General discussion

Discussion in 'General Off-Topic' started by Car crusher, Apr 4, 2014.

  1. Autofan

    Autofan
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    Re: General discussion chat

    I've been stung 6 times in my life, and 4 of them happened in the same year. The worst was a wasp sting on the bottom of my foot, ouch!:eek: should have warn shoes.
     
  2. Cwazywazy

    Cwazywazy
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    Re: General discussion chat

    I was gonna take one from the transfer station but none of them really looked good. My dad got a chainsaw though.
     
  3. SixSixSevenSeven

    SixSixSevenSeven
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    Re: General discussion chat

    from what I've heard, the worst petrol whackers are still beefier than the best electric whackers
     
  4. Cwazywazy

    Cwazywazy
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    Re: General discussion chat

    Yeah. Ours sucks. There's even some stuff I couldn't even get with the electric one.
     
  5. Potato

    Potato
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    Re: General discussion chat

    You can take down small saplings with some gas weed whackers.
    Our Stihl could definitely be used to murder someone.
    I was doing someones lawn who lives next to some people that own this massive great dane that attacked me a few years ago. (he drug me in circles around my yard :|) There's a fence and I was weed whacking up against it. I heard him barking on the other side and he is plenty big enough to jump it. If he had come over that fence and charged me he would have gotten his face weed whacked.
     
  6. SixSixSevenSeven

    SixSixSevenSeven
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    Re: General discussion chat

    Some more expensive gas ones can even have the end swapped out for a mini chainsaw, CHAINSAW ON A POLE BITCHES, CHAINSAW ON A POLE
     
  7. n0ah1897

    n0ah1897
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    Re: General discussion chat

    That's what I have. Nothing better than a four stroke power head with a chainsaw attachment. We also have a edger and hedge trimmer attachment for ours. The thing is a beast. 9 years old and still going strong. Basically brand new.
     
  8. SixSixSevenSeven

    SixSixSevenSeven
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    Re: General discussion chat

    Ours was fairly cheap. 25cc 2 stroke, officially not rated to take chain or a solid metal blade and doesn't have interchangeable attachments. We are going to swap for a heavy duty line when the current nylon one runs out (the line that was originally installed ran out real quick and nearly through the spare) though. Don't really need a chainsaw (but its damn cool :D) or edger but a hedge trimmer would be useful as again we only have an electric one. Our hedge trimmer is mains driven even and even with a giant cable reel only reaches the inside of our hedge and not the outside which again makes electric strimmers rather useless as most of the area it needs to work in is outside the hedge, still even when we were inside the hedge it took twice as long to do anything with the electric strimmers compared to the petrol and that includes the time taken to start the damn thing (although as its been broken in a little it starts pretty easy now, used to be a hard starter when new).

    - - - Updated - - -

    Although I must say, to me there is a certain allure surrounding 2 stroke engines. When I'm set up in my own place one day I want to set up a small home machine shop in which case one of the projects I want to do is a miniature uniflow scavenged v6 engine with blower (after many other projects beforehand though).

    Uniflow scavenged 2 strokes do function rather differently from your conventional weed whacker engine, they actually have an exhaust valve.
    Diesel_engine_Uniflow.PNG
    There are alot of myths surrounding 2 stroke engines.
    Requirement to have oil added to the fuel? Common on loop and crossflow scavenged crankcase charged setups because the fuel/air mix covers every moving engine surface and therefore can be used to spread lubrication yes. Cheap 2 stroke engines are generally loop or crossflow scavenged and use the crankcase for charging so therefore most cheap engines will use oil in the fuel supply but there are many many 2 stroke engines in the wild which do use a more conventional oil system. This is therefore a requirement limited to cheap engines, not inherent to 2 strokes in general.

    Increased emissions. That mostly comes from the lubrication oil being burnt in cheaper engines and also due to the intake and exhaust cycles occuring at the same time you will often find some of the fuel/air mix vents straight out the exhaust (causing a 2nd issue). Switching to a dedicated oil system immediately solves the lubricant burning issue. Direct injected 2 strokes have also been done in which case fuel injection occurs after the exhaust port or valve have closed therefore removing the fuel straight out the exhaust issue. Problem therefore not inherent to all 2 strokes and part of a cheap design.

