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| Ikea engine! Experimental engine runs! |
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| John Hill:
Here is a very crude movie of a very crude little engine. (Just click on the links) I made this to test a few ideas relating to solenoid engines. The solenoid is a 500 Ohm AC solenoid which even with 230V on it had a rather feeble pull and like all(?) solenoids it has most of its pull over the very last part of the stroke, which is not what we want for a solenoid engine. Connecting the solenoid so that the end of the stroke coincides with 'TDC' means most of the solenoid pull goes into trying to stretch the connecting rod! What is needed is for the solenoid to come to the end of its stroke sometime before TDC and the engine not to bind up. So I put a slot in the connecting rod, the solenoid hits its stopper at about 300 degrees and the engine continues to freewheel until it lifts the solenoid armature again and the coil is re-energised at about the 200 degree point, maybe a little later. I also fitted a bridge rectifier to feed the solenoid DC which improved the amount of pull immensely. Now that I know this principle works I should now get busy and make a 'nice' engine to display it.. :coffee: http://www.flickr.com/photos/25239206@N06/5956704873/ http://www.flickr.com/photos/25239206@N06/5957266120/ (P.S. I am getting quite pissed off! The camera will not focus! The cameraman does not have a clue! I dont know how to edit an AVI. And to cap it all off Flickr could not have invented a more clunky way of me showing you the clips! (Where the heck is the thoroughly pissed off icon?) |
| dsquire:
Hi John Neat little engine that is. Now that you have the principle down pat I can't wait to see what you come up with next. They could be quite a powerful little motor. While looking at your pictures on the Flicka page I noticed the yellow Taxi. Your not running a side line business there are you? :lol: :lol: :lol: Cheers :beer: Don |
| DaveH:
John, Smashing bluudy smashing :clap: :clap: :clap: Great :beer: DaveH PS about the camera focus - you must use your good eye! :lol: :lol: :lol: |
| Stilldrillin:
Crackin' little engine John! :thumbup: Well done.... :clap: :clap: David D |
| CallMeAl:
Nicely done. |
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