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Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 1:07 pm
by robotman
to do the string falling off you have a spool and pin in your front axle with your desired amount of string
(i will have a video in a couple of minutes)

and for your back axle have a string that would also fall off and a wingnut brake which would open on the way out and wind back and lock the axle

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 1:26 pm
by winneratlife
Oh, a brake. I guess that would work with a lot of fine tuning.

Still, no one has told me exactly the physics behind the forward motion of the car!

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 2:10 pm
by cypressfalls Robert

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 2:54 pm
by Fireheart347
Can I clarify something? Is there no specific target distance for the vehicle to travel, it just has to be within the 7-8m, and come as close to the starting point as possible?

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 2:58 pm
by cypressfalls Robert
yea, thats correct

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 4:45 pm
by TECspin
What do you have to do to get the lane bonus? Is it like electric vehicle where the the wheels cannot go outside of the middle of the tape?

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 5:23 pm
by Paradox21
What do you have to do to get the lane bonus? Is it like electric vehicle where the the wheels cannot go outside of the middle of the tape?
The fixed point that you have along the perimeter of your vehicle that is within 1 cm of the running surface needs to stay within the 1.5 m track lane to get the bonus.

Re: Mousetrap Vehicle C

Posted: December 17th, 2009, 6:25 pm
by robotman
Ok here is the video i promised
In browser playing
For better quality download the wmv file Here
(its an auto download )

Friction

Posted: December 19th, 2009, 2:09 pm
by zcshiner
Is anybody doing anything about axle friction. Bushings, Bearings, ect? If so, what size ones are you using and did you make them or buy them?

Re: Mousetrap Vehicle C

Posted: December 23rd, 2009, 3:51 pm
by ktrujillo52
I just cut out a small piece of a straw and put that between the wheel and the hinge thing. I thought I was going to have to use some sort of lubricant but it actually works pretty well.