Might do better than you think when the temp. is cold enough to freeze gonads. How's that bearing going to work in heat?

Seems I forgot to post the 'finished' picture for this project, so here it is with my homemade blades fitted.
I can report it does work, but not well. The window of operation (temperature range) is too small at the moment, and it suffers from too much heat soaking in to the top heatsink. I plan to try and perfect it in the winter when I have the stove running again.

>>12203 I haven't massacred myself lately :D

I'm also wondering how you look like.. I hope you wear..erhm..protection

>>12197 Yes, I have all those tools any many more. My name's JC and I'm a tool-a-holic :D
The tiny bearing is part of the motor. I haven't done that much metal work before, I'm mostly a wood worker, so I'm pretty happy with how it's working out.

Taking a real close look here, raises some questions with me...Do you have a shop with a band saw, drill press, bench vise, etc? I was noticing the perfect bends, rivets, and is that a tiny berring you've inserted for the propeller? How did you secure it to the fan mount? Buying something never compares with doing it yourself and the personal rewards that come with it.

I've made the bracket for the motor and mounted it. It needs a few minor adjustments but I think it'll do the job. Hopefully the adapter for the motor to fit a fan to it should arrive within a few days. Also I ordered some 7" propellers to experiment with, but I may well make my own fan blades eventually :)
>>12182 The Ecofans cost £100+ in the UK even though the parts cost less than £10 :/

Great job. I've seen something similar advertised for hundreds of dollars (includes the heat-driven fan). Great way to heat a room without buying a heater and using the space for one.

>>12159 I'll make a bracket that fits the motor between the two central fins of the heatsink and then make a simple fan to fit to it, both will also be aluminium.
Silver is the best heat conductor closely followed by copper, but they are both pretty expensive. To build this in copper would have cost at least 5 times more :/
Hopefully I'll find time tomorrow to fit the motor.

And where and how are you putting the fan on?
And what material will that be?

Doesn't silver or copper guide heat well too?
I know the first is a bit too expensive but copper should be easy to steal..eh..find ;)

>>12153 It's aluminium, specifically chosen as it's a very good heat conductor and inexpensive. The peltier module needs to ideally have a 100C difference between the top and bottom surface to generate the most electricity which is why it has a big block of aluminium on the bottom and a big heatsink on the top. The fan, once added, will help to cool the heatsink as well as gently blow warm air around the room.

nice! What material did you use?

very cool ecofan! probably could use it to dice veggies, too!!