diff options
Diffstat (limited to 'outdoorsing')
| -rw-r--r-- | outdoorsing/SCUBA.page | 89 | ||||
| -rw-r--r-- | outdoorsing/bikes.txt | 54 | ||||
| -rw-r--r-- | outdoorsing/long_routes.txt | 36 | ||||
| -rw-r--r-- | outdoorsing/touring_bike.txt | 15 |
4 files changed, 194 insertions, 0 deletions
diff --git a/outdoorsing/SCUBA.page b/outdoorsing/SCUBA.page new file mode 100644 index 0000000..6e15c52 --- /dev/null +++ b/outdoorsing/SCUBA.page @@ -0,0 +1,89 @@ +--- +format: rst +categories: +toc: no +... + +============ +SCUBA Diving +============ +--------------------------------------------- +Self Contained Underwater Breathing Apparatus +--------------------------------------------- + +SCUBA stands for "Self-Contained Underwater Breathing Apparatus". +One of the primary organization regulating recreational SCUBA diving is +PADI (the Professional Association of Diving Instructors). + +Equipment +--------- + +:BCD: The buoyancy control device is basically an inflatable live vest + that you can inflate using the regulator (or by mouth) to control + your buoyancy. Your buoyancy changes as you use up air (tank gets + lighter for same volume displaced), inhale/exhale, swim in water + of different temperature or salinity, or change depth: increased + pressure compresses any flexible air pockets, including the BCD + itself, neoprene foam, or a dry-suit. + Most BCDs have their own pressure hoses coming from the first stage + regulator that supply air. + Sometimes there is only one vent valve, which has to be at the + highest orientation or air will not vent out of the bladders. +:Tank: Most tanks are made of steel or aluminum and can store compressed + air of up to 3000psi. They are stored at pressure to prevent moisture + from leaking in. There is a valve built into the tank itself that + usually gets taken apart and repaired every two years. Tanks + can last for decades even with heavy use; they are pressure tested + for fatigue and leaks. +:Regulator: The first-stage regulator is connected to the tank and steps + the pressure down to about 250psi above the surrounding/ambient + pressure. Hoses carry air at this mid-level pressure to the second + stage regulator/mouthpiece, which steps the pressure down to + about what is in your lungs. Depending on the regulator they can + be stiff (you have to suck a bit to get air, but then it rushes + in with force) or very natural feeling (air comes very smoothly + on inhalation and doesn't press into your lungs). +:Alternate: These days almost everybody carries a second regulator mouthpiece + for emergencies. These are always on and ready to breath from, + but usually stiffer so they don't free-flow as often. +:Dive Computer: + A dive computer monitors time and depth to give you an accurate picture + of how much excess nitrogen is in a diver's bloodstream. By + continuously integrating they usually "give more time at depth" than + hand calculations using tables (which err towards safety). +:Dry Suit: A dry suit is a sealed and air tight, keeping the diver's skin dry. + Extra insulation is needed to give warmth underneath. Some dry + suits are made of compressed neoprene. + A dry suit has to be constantly adjusted with tank air just like + the BCD to maintain inflation and buoyancy. +:Wet Suit: Wet suits work on the principle of holding water against the skin: + a diver's body warms this water and stays cozy as long as water + flow is restricted enough. Even little bit too much flow through + wrist or ankle openings can be very cold. + + +Depths +------ +A PADI Open Water Diving course gives a recommended limit of 20m/60ft. +A "deep dive adventure course" gives a recommended limit of 30m/100ft, +and additional experience gives a limit of 40m/130ft. + +With careful decompression stops and enriched compressed air (higher oxygen +content) it's possible to reach depths of hundreds of meters. Sometimes +commercial divers will dive for many hours using surface supplied air, +then live at the surface in a compression chamber overnight between dives +to stay at the same pressure [*]_. + +History +------- +I'm pretty sure `Jacques Cousteau`_ invented the aqualung, which is the basis +for modern diving, but I'll have to check. + +.. _Jacques Cousteau: /k/jacquescousteau/ + +Flying +------ +After a regular no-decompression dive, wait at least 12 +hours before flying (or going to high altitude, eg over 300m). + +.. [*] Need a citation, heard this word of mouth diff --git a/outdoorsing/bikes.txt b/outdoorsing/bikes.txt new file mode 100644 index 0000000..920fd9f --- /dev/null +++ b/outdoorsing/bikes.txt @@ -0,0 +1,54 @@ + +bridgestone: +- seat security bolts (?) + +centurion: +- serial number + photo! +- set of lights +- fenders ); +- new brakes (?) + => old chunky style +- seat security bolts (?) +- gatorskins? + +current gearing: +- 50T / 110mm front ring +- fixed: "1/8"-18T" +- freewheel: "1/2 by 1/8" "main drive" "A5" => 16T? +- 165mm cranks "bulletproof" +- good pedals/straps (done) + +mission bikes was: +- https://www.missionbicycle.com/bike-builder/16982 +- 62cm (should have gone with 59cm though) + Size: + 59cm + 62cm + S/T C-C + 55.5cm + 58.5cm + T/T Length + 56.5cm + 58.5cm + H/T Angle + 74.0deg + 74.5deg + S/T Angle + 73.5deg + 73.4deg + H/T Length + 15.6cm + 18.3cm + Wheel Base + 97.5cm + 99cm + B/B Drop + 5.5cm + 5.5cm + C/S Length + 39.3cm + 39.3cm + Stand Over + 33in + 34in + diff --git a/outdoorsing/long_routes.txt b/outdoorsing/long_routes.txt new file mode 100644 index 0000000..e5aa3eb --- /dev/null +++ b/outdoorsing/long_routes.txt @@ -0,0 +1,36 @@ + +Multi-day through multi-week, mostly road and gravel bike routes! + +Northern Summer +---------------- + +Washington, USA: North Cascades and Yakama loop + +Loads of routes in the USA; see [Adventure Cycling Association][aca]. Notably: + +- "Sierra Cascades": parallel to the pacific crest trail, on bike +- Pacific Coast itself +- Route 66 (at least the western subset); Santa Monica +- Western Express: SF to Pueblo, Colorado; ~1600 miles, a month or so. +- Southern Tier: San Diego throuhg El Paso; route continues cross-country +- Great Parks North: Montana inot Canada (Banff, Jasper) +- Utah Cliffs: short (300 mile) loop aroun dZion. + +[aca]: https://www.adventurecycling.org/routes-and-maps/adventure-cycling-route-network/ + +Iran: paved roads? + +Scandanavia: routes on the "EuroVelo" network + +Northern Winter +---------------- + +Tasmania: paved roads? + +Patagonia/Chile/Argentina: Carretera Austral; ~500 miles, roughly 10 days; or +770 miles in full; gravel road. Very popular with cyclists. + +- https://medium.com/get-there/carretera-austral-cycling-guide-covering-650-km-of-deserted-road-in-two-to-three-weeks-69953e85faf9 +- http://www.thebikeramble.com/2017/01/carretera-austral/ + + diff --git a/outdoorsing/touring_bike.txt b/outdoorsing/touring_bike.txt new file mode 100644 index 0000000..c79c7ff --- /dev/null +++ b/outdoorsing/touring_bike.txt @@ -0,0 +1,15 @@ + +Surly LHT, probably 58cm, either 26" or 700c, non-disk prefered + => $1275 new, $14500 disks + => 26" larger off-road tires + => 700c probably rides more fun? + => compatability with friends probably more important than stores? + +Salsa Vaya + => lighter/faster? 700c but more tire clearance + => $1400 + +Trek 520 + => 700c x 45 (same as LHT) + => haven't looked + |