another Snow engine

[fumopuc]

Sunday, step two.....
The liners are machined to final diameter, 27 mm in my case.
The honing operation was successful.
One piston ring in position. The gap looks reasonable.
The mandrel/arbor is already finished, which will be used for some of the following operations.
Finally the status of the late afternoon, next steps will follow soon.

[ICEpeter]

Hello Achim,
I have been following your posts and really like what I am seeing. Great stuff and excellent workmanship.

On another subject and since I know you know Mueller, Nick outside of Munich, I was wondering what Nick is up to these days since I can't find any recent postings from him on any of the sites he posted on earlier (Peter's CNC Ecke, for example) Do you know what is going on there? Also, are you familiar with "SpureinsAchim" also from Peter's CNC Ecke? He is also very quiet recently? Would appreciate a little feed back if you have any info.

Enjoy the rest of Sunday!

Peter J.

[fumopuc]

Hi Peter,  just sent a PM.

[Don1966]

Nice to see some progress Achim and it looks great so far. Still with you my friend.

Don

[Dave Otto]

Great progress Achim.

This is a lot of work in those cylinders and they are shaping up nicely.

Dave

[fumopuc]

Peter, Don, Dave thanks for watching and commenting positive about my build log.


Cylinder shaping up next steps.
I am sure you all know about this, so only some pictures about my progress.
To mill the recess, I have been encouraged and I took the assumed middle of my collet block as a reference, I have never checked before if it is true.
So I have milled both cylinders at the bottom surface  without changing anything at the mill, except changing the cylinder with the arbor into the collet block.
We will see later how accurate and equal they are now.
 

[Kim]

You're cylinders look very nice to me Achim!
Kim

[sco]

Thats quite an overhang from the chuck Achim - couldn't you get some tailstock support in there?

Simon.

[b.lindsey]

Those look great Achim. Nice to see an update on this project.

Bill

[Dave Otto]

Nicely done Achim!

Dave

[fumopuc]

Thats quite an overhang from the chuck Achim - couldn't you get some tailstock support in there?

Simon.

Hi Simon, I was worried a bit also. To feel better I have put a clock at the outer diameter and tried to push by my hands.
There was no real movement visible, so I decided to go for it without any additional support.

[fumopuc]

Kim, Bill, Dave thanks for watching and the friendly words.


We have a long weekend here in Germany, some extra shop time is available.
The cylinders are nearly finished now. The final machining went well.
Had to make the holes for fitting, the holes for water inlet  and the holes for the outlet flanges.
For the hole pattern of the cylinder heads I made a CNC program, it will be used 16 times for all following components.
To be sure that everything is fine, I have used my scrapped extra cylinder case as a sample part at the CNC.
Tomorrow I will check the CNC master with a fresh brain before I will start to machine the real cylinders.

[fumopuc]

The final status for this long weekend.
Yesterday I have made a short video of my CNC milling machine doing the hole pattern at the sample part.
I thought it is funny to watch with eightfold speed.


<a href="https://www.youtube.com/watch?v=Xd5__WDF42w" target="_blank">http://www.youtube.com/watch?v=Xd5__WDF42w</a>

This morning, after checking my drawing and CAM data again I have machined my cylinders.
I was worried very much about the 2,5 mm drilling in steel with the CNC, so I have set the drill program to a complete pull-back at every 1,2 mm.
The holes are 12 mm deep so I had the opportunity to give 10 times some coolant/cutting fluid into the hole by a brush.
The brush nearly lost all its bristles, but I didnīt lost a part or a drill.
So finally I am happy, also that I have to clear the mess on my mill and bench now.

[ozzie46]

Nice job. Really looking forward to seeing the completed and running engine.

Ron

[Don1966]

That came out looking great Achim. The cylinders look a treat.......... I like..........