Author Topic: Model size generator ..........  (Read 807 times)

toolznthings

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Model size generator ..........
« on: October 19, 2019, 01:19:20 AM »
Hello All,

I've searched without any results for a model size generator that I can run with one of my engines.
Seen several different one's, but not finding where to purchase.

Thanks !

Offline Roger B

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Re: Model size generator ..........
« Reply #1 on: October 19, 2019, 07:41:07 AM »
Others on here will have to suggest US suppliers however there are several options. A model DC motor works well. The ones designed for model boats seem to have a suitable speed range. You can make a housing to make it look a little more authentic as in the picture below. Here are a couple of European suppliers to give you an idea of what is on offer:

https://www.rcm-machines.com/en/set-of-casting/stuart-dynamo,-set-of-castings/rcm34-50-74070

http://shop-holzapfeldampf.ch/contents/de-ch/d390.html
Best regards

Roger

Offline Jasonb

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Re: Model size generator ..........
« Reply #2 on: October 19, 2019, 07:44:27 AM »
P.M Reseach do one that should be easy to get in the states

Offline Zephyrin

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Re: Model size generator ..........
« Reply #3 on: October 19, 2019, 08:08:29 AM »
Yes a DC motor works, a "slow " running one is the best choice, as in screenwipers...
I did a model generator with that a few months ago.
<a href="https://www.youtube.com/watch?v=t6jBgAIVftc" target="_blank">http://www.youtube.com/watch?v=t6jBgAIVftc</a>

Offline TobyTetzy

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Re: Model size generator ..........
« Reply #4 on: October 19, 2019, 08:42:16 AM »
Hi,

my father built three of these generators based on the idea of ​​TS Modellbau.
A DC motor is used by an e-scooter.

Here are some infos about it.

12 Volt at 1300 U/min and round about 40 Watt.

https://www.ts-modelldampfmaschinen.de/gussteilesaetze-generatoren/

https://www.ts-modelldampfmaschinen.de/fertig-aufgebaute-generatoren/generator-d80.html

We had make some drawings of it.

Greeting Toby

Offline Allen Smithee

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Re: Model size generator ..........
« Reply #5 on: October 19, 2019, 05:56:03 PM »
A brushless DC motor can be used as a 3-phase alternator of you're not fussed about squeezing the 99th percent of efficiency out of it. Just buy any cheap brushless motor from banggood or hobbyking and six diodes. Connect as below:



If you want refinement add a smoothing capacitor.

You can make educated choices about the motor that best suits your needs if you know what voltage & current you're after and what operating RPM you're looking for. The main thing is to know what current you'd expect your load to draw - ensure the motor and diodes are rated for that current. The motor constant (Kv, expressed in RPM per volt) gives you a reasonable idea of how fast you will need to turn it to get any given voltage.

AS
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