shifting test - a car with automatic gearbox - vk-den2

a car with automatic gearbox. built by lego mindstorms RIS 2.0. two motors were applicated to transmission and one motor was used to change gears. included three gears

upg vrs: http://www.youtube.com/watch?v=0xHpQIeO7SQ
shift test:
http://www.youtube.com/watch?v=Mjo-aydU_Lc&mode=related&search=

Category:

Autos & Vehicles

Tags:

• lego
• mindstorms
• invention
• robotic
• system
• transmission
• robot
• car
• automatic
• vitesse
• vites
• gear
• gearbox
• araba
• oyuncak

[KingWilli93]

wow....nice gearing, but not very effective is it?

It nearly stops in the transition from the 1st to the 2nd gear

[bencizdim]

right, because the machine doesn't have much momentum, it stops when the wheels are out of torque while changing gear

[tenkikun]

it works fine when you get it up in speed ^^

try making the speed of the 2nd gear to first gear and then you can get a superfast 3rd gear!

[bencizdim]

but if i do it, torque of motors isn't enough, because i tried several combinations of gear ratios

[Wormtail81]

I'm not sure how it works, or even it it would work in the real world (like in a real car), but kudos and way to think big.

[bencizdim]

yes, it's too big but i had done second version of this car and it is a bit smaller than this, but i cannot make smaller due to strength

[sbhusbhtk]

i got a donut

[iDan245]

try to use lego nxt 2.0, the plc is way better than the old one

[corotor12345]

ehmm actually, it works that way... cant you see the light readin the rotational pallet with white bricks?

[LegoFan970]

ive had so much trouble trying to make one of these? how does it work?

[warriorider303]

can u make a a vid of it gearing down, like make it start off on flat ground then make it go up a slope so we can see it gearing down, because taht would be awsome

[ViktorBerg]

How about making the RCX switch the gear to lower based on the readout of a rotational sensor? In essense, if the vehicle slows down too much, it means it reached a slope or something. Changing gear to lower would make it easier for the motor.

[yoman468]

that is kind of off subject