Last April, a company called Dreamstar Lines announced plans for an overnight service between Los Angeles and San Francisco, in effect, restoring Southern Pacific's Lark service, the overnight equivalent of the more famous Coast Daylight, which ceased service in 1968.What we know:>the train would run between Los Angeles Union Station and San Francisco's 4th & King Street Caltrain station>rolling stock will consist of streamliner cars built in the 1940s and 1950s>actual train consist would be a locomotive, 5-6 sleeper cars, and a lounge car serving drinks and "tavern food" (idk what that would entail)>the train would run on a ten-and-a-half hour schedule, departing around 10pm and arrive at its final destination at 8:30am>Tickets will be in the $300-$1000 (the minimum is slightly higher than the current price for a private room on Los Angeles-Oakland on Amtrak's Coast Starlight at $284)>there will be no coach service, sleeper class only>the company hopes to begin operations by Summer, 2024>the project is far enough along that negotiations with Metrolink and Union Pacific for right of way have already startedThe most detailed sources I could findComment too long. Click here to view the full text.
>>2000472>It's supposed to use the ex Amtrak HiLevel fleet that has been sitting in Fort Worth for god knows how many years now,Not the Coast Starlight ones that were retired just a few years ago?>some dude bought them surplus from Amtrak, retrofitted them to comply with modern standards and went "surely someone will pay to use these on their private passenger rail service in the United States!"Honestly I would. But only if they give the trains a nice paint job.We unironically need to RETVRN to tradition when it comes to paint schemes because everything since 1990 has been uninspired dogshit. It's gotten to the point where I unironically prefer Caltrain's aesthetic to Brightline.>>2000551>300-1000 sounds way expensive.Sleeper class on the Coast Starlight between Los Angeles and Oakland (comparable distance to San Francisco, which is just across the Bay Bridge) is around $383 during periods of low demand so $300 would actually be a steal.
>>2000551>A trip like this that leaves late and arrives earlyEh, I think their current proposed schedule (10PM-8:30AM) might be a bit too late. An 8 or 9PM departure would be better, would allow for dinner service and an earlier arrival (around 7AM) so people working 9-5 jobs could actually use it as an efficient means of commuting.Also make the food actually good and not the dogshit Amtrak serves, that way it encourages repeat customers.
>>2000472Honestly the HiLevels are probably in better shape than most of the Superliners simply because they haven't been worn down from an additional twenty years of overuse (most except for the Coast Starlight's Parlour Cars were retired in 2003).
>>1974491COME BACK TO ME ESPEE. I CANT LIVE WITHOUT YOU
>>2000675>Also make the food actually good and not the dogshit Amtrak serves, that way it encourages repeat customers.How bad is it?
does anyone live around here?have you ever done light bicycle touring around here, with camping gear? im not sure where to go that isnt a 1 year waitlist at a campground :(
>bay areawell there should be many /n/ anons who live there.All I can say is stuff is expensive, it's nice and cool most of the time, and watch out for asian drivers.>t. central valley guy
>>2004432I didn't live there but visited a few times, one of those times I rented a carbon Specialized Roubaix and biked around the area, not a tour though. I biked the Dunbarton bridge and that sucked. Lots of wonderful views but everything is stretched out. If it's one thing to check out, make a pilgrimage to the cyclisk, which is like the bicycle version of /k/'s murdercube.
>>2004439too hot for cyclingif you do, ensure proper airflow and cooling
>>2004432if you're open to camping a bit more on the right, del valle in livermore usually has open spots during the week day.
Why don't you own one with direct front drive?
>>2003331LoL, when I got new chains it was 33€. It was the basic Decathlon ones, I ain't spending on good chains for a beater bike.
>>2003246>I need about 40° of bendI think this is quite a big angle for a cardan joint. (As far as I remember from uni). And if you are using a single joint and not a pair of joints with correct phasing, then you will have problems with vibrations and maybe even with loosing traction if this is for driving rear wheel . If this is stationary 40° angle then you should think about bevel gears. If it is like 40° with moving +-5° or so, then bevel gear + cardan joint.An interesting idea is also (semi) spherical gears. It works like normal gears, except that angles between axis can change. I 3d printed a plastic sample a couple years ago, but I didn't have an application for it, so I didn't go any deeper in that topic. Of course this is entirely custom job, but even metal 3d printing is getting cheaper, depending on your budget, untested design, etc.... something to think about.https://www.youtube.com/watch?v=5FdoDWnb2DMhttps://www.youtube.com/watch?v=XHdQHqEcoDs
>>2004546> I think this is quite a big angle for a cardan joint. (As far as I remember from uni). And if you are using a single joint and not a pair of joints with correct phasing, then you will have problems with vibrations and maybe even with loosing traction if this is for driving rear wheel .As far as my research goes I've read that cardans are good for up to 45°. It's not coincidence that I've chosen 40°. My idea was that the suspension is a bit lifted so the wishbones sit at 15° from the horizontal plane, I also accounted for up to 25° of maximum leaning angle, therefore, adding up those numbers I'd need 40°. I wanted it lifted like that so it's more visible to cars over the hood. But I guess sacrifices can be made and the wishbone horizontal angles can be reduced as well as the leaning angle by quite a bit.>An interesting idea is also (semi) spherical gears. It works like normal gears, except that angles between axis can change. I 3d printed a plastic sample a couple years ago, but I didn't have an application for it, so I didn't go any deeper in that topic.>Of course this is entirely custom job, but even metal 3d printing is getting cheaper, depending on your budget, untested design, etc.... something to think about.I don't know what to feel about spherical gears, they are not used much, there must be a reason. Also to keep the teeth touching the mechanism must be relatively heavy.I do want to use 3d printing for this project, but not in the way you suggested, but to make composites: https://youtu.be/nhqAhYOdGNcAlso the other day after an hour of YouTube research I figured out how to make a simple lockable differential that also should be not much heavier than an open one. The locking mechanism can also be used to lock up a freewheel and engage/disengage a motor, so I'm quite happy with that.
