Show us your bicycles!

[AlfaNovember]

Also 16.5 lbs isn't that light any more

Gary Helfrich was fond of saying he'd build you a Ti bike as lightweight as you wanted - name your number - All he needed was a tubeset, his tools and welder, a stopwatch, and a swimming pool filled with acid.

(No guarantees on durability)

 

[Somafunk]

^ Quote from Keith Bontrager : Light, Strong, Cheap - pick two

 

[pseudoid]

^ Quote from Keith Bontrager : Light, Strong, Cheap - pick two

Some of those combinations just don't work:
Light+Strong?
Light+Cheap?
and even:
Strong+Cheap?
I even think:
Light+Exercise << don't make a winning formula.

 

[Doodski]

Strong+Cheap?

This one is possible by using less expensive heavier and easier to work with materials that reduce the overall cost of manufacture. Like a heavy rim that can take a beating compared to a lightweight one that costs an arm and a leg for the same but lighter.

Light+Strong?

Again a light and strong rim is made all the time.

Light+Cheap?

I've can't say I have experienced a lightweight rim that is cheap... LoL.

 

[Somafunk]

Some of those combinations just don't work:
Light+Strong?
Light+Cheap?
and even:
Strong+Cheap?
I even think:
Light+Exercise << don't make a winning formula.

Copy/pasted from another site

Keith Bontrager is from a great biking nation : California , USA. His name appears on most things that go with Trek bikes. This legend in modern bike world created some of the most innovative designs in mountain bikes. During the late eighties and early nineties his Santa Cruz made bikes were highly desired due to their quick handling and unique designs. Holed-up in his garage, he worked on broken cycle parts for hours and hours to learn the defects and to develop some of the best components and frames for the bike-world.
Keith Bontrager’s famous aphorism: “Strong. Light. Cheap. Pick Two” stands the test of times.
Yes, I can pick a strong and light bicycle, and then I cannot get it cheap. I can pick a light cycle and which is cheap, then I cannot have it strong. I can pick a strong cycle which is also cheap, if so, I cannot get it light !

 

[Chrispy]

Copy/pasted from another site

Keith Bontrager is from a great biking nation : California , USA. His name appears on most things that go with Trek bikes. This legend in modern bike world created some of the most innovative designs in mountain bikes. During the late eighties and early nineties his Santa Cruz made bikes were highly desired due to their quick handling and unique designs. Holed-up in his garage, he worked on broken cycle parts for hours and hours to learn the defects and to develop some of the best components and frames for the bike-world.
Keith Bontrager’s famous aphorism: “Strong. Light. Cheap. Pick Two” stands the test of times.
Yes, I can pick a strong and light bicycle, and then I cannot get it cheap. I can pick a light cycle and which is cheap, then I cannot have it strong. I can pick a strong cycle which is also cheap, if so, I cannot get it light !

Similar to audio's Hoffman's Iron Law

 

[pseudoid]

Similar to audio's Hoffman's Iron Law

I had to look it up:

Hoffman’s Iron Laws of Speaker Building
1) Bass Extension
2) Efficiency
3) Small Enclosure
Link

 

[Holmz]

Copy/pasted from another site
…
Yes, I can pick a strong and light bicycle, and then I cannot get it cheap. I can pick a light cycle and which is cheap, then I cannot have it strong. I can pick a strong cycle which is also cheap, if so, I cannot get it light !

I think most people know that there are 3 combination of N-Choose-K for 3 choose 2.

 

[Juhazi]

My faithful companion from 1970s after wash. Which one to choose today?

 

[Moonhead]

Nice.. maybe a Helkama Jopo from Your Home country Will do.
Had one for a while, really fun cruiser bike.

https://bicycleanhelsinki.com/en/shop/bicycles/city-bikes/helkama-jopo-24-1-speed-city-bike/

 

[Juhazi]

My bike is clone - Nopsa Fleur. Third similar structure bike was Tunturi Poni. Original Jopos had a pressed steel frame that was welded from two left/right mirrorlike sections and a hinge. Modern ones have ovoid tubular frame like Poni and Fleur. The idea was to make it fit for children from 10 years up to adults and easy to haul in a car's trunk. Originals had small 22" rims, mine has 26".

 

[JaccoW]

Some of those combinations just don't work:

I don't know why you would think that?

Light+Strong?

Titanium rims maybe? Similar weight to aluminium but at the strength of steel. It's just that extruded titanium is extremely difficult, and thus expensive, to make.
Or make the sidewalls extremely thin and use an internal carbon fibre truss system to increase strength.
Add dyneema spokes and you've got a nice lightweigh option that is probably insanely over engineered.

I doubt we are at the maximum possible limit of how light and strong a wheel can be built.

Light+Cheap?

Just make a rim that can only hold up the weight of a lightweight rider and nothing more. Something like a wheelset with a maximum weight rating of 50 kg.

Strong+Cheap?

Some of the strongest wheels are heavy and use thick steel rims with straight pull spokes.

 

[herr.jemine]

Some of mine:

self-built, a carbon xc hardtail, 9 kg:

self-built, a carbon rimbrake racer, 7.2 kg:

VAN RYSEL EDR CF Ultegra:

​

 

[GandalfTheAudiofool]

Like several in here, I've got a Specialized (pictured here on the car of a friend who owns something insane like 12 bicycles!). It's a Camber (model no longer made) from around 2014/2015 I'd say. It's an S-Works so full carbon including carbon wheels. It's as in the 7 years old vid posted here where they crush an (already old) carbon frame: this thing simply doesn't break with what I do to it. Not even after ten years.

The one recurring issue are the spokes: to me they fucked up and they are too brittle. So I get them replaced by better ones when they break.

 

[Chrispy]

Like several in here, I've got a Specialized (pictured here on the car of a friend who owns something insane like 12 bicycles!). It's a Camber (model no longer made) from around 2014/2015 I'd say. It's an S-Works so full carbon including carbon wheels. It's as in the 7 years old vid posted here where they crush an (already old) carbon frame: this thing simply doesn't break with what I do to it. Not even after ten years.

The one recurring issue are the spokes: to me they fucked up and they are too brittle. So I get them replaced by better ones when they break.View attachment 374863

Curious, just what spokes did they use and what are you replacing with? 12 bikes is insane? Whut?

 

[JaccoW]

Here are some beauty shots before I take the Koga-Miyata 'Graveller' apart for travel. The plan is to ride from Paris to Santiago de Compostella and just enjoy a couple of weeks of touring, camping and just being out and about.

The weather for the first week is supposed to be a good temparature at 20-23°C (68-73°F) but at least some rain every single day.
Not sure if I want to go through the faff of adding the fenders again.


Drivetrain side shot


From the front. You can really see the wide bars and the cross levers here


Close up of the headset and new position of the headlight.


Rear view


Headlight with modified cable and an old chainring as a light mount


Dynamo light standlights

 

[Count Arthur]

I love the light bracket.

 

[herr.jemine]

I love the light bracket.

brilliant and elegant solution

 

[herr.jemine]

Curious, just what spokes did they use and what are you replacing with? 12 bikes is insane? Whut?

looks like a Specialized Roval Control SL Cross Country wheelset, extremely lightweight, only 1240g, spokes probably DT Swiss Competition Race, I think the wheelset is so extreme that it reacts very sensitively to the rider's weight and often has problems

 

[MoreWatts]

12 bikes is insane? Whut?

You are obviously not familiar with the concept of "N+1" when it comes to bicycle ownership. How many bicycles does one "need?" One more than you currently own.