[eagleengineering] Re: Ballast
- From: "Karen Hillblom" <KandNplace@xxxxxxxxxxxxxxxx>
- To: <eagleengineering@xxxxxxxxxxxxx>
- Date: Mon, 11 Apr 2005 14:59:25 -0700
the point is that we might need it for something
----- Original Message -----
From: Jeff Kane
To: eagleengineering@xxxxxxxxxxxxx
Sent: Monday, April 11, 2005 2:53 PM
Subject: [eagleengineering] Re: Ballast
...But why? The old thread we have on the wheels work better than any new
thread we can throw on it. If you really want to, you can start sanding
down/grinding down 4 pieces of thread to make them worn down like the old
pieces.
Michael Montazeri <chaoticprout@xxxxxxxxx> wrote:
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 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 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 b ecause
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!
> >
> >
>
>
>
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- Jeff Kane
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