Motor Selection for DIY Engine?

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sircastor

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I am relatively new to model trains (My father was big into N-Scale, but that was 20 years ago) and I'm interested in building my own engine - In part because it's gonna be a while before I can grow beyond my LGB starter engine, but also because I'm an electronics and 3D Printing enthusiast and I like making things.

I realize that I can buy a motor block from Bachmann or LGB and that'd get me started, but I'd like to start at a component level. I haven't been able to find specs for the Bachmann motors. G-scale tends to run ~12v-24v in a simple DC setup. I came across some other info where someone was using a pair of 6v motors. So I'm curious if anyone has any recommendations for motors? I'm also interested in a DCC setup eventually, but I need some more equipment before I get too far into that.
 
sircastor said:
I am relatively new to model trains (My father was big into N-Scale, but that was 20 years ago) and I'm interested in building my own engine - In part because it's gonna be a while before I can grow beyond my LGB starter engine, but also because I'm an electronics and 3D Printing enthusiast and I like making things.

I realize that I can buy a motor block from Bachmann or LGB and that'd get me started, but I'd like to start at a component level. I haven't been able to find specs for the Bachmann motors. G-scale tends to run ~12v-24v in a simple DC setup. I came across some other info where someone was using a pair of 6v motors. So I'm curious if anyone has any recommendations for motors? I'm also interested in a DCC setup eventually, but I need some more equipment before I get too far into that.
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The motor will depend on how you control it. A simple preset speed control powered from batteries is the easiest. Once you have that working you can then move onto rail power and/or remote control. A loco needs space to put your electronics in.
Do you intend to run on rail power (voltage preset) or battery (you set the voltage). The size of motor depends on what load it has to move. For a simple loco I use N20 or yellow TT, suitable for narrow gauge slow running.
 
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sircastor said:
I am relatively new to model trains (My father was big into N-Scale, but that was 20 years ago) and I'm interested in building my own engine - In part because it's gonna be a while before I can grow beyond my LGB starter engine, but also because I'm an electronics and 3D Printing enthusiast and I like making things.

I realize that I can buy a motor block from Bachmann or LGB and that'd get me started, but I'd like to start at a component level. I haven't been able to find specs for the Bachmann motors. G-scale tends to run ~12v-24v in a simple DC setup. I came across some other info where someone was using a pair of 6v motors. So I'm curious if anyone has any recommendations for motors? I'm also interested in a DCC setup eventually, but I need some more equipment before I get too far into that.
Click to expand...
For this scale if you want a good beefy motor then JH takes some beating, a gearbox fitted one will make your first loco so much easier. I used them exclusively for my 0 gauge scratch builds and they are very reliable and powerful..

Motor & Gearboxes — MSC Models

www.mscmodels.co.uk www.mscmodels.co.uk
 
sircastor said:
I am relatively new to model trains (My father was big into N-Scale, but that was 20 years ago) and I'm interested in building my own engine - In part because it's gonna be a while before I can grow beyond my LGB starter engine, but also because I'm an electronics and 3D Printing enthusiast and I like making things.

I realize that I can buy a motor block from Bachmann or LGB and that'd get me started, but I'd like to start at a component level. I haven't been able to find specs for the Bachmann motors. G-scale tends to run ~12v-24v in a simple DC setup. I came across some other info where someone was using a pair of 6v motors. So I'm curious if anyone has any recommendations for motors? I'm also interested in a DCC setup eventually, but I need some more equipment before I get too far into that.
Click to expand...
Yep, the big issue with scratchbuilding in this scale is the gearbox, so I would advise settling on that first, then I have found that over here in the UK, the gearbox manufacturers often have their own ideas and experience of suitable motors :nod::nod:
 
Big powerful motors are great, but they need weight to transfer the pulling power to the rails. So a small engine with a big motor may not be able to pull a lot of cars due to no place to add weights. In the past MFG's used lead as it was easy to cast and was heavy. Now it is outlawed by most countries.
 
Dan said:
Big powerful motors are great, but they need weight to transfer the pulling power to the rails. So a small engine with a big motor may not be able to pull a lot of cars due to no place to add weights. In the past MFG's used lead as it was easy to cast and was heavy. Now it is outlawed by most countries.
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Lead is readily available in most European countries (appreciating that our friend who asked the question is in the USA) as it is frequently used for roofing flashings and valleys etc
 
Rhinochugger said:
Lead is readily available in most European countries (appreciating that our friend who asked the question is in the USA) as it is frequently used for roofing flashings and valleys etc
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Less frequently now, due to the stuff always getting nicked!
 
Rhinochugger said:
Yep, the big issue with scratchbuilding in this scale is the gearbox, so I would advise settling on that first, then I have found that over here in the UK, the gearbox manufacturers often have their own ideas and experience of suitable motors :nod::nod:
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Which is why I suggested JH, good motors and well built gear boxes, well over the top for my 0 gauge projects, but fine control and being pre built motor and gear box drive fell into every scratch/kit build I did using them.
 
dunnyrail said:
Which is why I suggested JH, good motors and well built gear boxes, well over the top for my 0 gauge projects, but fine control and being pre built motor and gear box drive fell into every scratch/kit build I did using them.
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Yep, I have their G1 offering in my Yeti - but remember the enquirer is the other side of the pond :nod::nod:
 
TT Motor DC Gearbox Motor Dual Shaft 200RPM DC 3-6V Gear Motor
Find those ones at ali express.
They are built with metal gears or plastic in 1to20 to 200 ratio from 3v to max 12v dc

For 45mm track i was surprised how strong they are.
And the axle size is next to perfect to attach wheels on it.

One experiment was with a one engine loco, it could after i put more weight (two bricks) on the loco haul more than 12.5 kilo's
I had only three wagons, so four bricks was all what one wagon could hold.
The dc motors are fitting in perfectly in a 22mm aluminium u profile.

The would be frame for my AA20 could fit 4 of them.
Indeed you must put in more weight on the loco, lead is a pretty and heavy metal. shooting ranges are often filled with that stuff.
Be carefull with melting....stay up wind and cast outside!
Gold is per kubik cm heavier than lead, i dont think irridium is allowed:cool:
Maybe this could be of some help? my two cents.
Best Igor
 
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