Author Topic: large vacuum engine  (Read 4377 times)

Offline crueby

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Re: large vacuum engine
« Reply #60 on: December 22, 2023, 07:28:29 PM »
The   ball bearing conversion  went great,  I'm sure you will  get the rest sorted out too.   :popcorn:

Online Kim

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Re: large vacuum engine
« Reply #61 on: December 22, 2023, 10:50:16 PM »
That sounds frustrating, Michael.   But as Chris said, I'm sure you'll get it sorted out shortly!

Kim

Offline dudeface

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Re: large vacuum engine
« Reply #62 on: December 23, 2023, 01:22:04 AM »
That is indeed a big vacuum engine! Looks nice.
Miles-- Never underestimate the power of lego

Offline Michael S.

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Re: large vacuum engine
« Reply #63 on: December 26, 2023, 03:39:12 PM »
Hello everyone,

Unfortunately I can't report any success with the engine.
The thing doesn't want to run.
I think I've tried everything. All parameters changed and tried. It's not working. Not even a little.
I'll put the engine on the shelf for now and maybe try again later. Maybe new ideas will come later 💡.

I will now continue working on my last steam engine project.

Greetings Michael
« Last Edit: December 26, 2023, 03:48:00 PM by Michael S. »

Offline RReid

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Re: large vacuum engine
« Reply #64 on: December 26, 2023, 03:52:43 PM »
That's a shame, Michael. It sure is pretty though.

During each build, I always try to prepare myself for the possibility that I'm building a static model with moving parts. That way, when it actually runs it feels more like a bonus, and less like a loss if it doesn't.
Regards,
Ron

Offline Michael S.

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Re: large vacuum engine
« Reply #65 on: December 26, 2023, 04:22:22 PM »
It's not a big catastrophe that it doesn't run.
I was aware from the start that there could be difficulties.
Unfortunately, you only notice this at the end, when the last part is attached.
But I'll let some time pass and at some point the engine will go back on the workbench.

Michael

Offline Zephyrin

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Re: large vacuum engine
« Reply #66 on: December 26, 2023, 04:33:20 PM »
such a beautiful model on a shelf won't look out of place, but surely in time you'll look at it with fresh eyes and ideas to test...

for me, only 2 parameters matter : a very, very free movement (the expected power is miserable) and the best possible sealing (the power relies on the atmospheric pressure only),  so you have to really feel the compression bouncing around very freely, Once you've got that, the cam settings flow naturally with testing.

Offline bent

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Re: large vacuum engine
« Reply #67 on: January 02, 2024, 09:45:25 PM »
Nice work, Michael!  :popcorn:

"Vacuum engines can be bitchy divas."  LOL!  Too true.   I've only built one, but it took a lot of fussing to get it to run.

 

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