Trajectory B/C

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HELPHELPHELPHELPHELPHELP

Postby trentendo » April 21st, 2010, 5:43 pm

I was wondering if we were allowed to impound duct tape with our trajectory just in case something broke. I looked through the rules but they didn't say anything about what you could and couldn't impound. HELP!!!!!!!!!!!!!!!!!!!! :?: :?: :?: :?: :?: :?:

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Re: HELPHELPHELPHELPHELPHELP

Postby starpug » April 21st, 2010, 5:59 pm

I was wondering if we were allowed to impound duct tape with our trajectory just in case something broke. I looked through the rules but they didn't say anything about what you could and couldn't impound. HELP!!!!!!!!!!!!!!!!!!!! :?: :?: :?: :?: :?: :?:
You can impound almost anything you want for fixing the device. I always have duct tape, spare tubing, a screwdriver or two, and maybe a spare screw or two around just incase.
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Re: Trajectory B/C

Postby zyzzyva980 » April 21st, 2010, 6:17 pm

If the rules don't say you can't impound it, go ahead. Our team brought practically everything we needed to build the machine all over again (in cases of extreme emergency!) So, yes, duct tape is allowed. Bring anything you think you might need at competition. Be Prepared.
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Re: Trajectory B/C

Postby trentendo » April 21st, 2010, 7:15 pm

thankyouthankyousosososososososomuch!

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Re: Trajectory B/C

Postby colombiano » April 21st, 2010, 7:35 pm

ohh yeah we have a whole bin of extra things and back up materials
i guess you can never be too prepared
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Re: Trajectory C

Postby thepro » April 22nd, 2010, 8:30 am

I read the discussion about triggers that you guys have had before..but it didn't answer my question. My catapult's [picture attached] trigger is the white bar with holes every centimeter. When we pull a string attached to the bar, it releases the arm which shoots the golf ball.
The rules say that the device must fit within a 60X60 cube prior to all launches, but when we load the catapult to some of the lower holes the white "trigger arm" extends out of the box. Is this considered part of the device? or is it part of the trigger..and thus allowed to extend out of the 60X60 cube?
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Re: Trajectory C

Postby starpug » April 22nd, 2010, 8:56 am

I read the discussion about triggers that you guys have had before..but it didn't answer my question. My catapult's [picture attached] trigger is the white bar with holes every centimeter. When we pull a string attached to the bar, it releases the arm which shoots the golf ball.
The rules say that the device must fit within a 60X60 cube prior to all launches, but when we load the catapult to some of the lower holes the white "trigger arm" extends out of the box. Is this considered part of the device? or is it part of the trigger..and thus allowed to extend out of the 60X60 cube?
Image
well to start a standard golf ball is not one this years allowed projectiles, you can use either a tennis ball, a racquetball, a ping pong ball, or a practice golf ball. So I hope that you are referring to a practice golf ball not an actual regulation one.

To answer your question I would consider that out of the box.
Get your facts first, then you can distort them as you please. - Mark Twain

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Re: Trajectory C

Postby Phenylethylamine » April 22nd, 2010, 3:55 pm

I read the discussion about triggers that you guys have had before..but it didn't answer my question. My catapult's [picture attached] trigger is the white bar with holes every centimeter. When we pull a string attached to the bar, it releases the arm which shoots the golf ball.
The rules say that the device must fit within a 60X60 cube prior to all launches, but when we load the catapult to some of the lower holes the white "trigger arm" extends out of the box. Is this considered part of the device? or is it part of the trigger..and thus allowed to extend out of the 60X60 cube?
Image
The picture isn't actually visible- for the [img] tags to work, the image has to be hosted at a static location, for which mail.google.com accounts unfortunately don't work.

The rules aren't particularly clear on this point. I'd say, if it's a fixed piece of your device- even if its only role is triggering the launch- most event supervisors will probably consider it part of the device, rather than part of the trigger, and insist that it fits within the 60 x 60 x 60 cube. If it's detachable and really only necessary to trigger the launch (i.e., if removed, the device could still be triggered by hand), then it would probably be considered part of the triggering mechanism.
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Re: Trajectory B/C

Postby AlphaTauri » April 22nd, 2010, 4:22 pm

From way back in the thread, but same principle here:
IF you want, just to be safe, you could rig a spring or something of the like to pull the metal rod back into the 60cm cube after the launch (i.e. you pull the string and the metal rod backwards, firing the catapult, then you let go of the string and the spring pulls the rod back into the cube). I don't know how or if this is going to affect the rest of the catapult, so proceed carefully if you decide to follow my advice.
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Re: Trajectory B/C

Postby Phenylethylamine » April 22nd, 2010, 5:55 pm

From way back in the thread, but same principle here:
IF you want, just to be safe, you could rig a spring or something of the like to pull the metal rod back into the 60cm cube after the launch (i.e. you pull the string and the metal rod backwards, firing the catapult, then you let go of the string and the spring pulls the rod back into the cube). I don't know how or if this is going to affect the rest of the catapult, so proceed carefully if you decide to follow my advice.
This is actually exactly what we have. Our launch mechanism involves a threaded rod (I described it a page or so back), and it's held in place by a thin bungee cord that springs it back to within the 60 x 60 x 60 cube after launch.
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