>>2006151 cont.That said, I check this thread almost daily, but I only respond when I see the thread close to page 10 and reply then to keep it alive. Maybe one of these days I'll be assed to make a 3d drawing of the whole transmission.
>>1990227>>normies can ride it>I'll passNormies can breathe air; will you pass on that too?
I need to buy a nipple ring for my bicycle. Is there a standard size or are they all different like hangers?
>>1997166>Is there a standard sizeThe standard size is 14 and sometimes 15 but they all cover all the usual sizes.
>>1997211?
>>1997211no
>>1997761
>>1997166If they're hard to turn at all (most wheels), make sure you put a drop of oil on each spoke. singer oil (sewing machine) is appropriate and comes with a nice little nozzle. Also if they're bladed spokes make sure you hold the spokes while you turn the nipple.
What goes on here
The more important question is what goes on here? What are they keeping behind the bars? Or what are they releasing from there?
>>2006141>https://en.wikipedia.org/wiki/Maneuvering_thruster
>>2006141that's the propeller brig
>>2006141Those are the cells where they keep otters accused of sex crimes.
>>2006169Seems like a cover up desu.
Space transportation general. Since spaceflight is increasing exponentially, since we are up to at least a launch per week and since we are days away from an industry revolutionizing fully reusablesuper heavy lift launch vehicle.Upcoming launches:>https://www.spacelaunchschedule.com/2024-launch-schedule/SpaceX livestreams on Twitter/X:>https://x.com/SpaceXUpcoming NASA operations:>https://www.nasa.gov/launchschedule/SpaceX Mars goalComment too long. Click here to view the full text.
>>2006017Well their part is incredibly insignificant desu
>>2006045>>2006017Also I am pretty sure Russia's only option to stay in space is to keep their part in orbit.
>>2006048One of the main problems with the ISS is the cracks that are slowly expanding in one of the old soviet modules. I'm not sure how long a russian only ISS could last.
>>2006045teehee cute little canadarm :3
China sets new static fire altitude record. Booster with no second stage attached.https://www.youtube.com/watch?v=_WhVbcIV1k0
Are oceanliners the future of green transportation?
>>2004609Will the hydrogen engines be closer to diesels or gas turbines?
>>2004609Why don't you light some Windex on fire and report back about how green the emissions are.
>>2004565pic is literally the last ocean liner ever
Yeah I loved being locked up with plebs
>>2004565>the future of green transportation?They could be.
Musk explains why Steel is the best material to work with for any engineering project, where strength, lightness, durability, reliability and reusability is required.Carbon fibre was discarded early on, aluminium too.In Musk's own words >'We went from 120 ply to a single ply, $130 a kg to $4 a kg and had a vehicle that had the same strength, was lighter, can be reused and has practically zero chance of catastrophic failure'https://x.com/elonmusk/status/1798937746624631249The titan sub disaster forced Space X too look again at Carbon fibre, and they soon discovered that the risks far outweigh any benefits, and many of the claimed benefits turned out to be simply untrue. Steel beat Carbon Fibre hands down on every metric they looked at. >''Carbon Fibre is great for single use applications, but even then it comes with massive fundamental risks, any tiny flaw in the weave, an air bubble for example, can cascade into catastrophic failure, at the end of the day it's just very expensive reinforced plastic.''
>>2004246Okay, but why do the people he hired not want to use carbon fibre?
