openspaceman

As @Muddy42 says. Perhaps you need to go back to basics. Begin by putting a pump and gauge on the fuel inlet to the carb and see if the inlet valve holds pressure, pump it to 5PSI and the needle should hold if there is no depression in the venturi.

I don't know the carburetor specifics but generally the idle mixture screw controls all the idle fuel, so if its screwed in nothing can bypass it. The main jet is slightly different in that there is an undersized orifice (part of the check valve) from the diaphragm chamber direct to the venturi, the HI screw just allows additional fuel into this for tuning. The check valve at the top of the main jet should prevent air being sucked into the diaphragm chamber from the venturi.

Not so with mine, it exhausts into a concrete lined brick chimney, good draw and no noticeable smoke into room. The uninsulated chimney acts as a storage heater when the stove is lit all the time, radiating heat into the room and the upstairs one 24 hours a day.

During burning. I can generally tell if someone is burning chipboard, mdf or plywood as I walk past, by the smell. Though if you burn it hot enough there should be no smell, as if you walk by a crematorium you won't notice a mdf coffin burning by the smell. This is because everything has to reach a temperature of 1200C for 1.5 seconds before being sent up the chimney. Event then is has to reach a ejection velocity at the top of the stack ( I can't remember how many metres/second ) that the hot gases carry on up a long way before they are diluted and dispersed.

My boss in 2005 had a 2" briquette maker and that only used sawdust and the theory was as you say, same with pellets but the friction only causes a thin skin of plasticised lignin, so the larger diameter briquettes tended to fall into wafers if miss handled. You could somehow increase the pressure but this would get so hot they would blacken and produce acrid smoke. Incidentally he was involved with making a machine that made straw "pucks" for burning, it was so mechanically stressful that it was always breaking so they gave up with it. On the smaller pellet machines, which were basically feed cubers, a by product of semi chemical pulp making was used to make up for the lower pressures. It was something like sodium lignosulphite from dissolving the lignin from the pulp. I think those pallet blocks are basically a form of chip board, as such they will be about 7% formaldehyde glue, the smell of which is fairly characteristic so you should be able to tell.

If the carb you tried was off another working saw and worked well then no, unless the tubes are on the purge bulb the wrong way round. The problems I have had with air being pulled into the purge valve have been worn/leaking throttle enriching pump ( and this cannot be completely deleted, @bmp01 fixed it with a blocking plug that still allowed fuel in the purge circuit ) and the main check valve leaking. In the latter case I think it was someone poking a wire through it or blasting it with compressed air.

There was always an exception from LOLER where the load is not over people or within the riskzone apart from the operator if he is in a ROPS, FOPS and POPS protected cap. Mind things may have changed in the twenty years since I was involved with NPTC FMO.

Does this model sense rpm off the back of the alternator? @Jase hutch should be along soon to answer this

It may be something to do with the working environment and long hours. Twelve hour shifts stuck inside and whenever they get to sit down it's with tea and biscuits rather than proper meals.

I got that wrong, it's 55 years since I last had to do it. It does add but it does so by NANDing two numbers and the discarding the most significant bit (0)101==Decimal 5 (0)001== Decimal 1 (1)110 NANDed Discard most significant bit 110==Decimal 6 So the most basic thing a computer does is a comparison of binary digits and from this simple operation every thing which we do on a computer is based. Next it's qubits and that totally confuses me.

So am I, more so as I got older and can't see the benefits in automating and mechanising everything. Physically doing things is satisfying and mostly good for the body. AI is good at recognising patterns, in fact a digital computer only compares things, it can't even do binary adding but uses a quirk of ANDing to look like it's adding. I had great hopes of AI when a guy from Logica explained how a computer programmed to be "intelligent" could recognise objects in unfamiliar surroundings and that was in 1987. I had expected an AI triage system at a hospital or GP's; breathe into a machine to analyse metabolites in your breath, similar for blood, urine and faeces and check them for DNA of foreign microbes. After all there are more viruses and bacteria in you than you have cells of your own.

I don't know. I won't see it, you might.

Something similar but less complicated was made from a 1/2" spring steel rod for ground skidding multiple trees when thinning, something thinner would work for ziplining. Picture of the concept made from a piece of copper wire.

That's what the Luddites and Saboteurs said. Think about all those clerks who sat in rows and columns of desks with mechanical calculators summing up bank accounts, electricity bills etc. All jobs automated by data processing. Look at the service industries that grew with the labour which came available. Loss of jobs was never the issue because the problem comes from the wealth of the people that own the capital that grew the systems taking humanity on a train to the cliff at ever increasing speed.

I have seen similar with wellingtonia where the drooping bottom branches have rooted and spawned new trees.

Yes but needs grass that has been managed short.

Brains was 1/10d when I first went to Wales, it tasted like vinegar to me after the sweet (and stronger) bitters here, but I soon got used to it.

So it is

Yes , I have looked under my profile whee I would expect it to be but no mention of signatures there.

I don't know, not had one here, perhaps we must ask @Steve Bullman how you change a signature?

thanks Pete and good luck. You still haven't changed your sig

Yes you are. Where are they made?

I've avoided Facebook but so many special interest groups seem to be there and closed. So as I have a couple of technical questions, a caravan and three tractors to move on I decided to sign up. All went dandy till I was asked to produce a short video to prove my age and identity, there's no camera on this desktop pc so I had to close out. I immediately got an email saying I am banned for 180 days.

What does that do that a 7 pin socket can't? Is it because the lights are canbus controlled?

I don't remember how it came out, certainly not for quite a while and we only worked together for a short time, weeks rather than months, it was 50 years ago.