whips nd chains mmmm lol

[007bondy]

Just being naughty lol
Seriously tho my question is not exactly solidworks related but I do have a question about chains and gears.
sprocket 1 is 200mm dia
sprocket 2 is 100 dia
First example distance between sprocket centers is 1000mm
second example same sprockets but distance is 500mm
which is easiest to turn???
The reason I ask is a person I work with said that if you shorten the length of chain between sprockets it gets harder to turn (think pushbike)But i dont get it ???
Having modeled up a simple gear box with belts a while back and using gear mates what he said doesn't ring right ???
The machine that we were trying to fix today has a lot of sprockets and chains and we think we may have to do some mods on it cool
Thanks gurus

 

[pdelnet]

Everything you ever wanted to know about chains but...

http://chain-guide.com/

SW 2008 SP 1.0
Dell Inc. Precision WorkStation 670
2048 Megabytes Installed Memory
NVIDIA Quadro FX 1400
Windows XP PRO SP 2

 

[MadMango]

Ctr to Ctr distance doesn't matter, its the diameters (ratio) of the two.

"Art without engineering is dreaming; Engineering without art is calculating."

Have you read faq731-376 to make the best use of Eng-Tips Forums?

 

[TheTick]

Tooth ration only takes into account ideal power transmission. There is more that can affect chain performance.