[eagleengineering] Re: Ballast
- From: Jeff Kane <stonefan527@xxxxxxxxx>
- To: eagleengineering@xxxxxxxxxxxxx
- Date: Mon, 11 Apr 2005 16:22:07 -0700 (PDT)
Okay Michael that's a good call, but Nick...what could we possibly use that for
then? And we are not friction testing people...
Karen Hillblom <KandNplace@xxxxxxxxxxxxxxxx> wrote:ya that too
but you never know what we might need it for
----- Original Message -----
From: "Michael Montazeri"
To:
Sent: Monday, April 11, 2005 4:04 PM
Subject: [eagleengineering] Re: Ballast
> No, what I said was just in case the current treads break for some odd
> reason...
>
> On Apr 11, 2005 2:59 PM, Karen Hillblom
> wrote:
>>
>> 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 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!?
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>> > >
>> >
>> >
>> >
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>>
>>
>>
>>
>>
>> - Jeff Kane
>>
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>
- Jeff Kane
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