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Most of my engines require small amounts under an inch diameter grey iron bar for rings, cylinders and other items. Until recently I've used bar from my stock. I've run out. Seems my goto supplier, McMaster Carr, isn't supplying grey iron in diameters useful to me any more, 1 inch or under. Does...

Hey guys, I hate to admit it but my 4-stroke 8 cylinder 44cc engine burned a lot of oil, spit it out the exhaust pipe and smoked up the shop. Recently I tore into it making new oil rings, changing the piston design, re-honing the cylinders all which helped but it still smoked. The next fix which...

Hey, a buddy is into building small engines too but he's not a member of the forum. Nevertheless you homebuilt engine nuts might like to see this little cuttie. Pay close attention to his rocker design. Check it out at his blog site. http://rchelipilot.wordpress.com/

I've been fooling around with electronic ignitions for a while. Being basically a cheap kind of guy I thought maybe I could build one cheaper than buy one. Not only that but I like fooling around with electronic stuff, especially the kind that can shock me. well I made one. After it worked my...

Some of you handy guys might find this ignition useful. No doubt you'd have to attach your own hall effect sensor. http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10996

Seems like its time to build another v-8. The last one and the only other one I've built runs well but is missing some features I'd like it to have. It's shy a cooling system, water pump and a lube system. You ask why I just don't add these items. Well I want it running cuz I often start it just...

So whats the current take on guys using CNC? I often get the feeling that lots of old timers feel any work done with the aid of CNC is, well, "the computer made it" and therefore of little value. Is the current thinking that users of CNC are somehow cheating and are men of little skill? I got...

A buddy does most of his cnc machining on a cnc Sherline mill and lathe. He's had some nuts wear out and he claims to have to do quite a bit of maintenance on the lead screws and nuts. He's replaced some nuts with Delrin ones. Thus, he thought automatic oilers might be a meaningful addition to...

I've got lots of dull and chipped carbide mill bits. I also acquired a collection of diamond grinding wheels. Seems the wheels have little effect on dull carbide mill bits. I don't know much about diamond wheels. I'm afraid if I press too hard I'll scrape the coatings off the steel backers. So...

I've had occasations when I've needed to drill a deep hole straight. One that comes to mind is when building my v8 I had to drill for the camshaft 5 inches deep and the hole had to run truly parallel to the crank shaft. Well it didn't and I still don't know how to manage a deep hole. Any...

Want to see me making valves for the v8 you see in my header, check the youtube link. BTW, they're 5/16 Dia. from drill rod. I think 12L14 would have been a better choice. Anybody had experience using valves made from 12L14? http://www.youtube.com/watch?v=47tx15FgLQ8