will more teeth actually help.

If someone who has done this reads this thread, Has adding teeth to the rear sproket or removing from the front does it actually improve your gas mileage?

if so how much?

What does it do to the power of your bike?

How does each effect the outcome, rear or front changes?

Thanks for sharing your experience.

 

go buy a stunt sprocket for the rear and expect 200 miles per gallon!

GUYS, IM SO CONFUSED!!!

I am sortve a fly beneath the radar guy on this site.....i love the tech advice, been checking in a lot lately because of the flaming of Go For A Ride.

because....its funny.
so i am not sure how to reply....
I always dropped one tooth in the front on my cruiser bikes for more torque, i went with a stock sprocket in the front and added 2 in the rear on my vfr and wound up going back to stock gearing after about 4k miles. it wheelied great, and launched hard, but ran about 6k at 70mph. killed gas milage, speedo is off, and kindve annoying. stock is about perfect realy.
rule of thumb-drop a tooth in the front is equal to adding 4 in the rear.
if your going to change it go up 2 in the back.

 

Give him an answer .. He is probably asking for real.
The issue is he can easily find out more information and really understand it if he researched all these Items himself.
There are a lot of questions there. You can use any two and have a subject for a book on bike gearing.

 

I'll answer the easy one - adding teeth to the rear or deleting teeth from the countershaft sprocket do NOT improve gas mileage. Your engine will turn higher RPMs at any given speed in any gear.

 

ya, i was thinkin the other way around. but anyway, how much of an effect doses it have? is it worh doing.

iv never done it so i dotn know what effect it can actually have.

 

SQUIRRELS have 22 teeth and do just fine, love corn.....but they won't eat asparagus !!

 

Google information written by any moron who may or may not know what a motorcycle even is, or ask people here inwhich i have some level of trust that they know what they are talking about.

Ok, now even I am starting to get irritated.

(not speaking to any paticular person) If you dont care to answer my questions just keep your mouth shut

 

Some will say more teeth is better.

 

so scew it. ill google it, if i get bad advice and screw up my engine im sure you will be happy that im not bothering you.

 

On my 6th Gen, I went +2 on the rear. Gas mileage is about 44 mpg - just about all of my daily commute is on the highway. I installed a SpeedoHealer so you can accomodate for the error in the speedometer. If you plan to do any gearing change, I would highly recommend it. When it comes time to replace the chain, I think I will try -1 on the front. In my opinion, the bike is geared way too high in stock form.

 

Thank you very much.

what was your mileage before?

 

Think about your bicycle. Small ring in front, large cog in the rear. Good for climbing but you'll spin out if you try to ride fast on the flat.

I went down one tooth on the countershaft sprocket on my 1984 VF750F. Now i have a big, heavy sportbike that accelerates a little - little! - bit better.

I use my 2004 primarily for sport-touring. I like the stock gearing for that. What do you use your bike for primarily?

 

Sounds like you're having a rough night so let me see if I can help, and I believe you're serious, so don't burn me for this.

I am not sure what gen you ride but in terms of a 6 gens gear ratio and abundance of power at the top of the tach, it's worth doing. I ride minus 1 in the front which is actually closer to going up 2.8 teeth in the rear, apologies to the gent who said it was like going up four. It won't do anything for miles per gallon and it will throw your speedo and mileage off buy roughly 12% to the high side. So indicated 60mph is more like 53 actuall mph. Those effects would be lessened if you where to go +2 rear rather than -1 front. All of those numbers can be corrected with a $100 speedo healer.

This mod does not add anything in terms of HP or torque, it simply moves some top end torque closer to the low-mid area on the tach. Basically giving the bike faster 0-120mph times and more drive on corner exiting at lower RPM. It will cost the bike some top-speed, which also will vary depending on how many teeth you change.

If your riding a track that doesn't require great top-speed or you're a wheelie aficianado than you can do both -1f and +2 or even 3 rear. That should just about pack every ounce of power and torque your bike has into a window of 5,000 rpm. Say 2,000 to 7,000 on the tach.

 

I ride mostly sport touring. For work on the highway all day.

The idea is to save money. I have to buy new sprockets in the spring anyway.

Just to clarify, I do understand the concept, more teeth on the back, the rear wheel spins more rotations.

my question is in how much of an effect it has.

if i go down 1 on the front and up 3 on the back how will it effect my bike?

I do wheelies, but not all of the time. I dont want to do that, i also like taking off very quick depending on where im at. I also want to do a few track days next year. i can give up top speed. the fun is in corners at lower speeds.

 

More teeth is better. You'll probably only get about 10 mpgs more initially, then it could go up by more than 25 mpgs. It all depends on if you boil the sprockets before installing them. This helps in the curing process and produces more velocity as the sprocket travels in a concentric path. It's a worthy investment. I'm getting about 62 mpgs since I changed my sprocket to +4 in the rear.

 

can you explain the boiling of the sprokets thign a little more. seems a little strange to me.


62mpg huh.

theoretically, what is the max i can do. +x on the rear -x on the front.

 

Boiling the metal makes it tougher and resists wear better. It also allows it to cut down on mass due to the oxidation process. It takes about 20-30 minutes on a rear sprocket.

The max you can go up on the rear is 12. You can go down 8 teeth on the front. If you do both of these adjustments you'll probably increase your mpgs by 25-35 percent.

 

that because it makes their pee smell funny

 

wouldn't it take more heat than boiling water to harden the metal, which is basically what you are doing. woudlent a torch accomplish this better?

dennis kirk doesent even sell anythingn accept the oem number of teeth.

 

Dude, listen to me. Just stick with the stock gearing for now. Save some $$$, OK?