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Member postings for not done it yet

Here is a list of all the postings not done it yet has made in our forums. Click on a thread name to jump to the thread.

Thread: Engine crane
02/07/2017 12:38:02

Steve, you have a PM.

Thread: The diesel controversy
01/07/2017 22:53:09

My Fiat Camper van has a GVW of 4000 kg and is allowed to do 70 on a dual carriage way

Somehow I doubt if that is correct. Only small vans are allowed to do up to 70mph on dual carriage ways. Large vans are limited to 60mph. It is only on motorways that large vans can travel at up to 70mph. I won't argue about it but advise you to check it out before you get a ticket!

Thread: Machinery enamel paint
01/07/2017 19:20:51

teamac ...

and they supplied the original paints to Raglan.

Not so, l think. Or perhaps for the Mk l machines? Trimite were the suppliers for most Raglan machines, as I understand it... Or maybe they are under the same ownership umbrella? Trimite do not appear interested in supplying small quantities to individuals.

JS would likely know.

Thread: Car problems
01/07/2017 13:06:35

Clutch life is directly proportional to the thickness of Lead on the left clog sole

Up to a point. My feelings is that it is more likely the idiots that continually slip the clutch. Ideally it should be 'in' or 'out'. Watch for the number of numpties that slip the clutch to hold a vehicle on an incline, rather than applying the handbrake. Ex thought that she should just keep her foot on the clutch pedal, in case she needed to operate it quickly.

Thread: Machinery enamel paint
01/07/2017 09:07:37

Criterion

Thanks, Rick. Seems a bit greek to me! I think more of derivations from Latin, I suppose. Now back to the paint brush or sprayer.

01/07/2017 07:18:18

Im not a good painter, but price is not the only criterium (singular?) to consider. Coverage, longevity, non-fade, thinners, finish quality, colour shade choice are likely the main comparators, but there will be others - even delivery or minimum order might make a difference.

I'm sure you will be aware of these, but your starting post may only get subjective, not comparative, replies from non -experts. So what are your important parameters, other than price?

Thread: Why did my tool dig in?
30/06/2017 23:16:34

All the above, along with the question: Was the cross slide locked off? That in combination with any of the above reasons might well have made things worse.

Maybe a reamer would have been a better choice (in hindsight)?

Thread: Bench grinder bearing lubrication
30/06/2017 21:05:03

It would not matter if you changed them for new (non-chinese) bearings. I would.

Thread: Old rollocks
30/06/2017 13:00:54

I would explore the option of drilling the first, say 25mm, on the boat and then do as Clive suggests.

Reason is that removing 25% of the shaft, at the main point of stress, would be avoided. But maybe it is well over-engineered so thinning would not be a problem?

Thread: New and inexperienced
29/06/2017 20:01:18

Andy,

Possibly better to start with sourcing the cutters you need. The arbor will need to be sized appropriately. Straight shank arbors are available for fitting in collets, I suppose? I'm getting ready to make a pile of 16DP gears and I am determined these will be cut with a horizontal set up. I've made my 22mm arbor and spacers to suit the cutters I have sourced.

Some may ask why not do it with a vertical spindle, but the next job might well be dozens of ~1.25mm slots about 100mm long around a cylinder of about 120mm diameter (originals were all Impreial dims), so I reckon support at both ends of the arbor will be better.

So, how many teeth are you cutting on these gears and how small might they be? With all the details, someone may be able to give you precise info.

Thread: Transformer temperature
29/06/2017 13:22:34

Sorry Russell Eberhardt, but you are wrong --------- but they are not "designed to run hot",

I agree wholeheartedly, Phil. Radiant electric fires are designed to run hot while infrared versions are designed to run much cooler. The thermal losses of any (properly designed) electrical devices (other than a heater) are manufactured to lose as little thermal heat as practical. Unless it is a cheap chinese wall wart. The windings and insulation has to be chosen around the best the designer can manage for temperature rise in the component. A subtle difference!

Large transformers are designed to run as cool as practicable, given other manufacturing constraints. The necessary design features incorporated are to avoid damaging the item by overheating. If they were designed to run 'hot', they would never sell them in front of the better designed item which minimised the thermal losses.

Thread: Electrifying a distant garage
28/06/2017 23:21:33

Generating your own leccie is 4 x the cost of a line supply.

Can be, not is, I would say.

