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Why don't you own one with direct front drive?
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Cuntmobile is back lmao
Had a good laugh in the old thread
anoyone know where i can find a new headrest for my M-009 tadpole that doesn't cost $90?
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>Actually a couple months ago I did some airflow simulations, the result was that my design is shit.
Pic related. I went with forward slanted windshield. Also on the side the top is slanted outwards. To protect against the sun. At the front the window is bigger for better visibility.
Enclosed wheels. The whole velo is quite high, because the hottest air is always at the top and there is also where the head is, so I tried to give more headroom. But extra height is not good for aerodynamics. Forward slanted window also not good. Mainly I think, because of high sides, so the air doesn't have anywhere to go. But I need these high sides because of the riders shoulders and also the wheels.
I was also trying with different angles at the back (kammback style). For my surprise the sharp transition from main body to the angle gave better results than smooth (fillet) one.
Aerodynamics is though.
Design issues I see right off the bat.

>Large profile: will act as a sail in crosswinds
>Large windows: adds a lot of weight if using a hard material or very scratch prone if using something lighter and weaker. Will need to be replaced, which will be expensive and a PITA.
> Condensation: the thermal difference between inside and outside will condensate the air on the window. Unless you have some kind of holes or fan that blows air into it.

Current commercial velos (Bulk, snoek, and the likes) the the way they are because of a reason, and your velo defies all of that. If you go for style rather than efficient you'd still have to solve the issues I greentexted. Wishing you good luck.

What software is that btw?
>Large profile: will act as a sail in crosswinds
Some say that can help go faster, sailing like a sail boat. I assume it might work in steady winds, but in sharp abrupt winds seems to be more trouble.
Otherwise I agree with all you said. That all was my concern, but I was playing around with forward slanted window design and I ended with this shape. if it would prove to be good aerodynamically, I might compromise on other stuff, but it is not.
Also it's impossible to see any traffic lights, because you can't see above eyelevel.
That is why I have abandoned that design. It is no good on any aspect. I thought of it, I tried it. In a trash it goes.
Next one will be more slim and compact. And small window. I still want to make it forward slanted though.
I've got some new ideas, I'll see how it goes.
Software is solidworks.

Is he still around?
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You're out in lycra riding your campagnolo fitted road bike and this guy points a gun at you and says "haandit ower,,, sumunabitch"

Your move?
*pulls up next to you on a trike, points a gun
We love you bacon

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am i retarded how is this possible
this doesnt seem sustainable in the long term
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Get a load of oscar romero here taking a bullet from the woke mob who would steal the the poor oppressed oligarchs's gulfstream jets if not for their heroic martyr defending their right to shit up the planet
>making third world migration to the first world easier than ever
Can't wait for Europeans to get Hondurans
This, I also support oppressing the poor further
They are getting out of line these days

,,,,jump to26;00
I work for a mid-tier carrier as customer support, traps are gay, any other questions?

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>bike got stolen last november
>whatever it's cold soon anyway
>also bought a car in december
>missing outside activity other than running, really miss going on trails etc.
>considered buying another bike but also like the idea of skating because I enjoy ice skating and am pretty good at it
>also would fit in car easier than a bike
What are some good beginner cheapish skates for a big guy with wide feet?
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can confirm, I thought 3 big wheels looked cool to start on and I live in an area surrounded by hills, no bueno. You pick up to mortal speed pretty quickly so learning to stop and build leg strength right away was a big challenge. Also tore my TCFF in my wrist because I forgot about guards.
I think wrist guards are a great safety net for inexperience in hindsight.

tldr; 4 wheels probably less fast and more manoeuvrable
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pickrel: 3x100 k2 lt trios
I have worn them to pieces
I also have a 4x110 k2 marathons but they are to stable for me. very fast though.
I'm looking at getting some 3x125, probably powerslide. but The fr skates do look good.
>tldr; 4 wheels probably less fast and more manoeuvrable
I think it's the other way around, 4 wheels gives high speed stability at the expense of low speed agility. 3 big wheel skates pick up speed faster and have better turning agility at the expense of stability. This is of course a generalization, what's more important than wheel count is wheel size and skate length, however, number of wheels do heavily dictate ideal wheel size in a skate's design. Bigger wheels give a smoother ride but brings CoG higher off the ground resulting to less stability and more agility, opposite for smaller wheels. Those 3 factors are like a bike's geometry and heavily influence how a skate feels. I'm not an expert in the subject (am a bikeboy) but I'm familiar, interested, and I do intend to buy my own set of skates soon enough
/xs/ has a roller blading thread, /rag/, that is sorta active. The newfag buy question is fairly common there, I'd recommend lurking through it if you want to get some reviews.
thanks for the info crossboard anon

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Old beater edition
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rule of thumb that Ive heard is ~1 metric ton per 10 horse
so by that logic, you should be able to get about 2.5 to 3 tons out of it
>Would you intrested in some progress pics?
>should I spam them or make a mega folder
Im good with either
Cheers for being helpful.
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My maglev proposal for China.

