »
Cylinder now assembled courtesy of screws and JB.   Drilled through uprights into trunk guide,  tapped threads then opened out uprights with clearance size drill. Assembled with a couple of temporary screws to see if all ok.  Cylinder is now sat on our central heating boiler for a day or two to cure.  I do not think that I am going to mill out the round body to expose the flanges :(  and make it more "casting like". A bit of stud making is possibly the next job.             Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #62 on: February 19, 2021, 07:10:08 AM »
If you put a couple of dummy brass round head screws either side where curve meets edge of valve block you can tell people it has a cleading ssheet around the cylinder and the "void" is filled with insulation. ;)

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #63 on: February 20, 2021, 08:38:53 PM »
In spite of my previous post I decided that I would mill out the "waist" on the cylinder.  The plan was to set it in the 3 jaw on the rotary table
with tailstock support and mill lots of converging flats.   The table was bought many years ago along with it's matching tailstock which I have never used.  On setting up the tailstock was NOT a matching unit :cussing:   Change of plan required.       Terry

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #64 on: February 21, 2021, 07:34:25 PM »
Today continued to highlight a lack of the right equipment. I simply needed to drill a 5/8" hole in the conrod stock. My pillar drill lacked a morse taper so the job was done on the Atlas (just)     I drilled and faced the ends of the reversing shaft bracket on the little Clark.. intermittent cuts...very cruel on the little lathe.  Some time spent yesterday applying JB fillets to the base and trunk guide.       Terry

Offline Don1966

  • Full Member
  • *****
  • Posts: 6309
  • Morgan City, LA (Along the Gulf Coast)
Re: Two inch Clarkson Vertical.
« Reply #65 on: February 21, 2021, 09:40:14 PM »
Very nice work Terry. I would of silver soldered the port face to the cylinder. I have done successfully quite a few times by thinning the port face first then placing flat pieces of solder with flux on it and sweeting the two together in a jig to hold it so pressure can be applied to the port face after heating and the solder has melted.

Regards Don

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #66 on: February 22, 2021, 09:49:44 AM »
Thank you Don,    I had considered soldering and it would have been a better job. Unfortunately I don't have a big enough torch at present. :(

Regards      Terry

Offline Jasonb

  • Full Member
  • *****
  • Posts: 7755
  • Surrey, UK
Re: Two inch Clarkson Vertical.
« Reply #67 on: February 22, 2021, 10:31:55 AM »
Even with a decent torch it is not that easy to silver solder CI though it can be done

Offline scc

  • Full Member
  • ****
  • Posts: 897
  • Lancashire, UK
Re: Two inch Clarkson Vertical.
« Reply #68 on: February 28, 2021, 08:54:30 PM »
Reversing shaft bracket finished and test fitted to the cylinder / valve chest.     Fabricated the second bracket needed on the reversing mechanism.       Terry