/n/ - Transportation

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recumbent bike

Anonymous Fri 29 Mar 2024 11:41:54 No.1988213 View View Reply Last 50 Original Report

Quoted By:

Why don't you own one with direct front drive?

110 posts and 33 images omitted

Anonymous

Anonymous Sun 30 Jun 2024 16:25:57 No.2006151 Report

Quoted By: >>2006153 >>2009693

>>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/nhqAhYOdGNc

Also 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.

Anonymous

Anonymous Sun 30 Jun 2024 16:26:59 No.2006153 Report

Quoted By:

>>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.

Anonymous

Anonymous Mon 01 Jul 2024 02:59:50 No.2006261 Report

Quoted By:

>>1990227
>>normies can ride it
>I'll pass
Normies can breathe air; will you pass on that too?

Anonymous

Anonymous Thu 04 Jul 2024 06:12:56 No.2006858 Report

Quoted By:

>>1990329
add frame, add roof panels and doors. add comfortable seats, ac and boot space.
hey!

Anonymous

Anonymous Tue 23 Jul 2024 11:10:34 No.2009693 Report

Quoted By:

>>2006151
Any updates?
Thread almost dead.

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Riding Into History - The Final Run of BART’s legacy cars

Anonymous Sun 21 Apr 2024 06:31:06 No.1992466 View View Reply Original Report

Quoted By:

Today, Bay Area Rapid Transit formally retired the last of its original rolling stock that had been in service since the system opened in 1972. The occasion was marked by speeches from BART officials and a farewell excursion between McArthur and Fremont (where the very first train had run on September 11, 1972). I was there and rode the last train.

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Anonymous

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Anonymous Sat 20 Jul 2024 21:40:54 No.2009298 Report

Quoted By:

>>2007311

The new cushioning might as well not exist desu. It’s absolutely awful

Anonymous

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Anonymous Sat 20 Jul 2024 21:43:29 No.2009299 Report

Quoted By:

Anonymous

Anonymous Mon 22 Jul 2024 15:10:49 No.2009548 Report

Quoted By: >>2009689

>>1999290
what is this

Anonymous

Anonymous Tue 23 Jul 2024 02:53:06 No.2009655 Report

Quoted By:

>>1992829
>should of

Anonymous

Anonymous Tue 23 Jul 2024 10:04:01 No.2009689 Report

Quoted By:

>>2009548
An episode of the 1974 Planet of the Apes TV series, which apparently was a thing that existed.

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Palanquins

Anonymous Sun 09 Apr 2023 01:10:42 No.1902636 View View Reply Last 50 Original Report

Quoted By:

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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Anonymous

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Anonymous Thu 04 Jul 2024 06:58:13 No.2006861 Report

Quoted By:

Anonymous

Anonymous Fri 05 Jul 2024 03:03:57 No.2007058 Report

Quoted By:

Reading right now of the battle of Cajamarca in which the Sapa Inca Atahualpa had his palanquin bearers killed from beneath him as he was pulled to the ground by Pizarro's men
>lined with plumes of macaw feathers
>adorned with plates of gold and silver
>borne by EIGHTY CHIEFS in rich blue livery
https://books.google.com/books?id=0QUVAAAAQAAJ&pg=PA53#v=onepage&q&f=false

Imagine seeing an palanquin with EIGHTY bearers
Imagine the sight of that thing coming down as it's bearers were killed, wow

Anonymous

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Anonymous Mon 08 Jul 2024 10:22:12 No.2007513 Report

Quoted By:

Anonymous

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Anonymous Sat 13 Jul 2024 09:51:40 No.2008306 Report

Quoted By:

Anonymous

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Anonymous Tue 23 Jul 2024 10:02:57 No.2009688 Report

Quoted By:

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Korean Air 737 Max 8 plummets 25k feet; US Gov recommend criminal charges against Boeing

Anonymous Tue 25 Jun 2024 16:47:07 No.2005186 View View Reply Original Report

Quoted By: >>2009247 >>2009393 >>2009680

It's beyond over now.
https://qz.com/korean-air-boeing-737-max-8-1851556840
https://www.theguardian.com/business/article/2024/jun/24/boeing-charges-us-prosecutors-737-max-crashes
https://nypost.com/2024/06/25/us-news/us-prosecutors-recommend-doj-charge-boeing/

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Anonymous

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Anonymous Sun 30 Jun 2024 15:44:15 No.2006142 Report

Quoted By: >>2009393

>Airbus has pressurization issue
I sleep

>Boeing has pressurization issue
Ban this plane NOW

Anonymous

Anonymous Tue 02 Jul 2024 19:48:16 No.2006565 Report

Quoted By:

https://www.youtube.com/watch?v=LL9K2jLwYWo

Anonymous

Anonymous Sat 20 Jul 2024 16:25:45 No.2009247 Report

Quoted By:

>>2005186
Fucking hell you fucking retard 5000 ft/min is a perfectly normal descent rate, it didn't fucking "drop", the pilots intentionally descended because of a pressurization issue, and this happens on all pressurized aircraft

Anonymous

Anonymous Sun 21 Jul 2024 11:28:02 No.2009393 Report

Quoted By:

>>2005186
I ain't going if it's Boeing.

