Topic

Jetboil Zip Hacks

  • This topic is empty.
Viewing 11 posts - 1 through 11 (of 11 total)
Curt Peterson BPL Member
PostedJan 18, 2012 at 10:31 am

So I picked up a Jetboil Zip the other day. I've avoided the integrated setups since they showed up because the weights just didn't make sense. With the recent versions, they're much more interesting. Will and Janet's incredible series put me over the top and I decided to give it a try. While I can still get a couple ounces lighter with my Gnat and Ti pot, at some point simplicity and compactness become worth a little weight.

Played around with it a bit and I'm sold enough to give it a shot. It is more efficient for sure. Most of my test runs get about a pint per 4-5 grams of fuel. My Gnat (and Snow Peak Giga) use about 7-8 in ideal conditions.

A few things weren't working for me, however. 1) I didn't like the knob flame control. It's hard to adjust with big fingers, almost impossible with gloves. I like the wire adjustment on the Sol series, but at literally DOUBLE the price, not worth it. 2) The neoprene cozy reeks. Like toxic nauseating reeks. I washed it. Put it through the dishwasher. Still reeks. Worst of all, everything it touches reeks. I was glad to see Will and Janet's note that it didn't significantly improve efficiency. Gone. 3) Not a fan of the lid. Very plasticky – I'd never drink my coffee out of it because of the smell and feel. It could be lighter, too.

So, with those shortcomings, I decided to tinker a bit. First up was the lid. The Snowpeak 700 and GSI Minimalist lids fit perfectly. They're heavier than the stock, however, so they're out. On a whim, I stuck a Ziploc lid on top. The groove lines up perfectly with the lip. Weighs a fraction of the original, too. It doesn't lock on, but I actually found the stock one too tight and it required too much force to pry off to check on the boil. Solution found.

Next up was the knob. My plan was to drill a couple tiny holes in it and add a wire knob. As I was looking at my Gnat's wire knob to see the correct diameter, it struck me that the burner shafts were very close in size. A couple twists later I had my Gnat valve on the Jeboil burner. The threads match, but a word of warning – they are not as deep, so don't tighten the burner too much or you'll strip the threads. There is a tiny gap left at the bottom. A washer could be put there to prevent overtightening, but it's not really necessary. In this setup, the plastic shroud still works. It, too, will need a washer to get snug. It's possible to leave it off entirely and save half an ounce, but the convenience of having something to grab to untwist the pot while hot is probably worth it. Fired it up and it was just as efficient as the stock setup. I'll admit I was afraid to really turn it up though. It's MUCH more powerful than the throttled stock stove.

Still playing with it, but here are the changes so far:

Stock Setup – Zip pot, cozy, lid, burner: 10.7 ounces
Stripped Setup – Zip pot, Ziploc lid, Gnat valve, no cozy: 7.9 ounces
With Shroud – 8.5 ounces

Why do it? I don't care about the cold weather speed of the Sol burners. We rarely get that cold in the Northwest and according to Will and Janet's test SPEED is impacted quite a bit, but EFFICIENCY is not. I can always spare an extra couple minutes in the woods for my water to boil. I care only about efficiency. The stripped weights of the Sol setups are 7.5 and 9.2 ounces without lids according to W & J's testing. With this setup (assuming you have a Gnat or something else that works), you get a setup just as light or even lighter for HALF THE COST. Another $75 to save a couple minutes of time in only certain conditions? Makes no sense to me.

I think the stock Zip is undoubtedly the best VALUE in the Jetboil lineup already. With these simple (and completely reversible) hacks, it's a steal.

My questions for the stove gurus out there: Any life-threatening consequences to this? I don't – and won't – cook in a closed space so I could care less about the CO issues. My main concern is that larger valve on the Gnat can crank out a lot more heat than the Jetboil stock one. Any potential issues with a blowtorch under that pot that I'm missing?

Still tinkering. Next up are the washers to get everything snug and possibly an igniter just see if it can be done.
Zip GnatZip Gnat Stripped

David Thomas BPL Member
PostedJan 18, 2012 at 10:49 am

Curt: Nice mods! Thanks for the suggestions. I haven't taken the Jetboil plunge yet (other than their larger pots for family trips) so your post is very timely for me.

If you're not concerned about CO, then are there other potential problems with cranking it to a higher heat output? You've tossed the cosy, so it eliminates that concern. Is that plastic between the burner and canister? If so, it has some temp limit, so maybe don't crank it high on a hot summer day. On a cool morning or evening, I'd worry less about it.

I really like the Ziploc lid – so very off-the-shelf! I've found they are brittle around 0F, more so at -10F. Down to freezing them seem fine. On the high end, they do okay in my dishwasher even on "sanitize" (180F). Maybe I'll sacrifice one into boiling water to confirm it can handle 212F.

