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Member postings for JasonB

Here is a list of all the postings JasonB has made in our forums. Click on a thread name to jump to the thread.

Thread: Painting
25/01/2020 16:08:22

Yes as Neil says just a thin mill scale, probably a bit of S275 steel. If I'm doing a lot of work on a part I will strip it off with brick cleaner(acid) first if not just leave it on as it adds a bit of texture which often siuts teh fabricated "castings" that I make.

Thread: My First Stationary Engine
25/01/2020 10:14:44

You could cut it from a single piece of 35mm dia or use 32mm dia and solder the valve block to it or if you want to keep the swarf down then make with a soldered on top flange too then you only need 7/8" stock for the cylinder.

The original muncaster drawing shows the end cap soldered on which makes it easier to bore straight through, though loctite would do.

Thread: Gipsy mk1 engine plans help ,, Jason ?
25/01/2020 07:37:01

Can't see anything obvious on the drawings but as you say the hole must be there for a reason. Ask on MEM forum as there are a couple of members there who have built it.

Thread: Milling plate clamps
25/01/2020 07:07:50

One reason I suggested teh Unimat type is similar to what Clive says as they use a captive jacking screw rather than stepped packing blocks so a lot easier to work with on a vertical surface and easy enough to make from flat bar, in your case just use studs inplace of the tee bolts.

Thread: Silver soldering 19mm steel.
25/01/2020 06:59:12

Also looks like you have totally exhauste dthe flux or did not use any as there is no sign of it on the workpiece. You will need HT5 or Tenacity No5, big burner, 4bar regulator and be prepared to wait for it to warm up.

Don't know what your blocks are made from but I doubt they are reflecting much if any heat back into the job. You also have the air holes of the burner down inside the blocks which will mean they don't draw in plenty of fresh air and may even cause the burner to go out.

Edited By JasonB on 25/01/2020 07:31:23

Thread: Milling plate clamps
24/01/2020 19:35:39

Chronos do a M6 set, the Unimat 3 clamps would also fit.

Thread: cam gears
24/01/2020 16:06:25

Vega ones should not be a problem to get, Muffet are still going and you can also get 48DP from the likes of HPC

I need to dig out the matador drawings to see what it needs or if you can post the details that would save me looking.

Thread: Nalon Viper
24/01/2020 13:04:59

As John MC has hinted they do nor run on diesel that you get at the petrol station

Thread: Moving a Sieg SX3 Mill
24/01/2020 13:01:20

Yes and almost a year later it has not landed on my toes.

Thread: Roney Oldfield Middleton Double Beam Engine
24/01/2020 07:18:44

I don't know if there will be any more errors as I only went through the parts covered in the first couple of installments but hopefully there won't be more. Since publication started the sketches have been posted on another site so you could make use of those if you want to get on.

It is also an engine that you could add some more features to to get it looking a bit less like a barstock engine if you wanted such as adding some taper to the columns and detail around the plates, I did not get too far into it. Could even make it a cross compound.

Also it should really be called a double side rod engine rather than double beam, maybe I should start a thread asking for a clear definition between a beam engine and a side rod engine.

middleton siderod.jpg

Thread: Gathering pallet
24/01/2020 06:53:21

Edited By JasonB on 24/01/2020 06:53:35

Thread: Digital Subscription
23/01/2020 19:52:20

Since the change from Flash it is not possible to print the more recent issues from the archive on this site, older ones are still printable.

However if you use Pocketmags you can print upto 2 pages at a time, you will need to register and then enter your subscription number.

Thread: My First Stationary Engine
23/01/2020 19:17:50

Aluminium for any flywheel is a bit light unless the diameter is increased but it is easier to machine. I'd stick with steel or iron particularly as it is only single acting and the energy stored in the flywheel is what drives the non power stroke.

An alternative to the Stuart casting would be this one from the same guy that does the one I used on my Muncaster

Thread: Moving a Sieg SX3 Mill
23/01/2020 19:01:04

Should be OK to do that, I did similar with my X3 and the other chap was my Dad who was in his 70's at the time, though I don't think I'd ask him to help now should it need moving again.

23/01/2020 18:12:56

Wrapped under the head has worked OK for me a couple of times, table can be moved in/out to help with balance and if the head is kept fairly low you don't need much additional height above the machine for the crane.


Thread: My First Stationary Engine
23/01/2020 16:34:22

As geoff says you could get away without a ring and maybe just cut a couple of shallow oil grooves with a Vee pointed too, if it is good enough for all those Stuart 10 series and smaller engines it will be fine for this one and the reduced friction will also help with slow speed running on low pressures. Or cut the ring groove and run it without a ring for display and fit the ring if you ever want it to do light work.

I like to use aluminium pistons which again help with smoother running and as this engine has no counterbalance weight on the crank every bit of weight saved helps. Aluminium would work both grooved or with a ring 6082 will be OK.

Fit will be as per that video I posted the other day and hardly measurable but if I had to put a figure on it -0.01 to 0.02mm, a little more if running on steam rather than air.

I tend to use 2.4 cross section rings so for that size cylinder a 11.6mm ID x 2.4mm ring will work well. Groove 2.6mm wide and 2.3mm deep giving a diameter at the base of the groove of 11.4mm. I'd also suggest Viton as it is not sensative to oils.

Stuart 10 series flywheel would be fine and look nicer or you could make one like my Preston's oscillator.

Thread: Roney Oldfield Middleton Double Beam Engine
23/01/2020 16:14:50

The original Middleton drawings (sketches) do not give a material for the cylinders but they do say the valve chests are from cast iron and I would have thought that was also the intended material for them. Rodney looks to have used aluminium for the chest and cylinder so that seems to have been his choice as maybe he will only ever run the engine on air. Myself I would cut then from iron bar.

Do be aware that there are a few errors on the drawings, the one for the base plate has been revised in subsequent issues as things were not equal about each engines centre line.

Thread: Unimat 3 underpowered ?
23/01/2020 15:57:24

I think Dave has got confused with the various Unimat SL versions which did have several different size motors unlike the Unimat 3 that only had the 95W motor and that worked well for me.

Thread: My First Stationary Engine
23/01/2020 12:50:14

Ron' I'll work out the correct groove width and depth for you this evening, on site now

Thread: Moving a Sieg SX3 Mill
23/01/2020 12:45:51

Separate the column complete with head from the base to give you two pieces.

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