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Old 09-13-2020, 03:17 PM   #71 (permalink)
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That worked great.
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Old 09-14-2020, 04:29 AM   #72 (permalink)
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Jerry, thank you. I darkened the other fans. I decided on track power and am now putting finishing touches on the circuit the drives the supply fan. LiG
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Unread Yesterday, 09:38 AM   #73 (permalink)
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Installed an adjustable voltage limiter, access to adjustment is through the heat generater exhaust. Assembled a simple circuit so the drive fan gets 4.5V and the fans spin, the drive motors are still idle till the track voltage reaches almost 6. No matter the train speed the fan speed is constant. LiG

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Unread Yesterday, 12:25 PM   #74 (permalink)
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That is neat, I use these from gfhappyboy on Ebay too control 5 volt smoke units and throw in a 100 ohm resistor for head lights and flickering fire box and they work great. I particularly like the way you slowed down the fans by just painting ever other fan blade, good looking engine

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Last edited by choochoowilly; Yesterday at 12:43 PM.
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Unread Today, 04:35 AM   #75 (permalink)
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Bil, thank you. I do get a good idea once in a while. I thought of cutting the blades off, but those little fans are centered on a pin point and even the slightest imballance would throw them off and wouldn't spin. LiG
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