>>2004849>t. EFF fanboy
>Decarbonized natural gas>through pyrolysisThat may not be the most retarded commercialization of greenwashing I've ever seen, but it's certainly on the short list. I get that they're separating out elemental carbon, and that comes off as a solid, but I promise it's less energy efficient than just burning the methane. If anyone gives a shit, here's the breakdown on why.Start with the energy sink a perfectly clean pyrolysis will give us (I assure you, they're not reaching 100% effeciency)>Breaking C-H bonds (times 4 per molecule)414kJ/mol each, so it takes a total of 1656kJ per mole of natty gas consumed>Forming H2 (twice per pyrolyzed molecule)436kJ/mol each, so it adds back a total of 872kJ per mole of natty gas consumed>Net energy sink for pyrolysis784kJ per mole of natty gas pyrolyzed.Now let's calculate energy delivered per mole of natty gas>Breaking H-H bonds (twice per pyrolyzed natty gas molecule)872kJ per mole, from earlierComment too long. Click here to view the full text.
>>2006134Any "decarbonizing" of anything is a greenwashing scam, and it's exposed by simply asking where the carbon goes. You need a space at a minimum the volume of the well you're draining just to store it, because hydrocarbons are actually pretty efficient at storing carbon. This would involve expense at least equivalent (but really significantly more costly) to just extracting and processing hydrocarbons to begin with.Nuclear waste is famously dense for the energy it provides, and although it's a solved problem it's still an expensive problem. Carbon waste is about the least dense waste imaginable. It's hard to imagine a more diffuse waste product than carbon.
>>2002496Ferrari F40 was carbon
When you see itPrevious: >>1781074
Post runways
Groundhog day '24
AER
>>2002968have you been there? my brother was in the peace corps in lesotho many years ago so i've actually spent a fair bit of time there.
Logan International Airport, East Boston, Massachusetts.
>>2002950this is where I tie down
Disasters never have one root cause and neither did the destruction of cycling. But I know some important milestones in the decline and fall:1. COVID 19. Enough said.2. Full suspension mountain bikes. Enough said.3. Reddit. Enough said.4. Twitter. Enough said.5. British "people". Enough said.6. The d-tch. Enough said.7. The state of Utah. Enough said.8. Zwift, Peloton, "Spin Class", and other cancer. Enough said.What were some other key moments?
>>2001096I am forced to go on trails with my road bike due to a lack of a mountain bike in my posession
>>1962645Why Utah lol?
>>2002325Personally I like threaded headsets and I can’t see why the industry ditched them. You can’t uncut a steerer after all. Regardless, the normal 1-inch and 1-1/8 inch threadless headsets are pretty the standard these days and I wouldn’t object to the proprietary stuff going away.The difference between that and thru-axles is that you don’t have to worry about bullshit like figuring out the properties of the thread to find a replacement. If you can just look up your bike brand model, cool, but information has a tendency to rot over time, as you’ll find out if are interested in vintage bikes.
>>2002623Pretty sure the standard for mtb nowadays is 44/56 tapered
>>2002607because it is a shit hole full of ______ like >>2002378
I'd like to buy whoever invented the thru-axle a beer. It's a fantastic invention and I have no idea how it manages to be so good. It makes replacing a wheel so much nicer than fucking qr skewers.
ISO724This specifies the metric size for all screws, contact area size and screw pitch. You only needed the length, if not for the (((innovative proprietary companies)))
>>1975165>20mmyeah, had to buy a boost fork for the front wheel>12x135 (rare)scott voltage fr had it. I'm still using that wheel, with a sunringle 12 to 10 adapter axle.
>>2003507Noooloooooo
>>1978747i got my steel thru axle literally seize to the alu hub. then got some anti-seize and problem solved.
>>2003571I'm sure if you added tungsten stuff it would work great
What is it with cycling and roll tops ?Are roll tops our bag ?What makes the roll top the supposedly better bag for cycling ?Also are roll tops the objectively better bags ?
First day?You know there's a thread that's all about bike bags? >1992661
They're slightly easier to overstuff, and there is less to break like a zipper which would cripple the bag, and they are potentially somewhat more water resistant vs your average zipper. They're terrible bags for general travel purposes because if you ever have to check your bag, the hook thing can come loose and then all your shit is all over the tarmac. But for cycling only, they're pretty alright.
>>2001814you posted a broken link
>>2001804Cycling roll tops are usually waterproofed and a roll top is inherently a waterproof design compared to a zipper, even weatherproofed zippers leak but a roll top doesn't even in torrential downpours.
>>2001814where?
I wonder how many people here actually practice what they preach? Not many I'm sure, I can smell the the hypocrisy. Rules for thee and not for me is the rule of the internet.So let's post our walkscores and let's see how bad things really are. If any of the there numbers are under 90 you don't belong here.
>>2000517>posted from my quill pen
>>1995266you should get ahead of Susan and kill yourself first
>>1977050if you don't put in your exact address your score is fake btw
Cannot wait until I can move out
>>2003498What's stopping you
What happened to the future of cycling?
>>2005575The future is now
>>2005579damm I miss old /n/
>>2005579it was a simpler time
>>2005588>>2005589>>2005579This place was so awesome Slow but awesome
>>2005579thank you for your service
