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It might take longer than 52 hours. This was taken at 2 O-Clock on a Weekday and there is not a single DOT worker at that job site. :big: :big: Kel

Do a search on You Tube For Lego Vacuum Engines. There are a lot of kids powering their Lego Steam Engines off of a Vacuum. Kel

I love the way it Sounds Chuck! Well Done. Kel

Nice Tank Steve! What are you using for fuel line? That nipple is awfully small. Kel

Good Idea. This ones getting done for sure! Kel

Good thinking kvom, I will add a note for this, plus it is the way I did it too. Kel

Thanks guys, I think the 'Spot Face to .375" is a winner. I went back and reviewed the Drawing for the 'Tiny IC' and they have this same note. Kel

In the process of Drafting plans for The TI4, I have encountered a stumbling block, or more of a stumbling head. The spark plug holes are at a compound angle. The holes are located from the bottom of the head and reamed .125", then spot faced, countersunk, and threaded from the top. The problem...

Wow, you are truly Working the little guy, that is awesome! Do you have any guess of the RPM of the motor while it is running with load? Kel

Well Done indeed Bob! Congrats! Kel

I can't tell you exactly how far it sticks out, but it is less than 1/16". The smaller the collets internal hole, the further it sticks out, but not much different. Kel

So it would be perfect for finding weak links :big: :big:, no, but really, that is good to know. Kel

Can I ask why not use the Nitro Fuel Straight up? I have thought about using it on my TI4, but have not tried it yet. Kel

Thanks George. I think I can get rid of the stacking if I make a few pages for the block. I am thinking about a FRONT-TOP-RIGHT for one page, and REAR-BOTTOM-LEFT views for another. Then a third page with detailed diagrams. Since this engine is so small I can fit all three views in scale on an...

Thanks for clarifying the 'multiple sheet' question. I have built engines from plans in the past, and even with a good set, there is a lot of 'Study' time involved to find out what certain dimensions are for, or where they are. Even going from one part to another to clarify why something is the...

Thanks George and Steve. Ah yes, datum point. I am using that technique to show the location of the timing cover holes. I have heard it is not good to put dimensions on the part, or cross reference lines, but can I assume that this is unavoidable in certain circumstances? Is is OK to have...

Thanks for the tip Gail. That looks like some neat stuff. I was thinking about making a metal outer race for the seal, and molding it directly into it. This would keep it from spinning, and hole it in place. I might need to incorporate some little fingers on the race to grab the silicone, and...

Thanks Guys! I think I found out why the rear main was getting no oil. When I took it apart to fix the bearing I noticed there was a ring of RTV sealant around the crank inside the engine. This was acting like an oil seal and preventing the oil from getting to the bearing. I have now installed...

FWIW I thought I would add how I cut the venturi on my last carb. I did not do any fancy curves just an angle (but the fancy curve is probably the way to go). I made a cutting tool, much like a valve seat cutter. It is easy to get the desired 'reversed' shape of the venturi on the lathe. I then...

It really Looks Great going down the rails Gail! I also like your method of making valve seats. Was this tool made from Drill Rod? How smooth was the 'burnishing' surface? Kel