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Member postings for AdrianR

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

Thread: Modern reversing switch
11/05/2020 17:04:04

If you can get a NVR switch that can be released by an external switch ie a 5 pin NVR switch e.g. **LINK**

And you are using a centre off switch, It is possible to wire the NVR so that if the reversing switch is moved, the NVR will drop out.

Adrian

Thread: Thermal fuse reliability
11/05/2020 16:02:30

240C sounds very close to the baking temperature of bread, so I would guess it has been taken close to its limit quite often.

I assume there is a thermostat to control the pot temperature, maybe that is on the way out and allowed it to overheat.

Adrian

Thread: Supplier of Johnson-Matthey Stop-Flo or similar
11/05/2020 15:16:16

This place lists it **LINK**

Adrian

Thread: Modern reversing switch
11/05/2020 13:23:24

That switch from ARC probably would work but it is not just a case of saying 16A is enough. The 16A rating is for resistive loads. A motor is an inductive load, which gives a surge voltage when turning off. This means that switches for inductive loads have to open fast and wide to quench the spark as quick as possible.

If you look at ratings for switches they have different ratings depending on the load See this The single phase AC23A rating is probably the most applicable.

For example, my personal favourite the CA10, it is a 20A switch. For resistive loads the max single phase load of 4.6KW but for AC23A rating (Frequent switching of motors or other high inductive loads) the max single phase load is 2.5KW.

As a rule of thumb assuming the switch has an AC23A rating, de-rate by 50%. So 16A * 230V * 0.5 = 1.8KW

As Bayzle said, a mandrel handle is the real answer to easy threading, easy to make too. Motor Fwd/Rev is great, but it is the stopping at the right place is the difficult bit. All too easy to crash the tool into a shoulder.

I think there was a MEW article about restoring a Dewhurst switch, involved replacing the dewhurst with a modern one. Also there is this thread that tells you what to buy and how to wire it **LINK**

Adrian

You also have to remember about your chuck unscrewing with motor reverse.

Adrian

Thread: Cabinets
11/05/2020 08:03:41

I would think if the stand is intended for a lathe of similar weight and size it should be fine. The only issue would be where the bolt holes are. Ie where they are meant to take the weight. If they are anything like the stand for my lathe they just have a flat metal plate at the top so it would not matter where the lathe feet where.

If I remember right, there is a mod for S7 for levelling blocks. If you are worried about where the S7 feet end up, you could make levelling blocks that are a bit longer/wider.

Adrian

Thread: Injector testing
11/05/2020 07:50:55

A slightly off topic naive question. I just about know what an injector is.

Could you use an injector to feed a flash boiler? i.e. connect a coil of pipe between the inlet and out let of the injector, fill with water and heat the coil?

Adrian

Thread: Modern reversing switch
10/05/2020 18:14:01

Kraus & Naimer do CA10X pre configured as a reversing switch with power failure release. https://www.krausnaimer.com/fileadmin/user_upload/Kraus_u_Naimer/Pdfcat/KN100GB.pdf

I had a quick look and could not find them for sale, if you want one you may have to buy the switch and power failure module and assemble them. Probably worth giving K&N a call.

Adrian

Thread: Lost Article
09/05/2020 10:50:25

Not sure if this is what you wanted. Issue 245 Marcus Bowman made a locking wheel nut using CNC

Adrian

Thread: Machine handles
09/05/2020 08:04:29

Oh just found this page 4 https://hyquip.co.uk/module/filecatalogue/download?file=4659

I cant find them listed on hyquip.co.uk but worth a call now you have a part number.

09/05/2020 07:48:42

Not a complete answer, you can get revolving handles here **LINK**

Another name for the handles is Tri ball crank handles

Adrian

Thread: taper roller headstock adjustment
08/05/2020 17:53:45

In the manual it has a section on how to adjust the bearing preload **LINK**

Adrian

Thread: Which wire goes where.
08/05/2020 08:52:07

If you look close at this **LINK**

The capacitor is across the red/brown and the mains would be on the brow/blue

From the name plate you need a 5uF capacitor like this **LINK**

I cant quite see the wire ends, but they look like they have spade ends, if so you may be able to get a capacitor with the same size terminals.

Adrian

Thread: How to store boiled linseed oil so that you can re-open the bottle at a later date
08/05/2020 07:08:27

Glass bottles with real corks are still available, you just have to drink the contents first. For some reason I find single malt bottles the most satisfying to use.

Adrian

07/05/2020 20:57:57

How about something like a Grolsch bottle or kilner jar?

Adrian

Thread: College Engineering Supplies rotary table
07/05/2020 18:56:09

You are lucky, I have wanted to build one for years, such a shame CES don't sell castings anymore.

FYI Harold Hall describes how to make it in MEW 101/102

Adrian

 

Edited By AdrianR on 07/05/2020 18:56:33

Thread: Antique Steam Engine from Doorknob
07/05/2020 08:36:24

The Repair Shop on BBC could be a good place to take it.

Thread: Air supply to test run steam engine.
07/05/2020 07:32:15

Yes Jason is right. I only ran a 1/2" bore engine so the compressor hardly ran. If I am using a lot of air then I do get a bit worried about the duty cycle on the motor, it gets quite warm.

OK for an air nailer or duster, not much use for spray guns etc.

Thread: Help identify this timber
07/05/2020 07:23:37

Im no expert, just looked into this when needing a post and rail fence built. The trouble is there are different grades of treatment, from suitable for dry indoors (UC1) to in ground contact (UC4).

If that is a fence then it should be UC3.2. I am a bit surprised that is C24, it is a better type of construction wood, bit of overkill for a fence. I would hazard a guess that it i only been treated for indoors (UC1 or UC2)

Adrian

Thread: Air supply to test run steam engine.
06/05/2020 19:50:10

I have a Bostich 6L A bit pricey to just run a model engine, but I got it for air nailers and now mostly use it for air dusting. I think compressed air in the workshop is very useful. Stanley does a similar one and I expect there are plenty of other oil less compressors out there.

I did use it on my engine, the regulator goes right from 7bar down to 0, and I ran my engine at 5psi easily.

Adrian

Thread: Buying a small mill
06/05/2020 17:58:24

Re: tapping, in issue 292 there was Grahams Meek's tapping tool. This inspired me, I had a spare long reach tap wrench. Hacksaw the toggle off, and made a knurled knob. I loosely guide it with the chuck and turn the tap by hand.

As Graham mentioned in the article, there is the risk of dropping the tool out of the chuck and breaking the tap, but using a tap holder with a point to guide it, or the lack of feeling when using the mill chuck is equally prone to problems.

So far I have used it from 8BA into blind holes to 8mm in steel, and it has been a great boon.

Re Mill, I have a round column mill with a guide strip, the alignment is not great, but it is not an Emco. I last Thursday I ordered a SIEG SX3 from ARC, it is being delivered tomorrow. It was hard to choose between the SX2.7L and the SX3, in the end the adage buy the biggest you can afford won. An extra 60KG of iron has to be a good thing.

I chose ARC due to the good reviews and personal experience of both the support and quality of the items. SIEG as a brand seem to be popular at the moment. Also I have seen it being sold by other quality suppliers here in the UK and in the US.

Adrian

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