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Very cool!!

Good morning George, I'll do my best to respond, as Aaron Kohler was kicked off the HMEM Forum after joining and then posting about the show. As of a few weeks ago, the admins weren't responding to his requests to rejoin. :-( (I had posted the flyer before I learned of this.) I don't want to...

Check with Brent Myers at Myers Engine Works. He bought the Maytag projects from Brad Smith. Here's the Web site with the info. Gas Engines | Myers Engine Works Enjoy! Todd.

Sure. We can do that. Not a problem.

Thought I'd post this here as this show is coming up quickly. The Machinist Group of NE Indiana is holding their show in Monroeville, Indiana Saturday October 14th. Joy and I will be traveling there from Hagerstown, MD and setting up as vendors. My understanding is that a number of other...

I always liked the watercolor shading. The photo idea sounds cool as well. Thanks!

That's got a really nice look to it.

@GreenTwin. Thanks for posting those. I could look at them for hours. I have a book on machine sketching from the time period. I'll see if I can find it tomorrow. Thanks again!!

Agreed on all counts. Kozo is the master of clarity. .....and I'm pretty sure he's still producing drawings by hand at 2X the scale in the magazine. For that, I can't even come close. Line widths add a huge amount of legibility to the drawing. I usually use one weight for solid lines and a...

When I take on a previously-designed / kitted engine I tend to rethink the entire design as I go through it, refining it as what I imagine would be the next step the original designer of the kit would have done anyway. For the 1/4-scale NH, I narrowed the hopper walls, added a bead around the...

At this point we're probably in the "maybe next year" mode on the Black Hills Show. We had intended on going, but at this point it's more of a trip than we can really afford. :(:(

I did a similar, lower-volume method by taking urethane rubber molds off of the original matchplates for the Parsell & Weed model and then using these and Freeman Repro urethane to produce multiples of the same piece. These were mounted to 3/4" baltic birch matchplates. This method is probably...

@Jasonb This is spot on. Our core boxes are sand-cast aluminum, machined and polished smooth. These are set up for a hot-process, shell core (blown) coremaking machine at the foundry we work with in Hanover, PA -- another reason to work closely with your foundryman. The patterns for the core...

@GreenTwin That bottle engine would be a bear to mold. The cores would be real head scratchers. Nice engine tho, and definitely worth the extra effort. Thanks for sharing. Todd.

@GreenTwin , I like the look of your drawings and enjoyed them in LSOR as well. They are excellent. I follow some basic rules when I'm drafting for model engineering. None of these are hard and fast, but may give some insight into how someone else "does it" 1) Assume the person reading the...

Lots of good insight and conversation here. THANK YOU!! The NH base casting is the most-difficult rendering I've done in the 35+ years working with CADD and 20+ years of 3D modeling engine designs. Jason is spot-on. This thing is a beast and has pushed me and my CAD system (TurboCAD...

@GreenTwin, we agree that the available casting kits on the market have been dwindling; however, rest assured that Joy and I have no intention of slowing up in doing our part toward adding to the market, and continuing to support the Hobby with our little business. We purchased a long-extinct...

I was looking something up this evening and found a video of the winding process. This was done on an Atlas 10" at about 27rpm. Enjoy, Todd.

@stang86efi I usually order my springs from MSCDirect.com. They have thousands of different ones, and some that are close to what you're calling for. By going with a little larger in diameter, you can handle a slightly heavier wire and still maintain a light spring rate. The page below has...

@cheepo45, GREAT JOB on the build! @minh-thanh, That's the inertia governor arm. It latches with a catch on the exhaust rocker to hold the exhaust valve open for the idle strokes. For the horizontal version of the engine, gravity helps to hold the arm down as a roller descends into a divot in...