Ramp Dimensions

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Posted by Harold Lawrence.

Other on team #458, RoboIndians, from Jefferson High School and NASA AMES.

Posted on 1/15/2000 11:28 PM MST



In the Competition Manual the ramp is described as being one that has a
15 degree incline with a 1 foot peak (1.3.5 pg 5) made of 3/4 inch plywood
for the deck. The prints, however, describe the ramp as having a 1/2 inch
plywood deck and a base that extends tip-to-tip 7' 9'. By doing a little simple
trig. this cannot be. It should measure 7' 5 5/8' from tip-to-tip for a 15 degree
rise. To me, this could possibly be a large difference from either being on or off
at the end of the match. Any thoughts on this? We're planning on making the
ramp tomorrow and would like to make it correctly.

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Posted by Jon.

Engineer on team #190, Gompei, from Mass Academy of Math and Science and Worcester Polytechnic Institute.

Posted on 1/16/2000 12:19 AM MST


In Reply to: Ramp Dimensions posted by Harold Lawrence on 1/15/2000 11:28 PM MST:



Yes, the manual is wrong. that's why there is a field const. update in update 2... the prints aren't super either... you need to measure and calculate not once, not twice, but thrice. The important details are the 15 degrees and the 1' peak and that its not 3/4 plywood, its 1/2.

this whole field is really buggin the h-e double hockeysticks out of me...
Does anyone else suffer from a chronic lack of extra space to put a playing field? how are you coping? how are you breaking up the structures?
jon
190

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Posted by Justin.

Other on team Blue Lightning Alum from RWU sponsored by FIRST-A-holics Anonymous.

Posted on 1/16/2000 10:08 AM MST


In Reply to: Re: Ramp Dimensions posted by Jon on 1/16/2000 12:19 AM MST:



Jon,

I hear you on the lack of space issue. The space we have is enough to get a little more then half the field in and to get the right width. Basically we've tried to set it up so the distance from the driver station to the goal is correct and we then have some space on the other side of the goal for the machine to practice picking up the 16 balls lined up on the other side but it isn't the full length on the other side. Hopefully you and the other teams can get enough space to practice the manuvers you need to and then it just becomes and issue of it being at a greater distance. I think enough practice performing the manuvers will negate the distance issue once u get to the real field, at least that's my theory...I suppose that time will tell.

-Justin

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Posted by Quentin Lewis.

Engineer on team #42, P.A.R.T.S - Prececision Alvirne Robotics Technology Systems, from Alvirne, Hudson NH.

Posted on 1/16/2000 3:13 PM MST


In Reply to: Re: Ramp Dimensions posted by Jon on 1/16/2000 12:19 AM MST:




: this whole field is really buggin the h-e double hockeysticks out of me...
: Does anyone else suffer from a chronic lack of extra space to put a playing field?
: how are you coping? how are you breaking up the structures?

We are having trouble because of not only the size of the structures, but the 20 foor ceiling clearance. (perhaps needed for the human player practice)

We are lucky in that another team that is pretty close to us is building a field, and has offered to let us (and others) use it...I still think we will build the various structures on the field for practice.

-Quentin

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Posted by Matt.

Student on team #69, HYPER, from North Quincy High School and Gillette.

Posted on 1/16/2000 10:32 AM MST


In Reply to: Ramp Dimensions posted by Harold Lawrence on 1/15/2000 11:28 PM MST:



Really, I thought it was 8 feet tip to tip.

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Posted by Eric Rasmussen.

Engineer from FIRST.

Posted on 1/16/2000 12:45 PM MST


In Reply to: Ramp Dimensions posted by Harold Lawrence on 1/15/2000 11:28 PM MST:



The 15 degree angle is 'approximate'. The important part is the that it is 1 foot high at the peak. We thought, perhaps wrongly, that it would be easier to approximate the 15 degrees than say 14.xxxx degrees. All you need is a little trig to calculate the actual angle.

If you still have questions, contact Frank Melanson at FIRST at 800-871-8326 x109 or at frankm@usfirst.org. He is the official contact for all field-related questions.

-Eric