Hi guys,
There are two famous Cycling Calculators:
https://www.gear-calculator.com/
https://www.gribble.org/cycling/power_v_speed.html
One this great for selecting for exploring your gear options.
The other is a fantastic resource to figure out the power requirements to overcome the climbs
I decided to merge both ideas – to select the gears and calculate the power in one place.
I hope this helps you all to figure out the ideal chainring for the next adventure.
This allows you to select:
Climb Gradient, Extra load in the bike and much more!
It's still early project – I spend a few hours to cobble it together.
I really appreciate your feedback and ideas!
Thanks!
by Slight-Round-3894
6 Comments
URL to the calculator: [https://gearftp.lvido.tech/](https://gearftp.lvido.tech/)
As a Dev I know a Bootstrap Page when I see one.
But looks neat. I like the Sankey
Seems to require so many assumptions/ unknowables ( drag, resistance, losses) from the user which surely leads to meaningless results.
The simple fact is that for 99% of bikepackers the fitting the lowest possible gearing you can is the answer ( ideally below 20 gear inches) and Sheldon Brown’s gear calculator already exists.
Some food for thought:
* How many potential users will know how to convert number of Watts (@ given pressure) from BRR and similar sites to CRR value?
* Don’t extra variables unnecessarily overcomplicate the calculator? Mayb consider hiding them under some ‘advanced’ tab. On most common climb grades bikepackers may ride (+- 8-12 %), you can approximate that all resistances together add about 10% energy cost to the climb itself (what seems to match more or less my recorded gpxes with longer, mellow /roads, flowy singletracks with no tech/ climbs and average ~130W power)
* Lack of common presets to let the user not to think about the exact outer diameter of the wheel. Maybe unit conversion for those who do not use SI for strange reasons.
* Sliders with no text boxes! SHAME!
* To make it all-in-one drivetrain spellbook consider adding a separate tab with gearing visualiser AND an option to visually compare 2 configurations. There’s nice and old calculator that let’s you plot the gearing: [https://mike-sherman.github.io/shift/](https://mike-sherman.github.io/shift/), but it doesn’t let you easilly compare 2 drivetrains (especially 2x).
Looks great!
can you please add downhill gradient as well and a slider for gradient?
Should be a life add on on bike computers when it calculates on the fly and tells you which gear to use