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Andrew Mollmann commented on the post, Supercapacitor Power Packs 6 years, 1 month ago
Glad you enjoyed the article. 24V DC in to the track, yes. Then current limiter and voltage regulator to feed the motor controller a steady 10ish volts.
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Andrew Mollmann wrote a new post 6 years, 4 months ago
Continuing our theme of interviewing builders of exception MOCs, we’re back with European builder Mateusz Waldowski. Mateusz built this awe inspiring bullet train, the Alstom Pendolino ED250 PKP Intercity. We m […]
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Andrew Mollmann wrote a new post 6 years, 5 months ago
We’re’ back again with our second builder interview, this time we’re going across the pond with 39 year old Swiss builder Beat Felber. Beat built this awe inspiring Santa Fe 5000 class steamer.
BMR: Tell us […]
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Andrew Mollmann wrote a new post 6 years, 6 months ago
This is something new BMR is piloting, interviews with builders of exceptional MOCs. Provided there are enough new builds, we hope to have several of these every month.
The builder for our first interview is […]
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Andrew Mollmann commented on the post, Premium Instruction Restocks and New Decals Added to the BMR Store 6 years, 8 months ago
Funnily enough, I don’t think the Gulf tank car decal was one of the ones I shared with Cale! Several of the box car designs are from me though.
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Andrew Mollmann commented on the post, Third party track – A review of the options 6 years, 10 months ago
I see, that is something I missed, I will update my table today sometime. (Done)
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Andrew Mollmann wrote a new post 6 years, 10 months ago
Evolving your home layout beyond LEGO’s standard track elements has never been easier. First there was ME Models and now with companies such as BrickTracks, 4D Brix, and TrixBrix, competition is fierce. Even home […]
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Andrew Mollmann commented on the post, Union Pacific SD70ACe Heritage Fleet – 6 Locomotives! 7 years, 2 months ago
Sorry about that, fixed.
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Andrew Mollmann wrote a new post 7 years, 2 months ago
One of the things I dislike about modeling real locomotives and rolling stock is how dull and monochromatic the colors tend to be. I’m always on the lookout for bright and colorful things to build and when I came […]
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Andrew Mollmann commented on the post, Railfanning, June 2017 7 years, 4 months ago
7W master race
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Andrew Mollmann commented on the post, Supercapacitor Power Packs 7 years, 7 months ago
I can certainly write a bluetooth article. Always happy to convert more people to the dark side.
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Andrew Mollmann wrote a new post 7 years, 7 months ago
As an electrical engineer, I have always found lithium batteries to be…. amusing. They’re extremely volatile; if overcharged, they explode. If over-discharged, they explode. If charged too quickly, they explode. […]
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Andrew Mollmann commented on the post, Hybrid PF/9V Systems 7 years, 8 months ago
It kind of happened gradually. First I did a LiPo that charged from 9v track using the normal train controller. Then I switched to diode protected AA battery packs /w PF. Next I added voltage regulators. Then I […]
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Andrew Mollmann wrote a new post 7 years, 8 months ago
Following up on my previous article introducing LEGO’s 9V system and their Power Functions (PF) system, I’m going to go a little more in depth about building hybrid systems that utilize both PF battery packs and […]
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Andrew Mollmann commented on the post, Battery Powered vs. Track Powered 7 years, 9 months ago
Picking up track power is the hardest part honestly. I’ve done some tricky stuff like decoupling the motor inside the shell from the pickups, and instead using the pickups to power a Bluetooth motor controller. […]
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Andrew Mollmann wrote a new post 7 years, 9 months ago
Young and new recruits to the LEGO train scene will never have known anything other than the current generation of power functions. Battery packs coupled with infrared receivers and remote controls, each taking up […]
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Andrew Mollmann commented on the post, Keeping it Rolling (Smoothly) 7 years, 9 months ago
I set the bearing on a sturdy workbench while I warm up the Technic brick with a hot air gun, not a ton, maybe to about 120-150F, and then I place the Technic brick on top of the bearing. Then I use something […]
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Andrew Mollmann commented on the post, Keeping it Rolling (Smoothly) 7 years, 9 months ago
The only thing to watch out for is making sure the 2 bearings on each axle are perfectly parallel. If they’re even the slightest bit off, you might as well use brass tubes.
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Andrew Mollmann became a registered member 7 years, 9 months ago
