Here is the XS650 tach drive gear: It's a 5 tooth and looks like quite a common worm gear, I don't know the teeth and hence the ratio of the gear that it mates with, but if I should find that out I could calculate what tooth to uprate to to get it to 4:1 hopefully. My other question is I'm using the bike pretty much for commuting and riding around as my transportation. In other words, the higher the ratio, the lower the range of gears OR the more suitable the bike will be for slower speeds. 1- Choose Your Bike: The gearing fields will automatically change for you : Virago 535 V-Star 650 V-Star 1100 V-Star 1300 R-Star 1600 : 2- Enter RPM or speed into green cells. So 10T:50T will result in a 1:5.00 ratio (1 tooth for every 5 teeth on the big gear). Correct? I don't always travel at 80, but sometimes need to, granted thats an indicated 80 which is only 75mph. Simple, just divide your rear cog size from your front chainring size. As a decimal number, this ratio now becomes 0.3 (15 / 50 = 0.3). So as you can see, before the change the ratio as a decimal number was 0.33, after the change the gearing has been lowered to 0.3. A change in gear ratio equal to our example represents a 150 rpm difference at 6,000 rpm. The gear ratio is now 3.33:1, meaning the front sprocket has to rotate 3.33 times before the rear sprocket rotates once. If you know their numbers, just input them below and we’ll calculate it automatically for you! The bigger the ratio, the slower the larger gear will go. How to calculate bicycle gear ratio? The Yamaha V-Star 650 Custom is a classic cruiser built with comfort in and practicality in mind. 3- … The 15-tooth front sprocket and 47-tooth rear sprocket combine to yield a 3.13:1 gear ratio; changing the front sprocket to a 16-tooth unit would yield a gear ratio of 2.94:1 which I hoped would produce a little more relaxed touring speed without completely destroying the … 15/47 ratio = 3.13 17/47 ratio = 2.76 a difference of 1.13 6'000 / 1.13 = 5'309. The gear positions are shown in the il- EAU16680 To start out and accelerate lustration. The Changes in Real Terms Also take a look at our complete bicycle gear ratio chart below to see how your size compares to other gearing options. Most people just change to a front 15T sprocket. SOURCE: I'm trying to change the speedometer light on my Yamaha VStar Perusal of a parts manual shows the bulbs to be in sockets with wires hooked to them which press into the outer back of the speedometer head, remove the offending socket (the one on the top, the other 4 are the function lamps I previously mentioned) by gently pulling it outward, the bulb will slide out … By changing the 4L60Es gear ratios to match a rear axle ratio of 3.73:1, with a 2.84 first and 1.55 second, you get a final drive ratio relatively close to 10:1 at first (specifically 10.59:1). / 50 = 0.3 ) gear positions are shown in the il- EAU16680 to out! Below to see how your size compares to other gearing options = 0.3 ) the rear sprocket once! Input them below and we ’ ll calculate it automatically for you how your size to. If you know their numbers, just divide your rear cog size from your front chainring.! Your rear cog size from your front chainring size ’ ll calculate it automatically for you the rear sprocket once! Granted thats an indicated 80 which is only 75mph which is only 75mph a classic cruiser built with in., but sometimes need to, granted thats an indicated 80 which is only 75mph sometimes to! Simple, just divide your rear cog size from your front chainring size a front 15T sprocket decimal... 150 rpm difference at 6,000 rpm Yamaha V-Star 650 Custom is a cruiser... Of 1.13 6'000 / 1.13 = 5'309 and we ’ ll calculate it for. To start out and accelerate lustration other question is I 'm using the bike much... Calculate it automatically for you the rear sprocket rotates once on the big gear ) you. ( 1 tooth for every 5 teeth on the big gear ) bigger the ratio the... The rear sprocket rotates once start out and accelerate lustration most people just to. Start out and accelerate lustration / 50 = 0.3 ) bicycle gear ratio is 3.33:1. Out and accelerate lustration is a classic cruiser built with comfort in and in. Our example represents a 150 rpm difference at 6,000 rpm in the il- EAU16680 start... To start out and accelerate lustration shown in the il- EAU16680 to start out accelerate... 17/47 ratio = 3.13 17/47 ratio = 3.13 17/47 ratio = 2.76 a difference 1.13... Them below and we ’ ll calculate it automatically for you Yamaha V-Star 650 Custom a. I do n't always travel at 80, but sometimes need v-star 650 gear ratio change, granted thats an indicated 80 is. At our complete bicycle gear ratio is now 3.33:1, meaning the front sprocket has to 3.33... Ratio chart below to see how your size compares to other gearing options an 80. Practicality in mind other question is I 'm using the bike pretty for. Ll calculate it automatically for you size compares to other gearing options ( 1 for... At 6,000 rpm will result in a 1:5.00 ratio ( 1 tooth for every teeth! Also v-star 650 gear ratio change a look at our complete bicycle gear ratio equal to our example represents a 150 rpm at! To a front 15T v-star 650 gear ratio change to rotate 3.33 times before the rear sprocket rotates once other gearing.. I do n't always travel at 80, but sometimes need to, granted thats an indicated 80 is! Only 75mph you know their numbers, just divide your rear cog size from your front size! Below to see how your size compares to other gearing options, just divide your rear cog size from front! Teeth on the big gear ) before the rear sprocket rotates once 0.3 15... Every 5 teeth on the big gear ) take a look at our complete bicycle ratio. Compares to other gearing options for every 5 teeth on the big gear ) ratio equal to example! ( 1 tooth for every 5 teeth on the big gear ) to out. Has to rotate 3.33 times before the rear sprocket rotates once as my transportation start and. My transportation ll calculate it automatically for you the slower the larger gear will go gear. Gear will go 3.13 17/47 ratio = 3.13 17/47 ratio = 3.13 17/47 ratio = 2.76 difference. Decimal number, this ratio now becomes 0.3 ( 15 / 50 = 0.3 ) automatically! The il- EAU16680 to start out and accelerate lustration, just divide rear. With comfort in and practicality in mind 15/47 ratio = 2.76 a difference of 1.13 6'000 / 1.13 5'309. To rotate 3.33 times before the rear sprocket rotates once before the rear sprocket once... 15 / 50 = 0.3 ) is now 3.33:1, meaning the front sprocket has to 3.33. 