Chains and Sprockets

Easy to use. btw dev should include formula for calculate RIM/TYRE SIZE and RIDER WEIGHT (if possible because weight obviously effect speed & torque) - e.g data below: front 15t, rear 36t rim size 17, tyre 60/80 rear. rider weight 80kg what is the calculation of ratio, speed and torque for above data.

This is a great quick app that does exactly what it states it is going to do no fancy mumbo jumbo just straight to the result with a few easily entered options.

Very good app. But should had 428H chain size mentioned there which is not there. I hope you will add this.

works great only complaint is no mph only kph.. not a big deal since you can still see what speed changes are roughly happening, simply a slight annoyance is all.

BEST... simple explanation for44 motorcycles, trq/low-end, city, offroad.scrambler, vs. hp/top end.. hi way, road race cafe-street fo5r basic motorcycle sprockets.

This app is great if anyone wants to change his bike chain and sparoket well, then use this app.

Totally invaluable I don't know what I'd do without the only thing I think is they should inform you if you have say this size crank what should be the the size of the sprocket to match

could not enter low secondary sockets for ratios that are real close.

look like a small matter but it can make a huge changes on outputs.

very useful app using it for a year absolutely no complaints 👍

Great no messing about app

Wish to have a rim size changed added to next update.we changed sprocket and try different combination to satisfied our adrenalin.i think we need to add a rim sze too.becaused if we changed the rim size i think the ratio,speed and torque will not be accurate.keep it up.

Nice app, works for what it's for. Only gave 4 stars, becasue, it inly goes as low as a 12T sprocket :( i need an app that will go to a minimum of at least 9T

Why is there no 10T sprocket ratios?