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@Johnbeere posted:

On another note, it's only really necessary to drive one axle - the drive rods tend to work fine for transmitting power.

The extra gears were just from playing with the parts.

It's a shame the lego motors run so slow.   With the worm drive you lose a lot of speed,  but outside of a transverse mount arrangement for the motor,  I don't see a way around the worm arrangement.  And the modern lego motors are way too long for that, and the older motors are really low power.

@coach joe posted:

Is that all LEGO with "O" gauge wheel sets?

Here's a LEGO helicopter next to a die-cast Canada Air Rescue copter that I believe is 1:60.  I imagine the LEGO chopper as being a commercial commuter type, 6-10 passenger capacity.  That accounts for the size.IMG_0013

Way To Go Coach Joe! Canada Air Rescue copter is my Favorite of all time livery.... and US Coast Guard, and Twin Canadair CL-415 Water Drop Firefighter! (great idea, I'm in, got one on the way! Great Idea, <salute Joe>

This turned up in my YouTube recommended about an hour ago... a couple of hours ago*

Most of this is only really relevant to dedicated Lego operators, but I recalled talk on this thread about building O-gauge compatible powered units. Round about 6:24 in the above is something that may be of interest.

Being that that aspect of the above project is in development, it might be possible to ask if there is a possibility of an O-Gauge compatible variant (most likely in the form of 'O' compatible wheel/axle sets) being added to their motorized bogie project. It could potentially be useful to more than just Lego-derived trains.


Unfortunately the lego wheels have always been plastic except for the metal 9v track train motors,  which of course are L gauge.   I read the article about this on Brick Model Railroader,  and one of the main reasons the author was excited about the track was the ability to eliminate the batteries.  He said constantly dealing with batteries was a major stress point during a public show.   So despite some folks saying dead rail is the future,  someone was has dealt with dead rail and batteries for years says the opposite.

@Johnbeere posted:

It's going to be necessary to gear up between the motor and worm somehow - if you don't, the locomotive will be incredibly slow. I actually used a worm drive in my Lego B6, with a gear ratio of 4.8:1, it's very slow. The setup you have above is 24:1, about 5 times slower than my B6. Here's a Lego gear ratio calculator, the closer you get to about 1:1 the better:

I didn't realize how slow the lego motors turn.  What a pain!  I was doing some math today, and gearing up any of the lego motors to go an appreciable speed is going to be challenging.  The only thing that works in my favor is the diameter of the drive wheels. 

It looks like I will need to change from technic lift arms to technic bricks get enough length.   Getting power to at least one axle without the speed loss incurred with a worm gear is going to complicated.

What about a chassis like this?

The idea to build Lego trains capable of running on O gauge track is pretty appealing to me, I might even consider seeing if I can convert some of my Lego trains to O gauge. I see several advantages to it... The track will be closer to scale, will be much cheaper, and it means that my Lego trains can run on my O gauge track. Currently, I don't even have enough Lego track to sit all my trains on at once, let alone run anything.


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So I've designed a O Gauge Lego axle to be imported to Studio to help design O gauge Lego trains. I'm going to experiment tomorrow how 3D printing the wheels goes, it might be a viable method to make suitable wheels.

Here's the axle I designed:

Studio renders it a bit weird, but no big deal.

I've attached the file for the model of the wheelset, you need to import it to Part Designer and then export it to Studio.


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