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Member postings for Oven Man

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

Thread: Wiring and connectors
11/04/2022 17:59:05
Posted by SillyOldDuffer on 09/04/2022 11:02:26:
Posted by Mike Poole on 08/04/2022 22:50:02:

... crimping and soldering are both effective but I believe a good crimped connection is many times more reliable than soldering. ...

That's what years of industrial experience confirm.

Solder is excellent unless vibration is present. Two causes: solder temperatures tend to harden copper, making it more vulnerable to fatigue failure. The effect is tiny, but shows up when long leads are vibrated over long periods; worse, solder tends to wick between the strands of flexible copper wire, creating in stress concentrators that break the strands one by one. Again, vibration is required.

Crimping avoids both problems, plus dry-joints, and flux corrosion.

In electronics, soldered joints are the best way to fix small components to a printed circuit board. Nothing moves much even if the board is vibrated, and it's not difficult to stiffen boards with pillars and fit foam pads. However, wires often aren't soldered to plugs and sockets. It's partly because long wires tend to flap and break at the connection. Old school reduced the problem by lacing wires into bundles and clamping them to the chassis, but this isn't practical with ribbon.

As always, the need to apply best practice increases with time, volume and circumstances. A soldered joint on a classic bike kept for display rather than ridden regularly would probably last forever. Doing the same on a production run of a few hundred thousand bikes sold to hard riding customers would cause avoidable breakdowns and a reputation for poor reliability.

Dave

Absolutely Correct. Back in the 1970s we thought we were being clever crimping and then soldering connectors on rally cars. It proved to be a disaster, the crimped and soldered joints failed very quickly with the vibrations. The crimped only joints never gave any trouble.

Peter

Thread: FAULTY DRILL BITS !
18/03/2022 10:38:35
Posted by bernard towers on 18/03/2022 08:48:18:

I have had some Brazilian Dormer drills and the front end goes from ok to appalling, seems to change with sizes so perhaps its poor sharpening set up?

When Dormer moved their production from the UK to Brazil they shipped out all the production equipment. We were involved in moving some of the heat treatment facilities. I suppose as time has gone on most of the people who went out there to set it up will have been replaced by a local workforce and management. Perhaps it should not be considered the same comany these days.

Peter

Thread: Hand Hacksaw
01/03/2022 10:02:23

+1 for the tubular Eclipse frame bought in the early seventies. Mine is well battered but still performs OK.

Given the number of Eclipse blades on offer on eBay can we be sure they are all genuine? I bought a batch of "Eclipse?" blades some years ago and I have convinced myself that they could be second hand even though the paint and labelling is perfect. They cut much better at each end compared with the middle part. Is someone in China using them and then repainting them before selling them on?

Peter

Thread: Smart meter
23/01/2022 15:08:25
Posted by Clive Steer on 23/01/2022 10:29:39:

I'm not sure now who the "supplier" is. Is it the company I pay money to for my power and do they "own" the smart meter and have control over it. If I move "suppliers" do they then "own" the meter. Also if they cut me off they won't receive the benefit of my solar panel power. Maybe they'll only cut me off on cloudy days.

CS

The electricity supply company has control of the smart meter, but they don't "own" them. They are apparently leased from finance companies.

Peter

23/01/2022 09:40:40
Posted by Danny M2Z on 23/01/2022 09:07:54:

There is also this scary scenario hacking a smart meter

* danny *

What a load of rubbish. There is no way you could determine what the electricity is being used for by hacking a smart meter.

As an aside, I don't think gas meters have any facilities built in that would allow them to be turned off remotely.

Peter

21/01/2022 17:02:07

Given that we do not own the electricity or gas meters we are not really in a position to decide whether we want a smart meter or not. What's not to like about them? I've had one for a year now, granted by itself it won't save you money, but it has provided a wealth of information regarding how much energy I am giving back to the grid from by my solar panels. Based on the information I am seriously considering fitting a diverter to heat the water using the excess energy.