What do you think?
nah too expensive
I legitimately do not understand the preoccupation some people on this board have with chinese maglev, waco to branson maglev, ougadougou to bujumburi maglev, or any other such irrelevant speculations, and it makes me think the "chang" shitposter might be on to something. Literally what is so boring about the NEC, western europe, taiwan, peninsular malaysia, or japan, that makes these other (irrelevant) places so worthy of your attention? Other than the fact that you see them as probable future colonies for the CCB-Tencent corporation's future workforce, but if that were the case you'd be targeting Taiwan too so it just doesn't make any sense
I don't understand the appeal, especially when they already have an impressive HSR network. The benefits of maglev compared against HSR are very minimal. Maglev pretty much exists as gadgetporn.

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narrower and higher pressure tire IS faster
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post sauces
as far as i know there is no hard evidence only speculation based on ideal conditions
in the real world based on actual experience it seems to not be true
fat tyres dont seem to roll any worse to me and in not ideal conditions (the real world) fatter tyres roll faster
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It's obviously a 110 and 140. Nobody makes 150/55.

That's still a relatively wide tire, thoughever, a much lighter prototype racing bike of that displacement uses a 90 or 100 front and a 115 or 120 rear.
If you only ride on smooth glass, sure.
My favorite feeling is when my tire pressure is dialed in just right and the tire deflection under cornering rebounds so predictably, I love it. It has a weird feeling of being soft and firm at the same time, it's kind of like that feeling of a really good pencil eraser
This approximately the same reason why I'm slower with clipless than with pinned flats. It's a confidence issue.

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The science is in, rim brakes are and always have been superior to disk brakes in every metric, weight, stopping power, aerodynamics.

The ONLY exception, and there are caveats even to that, is on carbon rims, which are gay.

Watch the first part to see the sciencey bit about how the industry lied about disks to force consoomers into buying cheaper to manufacture disk brakes for more money

tfw when they pushed disk brakes in order to usher in a world where everyone would be proud to pay over the odds to ride bikes made of chinese plastic, including fragile plastic rims that cannot withstand the forces of rim braking without exploding in a catastrophic fashion.
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You're just a contrarian who wants something to argue about.

Wrong. Not true. Don't care about your gay eceleb. Also you're gay and wear lycra.
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This video is literally an advertisement for their product. Everything they said about disc breaks is true but they only really mentioned it in regards to aero TT/Tri bikes. Yes there's no reason for dick brakes if you just was a fast aero light bike.

All other use cases are unmentioned because, surprise surprise the dick breaks offers a better compromise for more people. Sorry to all the rim brake fags out there but it's not like you can't still go out and get a nice used rim brake bike
What the fuck is this rim brakes vs disk brakes meme, I don't use /n/ often but I see it all the time, I've had bikes with both systems and they're both fine, what's all the reeing about.
we like to be angry and autistic
hydro discs make my dick

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Is grant petersen's quote still true?
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this but replace the jeans with a good jacket and the dutch bike with an old mtb and its trueer than ever
No. They are made for riding slow through a dense flat city traffic.
>*charges you $5000 for an obsolete piece of shit in your path*
nothin personnel kid
tells you a lot about his character that he bases his purely capitalistic marketing approach on shitting on what others enjoy
peak neoliberal faggot

Still the most noble form of transportation is to be carried around by others, walking yourself is for plebs. Show us your palanquins then!
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can palanquin carrying be a good workout or no
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yes, it is a great workout.
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What are the considerations needed to make between choosing a locomotive or MU to power a train?
I know passenger trains in Europe tend to be MU but freight is always locomotive hauled.
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Why aren't Jacobs bogies more of a thing with coaches? I can only think of the TGV as an example of a locomotive + articulated coach set. They seem to be a neat idea, you can save weight and increase capacity for a given train length, lots of EMUs (like pic related) use the configuration.

I understand that freight wagons might have issues due to axle loading limits, but coaches are far lighter.

That's weird, maybe they're in a coach 'set' of 6 that are semi-permanently coupled together?
I'd imagine that disconnecting & reconnecting the cab car would be a pain so it's just easier.

It's wasted energy and there's still wear and tear to consider. Though as you say that might be negligible.
>Jacobs bogies
main downside is that cars sharing a bogie are a bitch to seperate, while the whole point of using sperate cars instead of an integrated multiple-unit design is to be flexible in their combination.
Btw, I've seen similar designs (not sure if technically a jacobs bogie or if there's special terms for it) in car-transporters and container train cars, making two-car consists with 3 or 6 axles respectively.
I've always heard them referred to simply as articulated cars, jacobs bogie I only hear in reference to passenger equipment. Articulated autoracks are two cars, articulated well cars can be up to five cars, at least in US. 3 and 5 car articulated well cars are very common. I don't see it as much with autoracks.
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>Why aren't Jacobs bogies more of a thing with coaches?

When going through the trouble of Jacob's bogies, it makes no sense to have them on 'dumb' coaches. If you want to keep the axle load in check, the middle sections will get about half the capacity of a full coach - or even less when vestibules are considered. Jacobs bogies are also troublesome to rearrange the train, if it's not an EMU, then why limit the inherent flexibility of the wagon consist?

