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-   -   Is a spare bike necessary? (https://www.bikeforums.net/showthread.php?t=1204269)

indyfabz 06-12-20 07:34 AM


Originally Posted by Kapusta (Post 21529668)

Think about it: you are ready to go out on a road ride and you find a mechanical. What are you going to do? Take the gravel bike?!? Thatís crazy talk!

Iíd take the touring bike. But I couldnít ride the road bike for a loaded tour.

Kapusta 06-12-20 07:37 AM


Originally Posted by indyfabz (Post 21529681)
Iíd take the touring bike.

Some people have no shame :(

AlmostTrick 06-12-20 07:41 AM

Lots of good info in this thread. I thought I had everything covered, but now can see I'm dangerously low on spare bikes! ;)

Homebrew01 06-12-20 07:49 AM

MOD NOTE TO ALL. Posts of an insulting or derogatory nature violate Bike Forums guidelines.

Homebrew01 06-12-20 07:50 AM

Riding ONE bike on the sidewalk is bad enough !


Originally Posted by bikecrate (Post 21527961)
Yes, make sure you have them at all times just in case.
https://cimg6.ibsrv.net/gimg/bikefor...1412726afd.jpg


sw909 06-12-20 08:05 AM

everyone needs a commuter and a sunday best, right?

indyfabz 06-12-20 08:52 AM


Originally Posted by Kapusta (Post 21529685)
Some people have no shame :(

Better than not riding at all.

PJay120 06-12-20 09:11 AM

You should have spare bikes like SRV has spare guitars in this video, at the 2 minute mark...


Happy Feet 06-12-20 10:01 AM


Originally Posted by PJay120 (Post 21528395)
I did teach my son, who has been road-biking with me for about a year, the formula for how many bikes you should have. Most know this, but a refresher is good now and then.
Let n = number of bikes you have. Let n = number of bikes you should have. The formula for how many bikes you should have can be determined by plugging that value into this formula:

n = n + 1


Originally Posted by Koyote (Post 21528424)
That equation makes no sense. Subtracting n from each side yields:

0 = 1

The explanation is a little convoluted. "n" can't represent two things in the same formula.

The formula for the number of bicycles you need is n+1. That is all. n is the number of bikes you have.

This is the formula you run when considering whether you should buy another bike. It also works when the wife looks in the garage and asks "How many bikes do you need?" I usually remain silent but secretly run the formula through my head.

But I think this whole discussion is a little pointless. What one really needs is a spare rider. For those days when you feel you should ride but want to waffle. Just kick the spare out of bed and say "go ride". Clones would work I think. A twin if you should be so lucky.

fietsbob 06-12-20 10:06 AM

Maybe as a bike commuter . the late start flat tire discovery , have a spare to grab you may not get fired for being late.

2old 06-12-20 10:16 AM

Mandatory for me even if it's a beater. Riding anything (for me) is about 95% as much fun as the optimum.

Koyote 06-12-20 10:24 AM


Originally Posted by Happy Feet (Post 21529983)
The formula is correct but the explanation is a little convoluted. "n" can't represent two things in the same formula.

Let n represent the number of bicycles you need. That is all. The number of bikes you need is equal to the number of bikes you need +1. Even if you eliminate n from both sides of the equation (which you wouldn't because then there is no equation) you still have +1.

This is the formula you run when considering whether you should buy another bike. It also works when the wife looks in the garage and asks "How many bikes do you need?" I usually remain silent but secretly run the formula through my head.

But I think this whole discussion is a little pointless. What one really needs is a spare rider. For those days when you feel you should ride but want to waffle. Just kick the spare out of bed and say "go ride". Clones would work I think. A twin if you should be so lucky.

No, the equation is definitely invalid. And if you subtract n from each side, you do still have an equation (two values separated by an = sign) which becomes 0 = 1. Which is why the equation is faulty.

What you are trying to represent is: x = y+1 Where: x = optimal number of bikes, and y = current number of bikes.

Happy Feet 06-12-20 10:50 AM


Originally Posted by Koyote (Post 21530023)
No, the equation is definitely invalid. And if you subtract n from each side, you do still have an equation (two values separated by an = sign) which becomes 0 = 1. Which is why the equation is faulty.

What you are trying to represent is: x = y+1 Where: x = optimal number of bikes, and y = current number of bikes.

