Tools, Tips and Tricks

Haha, the same here, i can’t remember ever taken the last of them rolls, always lost them, or stepped on them, making a tangled mess :rofl:

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Spent about an hour watch those ugly dude videos. I now have 25 gallons of pure gas with Stabil in storage. Feeling much better about the 50 dollar hit it took to avoid the E-10. Of course much of that price was because pure gas at my local station only comes 90 octane which is meaningless for the engines I’m running. So thanks for the links. Now I’m going to pull all the float bowls off my engines and inspect them. I have seen green crystals in them before but not the gel gunk. I figured the crystals was some reaction between the alcohol and aluminum in the carb.

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I have a generator I bought a little over a year ago primarily to run my well pump in case of a power outage. I haven’t used it since I ran it for some break in time. The gas in it was Non-ethanol and treated with Stabil. Sat for 14 months and started right up today so proof it can be stored at least that long. I’m going to drain it and change it anyway.

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a question to the forum members…
has someone experience with this electric gasoline generator?


brand pramac…
here nearby is one to sold…
would this size work on chargas for a electric chainsaw what needs input 2200 watt…?
would be sufficient also a genset with 4000 watt?

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Giorgio, as you can see, it is a three-phase generator with a power of 4 kW, that means the total power, the phase power is 1.33 kW, probably not enough for an electric saw. If we got a single-phase generator of such power, it would run the saw with ease, well, just now my brother Lojze was visiting and we were talking about electric chainsaws, he mentioned that some rare models were also three-phase with a power of more than 3 kW , it would be a very interesting saw.

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By nature, I’m more slow-thinking, but I still slowly come to a solution. A three-phase AC generator 3x380V with a power of 4 kW could actually be used at full capacity to drive a 1x220V electric chainsaw. The generator has an output interphase voltage of 3x380V, or 3x phase voltage of 220V. If we make a diode phase voltage rectifier, we get the total power of the generator of a direct current character with a voltage of approx. 300V (this is the amplitude of the phase voltage fluctuation with an effective value of 220V). Chainsaws have a built-in collector motor (motor with brushes), which can operate on alternating or direct voltage, even as an interesting fact, it will achieve much higher power and better efficiency on direct current.
Let me also say that the car alternator is a three-phase alternating current generator with a diode rectifier, but probably, these diodes would not be able to direct a voltage of 300V.

3 kom…

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I am concerned that you may over speed your chainsaw’s motor. Perhaps start by rectifying only one leg of the 3 phases. Be very careful.
Rindert

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By the time you derate it for chargas, it probably wouldn’t be enough. I think you already have your saw so it might be a non-option but you would probably be better served with a battery electric saw. Then you can just charge the battery, and any current shortages in generated output would be compensated for during the charge cycle and not the use cycle.

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Hi Giorgio according to there sales page this is a single phase generator 220/110 4.2 KW /3.9 KW

Has electric start and would be a great candidate for charcoal , if it is the Honda engine it might be the GX390 engine or the next one down from that
Dave

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I am with Sean here. No running around with cords. Batteries are survicable ( theoretically, the time has comeI should practice ) Downside is the price of batt equipment. The good stuff cost an arm and a leg. Chainsaw with a cord are real cheap and do a good job.

The generators we see them here too. Dave showed a nice one if you need single fase. I would make a earth point ( should, with my powerpallet). Dont know how to fix it with DC. 300 V will hurt or worse… correct me if I am wrong.

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thanks for all the tips, now i understand, the generator has only 5 kw peak power for short time, normally 4 kw, and not ideal for me because 3 fase…i thought this has also on the monofase 5 respectively 4 kw…
i must look for one with 4kw peak monophase, this could handle than the chainsaw with 2200 watt input on chargas…right?
i have not yet the saw, but are looking a bit in the internet, because for me it would be really interesting cutting the wood in the forest with chargas in the near future…
a trailer on the motorcultivator with the genset on, arrived in the forest is only to change a valve and the gas from the gasifier of the motorcultivator goes to the electric generator…
my thoughts… one project is hunting the other…
ciao giorgio

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Hi Tone, here is a Stihl e30, 3-phase saw, these are actually pretty common, often to be found on saw mills, where they are handy to cut to big timber.


Heavy beast.

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Goran, thank you, my eyes just lit up when I saw this, is there any such saw for sale?

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Not very often, but once in a while one shows up, as i said they was much used at saw mills and heavy timber framing companys, where they was used “stationary”.
Many circular saw-mills also had them clamped in a device, hanging from the roof, over the circular blade, used when timber is too wide for the blade (top-cutting).
A friend of me saved one a while ago, (smaller saw mills are out of business around here) im going to ask him if it’s up for sale.
There are also some companies selling them new, (not Stihl i believe) maybe Prinz pack-saws have something? If i remember correctly?
Edit: Prinz wood saws seems to have some, but extremely expensive…

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You might look at attaching an electric motor to the mulitcultivator to generate electric that saves buying a new engine. Most generators these days, generate using 3-phase, rectify it to dc, then run it through an inverter for the final power output.

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Giorgio did you read the link to a generator that looks to be the same model as the one you posted ? only that one does not say anything about it being 3 phase it says 220 volts and 110 volts only , no mention of 440 at all , unless i am looking at the wrong model .
Dave

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Hi Dave, on the pic of the generator giorgio posted, there can be seen a european standard 3-phase 16a socket, beside the single phase socket, i don’t know if these sockets are used in whole europe, or in some other countries, but where they are, the standardization rules only allow these to be used for 3 phase, neutral and ground. Voltage may vary from country.

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Hi Goran , we also use that larger type plug on 3 phase and single phase here in Aus we have 10 amp and 15 amp plugs and sockets and they can sometimes look like the 3 phase plugs .

HA i just went back to that link to have a closer look and would you credit it they only gone and taken down that product ! but all the ones i looked at on YouTube ect are single phase anyway .
This is what some of our single phase plugs can look like .



Dave

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The alcohol found in ethanol is not the problem. Storing fuel with alcohol in it is a problem. The alcohol is over 1000 times more hygroscopic than neat gasoline. It will draw moisture out of the air that is drawn into the fuel tank during temperature and barometric pressure changes. That moisture - “water” combines with alcohol molecules and makes them sink to the bottom of the vessel. There - it may come into contact with dirt or other matter in the tank and form conditions that promote bacterial growth. Being an anerobic bacteria - their waste products are acidic. It is those waste products that attack light metals found in carburetors and fuel pumps - dissolving them into suspension in the fuel. Those dissolved metals are what that then plate valve stems, piston rings, and damage catalytic converters. This is why you generally do not find light metals utilized in automobiles anymore. No more galvanized fuel tanks or fuel lines, Light metal or die castings can be used but are typically nickel plated to defend against attack from acids.

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That was a very good explanation of the problems with ethanol fuel, i agree 100% :+1:
Another thing i noticed is the problems with carburetted engines, well, a mixture of gasoline, ethanol and water, saturated with water, tends to resolve (?translation) free water, where there is a pressure drop, or temperature drop, yes, the carburetor, soon the bowl is full of water and engine stops, some engine can pass this, bluddering, misfiring, others not, water can’t pass tiny jet’s due to density.
The solution in old days was to put some water-free alcohol to the fuel, not possible nowadays when the mix already is “over-saturated” with water.

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