>>2006142
Stop being a Boeing shill.

Anonymous

Anonymous Tue 23 Jul 2024 06:25:08 No.2009680 Report

Quoted By:

>>2005186
At flight idle with max spoilers and barber pole minus 20 knots i could outrate that on every jet I've ever flown. It isn't a headline quite frankly.

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Anonymous Mon 22 Jul 2024 15:59:38 No.2009557 View View Reply Original Report

Quoted By: >>2009564 >>2009641 >>2009642

Finally something practical from Crust bikes

20" wheels, breakaway frame, touring geom

1 post and 1 image omitted

Anonymous

Anonymous Mon 22 Jul 2024 16:26:43 No.2009564 Report

Quoted By: >>2009572

>>2009557
didn't david hon do this like 15 years ago with the smoothhound? oh wait that wasn't a mediocre white guy so this has never been done before

Anonymous

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Anonymous Mon 22 Jul 2024 17:13:43 No.2009572 Report

Quoted By: >>2009581

>>2009564
This is a breakaway not a folder
Seems pointless regardless since you can fit a full size bike inside a case

Anonymous

Anonymous Mon 22 Jul 2024 17:43:57 No.2009581 Report

Quoted By:

>>2009572
20" wheels are stronger and accelerate fast, one minor plus.

But also if you're traveling on planes and trains, and staying in small hotels, a 20" wheel is an awesome option.

Also extremely common tire size I think. I love my 20" folder

Anonymous

Anonymous Tue 23 Jul 2024 00:45:02 No.2009641 Report

Quoted By: >>2009642

>>2009557
Nevermind pedal-strikes, that thing looks like it'd strike the derailleur in a tight turn.

Anonymous

Anonymous Tue 23 Jul 2024 00:57:17 No.2009642 Report

Quoted By:

>>2009557
i want something like this but a lil more bmx
like a basic single speed just a rear brake a low frame and a looong seat post like folding bikes have with a quick release seat clamp
with bmx handlebars ofc
idk how i build this contraption but from my research a bmx wont work
>>2009641
modern mtbs derailliers hang even closer to the ground than that lol
ground clearence would be fine if it werent for the 1x memes

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Anonymous Fri 26 Apr 2024 13:10:27 No.1993521 View View Reply Last 50 Original Report

Quoted By: >>2009469 >>2009522

How much does this stuff annoy you train autists? I love trains but in a different way to you

140 posts and 30 images omitted

Anonymous

Anonymous Sun 21 Jul 2024 18:46:29 No.2009447 Report

Quoted By:

>>2005132
wow that train looks pretty cool
would hang on my wall/10

Anonymous

Anonymous Sun 21 Jul 2024 18:47:30 No.2009448 Report

Quoted By:

>>2008276
+1

Anonymous

Anonymous Sun 21 Jul 2024 21:41:28 No.2009469 Report

Quoted By:

>>1993521
I don't like graffiti, especially not on rolling stock. On walls and stationary surfaces it's not that bad if it's actual art, but 99% of it is tag shit that's just ugly and annoying to look at.

Anonymous

Anonymous Mon 22 Jul 2024 07:55:58 No.2009522 Report

Quoted By:

>>1993521
I absolutely love train graffiti. One of my best memories travelling when I was younger was being 10 years old in Budapest and seeing the most vivid, colorful graffiti on one of the subways and it just blew my mind. Ever since then I've had a real appreciation for graffiti

Anonymous

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Anonymous Tue 23 Jul 2024 00:21:22 No.2009639 Report

Quoted By:

>ITT

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/debt/ - Daily E-Bike Thread

Anonymous Wed 24 Jan 2024 07:51:56 No.1975554 View View Reply Last 50 Original Report

Quoted By:

Share your ride, ask for advice, shitpost about 'em, so and on and so on.

All posters with pedal less monstrosities like Sur Ron's will be summarily executed.

205 posts and 38 images omitted

Anonymous

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Anonymous Mon 22 Jul 2024 19:37:49 No.2009604 Report

Quoted By:

Not gonna be doing the holocaust on 4 wheels on this baby :)

Anonymous

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Anonymous Mon 22 Jul 2024 19:39:50 No.2009605 Report

Quoted By:

>>2009594
that's a fat, little, freeloader that likes to go underneath me while I'm squat down putting on the running boards to bite my thigh

Anonymous

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Anonymous Mon 22 Jul 2024 19:44:13 No.2009608 Report

Quoted By:

>>2009592
only complaint so far is that when on the kick-stand the front wheel wants to pivot to one side. When it does that the light is the first thing that comes in contact with the frame before it stops. The light is attached with a cheap plastic bracket and it immediately snapped off.

Anonymous

Anonymous Mon 22 Jul 2024 20:02:00 No.2009610 Report

Quoted By:

Anyone here commute during winter with heavy snow? I'm wondering how well the batteries live during the winter. I don't mind charging often but I'm more curious if they can handle something like -30c without breaking.

