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MYOG Tarp and Bivy

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David Beechey BPL Member
PostedJun 16, 2009 at 5:10 am

These 2 projects are my first real MYOG besides stuff sacks !

MOMENTUM / CUBEN BIVY

I wanted an Ultralight Bivy and decided to try to make one myself (the VaprNANO was never in stock and the lead times and poor dollar pound exchange rate made a MLD Litesoul too pricey)

Bivy Plan

Fabrics from Z packs and Thruhiker
Cuben 0.6 oz/sqyd
Momentum Ripstop 0.9 oz/sqyd

I used an existing Bivy (heavy !!!) as my template. I decided to forego the bathtub walls and make a simple bivy – 2 pieces the same size and simply stitched together with a drawcord opening. The bivy is perhaps a little big but i wanted to ensure there was no risk of sleeping bag loft compresson and i’m 6’1” so it needed to be long enough to cover my head if necessary to guard against rain splatter under the tarp.

Flat Bivy

Below Bivy containing Arc Ghost bag

Bivy (inc Arc Ghost)

CUBEN TARP

I was inspired by the pictures of Steven Evans’s MLD cuben poncho set up in Tarp mode (great pics and trip reports BTW Steven).

CUBEN 0.6 oz/sqyd

It is a simple rectangle 112” (9’4”) by 49.5”(4’1.5”) with 12 guy points. The guy points are Grosgrain (0.5” and 0.75” widths). I used 1.5 oz/sqyd Cuben Fibre for the reinforcement patches (from Z packs)
1mm dyneema Guyline from Team io in the uk with mini lineloks.

Tarp Plan

Total weight 90g inc guylines.

Tarp 1

Tarp 2

Tarp 3

I’m considering adding doors to increase the weather resistance (the UK is quite wet – a rare sunny day for these pictures !). I know this will reduce the flexibility as far as pitching options however and this makes me a little reluctant…….

Thanks for all the MYOG'ers for the inspiration and advice on these forums :o)

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