diff --git a/README.md b/README.md
index 7ec69fe..d0294b6 100644
--- a/README.md
+++ b/README.md
@@ -19,11 +19,17 @@ It's like a universal language for comparing gearing, all reduced to a single nu
The formula is km/h = ((wheel diameter(mm) + tyre diameter(mm)) × π) × ratio × cadence × 60 / 100,000
* **Derailleur capacity:** This will tell you what capacity derailleur you should be looking for based upon your crank & cassette.
The formula to calculate it is (largest sprocket - smallest sprocket) + (largest chainring - smallest chainring)
+* **Ratio list:** Underneath the results table you will see a list of all of the gear combination ratios in order, with any that are close to each other highlighted.
## Changelog
**2021-06-29**
- - Removes JQuery & JQuery Mobile styling & Javascript
- - All javascript is now vanilla, some ES6
+ - rel="noreferrer" added to external links
+ - Javascript links moved to bottom of ``
+ - Updates README.md
+
+**2021-06-29**
+ - Removes JQuery & JQuery Mobile styling
+ - All javascript is now vanilla, some ES6, rewritten to improve efficiency
- Adds ordering option to the results, ordering by gear ratio ascending or descending
- Adds a list showing gear ratios in linear order and highlights those that are close together
diff --git a/index.html b/index.html
index a105eee..37a6d12 100644
--- a/index.html
+++ b/index.html
@@ -18,32 +18,30 @@
Gear ratio calculator
-
-
-
+
There are several presets saved with common gear configurations which can be useful for a quick starting point.
Ratio: Gear Ratio describes the rotations of the output gear in relation to rotations from the input gear. A ratio of 3:1 would mean that the wheel would rotate 3 times for each rotation of the chainring.
-
MD: Metres of Development (wiki) describes the distance the bike
- will travel for each full pedal revolution. The formula is (wheel diameter + tyre diameter) × π × gear ratio
-
GI: Gear Inches (wiki) also known as Effective Diameter, describes gear ratios in terms of the diameter
- of an equivalent directly driven wheel if the pedals were fixed to that wheel (like a Penny Farthing). The formula to calculate it is (wheel + tyre diameter in inches) × (chainring toothcount ÷ sprocket toothcount)
+
MD: Metres of Development (wiki) describes the
+ distance the bike will travel for each full pedal revolution. The formula is (wheel diameter + tyre diameter) × π × gear ratio
+
GI: Gear Inches (wiki) also known as Effective Diameter, describes gear ratios in terms
+ of the diameter of an equivalent directly driven wheel if the pedals were fixed to that wheel (like a Penny Farthing). The formula to calculate it is (wheel + tyre diameter in inches) × (chainring toothcount ÷ sprocket toothcount)
-
GR: Gain Ratio is a Sheldon Brown innovation. Traditional measurements (GI, MD etc.) don't allow for the dis/advantage of pedal arm (crank)
- length and also make easy comparison of different gearing tricky (46/16 is the same as 53/19 - if the crank lengths are the same) so Sheldon Brown proposed a gear measurement system called "gain ratio". It describes the ratio of distance travelled by the bike relative to the radial distance moved of the pedals. His formula is ((wheel + tyre radius) ÷ crank length) × gear ratio.
- The benefits of this include:
+
GR: Gain Ratio is a Sheldon Brown innovation. Traditional measurements (GI, MD etc.) don't allow for the dis/advantage of
+ pedal arm (crank) length and also make easy comparison of different gearing tricky (46/16 is the same as 53/19 - if the crank lengths are the same) so Sheldon Brown proposed a gear measurement system called "gain ratio". It describes the ratio of distance travelled by the bike relative to the radial distance moved of the pedals. His formula is
+ ((wheel + tyre radius) ÷ crank length) × gear ratio. The benefits of this include:
Given 2 identically geared/wheeled bikes you can see a numerical representation of the mechanical dis/advantage if they have different crank lengths.
-
It's dimensionless, so whether you supply the measurements in inches, mm or microns the resulting value is the same.
+
It's dimensionless, so whether you supply the measurements in inches, mm or microns the resulting value is the same.
It's like a universal language for comparing gearing, all reduced to a single number!