Peter

Thread: That Strange Calculator Again
14/01/2022 19:52:00

Despite what the video shows, the design of the "ratchet" to me indicates that the inside disc should rotate anticlockwise. There is a pin that would stop the spring moving downwards if the disc is rotated clockwise.

The fractions are interesting, in some sections they are all the same, just exxpressed differently, 1/2, 4/8, 3/6, 6/12.

Peter

Thread: Do you "still" enjoy driving?
31/12/2021 17:13:25
Posted by David Davies 8 on 31/12/2021 16:22:01:

One thing that annoys me in the hours of darkness is the increasing numbers of cars that I pass with no rear lights on but lo and behold plenty of light at front. I assume that the drivers are using daytime running lights during night time. Am I right in my assumption?

Have others noticed this and what can/should be done about it?

Cheers

Dave

One of the issues is that some cars, my own included, have the dasboard lights on all the time. In days gone by they were a good indicator that you had your lights switched on. I have to admit that I have been guilty of inadvertantly driving with no lights on because the daytime running lights seemed to provide enough illumination. There is a case for all cars having automatic headlights as standard rather than it just being an option on the top end specification of models. If you have had auto headlights and then move to a model without it, I am sure it takes time to adjust and remember to switch them on.

Peter

Thread: Skomo Tablr Saw - Brook Crompton motor wiring weirdness
23/12/2021 22:04:12
Posted by Frances IoM on 23/12/2021 19:33:15:
individual RCBOs (ie 1 per circuit) avoid problem of losing lights if all circuits in shed are fed from 1 RCD which trips - also worth making 1 light in a workshop provide emergency lighting if power removed

In our old family house the light in the pantry, where all the fuseboxes were located, was on its own separate circuit. It proved its worth many times, much better than a torch or candle when you have to rewire the fuse holder.

Peter

Thread: Anyone Else an ELSA Guinea-pig?
10/12/2021 10:06:29
Posted by Norfolk Boy on 09/12/2021 22:11:39:

Norfolk Boy, Oven Man -

With respect you are missing the point. Microsoft designed 'Word' and 'Excel' and their .doc and .xls files and made them transmissable; and Microsoft has a near monopoly. It was always possible to exchange readable and indeed edit files (unless locked by the author) provided both parties have the same MS Office programmes, even if slightly different editions.

With equal respect to you, I feel I haven't missed the point at all, I am very aware of what you are saying and was simply trying to be helpful. As a user of MS office in the current versions I could go on to challenge each of your points including the one above but it would just appear argumentative and there is enough of that around already and I have no desire to be another keyboard warrior so hopefully you wil find a way around your problems without raising your stress levels too much. I hope you find a solution that works for you.

Alan

The point I was trying to get across was that you don't have to spend money buying Microsoft Office to enable these file formats to be used.

Peter

08/12/2021 20:38:46
Posted by Norfolk Boy on 08/12/2021 18:03:27:

I realise and accept your position and yes it's frustrating. MS Office has moved on to use the DOCX and XLSX file types as the more common version these days but the user could save them in .doc or .xls to send out, or as you say pdf as a commonly readable version.

Alan

Libre Office is another free office suite that will handle the latest Microsoft Office formats Docx and Xlsx without any problem. You can open documents in these formats and even create documents.

For me this suite of programs does everything I want without needing to spend money on Micrsoft products.

Peter

Thread: EVs and the heater on a cold morning !
22/11/2021 10:58:41

Even an electric vehicle generates from the motor and from the battery, sufficient to need liquid cooling, so cabin heating on a long journey should not be a problem.

Peter

Thread: Book Your Covid Booster! Errr, How? Where?
11/11/2021 09:12:39
Posted by Dave Daniels on 11/11/2021 07:52:22:

Reading some previous posts I now feel rather pampered.

Got a text message from Surgery to book for flu and COVID Booster at Babington Hospital, Belper.

Booked online for 10:10 AM Tues.

10 min. drive, parked up at 09:55.

