BPL Community Profile

David Gardner (GardnerOutdoorLD) - BPL Premium Member

My Locale Northern California
About Me Long-time backpacker and ultralight fan. Day job as an attorney. Did civil and mechanical engineering before law school. Have a cottage business making super ultralight stoves, cook kits, trekking poles, polycryo tarp/tents and saws
CityPetaluma
StateCalifornia
CountryUSA
My Website URLhttp://www.GOLDGear.co

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All Forum Posts by David Gardner

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3 Million+ Possible Combinations
So I'm getting ready to move May 1, and cleaning and packing my shop. Was surprised (appalled?) to see how many variations there are for systems using one particular stove concept: Once I ...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 15, 11:15am

Re: Fins!!!
If only I could weld aluminum that thin! I have been considering the use of thermal grease for CPU cooling fins to coat the parts of the fins in contact with the can, to better conduct heat into it...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 14, 12:21pm

Inner Ring with Louvers
Delmar, Great ideas about the internal ring and the louvers. The aluminum radiator fins I was using have very tiny little louvers in them, so I made an inner ring of them which fits tight to the i...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 14, 2:17am

Re: Some Questions & Windscreen Idea
Delmar, I used both the regular and the advanced formulas to calculate efficiency (thanks Glenn for furnishing copies of both). Didn't seem to make any difference which one I used, perhaps bec...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 13, 8:55pm

Fin Design
I'd be happy to ship my various fin configurations to whomever wants to try the variations suggested.

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 13, 11:39am

Sans Fins
In between testing different fin concepts today, I was mainly working on some other ideas. This is the best combination I've been able to cobble together for the purpose of efficiency: Tight...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 12, 11:08pm

Re: Re: Re: Wrong fin design
The spacing from peak to peak of the fins as tested above was 1/2". Tried it again with 5/8" spacing, no boil after 10 minutes. I am definitely done with fins now. Moving on to other, mor...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 12, 7:10pm

Re: Wrong fin design
Tried stretching out the fins for better spacing: At least I got a boil this time. Did just one test, got 7:40 boil, 8:36 burn. E = 62.8%. Not as good as other systems I've tried, certai...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 12, 5:09pm

Re: Re: Re: Fins
Tried putting the fins between the stove and the pot. 500 g of 70* F water, 15 ml fuel, no boil: Tried putting fins down low to jet height, no boil: The fins are springy and fit tight to the ...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 12, 1:59pm

Fins
In another thread I solicited ideas for improving efficiency. Fins were one of the suggestions. I previously tried fins made from aluminum tape attached around the base of a Fosters can, but it ...

In Make Your Own Gear » The Alcohol Stove “Efficiency Percentage” Test Thread
April 11, 8:47pm

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