This is why they are popular on EMUS, but not traditional coaches.

However, this does not mean there weren't any. A famous example was British Silver Jubilee coaches originally pulled by A4 Pacifics. Pic rel is a German-made four-car set of Polish railway's double deckers which were phased out a few years ago. Those have three axle Jacobs bogies and were being used as two, three and four car sets. Romania, I think still uses these.
I'm only asking as it seems like most passenger trans are made of coach sets where you have a number of them coupled together for a long period.

The axle loading doesn't shoot up nearly as fast as you might think, a coach is an air-filled with some seats, racks, etc inside. Also, each section in an articulated set is shorter to reduce overhang inside the curves, but there's a reduction in the number of bogies over the whole train length.
The overall weight of the train goes down too, as each bogie is heavy. Maybe ~6 tons each for a lightweight design, which adds up. E.g. for a train of 8 coaches that could be a full coach's weight.

I get that this is probably more of a consideration where acceleration/ high speed performance is needed. As you say, for Amtrak and other long distance/slower services the consideration changes to reliability and easy maintenance.

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Which is better for everyday travel throughout the city? Context: my city has shit bike infrastructure and there’s not enough space to bring a bike inside a metro or bus.
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Rollerblades with air tyres offer too much rolling resistance. For donhils they are good, but that's it.
Escooter or ebike. Non powered modes of transportation are a meme, especially for hilly cities/long travel
I kind of want blades but they're 200 dollars for decent ones.
Buy a car if that's the case.
I prefer to haul my fat ass up the hill under my own power(200 W).

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By pic related.

>Saudi Arabia has been forced to scale back its $1.5trillion plans for a 106-mile linear desert megacity, according to reports, in a humiliating climb down for the kingdom.

>The Line - part of the country's audacious and futuristic NEOM project - was meant to be home to around 1.5 million residents by the end of the decade, with plans to ultimately increase its full capacity to nine million people.

>Now, according to people familiar with the project, the development will only stretch 1.5 miles and house fewer than 300,000 residents by 2030, according to a new report from Bloomberg citing sources close to the project and documents.
Lol it didn't take long to happen exactly what /n/ said would happen.
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If shitting on model's chests is a defining feature of a place's recreational priorities then yes, actually it is a culture. Again, culture doesn't just mean "stuff I like". In fact, very often, it will be a lot of things you find disagreeable. Read a book some time
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kek it's going to scale back to being just a building in the middle of the desert at some point.

why the fuck couldn't MBS just turn Jeddah into Tokyo 2.0. I guess the Emperor has no clothes in Saudi Arabia

it's a country ran by braindead yes-men.
>Why not just spend all your oil money on desalination and vertical farming so your people are self reliant?
Funny that you say that.
Ironically, Saudi Arabia used to be self reliant, in fact, the largest diary of the world used to be in Saudi Arabia (too lazy to look up the link, so, trust me, bro!) and they were self reliant on grains and maybe alfalfa and stuff, because they have (well… had) huge, prehistoric aquifers under the desert so they not only drilled for oil but also for water and went farming.
But of course, being retarded, they overexploited the aquifer (Which is not reneable) and now they don't farm that much anymore.
So that leaves desalination.
Yes, with loads of "free" solar, that could work. But they already do a lot of desalination (probably not solar powered though…) but a few years ago I was at a conference and some dude was talkingaout how the red sea already is getting notabley more saline because of this, so if they scale that up even more, they'll fuck up their sea too.
What was my point? Forgot. I'm drunk and I'm watching a documaentary about submarines.
lol, arabs.
Your average amerifat constituent can't even find Saudi Arabia on a map, let alone gives a shit about their petrodollar-funded pipe dreams.

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Do you enjoy any /n/ games, like city builders and tycoons?
>picrel OpenTTD, the best transportation game
If not a game, what software would you use to make model junctions and rail systems? /diy/ has solidworks, autocad, etc. Unironically a dumb game like OpenTTD seems to be the best option for exercising what you learn in your hobby, at least for free (so, not including real model railways.) It's also just fun as fuck.
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I love Railroader, but the scenery is very bare bones. Let's hope they have finished this game in a couple of years time.
i like spectating the transport autists in openttd multiplayer games
I'm looking forward to Century of Steam.
Hyce is an annoying autist, but the game itself looks alright. I'm not buying any more early access train games though. The release of both Derail Valley and Railroader is probably seven years down the line.
I can always go back to OpenTTD...
It's no struggle, really. Cities in motion 2 shows that it's perfectly possible to come up with a simulation where one can timetable trains every 5 simulated minutes, and things work just fine on a day/night cycle, and you can easily manage a public transit network encompassing dozens of lines.

The problem might be that it restricts the game's appeal to people who don't mind setting a train's timetable, even though the developers tried to automate the drudgery as much as possible (only one click to set vehicles departing every hour/every 15 mins/etc).

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