Model Engine Maker

General Category => Chatterbox => Topic started by: Jasonb on January 06, 2019, 04:25:45 PM

Title: Perpetual Motion ( well almost)
Post by: Jasonb on January 06, 2019, 04:25:45 PM
I slipped some of the bits of my Forest inspired flame licker together and gave the flywheel a flick and almost thought I had discovered perpetual motion.

hMioASP3vpg
At least if the engine does not work by giving the flywheel a good flick and keeping the video short I can make it look like a runner :thinking:
Title: Re: Perpetual Motion ( well almost)
Post by: Roger B on January 06, 2019, 04:35:09 PM
You're probably nearer than most of the people who claim to have discovered it  :)
Title: Re: Perpetual Motion ( well almost)
Post by: steamer on January 06, 2019, 04:37:07 PM
Some of the ceramic bearing technology out there is pretty amazing...

Dave
Title: Re: Perpetual Motion ( well almost)
Post by: b.lindsey on January 06, 2019, 04:42:04 PM
Wow, that's impressive!!

Bill
Title: Re: Perpetual Motion ( well almost)
Post by: Gas_mantle on January 06, 2019, 05:29:30 PM
Looking great Jason, that's impressive  :) 

I like those curved spoke flywheels on ebay and think they are well worth the money.
Title: Re: Perpetual Motion ( well almost)
Post by: crueby on January 06, 2019, 05:34:57 PM
Wow - what kind of bearings are those?   :o
Title: Re: Perpetual Motion ( well almost)
Post by: Jasonb on January 06, 2019, 05:39:46 PM
Just Chinese bearings, one of our model engineering tool suppliers here was previously in the bearing business so knows his balls. Just unshielded 686 bearings straight off the shelf, not been flushed out or had any lubrication added.

https://www.arceurotrade.co.uk/Catalogue/Bearings

Pete, the flywheel looks better now as I have reduced the diameter of the hub and fettled the spokes to suit.

Title: Re: Perpetual Motion ( well almost)
Post by: Gas_mantle on January 06, 2019, 05:41:23 PM
Yea definately looks the part  :)
Title: Re: Perpetual Motion ( well almost)
Post by: Lew Hartswick on January 08, 2019, 01:39:40 PM
Now do that with the piston connected. :-)
   ...lew...
Title: Re: Perpetual Motion ( well almost)
Post by: Zephyrin on January 08, 2019, 08:08:44 PM
This flywheel casting is pretty well balanced !
If you fixe the little unbalance visible at the end (due to the crank ?), you will gain some more running time...