Kierna

Mindstorms Police Motorcycle

9 posts in this topic

I have the novel idea of making this chase my power functions superbike. I deliberately made it somewhat bland and unnatractive, like real police vehicles.

The target:

image.jpg

The superbike can have LED lights, with any colour lens, installed as tail lights.

One sensor on the police motorcycle is for color, to chase.

The other, an accelerometer, for balance.

One NXT servo motor, for power, geared up 40:8 (5x). theoretical speed up to 6.5 mph.

One NXT servo motor for steering, with very high steering lock, some 50 degrees from center each way.

About 20 degrees of steering rake,1 unit offset, around 3 units trail.

Front fork suspension (represented in this image)

Power motor acts as rear single-sided-swingarm suspension. Yellow extra hard shock absorber. Very low center of gravity. 45 degree maximum lean angle.

Copper.jpg

Proof of concept: (I didn't make this, it shows that a NXT bike can balance itself)

http://www.youtube.com/watch?v=VxiOy4QzD7I

Edited by Kierna

Share this post


Link to post
Share on other sites

ahah dude you're a genious :D i love the auto balance that it has!

Share this post


Link to post
Share on other sites

Very cool, looks to work really well, Its nice to see it almost lose control then catch it just in time and rebalance, nice one

Share this post


Link to post
Share on other sites

Just clarifying, I didn't build the bike in the youtube video, it's just proof a Mindstorms bike can self balance.

I'll build this when I have a spare $200 AUD. I just spent $150 on bricklink for parts for my power functions bike design...

Share this post


Link to post
Share on other sites

Fantastic!!! I will post it at my page:)

Sad that we don have bigger lego wheels for larger scale:(

Share this post


Link to post
Share on other sites

Fantastic!!! I will post it at my page:)

Sad that we don have bigger lego wheels for larger scale:(

Go ahead, I hope your visitors like it!

You are right, the big motorcycle wheels are a very large scale, 1:6 or so.

I think we bike builders deserve a big scale though, because it is very dificult to achive full detail in a motorcycle MOC of any scale.

Have you seen this thread? It covers building very large scal tyres from smaller lego parts.

http://www.eurobricks.com/forum/index.php?showtopic=42681&st=0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.