Bit of a queue but it was always moving.

Jab in each arm, then wait 15 mins.

Drove out at 10:20.

Home at 10:30.

Some 47 mins. door to door ... so the NHS can work

Dave

Looks like the NHS in Derbyshire have got their act together. Exactly the same experience in Chesterfield. Very satisfactory result.

Peter

Thread: SMR's a conundrum.
10/11/2021 11:15:11
Posted by Circlip on 10/11/2021 10:11:58:

Strange that RR should be given a nest egg to "Develop" a domestic power system, to echo Sam's posting, all UK new clear (NOT New que lar as many ignoramuses state) powered subs have a steam generating plant supplied by RR so it's not new technology for them.

Rolls-Royce have always said that their SMR proposal is not based on the reactors used in submarines so there is obviously going to be a fair bit of development work required. But at least they have all the basic knowledge required to built a nuclear reactor, so thats a start.

I find things like SMRs and fusion really exciting but I am getting to stage in life when I doubt I am going to be around long enough to see any of these new proposals actually come to fruition.

Peter

09/11/2021 10:52:43
Posted by Ady1 on 08/11/2021 15:44:30:

100 billion plus the last time I looked at the windscale cleanup

That would buy a lot of windmills

Reliablity of supply is the name of the game and you certainly don't get it with wind power.

Some people think extracting energy from the wind could have unintended consequences elsewhere. Interesting thought.

I do think there is a big place for nuclear in the general mix of electricity supply and has been mentioned on here it is a lot safer than many people think.

We had a day trip to Calder Hall when I was at school, If I remember correctly we were allowed to get quite close to the action, standing on top of the reactor. One of the best school trips I ever went on.

Peter

Thread: NVR Switch
04/11/2021 11:04:42

The big question here is what type of motor is it, AC or DC?

I guess the Chester integrated unit referred to above is for single phase AC motors with switched (centrifugal) start winding and run winding, the modern equivilent of an NVR and Dewhurst switch.

Peter

04/11/2021 09:31:44

Is the NVR and reverse switch an integrated unit or are they two separate switches? I have never come across an integrated unit. Normally the NVR is on the mains input and the forward/reverse switch is on the output from the control board and just swaps over the positive and negative lines. So changing direction should have no impact on the NVR switch.

Peter

Thread: DRO Z axis
04/11/2021 09:22:24
Posted by Bo'sun on 04/11/2021 08:16:40:

Thanks for all the advice and comments,

I've pretty much decided on a Machine DRO 3 axis kit with magnetic encoders. Being magnetic, is there an issue with attracting ferrous chips? I'm guessing it's OK, because there are plenty of them out there.

You will not be disappointed, the M-DRO kits come with good instructions making installation quite straightforward. The magnetic encoders come with an aluminium cover to protect them and I have had no issues at all with any ferrous chips interfering with them. The magnetic encoders are so much neater than the optical ones and can be easily trimmed to length to make a really tidy installation. Enjoy.

Peter

Thread: UK fires up old coal power plant as gas prices soar
03/11/2021 10:45:38

I think I read somewhere that the JCB "green Hydrogen" is coming from Australia.

Interesting comment from the Environment Minister. He doesn't have a heat pump because he does not think the technology is quite there yet.

Peter

Thread: Synthetic paint thinners PT8 vs. white spirit
01/11/2021 17:15:42

+1 for the Lidl thinners, it is so relatively cheap that it can be used in quantity to make sure equipment is really clean.

Back in the 1960s I was involved in installing Hi-Fi equipment on a Royal Train being built in Sheffield for the King of Thialand. As you can imagine everything had to be the best. All the carriages were hand painted. They looked nice when they put the first coat of paint on but two days later they were rubbing it all down and putting another coat on. In the end I think it had four coats and the end result was fantastic. Creating a blemish free surface over such a large are says a lot for the abilities of the guys who created it. Some things stick in your mind for ever and the paint finish on those carriages is on of them.

Peter

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