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George wrote an excellent reply, to the surprise of no one. :cool: Air bleeds do perform both functions in full size practice. Additionally, there are three basic circuits, idle, mid-range, and main, and the air bleeds are used to "time", or balance out the transitions just like changing...

Welcome Rich! Glad you found the source of your vibration, I was going to tell you to turn down the Cheap Trick! :)

If your going to play with precious metals, a scale (and a damn accurate one) is going to move right up on your tool list. No better way to cause trouble then to have someone give you 90g of gold round and think they gave you 1kg...

What did the weight come out too? Looks good.

I am sure all the usual suspects will be along for this ride as well. ;)

Will it work? Certainly looks like it. Has it been done before? Probably, but not to my limited knowledge. Is there a reason for that? Several that I can see offhand. ;) You will have a rather large combustion chamber but plenty of swept volume to fill it. You are doubling the hardest and most...

A hearty congrats to you! Well done, looks absolutely beautiful and runs the same. A lesson in perseverance you have taught us all!:bow:

Calcium carbide is hard to find these days, but it does give that authentic glow. :)

Yep, wound up laying each rivet on a firebrick and torching until a pretty golden color made them nice and soft. Only took a few seconds for each one. I had these rivets laying around for a few years. I dont know if they age harden, but annealing certainly made working with them much more...

During the first swaging operation, instead of the body of the rivet expanding when "hammered into itself", it just wanted to bend over.

Yes, but at $2 a pound, if your casting something really that important, you should probably not want to recycle. And that would require commercial crucible's, stirrers, etc to ensure you dont contaminate the melt to begin with.

If by standard you mean US drinking water spec pipe, then apparently so.

I often wondered about how the magnetic field overlap works. Does it just produce waste eddy currents? I just need to sit down with a suitable quantity of adult beverages and think that one out someday...:D

Getting closer

Looks brilliant! I am quite a big fan of the hob method myself. My next step is better process control in the hardening, so I wont be afraid of going full depth on a steel blank, then next thing you know, you find yourself wanting to build a Quorn. Its a never ending vicious cycle.:D

I think Till actually answered the question on the first reply, Figure 75psi x area of exhaust valve seat. Even the professional engine builders have to estimate at this stage. Once its built you can take cylinder pressure readings to determine the actual value, which will heavily depend on...

Entropy seems to know the numbers involved. Diesel being the most efficient in the internal combustion range, (excepting turbine?) and steam being the least efficient. Stirling supposedly outdoes them all. Slow running generally means more mass rotating, which is the opposite of what you get...

Its moving, this is the fun part :)

Thats been on my read list for as long as I can remember, however, it goes for a very premium price whenever I see one.

Usual place?