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Forum: Model A (1928-31) 01-28-2021, 11:02 AM
Replies: 49
Views: 5,437
Posted By Badpuppy
Re: How difficult would it be to convert this water heater from 12V to 6V?

I stand corrected for my fuzzy thinking: V/2 ~ P/4.

In my defense, (somewhat) axle friction and wind resistance will be reduced, and the motor will spin rather faster than expected.
Forum: Model A (1928-31) 01-25-2021, 01:17 PM
Replies: 49
Views: 5,437
Posted By Badpuppy
Re: How difficult would it be to convert this water heater from 12V to 6V?

This one rated to 6V -

https://www.amazon.com/RioRandTM-Upgraded-6V-90V-Motor-Controller/dp/B00F839VNQ/ref=psdc_306530011_t3_B07T35JDTR

The fans in post #9 have plastic housings, which are...
Forum: Model A (1928-31) 01-25-2021, 10:29 AM
Replies: 49
Views: 5,437
Posted By Badpuppy
Re: How difficult would it be to convert this water heater from 12V to 6V?

Power is proportional to the square of current. Fans will run about 1/2 speed.



5V fans can be had, just be sure they're physically the same size. The heavy dimmer switch will keep the speed...
Forum: Model A (1928-31) 01-24-2021, 12:00 PM
Replies: 49
Views: 5,437
Posted By Badpuppy
Re: How difficult would it be to convert this water heater from 12V to 6V?

The LED dimmer switch probably won't handle the fan current. Easiest to run it on 6V with a simple toggle switch. The second item you referenced includes a higher powered dimmer, which you...
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