Topic

MYOG Caldera type cone


Forum Posting

A Membership is required to post in the forums. Login or become a member to post in the member forums!

Home Forums Gear Forums Make Your Own Gear MYOG Caldera type cone

  • This topic is empty.
Viewing 8 posts - 1 through 8 (of 8 total)
  • Author
    Posts
  • #1253680
    Joseph Morrison
    Spectator

    @sjdm4211

    Locale: Smokies

    I spent my New Years Eve with my fiancee making a caldera cone. Party on!

    conecone, pop can stove and Snow Peak 700 kettle

    I got instructions from this youtube video: http://www.youtube.com/watch?v=VerP7-aiEBw.

    It was quite easy but I didn't follow every step. I made a few modifications. For one thing I made the intake holes at the bottom much larger than the ones at top. I figured more intake and less exhaust would mean hotter. I could always drill more holes at the top if this isn't true. Any thoughts?

    Joseph

    #1558497
    Joseph Morrison
    Spectator

    @sjdm4211

    Locale: Smokies

    BTW I will take it outside tomorrow morning and take the temperature and see what kind of boil times I can get compared to a regular wind screen. I also need to weight it. I need to buy a scale. :(

    Joseph

    #1558556
    Joseph Morrison
    Spectator

    @sjdm4211

    Locale: Smokies

    At 35 degrees and 17 mph wind I was able to boil 2 cups of cold water(no idea of temp.) in 5 minutes 31 seconds using 3/4 oz. of denatured alcohol.

    Under the same conditions an Esbit tab boiled the 2 cups of water in 5 minutes 49 seconds.

    I am thinking the Esbit tablet might be the way to go. I will have to try them out on my next overnight.

    I will also build another caldera cone for my AGG 3 cup pot. I think that would get a faster boil time.

    Joseph

    #1558654
    Don Meredith
    Spectator

    @donmeredith

    Locale: SouthEast

    Interesting project. How are you connecting the cone at the seam?

    I recently purchased one of the UL cones that fits inside my SnowPeak 700 and really like it. I found the geometry interesting so I put together a spreadsheet to calculate the variables for different sized cones. I may consider playing with variants for fun but I don't really see any significant opportunities to improve over the Caldera design.

    Nice project!

    #1558665
    EndoftheTrail
    BPL Member

    @ben2world-2

    Never mind the caldera… I'm IMPRESSED that your fiancee actually spent New Year's Eve with you on a MYOG project! You are one lucky dog! Happy New Year to you both! :)

    #1558666
    Joseph Morrison
    Spectator

    @sjdm4211

    Locale: Smokies

    Don,

    Here is a link to the insturctional video I used. http://www.youtube.com/watch?v=VerP7-aiEBw

    In the video it explains how to connect the cone at the seam and also how to select different slopes of the caldera cone. I chose more slope because I only had a foot and a half long piece of flashing. Where as the cone in the video was made from a two foot piece of flashing.

    I have seen the UL cones but I didn't know they would fit inside the pot. That would definitely be a plus as I don't know where I will put my cone in my pack. BTW do you think the UL Cone would be more fuel efficient than a standard tight fitting windscreen?

    Joseph

    #1558668
    Joseph Morrison
    Spectator

    @sjdm4211

    Locale: Smokies

    Yes, I feel lucky. Thanks Ben and happy new year.

    Joseph

    #1558773
    Don Meredith
    Spectator

    @donmeredith

    Locale: SouthEast

    Joseph, its hard to say if its more efficient than a normal wind screen or not. My intuition says yes but I don't have data to back it up. The way I see it the advantages are:

    Packs in the pot
    Serves as pot support and wind screen
    Very efficient (although less than a full caldera)
    Very stable setup – unlike most other alky setups I've used

    The price is very reasonable at $25 for the cone and the stove. After taking a few trips with mine I may upgrade to the ti version to add a little durability and allow the option to burn wood if necessary.

    DM

Viewing 8 posts - 1 through 8 (of 8 total)
  • You must be logged in to reply to this topic.
Forum Posting

A Membership is required to post in the forums. Login or become a member to post in the member forums!

Get the Newsletter

Get our free Handbook and Receive our weekly newsletter to see what's new at Backpacking Light!

Gear Research & Discovery Tools


Loading...