My 4.5kVA diesel genny goes through about a litre and a half of (red) diesel while running a 3Kw electric fire. So about twice the cost of mains lecky. Small petrol ones will certainly be more costly than one running on red diesel, but the modern inverter gens only rev to what power is required, so not running at 3000rpm continously. Saves on noise, fuel and engine wear.

An old Lister CS could be far more economical on fuel - especially if fed on chip shop waste oil. But not an option in this scenario (perhaps unfortunately).

28/06/2017 19:14:08

I think you should check this out FIRST.

Portable power is getting more and more advantageous as a plan?

Thread: Cutting a fine groove
27/06/2017 07:09:39

I didn't realise that they came in that thin.

A quick check might have revealed they are available in less than half the width you are aiming for. 0.2mm is readily available.

One advantage is that the blade can be easily supported right out to the teeth as the cut required is that shallow.

Thread: Electrifying a distant garage
26/06/2017 22:04:20

Forget the welder is my advice. Btw, what do you call 'big'? Modern rotating field generators don't like welders.

'Small' - again too subjective. Would 2kW cover your needs? Clarke Power would be my last choice for a generator, I think. Is your current generator 2.8kW or 2.8kVA? Maximum, continuous or peak? Machines with VFDs are likely a better bet than hard start motors

I would be considering a Honda inverter generator - a quality product which only makes the power you need, so not so noisy all the time, and light enough to take home - yes, a genny is a nickable item! Do think security while you are at it.

They are also 'stackable' so power could be doubled at a future date.

A mains connection is the obvious simple, and probably best, route, but paying for a meter connection might be a downer. Some DNO's will supply with no daily charge but the unit rates tend to be high. With houses all around at least you have a choice of 'wire slingers'?

Thread: Chain balance
26/06/2017 20:55:37

Did they ever come with a manual? I've never seen one!

I doubt it does better than 10mg. I have an assay balance and (possibly still) a single chain version. Knife edges usually got a hammering unless they were proper assay balances (they were treated with more respect).

Sample on left pan, masses on the right. Do not raise completely until almost in balance. The single chain ones were more robust and the chain could be adjusted with the beam raised. Better balances had the beam raising/lowering knob on the outside of the box, IIRC. We had semi-micro and micro balances (5, 6 or as many as 7dp?). They needed about half an hour or more to equilibrate, even in a separate weighing room.

G&G were not renowned as higher quality suppliers. Oertling (and a few others) were the cream of the bunch where the smaller masses were suspended within the box and dialled in with another selector. Later single pan balances had all the masses added with selectors. Back then, wet chemistry was a craft.

Thread: Electrifying a distant garage
26/06/2017 13:59:56

You omitted to mention details of where the owner resides. (You mention 'owners' and not 'renters'. Simplest might be to power it from another property and fit a power usage meter? Maybe the full details/story would help?

Thread: Hacksaw versus Bandsaw
26/06/2017 13:51:14

Window blanks ... one blank made the drip tray for my Warco lathe

Richard,

That seems to me to be a nibbler job, rather than one for a band saw?

Thread: Transformer temperature
25/06/2017 23:25:48

If you try to sell someone a Rolls Royce when what they need, and can afford, is a Mini

Capital cost or running cost? Clearly a Roller costs more to buy and more to run. That is not what a sensible company would do - they would look at the whole life cost. Most joe public buyers don't have a clue. That is why some Chinese manufacturers can get away with such shoddy goods. They can supply good quality - but at a slightly higher price. Not really the difference between a Roller and a mini, mind.

How often is it stated on the forum "buy cheap, buy twice"?

25/06/2017 12:17:20

they are designed for best cost/performance ratio

You think so? This is referring to these cheap chinese wall warts and similar (the subject of this thread)? They don't care about the whole life cost (buying and energy usage). Cheap, cheerful and hopefully it will outlast the guarantee.

This application is likely a continuously running one, where the energy losses are relatively horrendous as a percentage of work done. I saved nearly ten quid a year simply by buying a phone/ansafone with a better dc power supply

.

A couple of pounds extra, for a decent transformer, would likely have been saved on energy use over the period of ownership and it a) would last a lot longer and b) the cost/performance ratio would be favourable for the purchaser rather than the vendor. Routers from ISPs are likely in a similar state - the transformer likely loses nearly as much energy as the router uses.

Transformers are still not designed to run hot, per se. They are designed to cope with the heat generated. Yes, cold running is an ideal situation, but some of these chinese wall warts are only bought by people that either don't know or don't care.

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