Curt Peterson BPL Member
PostedJan 18, 2012 at 1:17 pm

Did the first "permanent" mod to the Zip. Very simple addition of a wire adjustment knob. Even without the 1/2 ounce savings of using the Gnat, this one is worth it just for convenience. No problem adjusting anymore – even with gloves. I shaved it down a little with a rotary tool, but it's not really necessary. Certainly there won't be an weight savings.zip bail

kevperro . BPL Member
PostedJan 19, 2012 at 4:16 pm

I have been on the fence over which one to buy. I checked all of them out in the store and I actually like the cup/cozy on the zip better even though it is heavier. I'm not super anal about an ounce unlike many. I'll carry the extra if it is sturdier or more functional.

What has concerned me more was I wanted the regulated version so that I can get the kind of efficiency from the bottom of the canister. For many of my trips one small canister is just barely enough fuel so I end up carrying either two small or one large. That is a significant amount of weight that could be left home assuming the Zip can boil as much water with a canister as the Sol.

Is that the case? How does it function when the canister is nearly empty? I'm like you… don't care if it takes a little extra time to boil but I do care how many boils I get from the small canister.

Bob Gross BPL Member
PostedJan 19, 2012 at 4:26 pm

Curt, your photo shows the new wire knob ready for operation. Does it fold away correctly?

On the Gnat, it folds upward to get out of the way the best.

–B.G.–

Curt Peterson BPL Member
PostedJan 22, 2012 at 11:33 am

@Kevin – According to Will and Janet's testing, it didn't make a huge impact at all. Can't remember the exact numbers, but it was something like 1 or 2 pints out of 45 or more per canister. For double the price, that's a pretty minimal improvement, and likely only happens with colder temp usage anyway.


@Bob
– Sorry for the slow reply. We've been without power or 'net for 4 days here in the Northwest. All came back this morning at 3 a.m., so catching up. Incidentally, I used the JetBoil a TON as we were cooking entirely on camping stoves during the outage. The bail does fold away nicely. You have to open the valve a quarter turn, but you have to do that on many stoves to fold it away. Pic attached if you want to see it. It stows in the JetBoil pot with a canister still quite nicely. It might not if you take the stand, regular pot adapter and everything that came with it, but I don't and it works just fine for me.
JetBoil Stowed

Hikin’ Jim BPL Member
PostedJan 30, 2012 at 8:30 pm

So, with those shortcomings, I decided to tinker a bit. First up was the lid. The Snowpeak 700 and GSI Minimalist lids fit perfectly. They’re heavier than the stock, however, so they’re out. On a whim, I stuck a Ziploc lid on top. The groove lines up perfectly with the lip. Weighs a fraction of the original, too. It doesn’t lock on, but I actually found the stock one too tight and it required too much force to pry off to check on the boil. Solution found.

Hey, Curt,

Nice hacks, bro. Especially the lid. Now that is one sweet hack. lol. And very nearly in my price range.

I don’t see any red flags here. If you’re using the Gnat’s valve (I think that’s what you’re doing), then yeah, don’t over tighten and maybe don’t turn it up to 100% open. Even if you did open up the valve fully, as long as there’s water in the pot, the pot itself should be OK. Some of the surrounding stuff that is plastic could be affected, but keep an eye on things and I think you’d be fine.

The two really serious things to be on the look out for would be a) any indication of gas leaking around the valve and b) excessive canister warming.

HJ
Adventures In Stoving

Jim W. BPL Member
PostedFeb 1, 2012 at 3:08 pm

Jetboil Zip vs. Sol efficiency is going to be about the same. I have a PCS and now a Sol.

The unregulated models- PCS, Flash, and Zip will heat slower in colder weather because they are flowing less gas. The insulated cozy and lid will prevent high amounts of heat loss as the water is more slowly heating.

PostedFeb 11, 2012 at 2:15 pm

It doesn't look like it in the picture but you know they make a titanium pot for this right? It is expensive however. I replaced my pot from the original PCS system from years ago with the titanium one and saved a bit of weight. Unfortunately I don't use the jetboil anymore so that darned expensive titanium pot is worthless to me now.

PostedNov 3, 2013 at 8:05 pm

With the higher output burner, you could have a risk of overheating the heat exchanger fins and melting them.

To add to the hacks, I just made a lid out of aluminum flashing for a Flash that I bought new for $45 but have never used. I know, the Flash isn't light, but I bought it before BPL entered my life, and before the Sol existed. Anyway, the lid could be made for any version.

The lid is held on with a couple of bent tabs on the sides, and it can slide back and forth a bit while still being held on by the tabs. On this version I made a curved cutout so that the lid yields a smaller opening when slid back (if you wanted to drink from it), but covers the opening of the pot completely when slid forward a little. By pointing the residual curvature of the flashing down, the lids makes a tight enough seal on the pot when the sides are held down by the tabs. The lid stores inside the pot with the burner. I don't have a 100g canister, so I can't say if one will still fit inside the pot with the lid inside, but I think it might as the lid is so thin, except for the bent tabs.

The lid is .18oz, vs. 1.00 for the stock lid. I've read that the lids with the Sols are lighter.

Jetboil MYOG lid

Lid installed with drinking cutout active

Lid stowed inside pot with burner

Viewing 11 posts - 1 through 11 (of 11 total)
Loading...