The Velodrome

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Erlkoenig

09:02

It's so funny, the online motorcycle community is constantly up in arms about countersteering, like how and when to do it and whether it is necessary. Meanwhile cyclists: Ride just like you learned as a child and don't think about it 🤣

Renaud

09:33

I'm sure that the motorcycling community would also make fun of the cycling community on the discussions about nutrition or aerodynamics :p

Michael

or weight

1 hour later…

Erlkoenig

10:59

Well racing motorcyclists do care about aerodynamics, seat position, and definitely also weight

The funny thing is that it has been repeatedly proven that countersteering is absolutely necessary, at all speeds, can't be avoided. Every child on a bike does it intuitively, and so do motorcyclists, without consciously realizing it. But they somehow they doubt it, wonder how to do it, think you can ride without it...

1 hour later…

Michael

12:04

@Erlkoenig well, you can build a ≤2 wheeled bike which stays upright without countersteering

just needs gyroscopes or reaction control wheels or thrusters and control circuits :}

Erlkoenig

With thrusters you don't need wheels at all anymore 🤣 Inertial reaction wheels need to be "discharged" (spun down) to avoid saturation, and for that you need to stabilize the vehicle against the resulting force, which will require... countersteering. Or it only works for VERY specific routes (with neutral cumulative direction changes)

4 hours later…

Robert Atkins

15:56

Can anyone suggest a valve adapter that doesn’t suck? It needs to have a Schrader valve at one end (I want to plug it into an electric pump you can’t remove the hose of.) I saw someone post in a comment once there was only one brand worth a damn, but I lost the link.

I don’t think the Lezyne ABS-1 Pro will work for me for example, because it needs to be clamped directly onto a (specific diameter of) hose.

MaplePanda

Valve adaptor for using a Schrader pump on a Presta valve?

2 hours later…

Robert Atkins

18:33

I mean like one of these but not shit: https://www.amazon.com/SKS-Bike-accessories-Multi-Valve-Header/dp/B003FVCWI4/ref=sr_1_2?keywords=bike+pump+valve+head+replacement&qid=1708281069&sr=8-2

(Not necessarily the lever type, a design similar to the Lezyne on the tyre end would work, but it needs to have a tyre-side schrader thread on the other side so I can plug my current pump into it without modifying the hose or fitting.)

Michael

screwing an adapter on and off every time sounds like a hassle and bad idea

MaplePanda

18:50

does one of these puppies not work for ya?

Erlkoenig

@RobertAtkins SKS is usually decent quality

The SKS Rennkompressor pump that probably uses this exact valve adapter is widely popular

Robert Atkins

19:14

These things fucking suck.

I don’t know what the fuck is wrong with my tyre, my adapter or my valve, but it never fucking works and due to as far as I can tell what their principle of operation is I can’t tell how they work for anyone, anywhere at any time.

Erlkoenig

Hmm, even the cheap adapters like that work at least when they're new

Robert Atkins

What I want is something like the thing I linked on Amazon (of a type which I will leave permanently attached to the hose on my pump) that does not suck arse. By which I mean it goes on without any friction, seals airtight when you close the lever and then comes off without any friction when you release the lever.

Erlkoenig

What's wrong with some friction?

Robert Atkins

How?! Screwing the adapter onto the (top, “coarse”) thread of the presta valve does not create an airtight seal without the o-ring and often enough doesn’t even with it.

Erlkoenig

You're not supposed to screw it on. You just jam the valve in there and close the lever

Robert Atkins

19:21

When the friction releases suddenly, all the effort you were putting into pulling it off the valve translates into your hand rising rapidly upwards and hitting the cassette, gouging a chunk out of your hand. Screwing the cunt off slowly lets all the air out of your tyre in the process.

There’s no lever, I don’t have one of the lever-actuated things on my pump hose at all right now. It’s just a Schrader thread.

Erlkoenig

I never had a pump that had this crazy amount of friction. Sure you're using the lever the right way?? Often the positions open/closed are the other way round than you'd expect

Robert Atkins

Yes.

I am sure.

Erlkoenig

Of just buy a lezyne track pump, they're pretty good ¯\_(ツ)_/¯

Robert Atkins

It’s worse on kids bikes with 16” wheels, to be sure.

I don’t want a Lezyne track pump, I want something I can put on the end of bosch-diy.com/gb/en/p/easypump-0603947000

And I want that because between myself, my wife and my kids I have six bicycles whose tyres I all need to keep inflated.

Erlkoenig

I think it's going to be hard finding anything better than the SKS valve adapter

As kids, we used to pump up our own tyres... without electric pumps 🤷‍♂️

Robert Atkins

19:36

When you were four?

Erlkoenig

I wasn't four for long, and didn't ride that much at this age

Robert Atkins

Do you understand how this is incredibly pointless and unhelpful?

Erlkoenig

That's my specialty

The Bosch pump comes with a presta adapter

Erlkoenig

20:07

Typical Bosch quality

1 hour later…

Criggie

21:18

I've used the screw-on adapter a couple times and they worked fine for me. Just need to back-off the acorn nut first.

Erlkoenig

21:50

Today's ride featured a 700yo castle, another 500yo one, a huge 300yo palace, a 1800yo roman mansion (with floor heating), a 200yo brewery, and lots of old churches

Criggie

22:26

@Erlkoenig that's 3 and a half millenia of riding. You must be tired!

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