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Type: Posts; User: brian Rupnow

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    I am now in that "post building slump" that...

    I am now in that "post building slump" that always follows a successful build. The engine worked great, started and ran almost the first time I tried it, and ran well. I did manage a video showing...
  2. Sliding calipers (vernier, dial, digital)- yes ...

    Sliding calipers (vernier, dial, digital)- yes
    Micrometers- yes
    Dial gauges- yes
    Test indicator- yes
    Sensitive (.0001"/.001mm) test indicator- no
    Telescoping gauges- yes
    Small hole gauges- no...
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    I just listened to my video, and noticed that I...

    I just listened to my video, and noticed that I spoke in error. The engine under load hits every other stroke, same as any four cycle engine, not on every stroke.
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    Aostling and others wanted to see how this engine...

    Aostling and others wanted to see how this engine reacted under load/no load conditions. I don't have any machinery designed to have a varying load, but I did want to show him and others how a...
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    Can Fusion open .step files or .x_t Parasolid...

    Can Fusion open .step files or .x_t Parasolid files? If so I can send you the flathead i.c. model.---Brian
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    Very interesting about admitting steam to the end...

    Very interesting about admitting steam to the end toward which the piston was moving to cushion it and slow it down before it reversed. I know of something similar. I spent a couple of years...
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    I have an idea for a varying load machine which...

    I have an idea for a varying load machine which basically is turning a shaft supported in bearings with a weight offset to one side, driven by a gear reduction and pulley system. Engine under load...
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    Here is a video of the engine driving the ball...

    Here is a video of the engine driving the ball lifting machine. Engine is working fine, but ball lifting machine doesn't appreciate being run so fast. It is dropping balls out one side, but my...
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    RB211--that drag saw is being driven by a hit and...

    RB211--that drag saw is being driven by a hit and miss engine in the video.---Brian
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    No, I did not lap the big end of the connecting...

    No, I did not lap the big end of the connecting rod. It was a snug fit, so I only tightened the con rod cap bolts to a light torque setting, filled the base with oil and ran it in for 20 minutes,...
  11. OldMart--My engines run for hours at a time with...

    OldMart--My engines run for hours at a time with no damage to the O-rings.
  12. Strokersix--check out some of my engine builds. I...

    Strokersix--check out some of my engine builds. I have 20 engines running with Viton rings and they work fine.
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    https://imagizer.imageshack.com/img923/2926/oNDdpz...

    https://imagizer.imageshack.com/img923/2926/oNDdpz.jpg
  14. Use a 1/16" cross section o-ring. (they actually...

    Use a 1/16" cross section o-ring. (they actually measure at 0.070") The piston groove should be .093" wide (a standard parting off blade) and .058" deep. Use a Viton ring--they are much more heat...
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    Aostling--Surely you jest. When this type of...

    Aostling--Surely you jest. When this type of engine is under load, they don't hit and miss. They only hit. They don't start missing again until the load is removed. That means that to see the full...
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    What is my final opinion of the purchased cast...

    What is my final opinion of the purchased cast iron rings? They work great. They are a damned snug fit into a piston groove cut with a 0.094" cut off tool, so I had to lay them on a flat sheet of...
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    We're finished. The engine hits and misses and...

    We're finished. The engine hits and misses and runs excellently. Keep in mind that there are variables which can be tweaked to give even better hits and misses. The strength of the spring directly...
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    Coco was a hat thief. She could run like the...

    Coco was a hat thief. She could run like the wind, and there was a good tobogganing hill close to our house in Hillsdale. Coco averaged about three hats or toques a week. She would watch and see kids...
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    The main reason you don't see commercial engines...

    The main reason you don't see commercial engines with Viton rings is that they have to run for more than 15 minutes at a time, and they never live out their lifetime setting on a shelf collecting...
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    Boomer--We'd keep Coco tied all the time, because...

    Boomer--We'd keep Coco tied all the time, because she was a runner. If she got off her chain, we'd get phonecalls from other townships saying "Come and get your damned dog--Shouldn't be letting those...
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    Sparky--The metal piston rings had nothing to do...

    Sparky--The metal piston rings had nothing to do with how quickly the engine started. My engines with Viton piston rings seal perfectly right from the time they are installed. I would love to be...
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    Not going to happen Ringo, but if you want to see...

    Not going to happen Ringo, but if you want to see what happens I will gladly sell you a set of plans for $25. I have adjusted the valve and ignition timing a bit to slow this current engine down, and...
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    Boomer--When my kids were small, I got them a...

    Boomer--When my kids were small, I got them a puppy of no visible breed at the pound. It was the dearest, best natured dog we ever had, and it turned out to be a pit bull. We had her for 14 years,...
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    This is the first engine I have successfully...

    This is the first engine I have successfully built with metal rings. The compression is phenomenal, and the ability of the engine to coast is much improved over a similar engine using Viton rings.
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    Dog bite story---O.T.

    Dog Bite Story
    Back in one of my previous lives, about 40 years ago, I built a house on the town line road east of Stirling, Ontario.
    There was an old, ran down farm across the road that was...
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