Four-Bar-Lifter Dynamics

[ewan]

Incase its any use to anyone

http://www.micro-maul.co.uk/4_bar_lifter/4_bar.htmlhttp://www.micro-maul.co.uk/4_bar_lifter/4_bar.html

[storm]

Four-Bar-Lifter Dynamics

As someone with a 4 bar linkage Im impressed Ewan

Why did you decide to write it... too much spare time on your hands :P ?

Ed
http://www.teamstorm.comhttp://www.teamstorm.com

[ewan]

Four-Bar-Lifter Dynamics

lol, no (er... maybe!).

I had some diagram papers lying around from when I made a four bar lifter last year - and Chris (robotic_ants Chris) was looking for a solution to calculate what torque hed need for his lifter - so I thought Id make a page so I dont have to repeat what Ive said over msn to people over and over again

[grant_ploughbot]

Four-Bar-Lifter Dynamics

looks very good ewan!

Understandable aswel!

[robotic_ants]

Four-Bar-Lifter Dynamics

Chris (robotic_ants Chris) was looking for a solution to calculate what torque hed need for his lifter

Doh..! was trying to keep it off the Uk forums..!

Chris - ^_^

[ewan]

Four-Bar-Lifter Dynamics

lol! I thought that when I realised that you hadnt posted here when I was sticking the link up :blush:

Oh well I guess now you can reveal all?

[armadrillo]

Four-Bar-Lifter Dynamics

I second what Grant said. Very good and understandable.

Nice to see that sort of information being posted on the forum.

[leorcc]

Four-Bar-Lifter Dynamics

I agree with that, its very clear and understandable even for foreigners like me.

[philip_taylor]

Four-Bar-Lifter Dynamics

Are four bar lifters better than simple single bar flippers when using a pneumatic ram?

[typhoon_driver]

Four-Bar-Lifter Dynamics

I would think so as they dont only push upwards they push forwards at the same time ensuring that you roll your opponent, although with some of the flippers about these days it doesnt matter too much!

[bulldoser]

Four-Bar-Lifter Dynamics

The four bar is also a lot stronger as well i have seen some flippers occasionaly break with the amount of force if it is a single lifter however the extra bars give it more strength so it wont break.

[knightrous]

Four-Bar-Lifter Dynamics

SHW Ziggy is doing pretty good with a Nitrogen pneumatics system behind a 4-bar lifter... Selfrights too.

[robotic_ants]

Four-Bar-Lifter Dynamics

As a side note the US have just produced an excellent SHW HPA flipper using a 4-bar motion by the name of Ziggy its worth checking out...

http://h1.ripway.com/featherweight/Ziggy.jpghttp://h1.ripway.com/featherweight/Ziggy.jpg
http://www.vrogy.com/video/Starhawk3.0_VS_Ziggy.wmvhttp://www.vrogy.com/video/Starhawk3.0_VS_Ziggy.wmv

Chris - ^_^

[Mouldy]

Four-Bar-Lifter Dynamics

Are you sure ziggy is a 4bar? It looks like a mortis style lifter, Wereby the back end of the lifter is pulled along in the chassi by supporting rails instead of another bar.
Or is that type of lifter also called a 4bar?

[robotic_ants]

Four-Bar-Lifter Dynamics

No the front bar is pushed forward by an pneumatic ram the rear bar just follows and defines the angle of lift.

http://h1.ripway.com/featherweight/take_off_every_Zig.jpghttp://h1.ripway.com/featherweight/t..._every_Zig.jpg
http://www.youtube.com/watch?v=n5cgU39pEmshttp://www.youtube.com/watch?v=n5cgU39pEms
http://www.youtube.com/watch?v=cn6KtgcBQ78http://www.youtube.com/watch?v=cn6KtgcBQ78

Chris - ^_^

(Message edited by robotic_ants on April 14, 2006)

(Message edited by robotic_ants on April 14, 2006)