Simple Technic/Ball Bearing Trucks?

[ejayb]

I've looked on Flickr and Eurobricks but I've not been able to find any examples of simple single and double axle, Technic/ball bearing trucks.

I just want something to replace the standard wheel assemblies.

Without having a set in my heads, I can't compare the height so I'm unsure how many plates are needed to match the standard wheel assemblies & couplers.

[patje]

Maybe this can help you

trains axels

bougies

[zephyr1934]

On 12/30/2020 at 2:41 AM, ejayb said:

Without having a set in my heads, I can't compare the height so I'm unsure how many plates are needed to match the standard wheel assemblies & couplers.

Ignoring any decoration to make the trucks look good, the following stack:

• 4x4 turn table (2 plates)
• 4x6 plate
• 1x2 technic brick with ball bearing and train wheels (or tecnic axle wheels)

Is one plate shorter than:

• 4x6 bogie plate
• standard lego train wheel assembly

So if you did a one for one swap, your train would be one plate closer to the track. Which is great when designing from scratch since the normal lego train wheels are so tall, but you might need a one plate spacer if you are retrofitting.

 

 

 

[ejayb]

45 minutes ago, zephyr1934 said:

Ignoring any decoration to make the trucks look good, the following stack:

• 4x4 turn table (2 plates)
• 4x6 plate
• 1x2 technic brick with ball bearing and train wheels (or tecnic axle wheels)

Is one plate shorter than:

• 4x6 bogie plate
• standard lego train wheel assembly

So if you did a one for one swap, your train would be one plate closer to the track. Which is great when designing from scratch since the normal lego train wheels are so tall, but you might need a one plate spacer if you are retrofitting.

 

 

 

Thanks Zephyr, that's exactly what I need. 

Do you also add a plate below the 1x2 technic bricks to help strengthen the assembly? 

[zephyr1934]

22 hours ago, ejayb said:

Thanks Zephyr, that's exactly what I need. 

Do you also add a plate below the 1x2 technic bricks to help strengthen the assembly?  

 

Excellent.

I try not to build below the technic bricks for clearance reasons. If you build enough strength above (e.g., a 4x6 plate) you should be fine. Also, if you are building your own wheel assemblies, you can always use a 1xN technic brick or technic beam. At worst, Design -> Build -> Test -> Repeat