Nick is right, we could use another team's bandsaw to cut off the edge of the treads.... On Apr 11, 2005 6:20 AM, Karen Hillblom <KandNplace@xxxxxxxxxxxxxxxx> wrote: > > lets bring some > you never know if we might need it > > ----- Original Message ----- > From: Jeff Kane > To: eagleengineering@xxxxxxxxxxxxx > Sent: Sunday, April 10, 2005 9:48 PM > Subject: [eagleengineering] Re: Ballast > > > Oh and we're not changing the thread at Atlanta. The old stuff is staying > on the wheels, so we don't need to bring any new thread. > > -Jeff > > Michael Montazeri <chaoticprout@xxxxxxxxx> wrote: > Yes, and taking into account what happened at So Cal, we don't want to > look bad at qualifiers because we totally changed our drive train. > > On Apr 10, 2005 8:50 PM, Jeff Kane wrote: > > Ya, the drive train is alright. We should just add weight to the back like > > Mr. Mitchell had said. Changing the drive train in Atlanta on Thursday > will > > be somewhat of a big task and chances are, we will have many problems. One > > will be having drive wheels in the front on the bent chassis. The drive > > wheels are bigger and that will also not affect the robot rocking over the > > front wheels. We have about 10 spare pounds on the robot that we can use > > for adding extra weight, so we should see to adding some weights in the > > battery box, or on the chassis. Oh and Nick...most of the weight is in the > > back. The b attery, gearboxes, and the two posts holding up the arm are > > closer to the back of the chassis. Only when the arm is extended over the > > front of the chassis does it seem like the weight is out there because of > > how the center of gravity changes and the robot rocks on the front wheels. > > Turning will also be durastically changed too because the turning radius > > will be around the front of the robot where the arm is rather than the > back > > of the robot, where all of the weight is. > > > > -Jeff > > > > > > Michael Montazeri wrote: > > I'd rather not change a working drive train at Atlanta.... > > > > On Apr 10, 2005 6:43 PM, Karen Hillblom wrote: > > > that is an issue that we were discusing befor we shiped the robot > > > that problem can be fixed by puting the 4 driven wheels to the front > > insted > > > of the back and have the omni wheels in the back > & gt; > because most of the weight is in the front > > > that way there is no added weight and turning should be about the same. > > > > > > ----- Original Message ----- > > > From: Nancy > > > To: eagleengineering@xxxxxxxxxxxxx > > > Sent: Sunday, April 10, 2005 5:00 PM > > > Subject: [eagleengineering] Ballast > > > > > > > > > > > > I had a thought today about the robot rocking onto the front wheels, and > > > loosing traction. > > > > > > You may want to look at your remaining weight bud get, and add some dead > > > weight under the battery. > > > > > > Five to seven pounds would be good. > > > > > > This would lower the center of gravity and keep better traction. > > > > > > > > > > > > The down side may be more difficult turning, due to better traction. > > > > > > > > > > > &g t; The video I shot of the semi finals shows the robot clearly rocking > onto > > the > > > front wheels, and the traction wheels freely spinning. > > > > > > This started the robot rocking back and forth almost wildly as it > > approached > > > the scoring tetra. > > > > > > > > > > > > Let me know what you think! > > > > > > > > > > > > J. Ray Mitchell Jr. > > > > > > Director of Engineering > > > > > > Cinesite Digital Studios, Hollywood. > > > > > > > > ________________________________ > > Do you Yahoo!? > > Yahoo! Small Business - Try our new resources site! > > > > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com