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In the US Navy welding school, we started with oxy-acetylene welding, then brazing cast iron, and finally “stick” welding. My later classes included high pressure silver brazing, high pressure pipe and hull (with exotics like inconel, etc.), and then on to the aircraft school for all forms of...

I like the looks of that Minh Thanh! This’ll certainly be one to follow and I look forward to your progress. John W

I’ve experimented with printed gears in PLA, PLA+, PETG, Glass Filled Nylon, and Carbon fiber Nylon, all tested in my HF Mini Mill. No significant wear or breakage on any of the materials, with the cheap filament standing toe-to-toe with the expensive stuff. For a more wear resistant gear, as...

This is a truly fascinating bit of work and experimentation. I enjoy your failures (and the learning experiences they promote) as much as the triumphs! Thank you for sharing, John W

I wish I’d have thought about this before I turned the crank for my Pioneer engine! Non-compression and relatively low impulse on ignition/powerstroke would’ve suited brass or bronze counterweights perfectly! Well, another tidbit to store away until another project comes along! John W

Believe it or not, JB Weld held as a repair on a 351 Ford exhaust manifold for years without failing. Not sure what others have found, but that repair lasted well beyond my selling of the truck. On the order of at least 12 years until I lost track of it! John W

I don’t want to hijack this thread, thanks for your patience Nerd1000! If I find anything else out, I’ll start a new thread, and anyone with further info is encouraged to message me direct. John W

LOL! He spoke about how efficient it was, and I wish I’d have pushed him further, but I didn’t have the same level of interest back then.

Nerd 1000, I know I’m coming into the thread late, and without much info to offer on diesel, but I have a question for you regarding a term I heard from a long-dead engineer neighbor. He mentioned something called a “perfume diesel”, and I’ve never found anything referring to this type of...

I would think that the mass of the harmonic balancer should at least partially offset the inertia loss in flywheel disengagement. This is an excellent write up on your proposed starter system! John W

Yep, truly beautiful work, and the line width issue was why we were taught with lining pens. Heavy lines outlining part drawings, finer lines detailing dimension extension lines, finer lines still for dimension lines and arrow points, Fine lines for sectioned drawings, on and on, and on. Lots...

My projects in my drafting classes (1965 to 1970) always ended with ink on vellum, including the hand lettering (anyone else remember TOM Q VAXZY? 😉). I’m not sure I could still ink with a lining pen, or even think of a reason to try! Nothing more fun that watching the ink run under your...

That’s a sweet looking pumping engine! The water wheel draws the crowd, but that smooth running Denny captures my imagination and attention! Congrats, John W

Another beauty George! I’m still unpacking and reviewing your 3D printed Ford small block files and here you come with this gem, not to mention being stalled on my 3D printed Elmer’s #5!!! John W

BRAVO!!!

I recently bought a cast iron 750 pound caster to use as well. After stripping out the bearings and boring for concentricity, I inserted a cast iron piece and drilled and bored for the crankshaft end. VOILA’, a cheap and effective flywheel! You folks just keep adding more “tools” to my...

What do you think the max temp for that application might be? I’m printing TPU gaskets that seem to be holding up well on the intake side of my Weber engine, and perhaps I could gin up some of the appropriate size for you. The TPU I’m printing is supposed to have a shore rating of 95A, but I’ve...

I’ve started printing TPU gaskets. They seem to hold up to the heat well enough and are pretty impervious to oils and fuels.

Baguio is a beautiful place, or at least it was when I was last there 50 years ago.

I’m still working on the CAD stuff for Elmer’s #5 (geared) engine so I can print most of the parts. I’ve got the ring gear and pinion gears drawn, as well as most of the base. These, along with most all of the other parts, will be exported to .STL files to send to my printer. I’m still torn...