Author Topic: another Snow engine  (Read 157736 times)

Offline fumopuc

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Re: another Snow engine
« Reply #450 on: May 17, 2016, 09:32:08 AM »
Looking great!   :NotWorthy:

For virtual milling, do you have the computer create virtual swarf?   :Lol:

I have run the simulation several times yesterday, a quick check under the monitor shows no swarf.
So may be we should talk to the Vetric guys to improve their simulation by some virtual swarf, collected at the bottom of the screen. :lolb:

I do like this simulation very much, it is good to see what will happen later, but unfortunatley there are no clamps or similar in it, so there is still a possible suprise hidden, which last time has killed my brand new 5 mm milling cutter.
Kind Regards
Achim

Offline fumopuc

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Re: another Snow engine
« Reply #451 on: May 22, 2016, 08:30:57 PM »
Dave thanks for checking in.


Chris we do have real swarf now and a lot of.


I have used my set up plate because there is machining from both sides necessary.
Two plates with 5 rocker arms each are prepared for the CNC operation.
Some plywood and wood screws have been very helpfully  to keep everything in position also.
The contour milling was done with 0,4 mm over stock material as conventional  milling in 1,5 mm steps. The final contour was done as one turn in climb modus.
These rocker arms are still partly machined, some additional fixtures and machining will follow.


 

Kind Regards
Achim

Offline fumopuc

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Re: another Snow engine
« Reply #452 on: May 26, 2016, 05:25:05 PM »
Another bank holiday in Germany and some more rocker arms are made.
My next engine will have less parts, sure.
I need a break.



Kind Regards
Achim

Offline vcutajar

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Re: another Snow engine
« Reply #453 on: May 26, 2016, 05:38:17 PM »
Quote
I need a break.

I know the feeling.  When a model takes a long time to finish, the last few parts seem to take longer to do and never ending. 

Vince

Offline Don1966

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Re: another Snow engine
« Reply #454 on: May 26, 2016, 06:19:47 PM »
Achim I am just catching up, but the parts look great to me. Beautiful work even thought it does take time to produce.......... :ThumbsUp:

Don

Offline Roger B

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Re: another Snow engine
« Reply #455 on: May 26, 2016, 07:13:28 PM »
Nice work with the CNC mill  :praise2:  :praise2: So the next project isn't an 18 cylinder radial then  :stir:
Best regards

Roger

Offline fumopuc

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Re: another Snow engine
« Reply #456 on: May 26, 2016, 08:21:52 PM »
Vince, Don, Roger thanks for the friendly comments.

Roger, I will definitive not start an 18 cylinder radial in the near future.
Under my bench is a casting set of a simple 1 cylinder IC engine, which was following me home from a German Show a couple of years ago.
For me it will be a challenge, because I have never machined a casting before.
Kind Regards
Achim

Offline Tonyr

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Re: another Snow engine
« Reply #457 on: May 26, 2016, 08:43:49 PM »
Hi Achim,
Don't stop just yet, the engine looks great.
I understand how difficult it is to keep going.
I have twice as many parts in the double Snow I am still building.
I have to admit I haven't touched it for months now.
I got tired of looking at it.
I haven't even been on this site for a while.
When I look at it now it looks good again.
I will get back on it soon.
I have quite recently acquired a 1932 Austin seven car.
This has been a welcome distraction.
I too said I was going to build a single cylinder engine next.
Unfortunately I am weak when it comes to engines.
I have started to build a model of the Austin Seven engine, it looked simple !
Obviously not that simple when you get into the details.
I need to get back to the Snow before I go any further with the Austin.
I only have the ignition and a few minor parts to make.
Tony

Offline fumopuc

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Re: another Snow engine
« Reply #458 on: May 26, 2016, 11:47:47 PM »
Hi Tony, thanks for the friendly and encouraging comments. Go to know, that you are still making some progress with your version of the Snow engine. This Austin is an interesting project too and I do understand your thoughts.
Kind Regards
Achim

Offline Dave Otto

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Re: another Snow engine
« Reply #459 on: May 27, 2016, 01:58:50 AM »
The rocker arms are looking great Achim!

Dave

Offline fumopuc

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Re: another Snow engine
« Reply #460 on: May 28, 2016, 08:32:27 AM »
Hi Dave, thanks for watching and the friendly comment.


Yesterday  I have tried to give the rocker arms some more shape.
First there was a individual machining/fine tuning of each rocker arm width for a good fit in its individual rocker arm bracket with marking of each set.
This self made fixture/finger plate seems to be a good all round tool.
Than the slots for the rollers are milled into the one end.
A family shot of the sample assembly.
Next to do the holes and threading for the adjustment screw/bolt and the cam rollers.
« Last Edit: May 29, 2016, 07:19:21 AM by fumopuc »
Kind Regards
Achim

Offline Roger B

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Re: another Snow engine
« Reply #461 on: May 28, 2016, 08:56:36 AM »
 :ThumbsUp:  :ThumbsUp:
Best regards

Roger

Offline Kim

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Re: another Snow engine
« Reply #462 on: May 28, 2016, 04:30:29 PM »
Truly amazing Achim!  I love to see your updates!
Kim

Offline Dave Otto

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Re: another Snow engine
« Reply #463 on: May 28, 2016, 11:39:33 PM »
Nice work on the rocker arms Achim; the valve train is looking great!

Dave

Offline fumopuc

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Re: another Snow engine
« Reply #464 on: May 29, 2016, 11:40:56 AM »
Roger, Kim, Dave thanks a lot for still watching.


For the last shape of the rocker arms, I have chosen the old fashion way with two bushes and the sander.
The parts are in the tumbler now for polishing.

Kind Regards
Achim

 

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