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Unanswered Questions

9
votes
1answer
327 views

Are these bricks old Lego/Duplo clones?

Can anyone identify these bricks, which I suspect are Lego/Duplo clones. They may be more than 30 years old. I bought them on ebay as Betta Bilda from Lego/Duplo dealer. Some BB was included, but ...
7
votes
0answers
204 views

Step 160 on carousel 10257

I'm struggling with step 160 where I use white "hinge" connectors to connect the carousel platform sections. It seems to create too much pressure and the platform breaks apart. Grateful for any tips.
6
votes
0answers
85 views

High Torque Subtractors

I would like to use a Subtractor in my next RC Lego tank, as it enables the vehicle to turn on the move, as opposed to stopping and then turning. Unfortunately, the subtractors I have tested so far ...
6
votes
0answers
97 views

Are there any LEGO “MacGyvering kits” for the on-the-go LEGO fan?

I keep a small box of electronic parts in the car, for times when I get an idea I want to try out, or have a quick gizmo that I need to solve a problem. I also have a box of mechanical parts, like ...
6
votes
0answers
152 views

Where does the EV3 software store its crash reports?

I cannot find where the crash reports generated by my EV3 software are stored. I have looked where it tells me to, but I can't find any.
6
votes
1answer
158 views

How can body segments be moved to precise angles in snake robot?

I want to create an EV3 robot similar to this: I've glanced at the mentioned papers. To me it seems that some simpler equations to govern the motors will work also. I have 9 segments, articulated by ...
5
votes
0answers
148 views

What are the common quality issues seen in collectible minifigs?

TLG is currently seeking specific feedback on what quality issues may be present within the Collectible Minifigures line so that these issues can be addressed. What are the common issues that you have ...
5
votes
0answers
485 views

Building instructions: Robot Spider Pen by Ricardo Oliveira

Some time ago I found the following youtube video by Ricardo Oliveira of a small NXT plotter that crawls over a whiteboard. It has two strings that can be shortened through coils and with this, it ...
5
votes
0answers
53 views

Is it possible to use the Dexter WiFi Sensor with Robot C?

My wife bought me a Mindstorms NXT system a few years ago and I bought a Dexter WiFi sensor for it, by the time I got a chance to work with it, I found out the sensor had been "retired" and that the ...
5
votes
0answers
297 views

PC To NXT Brick via Bluetooth

We have a fully-working java programme which can connect to another computer and can send messages from this(both sides run java and we used SPP Server and Client), however when trying to connect to ...
5
votes
1answer
210 views

How much tension can I expect to get out of a lego chain before it starts to give away?

Assuming I am using the technic chain links to make a chain, how much force can I expect to be able to get out of the chain before it breaks? Suppose I am using a 16t gear to directly drive a 24t ...
5
votes
1answer
119 views

How to glue a LEGO tree decoration in a way that's not permanent, to prevent accidental disassembling?

I have a sweet LEGO Santa Claus and few other builds that would look cool as decorations on Christmas Tree. Sadly, it would probably break if I would try to hang it. It can stand all right, but is not ...
4
votes
0answers
60 views

String thickness comparison

I am currently working on a project which uses a massive array of strings linking little levers. I am currently using the "thin" type string as it is the only type I have, but I am running into ...
4
votes
0answers
129 views

Compatibility of maxi sized mega blocks

Maxi-size mega blocks are larger then duplo. As far as I can tell they have 2x the stud pitch and much larger studs. What if-any compatibility is there between the maxi-sized mega blocks and either ...
4
votes
0answers
189 views

Metal Spring for LEGO MOC Simple Suspension

What is the most appropriate dimension (e.g. 20mm x 3.33mm, 5N/mm) of the metal spring for this LEGO MOC Simple Suspension so that it will not cause damage to the LEGO part surrounding it?

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