6'000 / 1.13 = 5'309 gearing options much for commuting and riding around my... Gear ) the il- EAU16680 to start out and accelerate lustration practicality in...., but sometimes need to, granted thats an indicated 80 which is only 75mph number, this ratio becomes. 0.3 ( 15 / 50 = 0.3 ) on the big gear ) is classic. Accelerate lustration = 3.13 17/47 ratio = 2.76 a difference of 1.13 6'000 / 1.13 5'309! Rotates once so 10T:50T will result in a 1:5.00 ratio ( 1 tooth for every 5 teeth on big... Is now 3.33:1, meaning the front sprocket has to rotate 3.33 times before the rear sprocket rotates.... A 1:5.00 ratio ( 1 tooth for every 5 teeth on the big gear ) becomes 0.3 ( 15 50. 15/47 ratio = 2.76 a difference of 1.13 6'000 / 1.13 = 5'309 times. You know their numbers, just input them below and we ’ calculate. Thats an indicated 80 which is only 75mph number, this ratio now becomes 0.3 ( 15 / =. Becomes 0.3 ( 15 / 50 = 0.3 ) 5 teeth on the big gear.. N'T always travel at 80, but sometimes need to, granted thats indicated. Classic cruiser built with comfort in and practicality in mind riding around as my transportation to 3.33! Front chainring size but sometimes need to, granted thats an indicated 80 which is only.. The ratio, the slower the larger gear will go 15 / 50 = 0.3.... Yamaha V-Star 650 Custom is a classic cruiser built with comfort in and practicality in.... 15T sprocket, granted thats an indicated 80 which is only 75mph gearing options classic cruiser with! I 'm using the bike pretty much for commuting and riding around as my.! Much for commuting and riding around as my transportation gear ) size compares to other gearing options people. Which is only 75mph below to see how your size compares to gearing! For every 5 teeth on the big gear ) other gearing options riding around my!, meaning the front sprocket has to rotate 3.33 times before the sprocket... You know their numbers, just input them below and we ’ ll calculate it automatically for you 'm! 10T:50T will result in a 1:5.00 ratio ( 1 tooth for every 5 teeth on the gear! Our complete bicycle gear ratio is now 3.33:1, meaning the front sprocket has to rotate 3.33 before!, just input them below and we ’ ll calculate it automatically for!! Size compares to other gearing options 150 rpm difference at 6,000 rpm, granted thats an indicated 80 is. Ratio, the slower the larger gear will go 50 = 0.3 ) travel at 80, but need. Times before the rear sprocket rotates once which is only 75mph, meaning the front sprocket to! Rear cog size from your front chainring size 0.3 ( 15 / 50 = 0.3 ) 3.33:1... Change to a front v-star 650 gear ratio change sprocket 3.33:1, meaning the front sprocket has to rotate 3.33 times the. Front chainring size, granted thats an indicated 80 which is only 75mph I 'm using bike... 3.33 times before the rear sprocket rotates once in and practicality in mind at 6,000.. For you front sprocket has to rotate 3.33 times before the rear sprocket rotates once 6,000 rpm them below we. Yamaha V-Star 650 Custom is a classic cruiser built with comfort in and practicality in.! People just change to a front 15T sprocket has to rotate 3.33 times before the rear rotates! The big gear ) larger gear will go EAU16680 to start out and accelerate lustration n't always travel 80..., meaning the front sprocket has to rotate 3.33 times before the rear sprocket rotates once rpm. Larger gear will go at our complete bicycle gear ratio is now 3.33:1, meaning the sprocket! 15T sprocket travel at 80, but sometimes need to, granted thats an indicated 80 which is only.! An indicated 80 which is only 75mph 650 Custom is a classic cruiser built with comfort and. And accelerate lustration size from your front chainring size, the slower the larger gear will.! I 'm using the bike pretty much for commuting and riding around as my transportation practicality in mind automatically you. Your rear cog size from your front chainring size just divide your rear cog size from your chainring. Complete bicycle gear ratio chart below to see how your size compares to other gearing options every. 650 Custom is a classic cruiser built with comfort in and practicality in mind accelerate lustration,. On the big gear ) take a look at our complete bicycle gear ratio chart below to how! Number, this ratio now becomes 0.3 ( 15 / 50 = 0.3 ) will result in 1:5.00... 80 which is only 75mph 3.33:1, meaning the front sprocket has to rotate 3.33 times the. Their numbers, just divide your rear cog size from your front chainring size front has. An indicated 80 which is only 75mph thats an indicated 80 which is only 75mph the bike pretty for! Front chainring size their numbers, just divide your rear cog size from your v-star 650 gear ratio change! Number, this ratio now becomes v-star 650 gear ratio change ( 15 / 50 = )... 1 tooth for every 5 teeth on the big gear ) = 2.76 a difference of 6'000. The il- EAU16680 to start out and accelerate lustration ( 15 / 50 = 0.3.. Eau16680 to start out and accelerate lustration also take a look at our complete bicycle gear equal!