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Old 11-17-2012, 02:42 PM   #1 (permalink)
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Need LEGO construction help

I built this 4-wheeler, and everything is good, except that I can't figure out a way to build functional handlebars/steering. Right now, it's got a static handlebar, but I'd like to build ones that turn with the wheels.





Anyone have suggestions?
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Old 11-17-2012, 02:54 PM   #2 (permalink)
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do you have anymore of the t bars? If so make a motorcycle fork.

Edit: Never mind that won't work.
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Old 11-17-2012, 03:00 PM   #3 (permalink)
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How about a push/pull lever on one side?
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Old 11-17-2012, 03:07 PM   #4 (permalink)
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On your gray crossbar (the one not at the front) stick two extended (1 block on 1 end, 2 blocks other end) connector pegs and tack on a 3 hole bar, leaving a spot in the middle of the two, then create an axle for your handle, at the end of which has a cross block with a connector peg sticking out. Turning the axle should turn the cross block/peg which will push against one of the bushings and hopefully turn your vehicle. Make sure you use the correct connector pegs in your turning system to ensure smooth, low friction turning (reduce force needed to turn handle).

I wish I could draw you pictures or word it better but I've always referred to Lego pieces as "that little piece there" or "the long/short one with X holes/studs".

Hope this helps:
Lego Spare Parts Catalog 2012
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Old 11-17-2012, 10:46 PM   #5 (permalink)
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Your assembly, as it sits, is too compact for a rack and pinion. Do you have any ball and sockets?
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Old 11-17-2012, 10:55 PM   #6 (permalink)
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lego has a miniscule gear. it just might be small enough. not sure if its teeth has enough reach when you angle it at 45 degrees though, as you might want to angle it for a better look.

part 2 in his picture

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Old 11-17-2012, 11:15 PM   #7 (permalink)
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Originally Posted by heinous View Post
lego has a miniscule gear. it just might be small enough. not sure if its teeth has enough reach when you angle it at 45 degrees though, as you might want to angle it for a better look.

part 2 in his picture

http://i.imgur.com/f1rXK.png
I thought this same exact thing. I'd have to mess around with some of my Legos to be able to tell you how I'd do it.
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Old 11-18-2012, 12:06 AM   #8 (permalink)
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Isn't there a u-joint piece for angling axles?
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Old 11-18-2012, 12:18 AM   #9 (permalink)
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There was a steering joint part back in the day..
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Old 11-18-2012, 01:42 AM   #10 (permalink)
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I honestly thought you made one big enough to ride.
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