another Snow engine

[vcutajar]

Nice.  Are there a lot of parts more to do?  Can't wait to see it finished.

Vince

[Dave Otto]

Hi Achim

That is a nice a smooth motion; the rod turned out great! Did you use a special flux to silver solder the cast iron?

Dave

[Kim]

Nice work on fabricating the conrod.  And your soldering looks great!  I'm gaining a much better appreciation for your and everyone's soldering abilities!
Kim

[fumopuc]

Nice.  Are there a lot of parts more to do?  Can't wait to see it finished.

Vince

Hi Vince, there is still a lot do. First I like  to get the cylinder units, related to cylinder, pistons, pistonrods, final assembled with all sealings.
Next I have to shorten the cylinder stands a bit, they are 0,5 mm higher than needed.
I have made them with some overstock material to do a later adjustment in case the two cylinders are not matching at the same hight of pistonrod centre.
So this later is very close and they both are matching at the moment, hopefully they will do after also.
If this is done, bearing brackets for the camshaft are the next parts to machine.
Followed by camshaft,cams, and 4 of these valve units with valves, springs, brackets and rocker arms.
If all this is done, we still  need an inlet and exaust manifold, so it will be interessting for the next dark month here in Munich.

[fumopuc]

Hi Achim

That is a nice a smooth motion; the rod turned out great! Did you use a special flux to silver solder the cast iron?

Dave

Hi Dave, I am using one flux only, for everything.
http://www.goldschmiedebedarf.de/product_info.php?cPath=595_53_563&products_id=7535&language=en
It starts to operate at 550°C what is matching to the different solder I am using.

[Roger B]

Another step forward    Looking good   

[fumopuc]

Hi Roger, thanks for watching.

Today I have made some studs, 16 pieces for one cylinder only.
Assemble, disassemble, looking for and finding some issues which are not proper aligned.
Again assembling, test , disassemling.
At the end, cylinder one seems to be o.k.so far with studs and the cylinder connector added.
Every time an additional part will be added to the unit,  the source for possible friction is growing also.
But that is the challenge I have been aware of.
Some pictures will follow soon.

[fumopuc]

Hi everybody, here are the pictures I have promised last Sunday. The drawings of Doug are showing 4-40 Hex Socket Head Cap Screws for the fixation of the cylinder heads and combustion chambers, this was changed to some 3 mm studs, made from SS and nice small 3 mm Nuts. In my opinion it looks much better and matches better with the style of the old technologies. If the function will be equal, it will be seen later.
 

[joe d]

Hi Achim

I like the looks of that, better than cap screws.

Joe

[vcutajar]

Yes, much better with the studs and nuts.

Vince

[Ian S C]

Too many engines spoiled by Allen head cap screws, saw a photo the other day of a beam engine covered in them.
Ian S C

[Don1966]

Nicely done Achim and more added to it's looks............

Don

[fumopuc]

Joe, Vince, Ian and Don, thanks for watching.


Today I have made quick and dirty a mount for my Dremel at the lathe.
Reason was the machining of a hardened pin of the shelf, which I have modified as a wrist pin for the Snow engine.
Also the final hole for the spring pin was drilled and reamed after adjusting everything into the right position.
At the end it looks easy, but all this assembly work is very time consuming.
The wrist pin will be fixed with a 1,6 mm set screw in the cross head, the allen key is 0,7 mm.

[fumopuc]

Second job from this rainy and stormy Sunday was the complete assembly of cylinder one with studs and the cross head unit.
Everything is still moving with nuts tighten, so I am more than happy for the moment.
The e-motor is still running to free everything a bit.
<a href="https://www.youtube.com/watch?v=AGHq7NgGDVM" target="_blank">http://www.youtube.com/watch?v=AGHq7NgGDVM</a>

[Kim]

You have achieved very smooth motion there Achim.  It looks very nice!
Kim