Anonymous

Anonymous Mon 22 Jul 2024 21:50:14 No.2009628 Report

Quoted By:

>>1977792
4channers hate everything and are pessimistic about everything because they hate life.

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NJB

Anonymous Mon 22 Jul 2024 15:27:45 No.2009552 View View Reply Original Report

Quoted By: >>2009579

Is NJB moving to Japan?
I hope so! I'm so fed up with all the shills promoting The Netherlands

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Anonymous Thu 11 Jul 2024 16:10:47 No.2008025 View View Reply Original Report

Quoted By:

Yep, file this under “based”.

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Anonymous

Anonymous Sun 21 Jul 2024 09:17:52 No.2009380 Report

Quoted By:

>>2009339
In the mixed level train, single level cars can have accessibility whilst the bi-levels can be there to strengthen capacity. For ADA, just have a section of 2-3 single level cars with toilet access and catering, and ensure that all passengers with those requirements get assigned to those cars.

It has the possibility of expanding transit usage, something that will only benefit Amtrak. In addition, Siemens also make a bi-level for the EU. I can't imagine it would be very difficult to adapt for the US.

Anonymous

Anonymous Sun 21 Jul 2024 09:24:53 No.2009381 Report

Quoted By: >>2009574

>>2008218
>You can be drunk or sleep on the train. That's the argument.
People also have to share a ride with nasty people like you on a train. No wonder cars are overwhelmingly more popular worldwide.

Anonymous

Anonymous Mon 22 Jul 2024 14:33:56 No.2009543 Report

Quoted By:

The great thing about trains is not having to deal with car traffic or sharing the road with looneys who can’t drive.

Anonymous

Anonymous Mon 22 Jul 2024 17:17:52 No.2009574 Report

Quoted By:

>>2009381
So is drunk driving, which is Wisconsin's state passtime (where 75% of the Minneapolis-Chicago drive takes place).

Anonymous

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Anonymous Mon 22 Jul 2024 17:31:13 No.2009575 Report

Quoted By:

>>2009306
Borealis is only $41 each way, pic related for St Paul Union Depot to Chicago Union Station; both of these stations are in the respective downtown areas. If you're getting $100 per trip you're looking at the Empire Builder runs. Those are more expensive since that route goes all the way to Seattle. There are a few expenses that Borealis saves, and is able to pass to consumers.
>No more compensating for train delays
>No overnights for their drivers or crew (just one long as fuck day to go back and forth), saving per diem expenses
>Limited maintenance/fuel stops, since it's just a single day's supplies
So round trip you may be spending around $100, less if you shop around, more if you reserve during peak hours. You also have access to a fairly nice dining car and, of course, the option to have a beverage of your choosing. The Mississippi River Valley in the Driftless Area, which is where the tracks run, is also one of the most beautiful areas of the Midwest, so you can sit back and enjoy the view instead of stressing about driving.

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Anonymous Tue 28 May 2024 19:02:48 No.2000001 View View Reply Last 50 Original Report

Quoted By: >>2006595

What is the intent behind statements like "I'm not a cyclist, I'm just a person who gets around by bike"?

At a surface level it is obviously meant to (proverbially) throw other cyclists under the bus, but to what end? Would it somehow appease the anti-bike people if the person "blocking traffic" didn't agree to be referred to by the word "cyclist"?

68 posts and 9 images omitted

Anonymous

Anonymous Wed 19 Jun 2024 21:00:05 No.2004235 Report

Quoted By:

Actually it is often used in reverse. People will say, "that's not a cyclist its a guy on a bike" to separate the brain dead tools that blow stop signs, ride on sidewalks, ride against traffic, etc from people that can coexist peacefully with traffic. Many people that ride bikes really aren't cyclists, they are pedestrians with wheels.

The entire distinction is pointless anyway. Non-riders (and self hating cyclists who, "drive their bike to the park and only ride on the paths") will always lump anyone on a bike together. The transgressions of everyone from children, teens, the homeless, clueless casuals, hooligans, lycratards will be attributed to cyclists as a whole.

Anonymous

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Anonymous Tue 02 Jul 2024 20:33:34 No.2006575 Report

Quoted By:

>$5000 bike
>$5000 bike made of obsolete parts

Anonymous

Anonymous Tue 02 Jul 2024 21:40:09 No.2006595 Report

Quoted By: >>2006632 >>2009566

>>2000001
To separate themselves from those Critical Mass lycratards.

Anonymous

Anonymous Wed 03 Jul 2024 00:41:58 No.2006632 Report

Quoted By:

>>2006595
critical mass is really about cycling for fun, utility, and commuting. not really for the lycracucks.

Anonymous

Anonymous Mon 22 Jul 2024 16:39:40 No.2009566 Report

Quoted By:

>>2006595
nobody who does critical mass can afford bibs

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Riding Into History - The Final Run of BART’s legacy cars

Palanquins

Korean Air 737 Max 8 plummets 25k feet; US Gov recommend criminal charges against Boeing

/debt/ - Daily E-Bike Thread

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