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Recent content by marksavoca

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  1. M

    Oliver Evans The Columbian Steam Engine

    The valve body has 4 ports, an input, output, bottom of the cylinder and top of the cylinder. The rotating brass valve has an inner chamber and an outer chamber. The input port is always in the inner chamber, the output port is always in the outer chamber. As the valve rotates, the top and...
  2. M

    Oliver Evans The Columbian Steam Engine

    Just some Douglas Fir I had laying around.
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    Oliver Evans The Columbian Steam Engine

    I built the flywheel from 3/8 x 3/8 steel bar. IMG_5492 by Mark Savoca, on Flickr IMG_5552 by Mark Savoca, on Flickr IMG_5598 by Mark Savoca, on Flickr For the gears, I started with commercial gears and machined to the design. IMG_6331 by Mark Savoca, on Flickr IMG_6856 by Mark Savoca...
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    Oliver Evans The Columbian Steam Engine

    My build of 'The Columbian Steam Engine' designed by Oliver Evans in the early 1800's. From Wikipedia: Oliver Evans (September 13, 1755 – April 15, 1819) was an American inventor, engineer and businessman born in rural Delaware and later rooted commercially in Philadelphia. He was one of the...
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    1/4 Galloway Hit and Miss engine

    I'm a bit behind on posting... Sorry about that. Here is the last set. I decided that I've seen more rusty old engines than clean, fresh ones so I went with an aged look. I also created a small box to house the coil and battery. The paint technique was to paint a rust colored layer...
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    1/4 Galloway Hit and Miss engine

    Thanks Jason for the advice! New fuel and better ground seems to have done the trick. Still less power and I need to adjust the governor, but I'm very pleased! Some videos (click to view): IMG_8748 by Mark Savoca, on Flickr IMG_8803 by Mark Savoca, on Flickr IMG_8815 by Mark Savoca...
  7. M

    1/4 Galloway Hit and Miss engine

    I can't see any markings on the cam gear to align to the crank gear. There are some diagrams that show the cam at tdc and -8 deg. I could see fuel being 'pushed' out of the carb on compression stroke. Time to try and seat the valves better. This time I used Bon Ami cleaner with a little...
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    1/4 Galloway Hit and Miss engine

    Haven't posted in a while, so here is the latest. Getting close to being complete. Built some of the hardware, pins and screws. IMG_7298 by Mark Savoca, on Flickr IMG_7389 by Mark Savoca, on Flickr IMG_7391 by Mark Savoca, on Flickr IMG_7393 by Mark Savoca, on Flickr I also...
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    1/4 Galloway Hit and Miss engine

    Not really exciting, but needs to get done. IMG_7277 by Mark Savoca, on Flickr I purchased the valve and coupler and made a custom length of pipe to connect them.
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    1/4 Galloway Hit and Miss engine

    Starting with the casting. IMG_7198 by Mark Savoca, on Flickr IMG_7201 by Mark Savoca, on Flickr IMG_7206 by Mark Savoca, on Flickr IMG_7210 by Mark Savoca, on Flickr IMG_7218 by Mark Savoca, on Flickr Checking fit IMG_7223 by Mark Savoca, on Flickr Following others...
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    1/4 Galloway Hit and Miss engine

    I was excited to see the ignitor work, so I wanted to make the coil. After some online research I started to build. The basic plan is short (~2.5inch) segments of coat-hanger wire, wrapped with ~200ft of 18 gauge coated wire. I found some plastic plugs that would hold the ~1/2 core...
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    1/4 Galloway Hit and Miss engine

    Up next is the fuel tank. I see many people make very nice brass tanks but most of the pictures of real Galloways look to have a galvanized tank. So I went for a more rustic and perhaps realistic look. For the end caps I used 3" stove pipe caps. I soldered a short piece of stove pipe between...
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    1/4 Galloway Hit and Miss engine

    Starting with the raw casting IMG_6972 by Mark Savoca, on Flickr I tried to get it as true as possible using the rough casting. IMG_6975 by Mark Savoca, on Flickr I then bored the inside so I would have a better spot to hold on. IMG_6977 by Mark Savoca, on Flickr Flipped it...
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    1/4 Galloway Hit and Miss engine

    It's been a little while since I posted, so I'm catching up again. Mounting the water hopper to the cylinder. Pretty straight forward, 4 thru holes and 4 tapped holes. IMG_6831 by Mark Savoca, on Flickr IMG_6833 by Mark Savoca, on Flickr IMG_6835 by Mark Savoca, on Flickr
  15. M

    1/4 Galloway Hit and Miss engine

    Thanks, I'll do that. How about the intake and exhaust valves. I have some that match the specifications, but they seem pretty stiff.
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