Ocelot Windscreens: A Family of Solutions
The Ocelot Windscreen was designed for people who use mugs along with canister topped stoves. These are great, lightweight cooking options as the stoves are compact and can weight less than an ounce. As marvelous as these devices are, the one area that they lack in is wind protection. All stoves (alcohol, Esbit, isobutane or white gas) all need some sort of protection from the wind. Without a windscreen, fuel efficiency can drop like a rock as well as significantly increase the time to heat up water. There have been a few attempts to solve this problem including the Optimus Crux Clip on windscreen and the Giga Peak windscreen plate. To date, there hasn’t been a completely satisfying solution. A few people have tried surrounding the cooking system (canister & stove) with a partial windscreen with occasional disastrous results.
Enter the Ocelot Windscreen! Ocelot consist of a full circle, yet partial windscreen. Ocelot is design to protect the burner head from the wind while allowing ample space to keep the isobutane canister cool as provide an ample supply of fresh air to your stove. The Ocelot Windscreen is actually a whole family of solutions and consist of a Stainless-Steel windscreen along with a stove specific burner plate that matches your stove to our windscreen. We will be expanding our product line as the product matures. Similar to our other cooking gear, the Ocelot Windscreen has been designed to nest inside your mug: like the Snow Peak trek 700. Of course, smaller mugs can be used however; the specific burner plate may not nest inside your mug.
The Ocelot Windscreen was not designed to boil water as fast as possible. If that is your objective, go buy a JettBoil. The goal of the Ocelot System is to preserve fuel efficieny in windy environmets. We aim to be able to boil 2 cups of water using 5-7 grams of fuel and it usually takes about 6 minutes to reach a boil. If you need to boil something fast (like melting snow), just remove the windscreen.
Ocelot: Stove Compatability
MSR PocketRocket (Original), PocketRocket 2 & PocketRocket Deluxe
Soto Amicus, Soto WindMaster (3 Flex & 4 Flex)
Fire Maple 300T (Hornet or Wasp)
Specific Design Features
- The Cooking System nest inside your mug for ultimate protection
- Light weight system: approximately 28 grams / 1 oz
- The windscreen is 4.7″ in diameter and we recommend at least a 1/4″ clearance (4.2″ diameter). As a reference, the Snow Peak Trek 700 is 3.8 and the TOAKS 750 ml mug is 4.0 ” in diameter.
- Pre-curved windscreen for easy assembly
- Pre-Alignments pins to help stabilize the windscreen during assembly
- Windscreen material: 304 Full Hard Stainless Steel
- Cooking System dimensions: Height model dependent (1.5″-1.9″) Diameter 4.7” [windscreen: Model Dependent: – 0.003”; Burner Plate – 0.012″ to 0.0155”]
- Weight: 28 grams
A note about the Ocelot Windscreen. This system was specifically design for canister top stove users who are concerned about fuel efficiency. We recommend that you use your canister top stoves at a low burn rate as that is the proven method of extracting as much fuel efficiency as possible. You should be able to boil 2 cups of water using 6-8 grams of fuel: that means that you should be able to achieve about 16 2-cup boils per 4 oz canister.
Ocelot Performance in the Wind
Here are wind tunnel test results from the PocketRcket Deluxe. The test was run at ambient as weill as with and without the Ocelot windscreen. In all test, 2 cups of 70 F water was used and heated until boiling (210 F at our elevation). At 3.5 mph wind, the Ocleot Windscreen saved 5 grams of fuel per boil. In all cases, the stoves were turned to 1/3 power, increasing the power, lowers the fuel efficiency.
Here are wind tunnel test results from the BRS 3000t. The test was run at ambient as weill as with and without the Ocelot windscreen. In all test, 2 cups of 70 F water was used and heated until boiling (210 F at our elevation). When testing the BRS 3000t, we were unable to obtain a boil an had to reduce the speed to 2.1 mph. In all cases, the stoves were turned to 1/3 power, increasing the power, lowers the fuel efficiency.
A partial list of compatible mugs
(4.2 inches in diameter and smaller)
Snow Peak Trek 700
|Snow Peak Minimalist Soloist Ti||Imusa 10 cm Mug|
|Snow Peak Trek 600||Snow Peak Minimalist Soloist AL||REI Ti Ware Cup and Pot Set|
|Evernew Small Pasta pot 700 ml (ECA521)||Snow Peak Mini Soloist Ti||Vargo Ti Lite 750|
|Evernew Ultralight Ti 500 Mug (ECA266)||Snow Peak Hybrid Summit||Stoic Ti Kettle 700 ml|
|Evernew UL Deep (ECA264)||Klean Kanteen 40oz, wide||TOAKS Titanium 750ml Pot|
|Evernew Non-Stick Deep Pot (ECA402)||TOAKS Titanium 600 ml||Alpkit – MytiMug|
|Evernew Ultralight Deep Pot (ECA265)||Stanley Camp and Cook Set|
|Evernew UL Non Stick Deep (ECA401)||TOAKS, Titanium 650 ml Mug|
|Backcountry.com 700ml mug|
The Ocelot DIY HX (heat exchanger) Kit
The Ocelot DIY HX (heat exchanger) Kit is a specific kit designed to work with small volume heat exchanger pots. The reason to take on such a project is to create a light and wind tolerant cooking system. Compared to commercially available systems, the Ocelot DIY Kit is more fuel efficient, lighter and significantly less expensive.
The Ocelot DIY kit provides instructions on how to create your own heat exchanger cooking system. All items are available commercially except the custom burn plate that allows you to couple the stove to the mug. Here is a list of components that you will need to purchase:
- HX Mug (~$24) – we recommend the Sterno Inferno, this project only utilized the mug and possibly the lid. Other HX mug will also fit including some JetBoil products (the burner plate is 3.5” in diameter).
- Fire Maple 300t (~$28) or equivalent (there are quite a few clones out there)
- Optional (~48) – Imusa 4 cm replacement lid to further reduce your pack weight
- Custom Burner Plate ($ to $$)
- We have provided instructions on how you can build your own burner plate
- We also offer a DIY version of the plate; final forming and finishing is to be completed by the customer.
The HX Burner Plate
Simply put, the burner plate replaces the foldable support arms on the Fire Maple 300t (or similar clones). Unthread teh stove body, replace the folding arms withteh the Burner Plate, Put all of the nuts back onto the stove and tighten. The new stove assembly will fit inside the Inferno mug.
DIY Burner Plate Pattern
We have found 4″ diameter aluminum plates on eBay for around $2
Pop rivets or studs are placed through the 0.13″ diameter holes in order to locate and center the mug
To complete the assembly, the Fire Maple 300t is taken apart and the stem of the stove is inserted through the center hole of teh burner plate. The nut is installed and tightened to lock the burner plate in place. The stem of the stove is then attached to teh stove body.
(Only valid for shipments within the United States for now)