2.5piman

Hello Nick, just to clarify, better meaning easier in this case. Alec

hello Nick, silver soldering is one of the easiest processes to use as the solder flows so well once everything is up to temperature. I often use it to join dissimilar metals, eg, brass to stainless. (You can also braze them but that is harder as the brass is molten at the join.) I do have the benefit of oxy acetylene which is better than mapp as it is hotter and more concentrated. A close fit of the mating parts is required but i'm sure you know that? Alec

Hello Harry, in reply to the heading of your post, fit a Merlin engine. :-) Alec

Hello Mr Ecosse, unlless you are set on absolute originality, I would simply countersink the metal parts and used countersunk screws and nylock nuts? Alec

Hello Mattius, what Paul suggested is almost what I did. My workshop had a concrete floor, not too bad a condition but was always damp. I laid a damp proof membrane over the conctrete and laid a floating floor of normal tongue and groove chipboard finished with normal floor paint. I can now lie on the floor without getting cold and damp. Alec

Hello all, This is how all racing versions of the Lucas P.I. are controlled, but of course they spend their time either off or high throttle openings. I noticed that Ric Wood's three litre racing Capri is using Lucas injection. I don't know who supplies spares for all these rare Lucas systems, but relatively there are a lot of them on the historic racing schene, Can Ams for one and of course any Cosworth DFV powered cars. I bought a spare injection system with the idea of fitting it to my Mk 2 Jagaur sometime, but think it will need a larger diameter shuttle to give enough fuel. I have looked online to see if theer are any suppliers but all that seems to come up are Triumph injection parts suppliers? Does any one know differently? For the Triumph, using the figures from tthe manual physical measurements would give a basis for a cam profile, but I don't see any real benefit over the basic vacuum control for a road car? Alec

Harry, I was happy to pay what it cost when I bought it, and found it very interesting, but then I like books like that. I would recommend it and as books go that is not expensive Alec

Hello E.E., silver soldering is an excellent process, very easy to use as it flows so well. Ideal for dissimilar metals, e.g. copper to stainless steel. It is best with lap joints. Expensive! Alec

Hello all, it is so very easy to criticise and say that the government was slow in implementing 'expert advice'. But the real problem is that which experts do you listen to? There are, as is normal, a variety of widely conflicting advice from medical experts who specialise in disease and contagion. Some even say that lockdown is completely the wrong thing to do. That, of course, assumes a health service capable of dealing with a much larger than normal workload. The government tends to use University College London (I think that is the university), the same experts indeed some of the same scientist who advised the government to cull cattle during the 2000 or so foot and mouth, later to be shown to be completely wrong. Epidemiology, the science of numbers very much depends on accurate data, which is not available. When you baldly look at the numbers the infection rate and mortality rate is low for an epidemic, (admittedly accurate figures are simply not available) which is why Covid 19 is no longer classified as a Highly contagious Infectious disease by Public Health England. Hindsight will of course, be wonderful when this passes, but I fear that the cure we are following is going to be much worse than the disease when some sort of normality returns Alec

Hello John, on the basis of reassuring the patient, can it be that any treatment is better than none? Alec

Hello Phil, thank you for all the pictures, very entertaining That you incinerate your waste is interesting but do you have any practical use for the heat produced? Alec

Hello John, From Lucasinjection.com:- "1. INTRODUCTION Origin The Lucas fuel injection system was originally designed for Rolls Royce. Around the end of the war Lucas designed a fuel injection system for the Merlin aero engine (Probably its tank version, the Meteor and later tanks e.g. the Centurion, had Lucas fuel injection instead of a large Zenith carburettor.) It was not a direct fuel injection such as was fitted to German Daimler Benz aero engines of World War 2 as this would have had lost the effect of charge cooling. Lucas continued to design and build fuel systems for Rolls Royce gas turbo aero engines and they still do. The Lucas petrol injection system however was designed for a particular application of one of the "B" range military and commercial petrol engines produced by Crewe. These engines, of 4, 6 and 8 cylinders were designed in the late 1930s for motor cars which might have replaced the Phantom Ill, Wraith and Bentley Mk V if war had not intervened. The post-war cars were powered by versions of the B60 and B80, but a major application of these engines was, and is, powering military combat vehicles. One particular application of a B range engine was a post-war German light tank. A tight spec. was put on this engine. This led to developing a special cylinder head with individual instead of twinned exhaust ports, and also to Lucas developing the fuel injection system in place of the normal carburettors. In finality the tank was not proceeded with, but the fuel system was employed in racing and found its way into certain production Triumph models. Alec

Hello John, it's quite easy and something that should be avoided in most cases. If you grind one face more than the other it will lbe longer. The chisel point moves off centre. Mentioning the chisel point, its quite common in engineering to thin the web at the tip to reduce the width of the chisel and reduces the load on the drill. A good friend of mine's father was a toolmaker at Wilmot Breeden and he showed me that trick. Alec

Hello all, I suspect most of those posting on this thread have never tried hand sharpening drills without any aid; It is not as difficult as you may think. OK, I've been doing it for years but I had to start once. Just be aware of the point angle (118 degrees or near enough as to make no difference 120, the angle of two nuts placed edge to edge), cutting edge length, and clearance angle. With regard to cutting edge length, a trick if a specific drill size is not available, is to sharpen a slightly smaller drill with one edge longer, it will then drill oversize. Alec

Hello Mr Spam, while I normally go by setting S.U.s by the book, and if you need move far from the base setting something is wrong elsewhere. However the fuel should be about 1\8" below the top of the jet tube, and HS4s do not have adjustable floats like many other S.U.s.. Sometimes people lower the level by adding washers to the needle valve, I would have a look there in case? (As you say they are donor cars). I doubt that it is a fuel pump problem as at the moment you are only filling the bowls so not really putting it under much load. Another thing is the attachment adapters to set the chamber vertical irrespective of the angle of the carburettors. Could your donor floats have the wrong adapters for your car? Alec

