john.r.davies

The efficiency of a liquid-to-air cooler is a function of the area exposed to air flow, relative to the the volume of coolant. The surface area of a sump is trivial compared to the 6.25 litres of oil in it, so that covering it with a sump guard will have no effect. That cars may have a sump guard AND an oil cooler is down to their use. Competition cars, especially rally cars, may need the first because of the ground they traverse, and the second because of the excess work over road use that the engine must do. John

Thank you, Peter. I know you well enough to respect your scientific background. But it is unfortunate that the first lines of your draft quote "catholic clerics, physical mediums, and poltergeists" as evidence for the hypothesis, stripping it of all confidence. Such charlatans have been discredited by, among many, James Randi who is himself a professional magician. If a few examples escape that condemnation, so do the Standard Models of sub-atomic and universal structure, both of which cannot explain fully what is observed. Quantum Theory is one of the best tested in all science,

Of course Blaine uses a 'trick' - he's a magician. If I knew how he did it, I wouldn't explain, becaue that spoils the pleasure of 'magic', but if that trick were as mundane as inserting a video clip, where the crane hoisting him isn't seen, why are his audience amazed and surprised? Or, are they all actors? They cannot be actors. Magicians perform their magic in front of paying audiences, who would storm the stage is something as crude as you suggest is shown them! Much stage magic is as amazing to the audience as anything that might be described as "paranormal", but if the 't

David Blaine can levitate. David Blaine is a magician.

My race truck, the TRansit, is liveried up with ""Silverback Racing" signs that are magnetic. Easy to apply on a flat surface but maybe not if it were curved or profiled. And they do not fall.off! John

Thank you, Ian! I had seen either format, and never understood the difference! John

Yes, Bob, I fell for that the first time, and it took a session with Cr*pCleaner to get the worm out! This time, Norton, MalwareBytes and Cr*pcleaner have found nothing untoward in my desktop. So the data breach must have been online, the gods know where. Jhn

NO! Those messages were sent from my account by the scammers, who also arranged for any replies to be sent to them, so that they would have a new crop of valid emails to prey on. They are NOT safe! In a scamming email, the style described by alfrom is spot on, plus "Please contact me - I need to chat" or similar in a pathetic tone, are standard scamming scripts. DELETE THEM! Do NOT reply! I'm so sorry that so many friends have been disturbed by this episode. The happy aspect of this whole sorry affair is the number of friends who have contacted me, to ask if I'm OK, even neighbo

I have no idea Roger! Nothing personal, certainly. Andy, I felt like that about BT, I was cursing them up and down, but a computerwise friend tells me that almost certainly the scammers got my details from me! Then they could go to BT and 'be' me to change the records. John

All. BE AFRAID, BE VERY AFRAID! I am the victim of a hacking exploit. The scammers got into my account at BT, changed the email address as Jochem found, and the recorded mobile phone number, so that I couldn't get in to reset my password. Clever. Then they se the account to send out the messages as others have received and to forward all received messages to them. SCary! The BT Email Team (NOT the webpage support team who know nothing) sorted it, and I'm back online. But it has buggered up Facebook for me (no bad thing) and other message boards, and I still have the tas

Peter, I thought that the Zinc was just a convenient atom and ion to balance the phosphate, which was what the oil - and the surfaces it protects - needs? Shouldn't we discuss phosphate content, rather than zinc? John

60 inch primaries? Certainly, Sir! That's one of Gareth Thomas', but as he never promoted it I suppose it wasn't that succesful. John

Thank you! What an excellent review that adds to the conditions that may cause glare, and which a simple eye examination may exclude. Delighted that despite your family history, glaucoma has been excluded! The same exmination will.reveal early cataract, which I have been nformed of too! But too early for any rational treatment. John

The popularity of these 'antiglare' glasses is worrying. As I mentioned earlier in this debate, 'glare' is a symptom of the eye condition 'glaucoma', which is mainly related to age. In a population whose average age is increasing, more people will suffer from glaucoma. But over and above that factor, the incidence of glaucoma is increasing. (Alan P Rotchford AP, Hughes J, AgarwalPK and Thatham A, Prevalence of treatment with glaucoma medication in Scotland, 2010–2017, British Journal of Opthalmology, 104(3), 381-5, 2020 ) Glaucoma is associated with blindness, is easily and pain

Surely there can be no argument that an extractor manifold MUST have equal length primaries. Thermal variation can only influence their length. Anyway, "No doubt those designing F1 engines and the like may well have the computer modelling to test their designs but that wasn't available back in the day." They certainly do, and I give you, Cordon D., Dean C., Steciak J., Beyerlein S, "ONE-DIMENSIONAL ENGINE MODELING AND VALIDATION USING RICARDO WAVE" "Ricardo WAVE" is just as suggested a system to model engines' internal function. Cordon et al derived this chart: I've