I would've thought that Canada had better math education, but apparently I'm wrong about that.

Haha... I changed my post already. Teaches me to post before coffee :)
So the equation would be:
How many bikes do I need = n+1
How many bikes do I need could be represented by y (or any other letter but not n).

unterhausen 06-12-20 01:10 PM

I don't know, the proper number of bikes is n = n+1, where n is the current number of bikes, --update as needed-- seems perfectly valid to me. It's also a valid equation in every computer language I know.

Koyote 06-12-20 01:28 PM


Originally Posted by unterhausen (Post 21530335)
I don't know, the proper number of bikes is n = n+1, where n is the current number of bikes, --update as needed-- seems perfectly valid to me. It's also a valid equation in every computer language I know.

How can a number equal itself plus another number? (Assuming the other number is not zero.)

Marylander 06-12-20 01:38 PM


Originally Posted by Koyote (Post 21530362)
How can a number equal itself plus another number? (Assuming the other number is not zero.)

n=n+1 is assigning a new value to n. It's not a math equation.

Happy Feet 06-12-20 01:40 PM

Technically, it is a math equation. Algebra

My vote is for:

y being the number of bikes needed
n being the number of bikes currently owned
y = n+1

Koyote 06-12-20 01:43 PM


Originally Posted by Marylander (Post 21530382)
n=n+1 is assigning a new value to n. It's not a math equation.

Wrong.

We're way off-topic here...But an equation is a statement that asserts the equality of two mathematical expressions. In other words, if you have two statements with numbers and/or variables (such as n) and they are separated by an = sign, that is an equation.

Again, if you want to assert that the optimal number of bikes (y) is the current number (n) +1, then state it as: y = n+1.

Kapusta 06-12-20 01:44 PM


Originally Posted by Kapusta (Post 21529685)
Some people have no shame :(


Originally Posted by indyfabz (Post 21529832)
Better than not riding at all.

..... or humor.

Marylander 06-12-20 01:53 PM


Originally Posted by Koyote (Post 21530394)
Wrong.

We're way off-topic here...But an equation is a statement that asserts the equality of two mathematical expressions. In other words, if you have two statements with numbers and/or variables (such as n) and they are separated by an = sign, that is an equation.

Again, if you want to assert that the optimal number of bikes (y) is the current number (n) +1, then state it as: y = n+1.

No, what it's saying in plain language is "set the new value of n to the current value of n plus 1". This sort of thing is standard in programming where you're doing something like looping. It really isn't algebra.

Koyote 06-12-20 02:01 PM


Originally Posted by Marylander (Post 21530410)
No, what it's saying in plain language is "set the new value of n to the current value of n plus 1". This sort of thing is standard in programming where you're doing something like looping. It really isn't algebra.

Without some sort of limit, doesn't the value of n essentially become...infinity?

This thread has finally become interesting, at least for me.

Leebo 06-12-20 02:02 PM


Originally Posted by Paul Barnard (Post 21526859)
Why do the mods put up with this crap?

You are welcome to A, scroll by or B, put down your thoughts, cheers.

Happy Feet 06-12-20 02:08 PM

Interesting...

Technically, it is an algebraic equation. Both sides of the = sign needing to have the same value.

However, if programming, you could write a code that says add one to the number inputted ie. n = n+1. A common Excel cell equation.

But in the bicycle case, I think the equation always refers to a question being asked ie. How many bikes do I need? How many bikes do I want? How many bikes is enough?
In that case the standard algebra form takes effect. "y" being the question and "n" being the current number of bikes owned.

In the coding sense. How many bikes do I need? does not equal how many bikes do I need +1. That doesn't make sense.

Leebo 06-12-20 02:09 PM

Lets see. Road, casual road flat bar, gravel( 1x1 with fatties) daytripper exploring( karate monkey with sus fork), bikepacking rig( rigid krampus) fat bike, full sus, a road touring /grocery getter setup. Nope. Nothing extra, got all the basic ones I need, nothing extra.

unterhausen 06-12-20 02:12 PM


Originally Posted by Koyote (Post 21530431)
Without some sort of limit, doesn't the value of n essentially become...infinity?

and you see some problem with this?
Just because some long dead guy decided that n = n + 1 doesn't work in his version of math doesn't mean we can't invent a different kind of math where it is allowed. Call it, "bicycle math"


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