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Unanswered Questions

100 questions with no upvoted or accepted answers
13
votes
1answer
593 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 ...
12
votes
0answers
130 views

Is it possible to dismantle and refurbish an original 870 Technic motor?

I have a couple of ancient 870 motors (the 4.5v ones) that run but don't sound great. I've looked for, but can't find, a guide on how to dismantle them. I'd like to either get in there and clean/...
9
votes
0answers
228 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.
8
votes
0answers
177 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 ...
8
votes
1answer
264 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 ...
7
votes
0answers
174 views

Can anyone identify the brand of this non-LEGO brick

Hi folks I was hoping someone out there may recognise the brand of this block I found in the garden. I have been searching but the closest I can find are Locblocks - however this appears to have a ...
7
votes
1answer
226 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 ...
6
votes
0answers
66 views

Is it possible, to remove a parted out set from Bricklink inventory?

I have an inventory in Bricklink, in which I accidentally parted out (with the consolidation option) two sets instead of one. Is there a way to remove the pieces of the second set somehow without ...
6
votes
0answers
163 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 ...
6
votes
0answers
170 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.
5
votes
0answers
59 views

Replace Battery in LEGO Dino Attack Light-Up T-Rex Head?

Is it possible to replace the battery of the LEGO Dino Attack T-Rex heads? There's a button on the top of the head that makes the eyes and tongue light up red. There doesn't seem to be any obvious ...
5
votes
1answer
320 views

Late 1970s hospital and helicopter building brick set

I'm afraid I don't have a picture, but I am trying to identify a Christmas gift I fondly remember receiving as a child circa 1979. It was a 3-foot box of building bricks and the front picture showed ...
5
votes
0answers
550 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
58 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
331 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 ...

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