Does ONE TOOTH REALLY MATTER? - Gearing EXPLAINED

Im adding another point... im struggling on my TC250 with extremely stiff front end and soft rear end... I theorize on adding two teeth at the rear sprocket so my wheel base drops, and my power increases... helping absorb the load under hard impacts translating it into forward motion rather than down motion (My back is fckn killing me!) plus, third gear is a little laggy and second gear is not as aggressive as it can be... Gonna help with that regard, bike is in theory gonna be more of a hand full but its well balanced so id rather sacrifice the power output to better that torque

Hey y’all I am trying to find out what I should change to make my bike have more torque I have a 14 tooth front and a 42 rear

Stone cold Austin

Had a 1986 GSXR 1100. put a bigger sprocket on the rear from sprocket specialist. had wheelie bars, Electric shifter, Mikuni 36mm carbs & Vance & Hines exhaust without the baffle. 9.80 quarter mile @ 146 mph. the lager rear sprocket was the key in the quarter mile.

Backwards

Bro should go see a doctor, he's got tumors in his arms.

Thanks for the video, informative & interesting

OMG BRO! Why are you spreading bad math!?!

Speaking of “gear” , are u natty or naw? Your bicep is the size of my dome piece .

Those biceps are absurd bro.
The ratio of forearm to bicep is .26

So i went from a 14/41 to a 14/43 i changed the chain and sprocket out becuase the old ones looked worn and my chain kept loosing tension. I habe a 2018 ninja 400. Now with the 43 tooth in thebtear i get overrev around 6k in every gear so is the sprocket my problem or not because ive already bought a new clutch

ive grinded 4 sprocket tooths off with my angle grinder and the bikes not faster wtf?

What happens to your speedometer reading if you change sprockets?

can u post some biceps exercises?

Not much difference to go 1 tooth on the back sprocket. Big difference 1 tooth on the front sprocket

Especially in the front

Geez boi put them guns away my wife is on here 😂

Do not throw your money away changing the sockets. This will only make 2 results:

1. this will improve starting off (launching)
2. this will increase your RPM in top gear at highway speeds.

Changing the sprockets is changing the final gearing on your cycle. Changing the final gearing means nothing. What really matters is overall gearing. Overall gearing is everything from the engine to the rear tire.
Overall gearing is a affected by these areas:
1. Manual Transmission
2. Drive sprockets (final gearing)
3. Tire size (actually have to change rim diameter to change tire size much)

It is a very common misunderstanding that changing the sprockets will mean you'll always have lower gearing. That is not true. You have a manual transmission. That allows you to have what ever gear ratio you want. If you like the power of low gearing then don't shift until redline for all I care. Shifting at redline is not what you really want unless you are drag racing. My point is you can decide how high you want your RPM to go before shifting.

If you like low RPM for fuel efficiency shift early and keep your RPMs low.

Once you get in top gear you can't shift up any more. That's why I say changing the sprockets will affect the RPM on the highway.

Hi so I have an 07 Kawasaki Vulcan vn900 classic and want to put a aftermarket rim 240 40-18 with a custom pulley. The OEM pulleys. Is 34 front and 62 rear how much teeth can I drop on the rear and still function without messing with the front? If that makes any sense 🙏🏼

Careful with terminology here, quite confusing for many people. When he says "faster" he means top speed, but it may accelerate slower which would be called "slower" in another area. Really need to use better terminology. Talk about top speed and acceleration, not "faster" or "slower".

Hes a weight lifter not a mathematician 😅😅

If you do the division the other way the numbers come up with your actual ratio. for example 15 front 45 rear. 45/15=3, therefore 3:1 ratio. This means 3 revolutions of the primary sprocket to 1 of the rear. Just my 2 cents and is easier to visualize.

vid is 2 years old but damn you explained it perfectly

Horrible video, full of errors.

It dose not increase power to the rear wheel or torque.
It increases engine rpm and therefore you're running in more of the more power band or and more torque from the engine because the rpms are up higher to start with. You should leave your front sprocket alone because it can add stress to the bearing.
Going up a tooth or 2 for street and up to 8 for dirt. If you're racing i'm just not even going to talk about it.
It more complex on many different subjects for racing.

Dude thx for the info I don’t care if u fucked up the math or terminology what I really wanted to know was real your life experience with going from 51 to 50 on CRF rear for all the same reasons you did. 👍🏼

What? Its correct that increasing front tooth or decreasing rear tooth reduces top speed and makes more torque. But u got the ratios all wrong.

I reduced 4 teeth on the rear sproket once..

I just dropped 9 teeth on my rear

This is apropos of nothing, others have made good comments, but should you gear your race bike to redline in top gear at the braking point of the longest straight?? Discuss

Hello I need Help , I just Buy a Honda crf 300 l ,Just transform Supermotord with original sprocket 14 -40 ...I need more speed ...which will be better change

Great Video thanks.

I haven't watched the whole video yet but I had a 400 it was during the Gap years before they discontinued the big rebels. And I went from a 5 and 3/4 rear sprocket to a 4-inch rear sprocket completely forgetting about the circumference of circles and I went from doing 80 mph top speed to about 140 I'll leave it to you to look up pie and all that stuff and do the math but it's a real thing that works and I didn't lose any of my acceleration which is what really astounded me I actually accelerated faster

My new E Ride Pro SS 2.0 E Moto e bike has a 19 inch rear wheel and 55 tooth sprocket stock. I'm going to a 16 inch rear wheel and 60 tooth sprocket and Warp 9 is building the wheel for me. Now I'm "re thinking it" and hoping that's not to "RADICAL" of a change, going lower diameter tire size plus 5 tooth larger sprocket! I'm not worried so much in losing top end speed as I mainly just trail ride and hills, hills and technical stuff. Any thoughts or opinions would be most welcome! Thanks for the advice and great Video! : )

If I have a toque figure from a dyno run with stock gearing and it's say 90 foot pounds if I gear the bike down say -1 on the front and +1 on the rear. Will the torque figure change on the dyno? I know the outright hp figure won't but I'm unsurs about the torque.

very informative thank you.

I put a -1 front sprocket on the 2002 CBR954RR I used to have. That made a noticeable difference; as if the front end on that bike wasn't easy enough to raise up off the ground before....

So, as a general rule, adding 1 tooth to the front is equal to dropping how many teeth on the rear?

i think it should be said that the torque increases and not the power! good video besides that!

Great explanation for a beginner to understand

After watching this video, I have come to a conclusion that you yourself are not clear about the concept properly.

Yes

Your gear ratio calculations are incorrect / not interpreted in such way,
it's driven gear divided by drive gear. 13-50 combo (50 divided by 13) results in a 3.84:1 final drive ratio.
Check the factory specs of any bike's transmission ratios or even it's primary drive, same principal.

I'm currently changing my chain and sprockets I have changed to a 42 on the rear this time instead of 41 do I need to add a extra link in chain or keep the same as it and just adjust the wheel

4:1 ratio… it’s just that easy….

Damn! his biceps are bigger than my bike sprocket😂

Jerk out of your arms? Look at your arms dude!

Just ride your bike and stop fucking with it , gearing is not going to make you faster as a rider

Basically, the rear ( 50 tooth) 1 tooth is about 2%. One on the front ( 13 tooth) is about 8%