Recent content by EthanHopper

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  1. EthanHopper

    1/5 scale Bristol Centaurus

    I dont know if im motivated enough to make 18 spark plugs lol, but would be cool. Lots of room in the heads due to the lack if valves so was thinking as small as you can buy from commercial manufacturers for small weed wackers etc. But I'll consider anything. As far as info and articles...
  2. EthanHopper

    1/5 scale Bristol Centaurus

    I have heard of people making them but I don't know if I'm that motivated lol. Was thinking something as small as is easily available, weed wackers or something along those lines, the heads have lots of room since the lack of valves. As far as info though anything about distributors or hal...
  3. EthanHopper

    1/5 scale Bristol Centaurus

    It's been a couple years, not sure if anyone's still out there, but intending to get back to this engine. The crankcase has been a cool display on my dresser for some time, I graduated and it got shelved like lots of things. But I think it's time to continue it. I would also like to endeavor...
  4. EthanHopper

    1/5 scale Bristol Centaurus

    Back at it again, had a few days off school last week but full steam ahead this week. I've started on my cylinder heads now as I'm waiting on tooling to finish up the cylinders, you can see the rough blanks have been cut and faced. They're a very simple design because of the valveless head. You...
  5. EthanHopper

    1/5 scale Bristol Centaurus

    Thanks! I did wonder if anyone had any suggestions on parting tools for cutting cooling fins? the size of the fins were not an issue for design and won't affect any other part of the engine so they can be decided upon later. The smallest parting tools we have here at the school shop are 1/8"...
  6. EthanHopper

    1/5 scale Bristol Centaurus

    Thats a beautiful looking engine. It looks like a model of a bristol hercules, same company, same design, just 4 less cylinders than the centaurus. He's doing a much more exact replica to the full scale one and it looks perfect.
  7. EthanHopper

    1/5 scale Bristol Centaurus

    My 72 head bolts came in today and at a good time with all the cylinder blanks bored and turned (no cooling fins yet, i wanted to machine my ports first). Because of the sleeve valve design the engine is a 4 stroke but has a 2 stroke style head with no valves and only the ignition i n it...
  8. EthanHopper

    1/5 scale Bristol Centaurus

    Hello I'm pretty new here and this is my first thread so pardon me if i did this wrong. But I've embarked on a new project recently and thought I'd share it and gain wisdom from some others more experienced in the hobby. I've drawn in cad the plans for a model of an 18 cylinder double row...
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