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Member postings for Carl Wilson 4

Here is a list of all the postings Carl Wilson 4 has made in our forums. Click on a thread name to jump to the thread.

Thread: taper roller headstock adjustment
25/08/2020 12:31:02

Just for information, you can check the bearing preload quite easily.

On the M250 when out of gear it should take 0.9 to 1.1Nm to turn the spindle if the preload is correct.

This can be checked by wrapping a piece of string around the periphery of your chuck and pulling with a spring balance. The load to get the spindle turning gives the torque.

By way of example:-

Torque is force x distance, the distance in this case being the chuck radius. For a 160mm dia chuck, the radius is 80mm or 0.08m.

The force required to give 0.9Nm at this radius will be 0.9/0.08=11.25N. Dividing by 9.81 to get Kg gives us 1.15Kg. Similarly for 1.1Nm we get 1.4kg. So if your spring balance value is between these figures then all is well.

Thread: New Nimrods arriving
04/02/2020 22:43:00

Not going to happen.

04/02/2020 19:45:43

Last reliable one we had my arse. I worked on the Nimrod for many years, both at NMSU and on the line.

They were fantastic aircraft and in a league of their own worldwide in the ASW/SAR field.

I was there today when the P8 landed. It was flanked by two Typhoons that broke as they flew over us, just before Findhorn Bay, then roared away in a sharp banked turn towards Lossie, leaving the P8 to land at Kinloss.

I'd love it if it had been a British built aircraft; it was criminal to scrap the MRA4 in my book. That said, it was still a magnificent sight to see a big aircraft in RAF markings landing and taxiing at Kinloss.

Thread: VFD Question
17/01/2020 12:00:02

Old mart should have added "on this site". Lot of clever clogs here.

Thread: Harrison Mill missing parts
02/12/2019 11:41:16

I'm currently restoring one of these machines. Mine is a 1969 version. I normally post on the mig welding forum. You can see what I'm doing there under Harrison Horizontal/Vertical Mill Restoration. It's always good to find someone else who has one of these.

Thread: Natural gas for TIG welding
01/04/2019 19:12:14

Helium is an excellent shielding gas for tig. Especially good for steel. It increases arc penetration for the same current.

Thread: Tube Seam
18/02/2019 11:44:19

Whether or not BA threads, number or letter drills etc are used in new work today is completely irrelevant.

They are engineering standards and could still be used if required. Not long ago I worked on aircraft where BA and BSF threads, as well as number and letter drill sizes were in use every day.

To claim that these are not engineering standards is a bit misleading.

Of course, if you are building something in your own shop, you have the choice to use any standards you like. Or indeed none at all.

Thread: Lathe Identification
16/02/2019 19:48:30

It's utter shite is what it is.

Thread: Copper Boiler Construction?
10/12/2018 10:55:31
NPT threads do not seal on the taper. There is a leak path around the threads.
Thread: headstock oil
04/12/2018 13:38:56
Apologies. I should have read the op. Just trying to get across that one needn't get hung up on names and such like.

I've seen a lot of people scratching their heads over oils which are all functional equivalents, just with a different name as they are the same product but by different manufacturer.

Edited By Carl Wilson 4 on 04/12/2018 13:39:35

04/12/2018 12:54:21
Nuto 32, AWS32, Tellus 32, it's all the same. It's all mineral hydraulic fluid.
Thread: Model Electric Motors?
04/12/2018 08:12:24
Could you run it from a solar cell in a solar engine kind of arrangement?
Thread: Interests other than Model Engineering
04/12/2018 08:02:44
Can be summed up by the following.

Lathe:- machine to make parts for milling machine.

Milling machine:- machine to make parts for lathe.

Also like electronics and microcontrollers.
Thread: Washing machine motor
01/12/2018 11:09:55
Agreed. They are suitable for only one application which is the one that they are designed for. The be inside a washing machine.

They are built to a budget for a very specific application. So they aren't really generic drive motors in the way an AC induction motor is.

As wasteful as it seems, the safe and best option is to recycle the whole machine. The motor will then be dealt with appropriately and may end up as a spare to repair someone else's machine.
Thread: Cutting a large round hole
21/11/2018 20:14:35
I've also yet to find an equal to the original abrafile. I have a small stock of originals that I use carefully.

I think the nearest equivalent now is a tungsten carbide tile cutting saw blade. Not as good as an original abrafile but should do a good job on the above.

A 120 mm hole saw is going to make a right mess.
21/11/2018 19:41:33
The hole saw option will be a complete dogs breakfast. Hole saws tend not to be especially round and you will end up with an oversize/oval hole.

The way to do this is to use an abrafile in a fret or coping saw. Mark it out with dividers then drill a small hole to get the abrafile in. Then saw out your hole.

Minimum amount of filing then required to achieve the final dimension.

Abrafiles are now sold labeled up as 'rod saw blades' I believe.
Thread: cutting the bar of a digital calliper
24/10/2018 20:55:59
That's meant to be a pound sign not a question mark.
24/10/2018 20:55:11
A friend of mine has just fitted a DRO to his XYZ 1440 lathe. He got the DRO from Ali Express. It has cost him ?150 inclusive of ?18 import tax.
Thread: Electrolux vacuum - Need to make a missing wheel
23/10/2018 15:56:52
The first question in maintenance is is it worth repairing?
Thread: Storing Machinery In Damp Conditions - Advice Please
23/10/2018 15:34:21
Common or garden waxoyl. Used it in the RAF to protect aircraft going into long term external storage. Works perfectly.

In my second career, have used it to protect non stainless steel components that go subsea. Works a treat, protects against seawater corrosion. Another thing to do is wrap stuff in denso tape. Sort of waxoyl impregnated fabric tape.
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