Trajectory B/C

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Trajectory B/C

Postby Jim_R » June 9th, 2009, 9:04 pm


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Re: Trajectory B/C

Postby starpug » August 2nd, 2009, 6:13 pm

Can't wait to see what changes they make to the rules for this season :)
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Re: Trajectory B/C

Postby googlyfrog » August 20th, 2009, 3:56 pm

I might do adjustments for next year. Is there anything I need to know about last-minute changes? I'm not very familiar with the event itself, so what kind of things would I need to know?

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Re: Trajectory B/C

Postby starpug » August 26th, 2009, 8:44 am

googlyfrog wrote:I might do adjustments for next year. Is there anything I need to know about last-minute changes? I'm not very familiar with the event itself, so what kind of things would I need to know?

I am unclear about what you would like to hear about, but in order to do the event well a general undertanding of physics is good. You are in B division though so the general approach is to build a device (see image gallery for ideas) and then test it and then change things to improve on the design. Woodworking is also a useful skill since the devices are generally built mostly of wood.
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Re: Trajectory B/C

Postby googlyfrog » August 27th, 2009, 11:42 am

Thanks. I will brush up on my physics to start!

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Re: Trajectory B/C

Postby Lily Essence » August 27th, 2009, 7:20 pm

Best brush up on wood-working as well as a sturdy device will probably give better and more consistent data then a shaddier built one. Trust me, my wood-working skills are horrible at best, and our device looked alot like something thrown and duck-taped together. But because me and my partner put alot of time into testing the thing, we still got 7th at state. :)
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Traj C

Postby Jazzy09 » September 11th, 2009, 7:12 pm

The smaller size of the device this year will make the event more difficult
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Re: Trajectory B/C

Postby GoldenKnightB » September 12th, 2009, 4:47 am

We have not received our rules yet. What are the major changes? :?:

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Re: Trajectory B/C

Postby Paradox21 » September 12th, 2009, 1:19 pm

GoldenKnightB wrote:We have not received our rules yet. What are the major changes? :?:

For div C. the device must fit in a 60 cm or less cube (70 for div. B). The biggest change is a bucket shot, which is basically launching into a 1 to 5 gallon bucket, that can be between 2 and 10 meters and up to 2 meters right or left of the center line. It is optional and you can only request it for your 2nd shot. And you have to hit the target on the 1st shot to qualify to request the bucket shot.
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Re: Trajectory B/C

Postby Jazzy09 » September 12th, 2009, 9:02 pm

^ yeah, I don't know how I feel about the bucket shot. I don't think it will have much of an effect
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Re: Trajectory B/C

Postby starpug » September 13th, 2009, 4:58 am

Paradox21 wrote:
GoldenKnightB wrote:We have not received our rules yet. What are the major changes? :?:

For div C. the device must fit in a 60 cm or less cube (70 for div. B). The biggest change is a bucket shot, which is basically launching into a 1 to 5 gallon bucket, that can be between 2 and 10 meters and up to 2 meters right or left of the center line. It is optional and you can only request it for your 2nd shot. And you have to hit the target on the 1st shot to qualify to request the bucket shot.

They're changing a lot, that must mean they don't want anyone to use the same device they've have used the past two years. They also probably want to present a challenge to the builders now that they have some experiance with the event.

Edit: They probably want to break up the bunch at the top at nats that hits both targets and has to be decided by the tie breaker too.
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Re: Trajectory B/C

Postby wlsguy » October 8th, 2009, 8:13 am

ncha13 wrote:What are some of the materials needed for trajectory


Take a look in the image gallery. It's a whole lot easier to see what you need by looking at what others have used. (a picture's worth 1000 words)

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Re: Trajectory B/C

Postby starpug » October 8th, 2009, 11:09 am

ncha13 wrote:What are some of the materials needed for trajectory

Well, you have to pick a material to make the body out of, Metal, Wood, PVC. You will probably have metal nails or screws on your device, unless you're welding :?. Like wlsguy said, look at the image gallery to see more specific designs.
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Re: Trajectory B/C

Postby gsimmons12345 » October 14th, 2009, 7:57 am

I am new i need to know what suplies to get please help me :? :? :?
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Re: Trajectory B/C

Postby starpug » October 14th, 2009, 5:17 pm

gsimmons12345 wrote:I am new i need to know what suplies to get please help me :? :? :?

One post above you gives some general materials.
ncha13 wrote:Really behind on building catapult need to start making progress :lol:

Behind? Our regionals aren't until March or April...
Get your facts first, then you can distort them as you please. - Mark Twain


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