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I'm wondering about the "red" antifreeze that is being used in some cars now. I heard that the red stuff is "better" for mixed-metal engines (iron, brass, aluminum) that the green stuff. anyone hazard a guess?

from what i could see, the piston is within the *sealed* crank case ( packings around the crosshead shaft). it draws on the upstroke, and compresses on the downstroke, sending air into the intake port under pressure (it has a reed valve). exactly like a motorcycle 2-stock. the sealed...

Just took a look qt your work on Tik Tok. never would have thought to use tik tok that way. quite an impessive collection -thanks!

i like your MQL system Awake. nice design. i hear your issues with needle valves. in your video, your initial adjustments appeared to "drift". I.E. the density of the mist cloud seemed inconsistent. when i was doing neon, i encountered the same problem with needle valves. the valves i used...

here's a place that might be able to help. not a recommendation/endorsement, whatever. there is a size shown here HERE that is .005" ID and a .06" OD, rated to about 27000 PSI. the search term was "stainless steel capillary tube". LC Stainless Steel Capillary Tubing i think these will work...

i'm a bit curious when you say that you "see oil vapor coming out of the exhaust". you should be shooting a very fine mist. the quantity of fuel per stroke should also be very small, only a few milliliters. you may have too large or too coarse of spray from your injector. i suggest you "fire"...

fwiw, here's some tech stuff on the Bosch VE distributor-type injection pump series. it's been a real workhorse in a lot of truck and car diesel engines. my VW has one of these. the requirements for a pump design, and ways that the requirements were achieved are described in some detail. in...

i'd second starting a new thread specific to linux CAD. i've been using linux in various flavors since 1993. it's come a long way, baby :) having an "alternative platform" that can run open-source (free) CAD/CAM software would be quite useful... paulr

truly a work of art. thanks for posting the vid! paulr

i found that the condition & cleanliness of a computer fan determines the reliability/lifetime, esp. with laptops. disassembled and thoroughly cleaned the fan of a flaky HP laptop a year ago (with jeweler tools!). never had another problem. ran faster too! FWIW, the increasing use of "solid...

wow, drew a lot of comments. i thought a quick "go/no-go" vacuum test might useful. looks like there's a a bit more to it that. good learning experience. thanks! paulr

would a vacuum leakdown test with an automotive vacuum tester be suitable for a small boiler? paulr

nice job on the rehab, Brian. always followed your posts with interest. - amazes me how many projects you've completed! paulr

celosari, really like your home made tooling. this one is really great. threads are such a headache - no longer! will be making one soon. paul

hermetic, haven't been able to find that mystery symbol anywhere. i did find several different symbol "standards", all from different "domains". there is a set for IEEE, IEC ("international"), DIN (German). Australia has another, i think. there are others as well. electricians here (USA) go...

hi hermetic, the diagram you have there seems odd to me too. i was particularly curious about the "double-V" symbol you asked about. i have a notion of what it may be. i'd like to see the area of the manufacturer diagram where it appears. i didn't notice it on this video. very happy to hear...