Member postings for not done it yet

An automatic gearbox in a car tries to creep at idle. Nothing unusual. These speed controllers are not absolute speed indicators and they are set up initially with some bias within the circuitry so that they actually come to rest at a greater reading than zero on the indicating knob. I expect most do that.

Yours is on the borderline, I expect. An electronics type would likely easily trim a pot on the circuit to correct this tendency.

No good where the temperature gradient is zero!

TEGs (Thermo Electric Generators) have been around for donkey’s years, just not used for micro currents like watches, so I expect this area of use is either a technological innovation or another fad.

Self powered fans sitting on top of stoves is a common use of these devices and some have been used for extracting hot exhaust energy for charging batteries, before now.

So, as per Russell, clearly marketing hype but might work for some.- but i don’t expect they will catch on in the African/middle east/ Indian climates. Likely not much good for Inuits, either, unless they walk around with bare wrists.

No good where the temperature gradient is zero!

TEGs (Thermo Electric Generators) have been around for donkey’s years, just not used for micro currents like watches, so I expect this area of use is either a technological innovation or another fad.

Self powered fans sitting on top of stoves is a common use of these devices and some have been used for extracting hot exhaust energy for charging batteries, before now.

So, as per Russell, clearly marketing hype but might work for some.- but i don’t expect they will catch on in the African/middle east/ Indian climates. Likely not much good for Inuits, either, unless they walk around with bare wrists.

‘However they we cheap Silverline ones from eBay”

So, not very surprising. I reckon those are cheaper rubbish than Rolson used to be 20 years ago! Use once and throw away, unless it is simply threading in and out without any serious tightening or loosening. In fact, likely not get to using them once on really tight fixings - they can easily either strip, due to improper fit, or bend.

I bought a Deltec branded set from HIS, last time we were in Inverness. Not used much and I don't try to undo any tight cap screws with a ball end. I use my Stanley or CK for the tough jobs, so they have not been unduly stressed.

The Deltec ones were cheap as there are both hex and torx in the one box. Just a useful set hanging on the wall. Bought because I was impressed with a set bought from HIS and used for motor repairs, by my step SiL.. His were red, my set are yellow, so I am not yet sure if they are comparable on quality.

Mike,

Are those 11 of 12 headings all modifications/improvements?

Seems like you might have remanufactured it from something fairly useless to something better?

As a buyer, I prefer to deal with a regular forum user, not some ‘fly-by-night’ member who comes onto the forum simply to sell their wares and using the forum as a profit making platform. I always look for the “member’s” (the inverted commas to cover both genuine and ‘imposter’ members) previous postings or their profile. Just like I prefer proper car-booters to the ones selling junk goods specially bought in for the sale.

Molality is easy. About 2.4. Molarity assuming no change in volume will be 2.06.

Up to 8.4 kg can be dissolved in 20 litres of water at standard temperature (293K), so plenty of opportunity to increase the concentration.

Have a look at Keith Fenner vids? He machines quite a lot of boat stuff

Ha ha! Once diagnosed to the cylinder/piston area, you should have jacked the oil out before dismantling.

When one has been sprayed with hydraulic oil, from head to toe, by a leaking hose on a trailer ram (at full lift), one remembers to take precautions with pressurised systems - even if at low pressure.

It will likely need to be ordered, from a wholesale outlet, by your local supplier. My supplier stocks very few Imperial sizes of rod and likely even fewer Imperial threaded rods, but they can source the odd bits I occasionally need.

What does the motor rating plate read? Soft or hard start?

...you have to be signed in...

He is. Needs to be signed in to post!

And neither will a 3 amp fuse run up a fast start one horsepower motor, particularly if under load!

Sorry, don’t know where you read it. In a book, on line?

One dimension (rounded corner) or hemispherical? Woodworking, but the same basic idea for rounding a corner ( might need a better clamping arrangement.

**LINK**

Oops, I think the addy is not the right one. I just searched for rounding with a belt sander or similar.  Just need to add something to fotate the bar if it is a round one....

Edited By not done it yet on 28/01/2018 17:31:46

Seems like the pumping head needs some attention? Or will the piston not retract even if the supply line is released?

Initially remove hydraulic pipe at the pumping head. If the piston retracts it is the head at fault, if not it could be the hydraulic pipe or the ram. Disconnect hydraulic pipe at the ram to determine if it is pipe or piston/ram.

Proceed from there.

I don’t see a problem in procuring sulphuric acid if you are a legitimate user. Tighter precautions (due to abuse by the dregs of society) should not prevent the proper and legitimate use of chemicals such as this.

Thirty years ago I used concentrated acids (mainly nitric and hydrochloric), concentrated caustic soda and several other potentially offensive chemicals by the 50l carboy or 50kg bag. Never ever considered abusing those chemicals, but there are those that will do so. A bit like the demise of ammonium nitrate as fertiliser....

Requesting a suitable dilution, rather than just ordering concentrated acid, may be a better way to realise an order without the initial point blank refusal. Discussing your needs with the company, beforehand, is also far better than trying to change their attitude later. Using bisulphite may be a cheaper process, even if slightly slower.

Expect some checks on your disposal methods, these days, mind!

As an aside, salts can range from strongly acidic to strongly basic, with all values between. Bisulphite - acidic, sodium chloride - neutral, washing soda - basic. The pH of an aqueous solution depends on the radicles in solution and their concentration. Simple basic chemistry.

Actually, the fuse is there to protect the lead, not the appliance. That is why there are only standard value fuses fitted to plugs. The fuse will not stop the appliance being live if there is no earth. Agreed, fitting proper loop connectors is better than tinning.

I still covet the old MK plug tops which had screw on terminals where the wire could be wrapped completely around the terminal post.

Stranded wire, never completely tight, temperature and vibration. Tin your wires and tighten securely.

Beware of watching anything by xynudu, if it a review of a product as he is now in the pocket of banggood - they provide him with items in return for a glowing report on said bits. Not all, but I don’t give any credence to reports on provided samples.

Think here of when you might have ever seen a scathing report on any car that has been reviewed by the motoring press. They either praise it or gloss over (or entirely omit) any failures or shortcomings!

That said, if it is not connected to a review, xynudu vids are often quite handy for ideas.

Phil may be right re the design, but materials can be bought second hand - and often unused.

Take my 20m^2 of 100mm insulation. Second hand (likely cladding from a high rise building?). Mine actually cost me £44+ VAT and was a small pile of 1200 x1200mm and 1200 x 600mm pieces. I was lucky to get it, on the day (someone only wanted 8 or 9 piles, so I got this smaller pile at the same price. His piles were probably about 24-28 high). I had to give away some of mine because I could not fit any more in and on my Saxo . It also cost me 20 litres of fuel, but I did buy other higher value items and spent a night with my wife and friends who were working in that area over the weekend.

There was also umpteen lots of new, but secondhand, timber for sale. £150 + VAT would have bought a14ft Ifor Williams trailer load, so was particularly expensive that day!

The four full sheets of kingspan (costing £33 in total) were simply loaded onto my roof rack and taken home, two at a time, when I was visiting my brother - so very little in extra fuel.