Machining a Casting - Boring an Engine Cylinder

[mikruson]

Incredible! More pleaase :)

[Kaptainkneemow]

You are a master craftsman! Very interesting and well done videos. I learnt so much! Thank you

[shades2]

This vid is boring. :)

[Gregkret]

I have been inspired by the set of videos. I wanted to ask if you sleeve the engines or run aluminum cylinders and if so, do you run rings and what they are made of and what are the pistons made of?

[myfordboy]

@Gregkret The cylinders have a cast iron liner. I use cast iron pistons with no rings. The cylinder is lapped to a good fit with the piston. I find the engine will run longer on the miss strokes with no rings, less friction. I am not looking for max power but a slow running engine.

[chrissd40]

These are some really great parts you are turning out! I loved your homemade shime supporting the workpiece.

[MrJerryanderson]

I guess there really is more then one way to skin a cat. Use what's available, Good job!!!

[itanc1]

any tips for making stirling power pistons/cylinders such as what material? have a colchester and a small mill. can they be made from brass or ali? hope you can help. cheers

[Ibringthetruth1]

I thought you would have cylinder in the headstock spindle.

Why reverse it ? Is this common?

Been searching for engine boring vids. Great stuff.

[myfordboy]

The casting is much too large to fit in my headstock. Even if it would fit, the boring tool would be very long and springy. Doing it this way there is less tool overhang.

[Ibringthetruth1]

@myfordboy

Great stuff, although on the related videos it shows a Harley engine being bored with headstock.

Guess it can be either way right?  Just preference.

[Ibringthetruth1]

good videos.

[junkman6261]

is this engine finished? if so how is the rest of it made, the crank, rod, etc.? Could we see an updated video?

[myfordboy]

I was going to wait until the engine was fully finished before showing it but I have uploaded another video of the progress so far.

[kcr357]

How do you find the center? Cone attachment? or do you have one of those bits that you fit into the chuck and turn it, then adjust the x and y axis to find center?

[myfordboy]

Plates with centres drilled were screwed to the ends and with the casting held between centres.The plates could then be adjusted to get the casting running true with ref. to outside cylindrical top. The casting is bolted to a metal plate and packing added whilst still between centres .

[Axbent]

wouldnt have hurt to put the fixed steady at the tail end... ;)

[myfordboy]

The bed of the lathe was not long enough to accomate a steady. If you look at 1:26 you can see the casting is right at the end at the begining of the operation.

[Axbent]

with no intent of critisizining your work, u need no help! But you could have added the steady at a later time in the process, or even have the steady outside the lathe bed! Just some coments to point out nothing is impossible for the wiley amateur! thx for the great vids!

[gwheyduke]

Good videos. I watched several of yours including casting a flywheel. I have done quite a bit of casting also, using oil sand & a small propane fired furnace.

Well done! Sent you a video of the York PA. "Cabin Fever"engineering show last year

[torniaccio]

Mr Myfordboy, thanks for sharing your wonderfull videos.

If you know Italian language, you can understand that my nick name means "bad lathe machine" ... because i have worked a lot of years with my father that taught me how to work with lathe and mill machine.

I have enjoyed so much your video, and in the meanwhile I have stolen

some of your tricks. ;)

Plz forgive my english!

[regpye]

What is the best way to bore a small diameter cylinder? Say for a Stirling Engine power piston.

[myfordboy]

Hold it in the chuck and use a boring tool or mount on cross slide and use a boring bar between centres.

[scaledtanker1452]

This is good stuff, you have me hooked. Thanks for shareing.

[regpye]

I always wondered how would be best to do that, thanks again for a wonderful demonstration.