Hello Roger, do you have a diamond to dress the wheel? If not they are quite cheap, make a holder to mount it in the chuck and you can be sure the wheel is dressed accurately for what you need to grind. Alec

Hello all, a lot of opinions but I don't think anyone mentioned that today, electric cars are charged with fossil fuel, mainly gas. The reason being that nuclear, wind and solar are always at maximum available output and the difference between demand and those three types of generators' output is made up by what are called dispachable power generators, These are gas, coal, diesel and hydro. So until there is (and there won't be for technical reasons) an excess of non CO2 emitting generated power the whole reason for going electric is false. There is, of course, some gain as far as air quality in dense traffic but no gain as far as reducing CO2. I believe the government are using a flat average CO2 per Megawatt of total demand as their basis for calculation of CO2 emissions for EVs but this is false accounting. as it is obvious that the push for evs will increase demand and that puts up CO2 emissions by that amount of extra load met by, as I say, mainly gas. Nick, you mention hydrogen; I assume you are familiar with the practice of 'snifting' compressed gas bottles before fitting a regulator? If you get a hydrogen regulator it states very clearly that you must not snift the cylinder before fitting it, as there is a good chance the hydrogen will self ignite in air. It also burns with a colourless flame. That and the property hydrogen has to seep through various materials , (not leak), due to it's molecular properties. It does make for an increased danger in my view, that, and it's relatively low energy density as it is so light. Alec

Hello Peter, it really does seem that the idea (Started a long time ago by Maurice Strong, one of the IPCC instigators) that we must remove industry is valid, that's all the carbon tax will do. (Although there are bound to be traders who will profit from it, that's what money men do). Alec

Hello Peter, the quantity of CO2 emitted by man compared to total quantity emitted is tiny. Co2 as a greenhouse gas is in a very small quantity compared to the main green house gas. All projections are computer modelled and make little use of water vapour in their calculations. It is called an emergency because of reading the RCP 8.5 which is a fantasy in the projection of the quantity of fossil fuel they expect to be used. It's known as 'business as usual', when in reality it is far from that. Fossil fuels provide 85% of global energy, that cannot be changed in a few decades, particularly as all the green NGOs opposed and hamper any nuclear generation project; if there is an emergency surely they would be all for this reliable and proven technilogy? We are wasting vast amounts of money in trying to control the climate; King Canute is a reminder of how well that went in the past. We should, instead be looking at adaption to circumstances and doing things better. The main decarbonising effort has been to build very many renewable enrgy generators which cannot possible replace conventional generation and maintain a reliable grid on which we all depend. From an electrical point of view they are very poor generators of power. Here's a question for you, John in the original post, wanted to offset carbon from flying. Now given that the majority of the flight will be in a frigid atmosphere, surely the heat radiated from that CO2 will have a cooling effect on the ground? Alec

Hello Peter, " criterion of urgency that the climate emergency now demands " There is no climate emergency, it's all media and activists hype. Alec

Hello John, why have you addressed this post to a small minority of those who voted to leave? Alec

Michael. one solution is to helicoil the crank? Alec

Hello DeTRacted, that is in the proposed legislation, and also the manuals. However they specify spares to be supplied withing 15 days, which is not a lot of use for a fridge or freezer if it's not cooling? Incidentally we are still using an old fashioned Creda electric oven because we cannot find a new one with the same features, high level grill top oven combined, main oven and a warming drawer for plates and cooked food. Spares are quite hard to get and I've fitted industrial temperature controllers for both ovens. I haven't a clue how old it is but it still keeps going. Alec

Hello Paul, We must get out is what I said. Why, Simply so that we are not dictated to by a group who do not have our interests at heart and whom we cannot vote out, they are selected not elected. The aim of the E.U. is to control all of it's member states with no regard for them. Free of the control from this group gives us the opportunity to set our own taxation levels , to communicate directly with the global bodies who determine standards for so many goods we trade in. We hear so much about the E.U. rules we have to obey with regard to standards of goods we make. In reality these standards are determined by global organisations and while we are in the E.U. they input E.U considerations, which may or more likely do not suit our needs. This we can now negotiate directly. Do you really want to be in a country whose future is determined by a generally unfriendly body that usurps our control of what we do by democratic methods? Brexcit is not an automatic route to nirvana, but it certainly is a route that is our responsibility and any gain or loss is our decisions alone. OUT! Alec

Hello TR5Star, " Let's be generous here and say that at the very least, the EU is benign " Let us be realistic, the E.U. is anything but begnign and and no concern for the citizens of it's member states. An intersting book is Varoufakis's book of his time as finance minister of Greece, and his battles with the E.U. and the various banks with regard to the Greek debt. There were various dubious methods carried out just so Greece would seem to be paying the debts to the E.U. banks Had these debts not been repaid on schedule it would have left French and German banks in dire straits. What is even more indicartive of the E.U.'s lack of consideration that they stressed that the debts must be paid on time even if it meant that Greece's payments of pensions and social service were suspended. The Greek finances were that extreme Varoufakis put forward a comprehensive plan that would enable Greece to expand it's very suppressed economy by reforming the way that tax evasion was tackled and removed a lot of the austerity measures the E.U. demanded and outlined how it could both service the debt and progress back to an increase in GDP. The simple answer was a no. Keep receiving the bailout money which the was simply used to repay the debt. He was against Grexit, which at one time looked likely, and was also against Brexit, but only because he thought that with the U.K.'s help the very necessary reforms of the E.U. could be attempted. On this I feel he was very optimistic as in reality the E.U. is an unstopable leviathon. Alec