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John Chan (ouroboros) - BPL Guest

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All Forum Posts by John Chan

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Forum » Thread

methanol to formaldehyde.
VH, I think formaldehyde can be easily formed by burning methanol "rich". I detect it in the priming cup of my open jet stove as well and essentially, the fuel in the priming cup is burning ric...

In Philosophy & Technique » Cooking technique question...
November 30, 5:24pm

Pulk... no guides
Nope, didn't follow any online guides. Just winged it. The most important component in my experience is the rods. They must be absolutely stiff (metal). I tried PVC tubing first and it either f...

In Winter Hiking » Pulk or not to Pulk....
November 29, 12:44pm

Re: Re: Amine outgassing.
Well, if it occurs in solution then the ammonia is probably in the form of an ammonium salt (NOT ammonium nitrate... BANG!) so perhaps as the hexamine precipitates out of the reaction mixture the s...

In Philosophy & Technique » Cooking technique question...
November 29, 11:50am

Re: Re: pulk
Never weighed it as weight really isn't a consideration with a pulk. Your load will eclipse any potential ounce savings you could hope to achieve using UL materials... but my guess is 4 lbs for th...

In Winter Hiking » Pulk or not to Pulk....
November 29, 11:40am

I would use a pulk on consolidated snow and non-technical terrain. Deep powder snow would probably present a challenge as the pulk sometimes has a tendency to nosedive in such conditions. Of co...

In Winter Hiking » Pulk or not to Pulk....
November 29, 10:13am

Amine outgassing.
VH, I remember once in 3rd year synthetic organic chemistry a lab where we purified some large amines by rotovap using di-ethyl ether as the solvent. Presumably any gaseous by-products of synth...

In Philosophy & Technique » Cooking technique question...
November 29, 7:59am

Re: Re: Re: Esbit cooking
VH With respect to your statement that "formaldehyde is an alcohol, a little bit more complicated than methanol or ethanol" I respectfully disagree. Formaldehyde is an oxidation state of meth...

In Philosophy & Technique » Cooking technique question...
November 29, 6:57am

Esbit smell. Trimethylamine?
I've read sporatic remarks on the smell of unburnt esbit... that it has a "fishy" smell. Is this from trimethylamine coming from the fuel? Also, does anyone venture a guess at how much ammonia is...

In Philosophy & Technique » Cooking technique question...
November 28, 7:28am

Montbell UL thermawrap
I like my Montbell UL thermawrap vest. Its 5 oz in M and good for core insulation if you're on the move. For stationary applications I wouldn't use a vest... I'd be looking for a down sweater.

In GEAR » Vest?
November 28, 7:24am

Esbit dissertation
I found this link off of Sgt. Rock's site. Seems like a thorough dissertation on the pros & cons of Esbit (hexamine)....

In GEAR » esbit vs. alcohol?
November 26, 1:05pm

All Reader Reviews by John Chan

Showing 1 - 10 of 15 | Page: 1 2



Integral Designs Siltarp 2
This is now my preferred mode of tarping. After experimenting with cat-cut tarps, hammocks, tee-pee tarps, I have concluded that the most versatile configuration is the standard flat 8 x 10 silnylon ...

In Shelters - Tarps & Floorless
August 12, 9:41pm

Montbell Breeze Dry-Tec UL overbag (M)
I have used this bivy for 1 full season now. Compared to the BMW Vapor bivy this overbag has several plusses and minuses. The advantages 1. No stakeout points. This may seem counterintuitive, ...

In Shelters - Bivy Sacks
August 12, 9:33pm

MiniBullDesigns Trek 3
The MBD Trek 3 is the fully pressurized version of their original side-burner. There is no priming cup. You must add the denatured alcohol via small hole on top of the stove after unscrewing a wing-...

In Stoves - Alcohol
August 09, 7:11am

Vargo 1.3 L Titanium Pot
Very well made item. On the bottom of the pot it says "made in Japan" which from the dimensions, suggests that its an Evernew pot without the pot handles. I'm not sure how long the non-stick surface...

In Cookware - Titanium
August 09, 6:59am

Mountain Laurel Designs Prophet 25/30
Recieved my MLD Prophet 30 the other day. Its a pretty simple design but will probably do what I envisioned it to: carry a UL 3-day summer kit. I had Ron make some small modifications to my pack lik...

In Backpacks - Frameless
May 09, 9:17am

Nunatak Skaha Plus
Recently took delivery on my much anticipated Skaha Plus down sweater. Two long, anxious months from concept to delivery but boy, was it worth it. I had Tom build a sweater in Quantum shell/ 0.8...

In Clothing - Insulating - Synthetic (Polarguard, Primaloft, etc.)
December 24, 7:53pm

Golite Hex 3
I recently applied UL philosophies to group camping so I replaced my MH Trango 2 tent with a Golite Hex 3. This week, I took the Hex 3 on a planned circumnavigation of the 100 km LaCloche Silhouette ...

In Shelters - Tarps & Floorless
November 26, 5:09pm

Princeton Tech Aurora
Probably the best overall LED headtorch on the market. Ample light, ample light settings, great battery longevity.

In Lights - Flashlights & Headlamps
November 08, 1:13pm

MSR Titan Kettle
Great primary pot for 1 or 2 if you are going to boil water and add. I have even used it for cooking rice (you'll need a pot cozy). I gave it a 4 because of the flimsy handles but I guess for UL coo...

In Cookware - Titanium
November 08, 1:11pm

Montane Featherlite
I've been using the Montane Featherlite Smock as a replacement for a bulky hardshell and its worked great so far. The Pertex fabric with DWR really does well in light precipitation and even in the oc...

In Clothing - Wind & Soft Shell
November 08, 10:34am