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Unread 24-06-2002, 00:04
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#0047 (ChiefDelphi)
 
Join Date: May 2001
Location: Pontiac, MI
Posts: 21,214
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scared of 4-bars, huh?

Posted by Ken Patton at 2/4/2001 12:17 PM EST


Engineer on team #65, The Huskie Brigade, from Pontiac Northern High School and GM Powertrain.


In Reply to: Can I officially take back my "trade secret" comment?
Posted by Joe Johnson on 2/2/2001 9:51 PM EST:




: You should have heard me argue against the 4-bar puck
: grabber two years back, "Why don't we go with a lift
: again? We KNOW how to do lifts. This 4-bar stuff is
: all well and good for design classes in college, but
: what kind of troubles are we going to cause for
: ourselves if we actually try to use it? yada yada : yada..."

Joe, 4-bars are easy, don't be scared of them ). We did them for our lifts in 1997, 1998, and 1999. You just have to pay attention to the loads where you are driving the linkage. Like you say, simple college engineering. It also helps to counterbalance the mechanism.

Regarding shaft connections, we tend to use the shafts as they exist on the motors, and wire EDM the appropriate shape into the hub of whatever we are driving. We have been using square holes since 1997.

Ken



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