    Decreased fuel economy. Again, fuel leaving exhaust port. Also there is 1 power cycle for every crankshaft revolution instead of every other crankshaft revolution in a 4 stroke therefore it does indeed fire twice as often. The fuel exhaust port issue, not inherent to all 2 strokes and part of a cheap design. The doubled power cycles issue however brings me onto one of the genuine advantages.

    For a given RPM there is an increased power output due to firing twice as often. On paper a 1 litre 2 stroke engine at 500rpm should deliver the power of a 1 litre 4 stroke at 1000rpm. Therefore not only do you have the decreased fuel economy, but that is due to producing more power.


    And some genuine disadvantages

    Every crankshaft revolution produces a powercycle, the intake and exhaust cycles in a 4 stroke allow a little cooldown which is not possible in a 2 stroke so you may have more stringent thermal requirements in a 2 stroke compared to a 4 stroke of equivelant displacement.

    Typically have more noise due to firing twice as often.

    Most important though, cannot be naturally aspirated. A 2 stroke engine virtually requires forced induction. On the cheap single cylinder designs they use crankcase charging, the motion of the piston downwards into the crankcase increases crankcase pressure and can basically turn it into a very crude supercharger. Industrial 2 strokes (they exist, very popular actually) will use an actual supercharger. Turbocharging them although not impossible is difficult due to turbochargers needing to spool up which is near impossible when starting, as a workaround you either put both a turbo and supercharger on the same machine or in static applications (industrial etc) you use an air compressor externally to spool up the turbo when starting, large ships often use a turbocharger with a clutch on the back so it can be driven as a supercharger until the engine has started at which point it switches to being a turbocharger
     
    #1388 SixSixSevenSeven, Jul 28, 2014
    Last edited: Jul 28, 2014
  9. HadACoolName

    HadACoolName
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    Re: General discussion chat

    Digital high five bro! ;)
     
  10. Potato

    Potato
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    Re: General discussion chat

    I locked up a rear wheel in an f150 at 45mph in a residential neighborhood with a dog in the back.
    Do I get a digital high five?
     
  11. HadACoolName

    HadACoolName
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    Re: General discussion chat

    Depends on how the dog ended up.... :eek:
     
  12. Potato

    Potato
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    Re: General discussion chat

    He fine lol.
     
  13. Cwazywazy

    Cwazywazy
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    Re: General discussion chat

    Yeah, I saw my neighbor across the street using one to cut up branches.

    Our next door neighbor has a bunch of power equipment and stuff. Quad, small tractor, giant diesel truck, (He has some sort of tree service thing that he does) etc. He's always using them for yardwork and stuff. Their yard isn't really even any bigger than ours either..
     
  14. Shadowdragon94

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    Re: General discussion chat

    my BNG running updater,soo bored currently
     
  15. Davidbc

    Davidbc
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    Re: General discussion chat

    I'm working on a new map after learning all the stuff with my previous experimental map. I'm not sure how long I'll take, maybe 2 weeks...
     
  16. HadACoolName

    HadACoolName
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    Re: General discussion chat

    Just thought this was amazing. Same tree just a few years difference
    ew1.jpg ew2.jpg
     
  17. Autofan

    Autofan
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    Re: General discussion chat

    wow, we have all kinds of suburban and commercial development like that were I live. Seems like everyone wants a custom brand new house, and we need a mall every 6 miles. Some older neighborhoods with houses built in the 50's and 60's are actually being abandoned, and there are streets filled with for sale signs in the front yard. In some spots the city will buy groups of these houses that are next to each other, tear them down, and make a park. It just seem crazy how we are abandoning the old and continuing to build new. I've got to admit thou, the way they are building them now, you get a lot of square feet for the $, but the houses look like cheap cookie cutter crap.
     
  18. redrobin

    redrobin
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    Re: General discussion chat

    Please tell me how? That's an extreme jump in performance.
     
  19. Cwazywazy

    Cwazywazy
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    Re: General discussion chat

    Really? Most of the houses on my road were built in the 40s-60s. (Ours was built in the 40s) There are a couple houses with no one in them including the house next to ours. They got divorced, moved to separate places, and pretty much just let the bank take the house. That was like two years ago and the bank still hasn't done anything but put locks on the doors. All the copper pipes and stuff were stolen from it. (Probably by the methhead who used to live on the other side of that house. I'm pretty sure he's in jail now.)
     
  20. HadACoolName

    HadACoolName
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    Re: General discussion chat

    Yeah, we have shitloads of old houses here but they aren't abandoned and unless they are shitholes its very rare for one to be torn down
     
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