joule mobile mass transporter
Moderators: kgudger, bfinio, MadelineB, Moderators
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
Sorry to bother you , but for the axles... What did you use ? Some of my friends said that they could it be sleeve tube? How do you make it fit with the CDs holes ( buy the exactly size with the holes??? or use some other thing to make it tight.. ?? )This probably the last concern I have, thanks for your patient..
Hi chickentown,
Yes, the car would go faster if it is less heavy. So basically, try to make your car as light as possible, but heavy enough so that it's steady; it won't topple when you put the 1 kg weight on it. I think your dimensions are ok.
For the axles, I'm not sure what I used because my dad helped me on this part. But, you can use a round stick that's about the same size as the hole in the CD and glue it together. And I think you can also use sleeve tubes that are maybe a bit smaller the size of the CD holes because you need to be able to fit the tube through the hole. If it's the exact size, then you wouldn't be able to put it through the hole.
Good luck! =)
Yes, the car would go faster if it is less heavy. So basically, try to make your car as light as possible, but heavy enough so that it's steady; it won't topple when you put the 1 kg weight on it. I think your dimensions are ok.
For the axles, I'm not sure what I used because my dad helped me on this part. But, you can use a round stick that's about the same size as the hole in the CD and glue it together. And I think you can also use sleeve tubes that are maybe a bit smaller the size of the CD holes because you need to be able to fit the tube through the hole. If it's the exact size, then you wouldn't be able to put it through the hole.
Good luck! =)
Amy =P
-
- Former Expert
- Posts: 1297
- Joined: Mon Oct 16, 2006 11:47 am
As far as string goes, you want something that is strong enough and is in scale with the size of your vehicle and that will withstand any wear it will get during your experiments.
Since you are dealing with 1Kg (2.2 pounds), something like a 12 to 15 pound test fishing line might work.
A lumber yard might give you a short piece of twine they provide to customers to tie down materials they sell if you want something larger in diameter.
Part of experimenting is scrounging things that will work that are available at little or no cost.
Since you are dealing with 1Kg (2.2 pounds), something like a 12 to 15 pound test fishing line might work.
A lumber yard might give you a short piece of twine they provide to customers to tie down materials they sell if you want something larger in diameter.
Part of experimenting is scrounging things that will work that are available at little or no cost.
-Craig
Things like plywood used from model shops would provide a strong, very lightweight car body. Very thin, very strong, and pretty aerodynamic.
You don't want the weight to destroy the car when it lands hard, so a little foam where the weight would hit could be helpful as well. I think a light, strong car would serve you well.
You don't want the weight to destroy the car when it lands hard, so a little foam where the weight would hit could be helpful as well. I think a light, strong car would serve you well.
Alan Lichtenstein, MD
Anesthesiologist
Mens et manus
Veritas
He who laughs last...Thinks slowest.
Anesthesiologist
Mens et manus
Veritas
He who laughs last...Thinks slowest.
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
ahhmee, thanks for your help, my car is looking pretty good now, but I am still unsure about the height of two stick of wood in the middle of the body car ( pulley stand )-- how high they need to be if the 1 kg mass has the height of 7cm ??? In addition to the 10 cm height drop and the string length to hold the mass, so do you think 25 cm height is appropriate for the two wood sticks???
Once more, thanks all for your helps
Once more, thanks all for your helps
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
hi ahhmee, I tested my car, it woudn't move , I don't know why?? Is that right that you put the axles under the body car right??? It 's not moving but when I lift the back up a little bit then the wheels start to move. But it is not moving when the wheels on the ground??? Would it because my axles are too low ??? cause under the body I put a piece of wood that have holes then stick the axles through the holes... ?? Is it right??? Oh my god the due day is tomorrow, I don't know what to do...
-
- Posts: 29
- Joined: Sun Jan 21, 2007 2:42 am
I think I figured out why, I think it because the axles are too low, because I did not the piece of wood with holes aside the body wood but under it.. But I don't think I have time to fix. Ok well, tomorrow only the predue day which it have to run 2 m in order to have 20 points, so i'll just take 10 points then fix it on the weekend.... Tomorrow I have a bigg Benchmark for Precal so I need to study