Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
11-16-2012, 10:39 PM,
#1
Gear ratio?
Just curious, what do you run for gear ratios/sprockets? Right now I'm running the stock gears on my '12, but I would like to get a little more on the top end, plus I would like to be able to go through the intersection and not be banging gears the whole way. I mean I'm in third by the time I'm across, so I guess I just want to spread my gears out a bit. Any ideas? Experience? Recommendations?

Sent from my Precedent using Tapatalk
Reply
11-16-2012, 11:54 PM, (This post was last modified: 11-17-2012, 12:00 AM by Gibbo.)
#2
RE: Gear ratio?
@kenzies_dad here you go mate have a look at this site hope it helps.

http://virago250street.com/2011/08/17/fi...-1742-etc/

Gibbo

@kenzies_dad I also found this write up about a gear swap out, you might find it useful.



"I own a 2008, yamaha v star 250 that I upgraded with a tachometer and a wind-deflector. I went ahead and changed my front and rear sprockets from 16/45 to 17/38. The change is hard to believe. There is no clutch slippage in 1st gear and great acceleration in all gears including 1st. I had it at 75 mph at 5,900 rpm in 5th gear. If I had done this with the stock sprockets the rpm's calculated would have been 7,500 rpm. I am 5 ft 10. inches and weigh 200 lbs, yet this bike has a lot of torque and acceleration even with the 17/38 change, and best of all riding on the interstate is now very possible. I have just over 500 miles on the bike now, and still in the break in 1000 mile period. So I did not try to max out the speed, but it has a lot of punch and throttle left after 75 mph. I list below the actual road data and theoretical calculations for the benefit of others."

Road Data 16/45 in 5th gear
-
RPM MPH
-----
2,500 25
3,100 30
3,600 35
4,475 45
5,400 55


Road Data 17/38 in 5th gear
-
RPM MPH
-----
3,100 40
3,500 45
3,900 50
4,300 55
4,700 60
5,100 65
5,500 70
5,900 75


Theoretical Data - RPM vs MPH in 5th gear
--
RPM 16/45 17/45 17/44 17/43 17/42 17/41 17/40 17/39 17/38
----
2,400 24 25 26 27 27 28 29 29 30
3,200 32 34 35 35 36 37 38 39 40
4,000 40 42 43 44 45 46 48 49 50
4,800 48 51 52 53 54 56 57 59 60
5,600 56 59 61 62 64 65 67 68 70
6,400 64 68 69 71 73 74 76 78 80
7,200 72 76 78 80 82 84 86 88 90
8,000 80 85 87 89 91 93 95 98 100

Gibbo Cool
Reply
11-17-2012, 02:45 AM,
#3
RE: Gear ratio?
That seems like it would be a good ratio to switch to for your goals.
Reply
06-04-2013, 05:51 PM, (This post was last modified: 06-04-2013, 06:03 PM by HABJR.)
#4
RE: Gear ratio?
(11-16-2012, 11:54 PM)Gibbo Wrote: I am thinking about changing the gear ratio on my new V Star 250. I like the bike but don't like the buzz I get above about 50mph. What do you folks think is the best choice for a change in the gear ratio. My goal lower RPM above 50MPH but not lose the low end torch at least not much. I see on this forum that a change to 17/38 has been done. Are their other options or is this the best option. Thanks for your help. My bike only has 300 miles on it and I am already looking at getting more head room on the bike.

http://virago250street.com/2011/08/17/fi...-1742-etc/

Gibbo

@kenzies_dad I also found this write up about a gear swap out, you might find it useful.



"I own a 2008, yamaha v star 250 that I upgraded with a tachometer and a wind-deflector. I went ahead and changed my front and rear sprockets from 16/45 to 17/38. The change is hard to believe. There is no clutch slippage in 1st gear and great acceleration in all gears including 1st. I had it at 75 mph at 5,900 rpm in 5th gear. If I had done this with the stock sprockets the rpm's calculated would have been 7,500 rpm. I am 5 ft 10. inches and weigh 200 lbs, yet this bike has a lot of torque and acceleration even with the 17/38 change, and best of all riding on the interstate is now very possible. I have just over 500 miles on the bike now, and still in the break in 1000 mile period. So I did not try to max out the speed, but it has a lot of punch and throttle left after 75 mph. I list below the actual road data and theoretical calculations for the benefit of others."

Road Data 16/45 in 5th gear
-
RPM MPH
-----
2,500 25
3,100 30
3,600 35
4,475 45
5,400 55


Road Data 17/38 in 5th gear
-
RPM MPH
-----
3,100 40
3,500 45
3,900 50
4,300 55
4,700 60
5,100 65
5,500 70
5,900 75


Theoretical Data - RPM vs MPH in 5th gear
--
RPM 16/45 17/45 17/44 17/43 17/42 17/41 17/40 17/39 17/38
----
2,400 24 25 26 27 27 28 29 29 30
3,200 32 34 35 35 36 37 38 39 40
4,000 40 42 43 44 45 46 48 49 50
4,800 48 51 52 53 54 56 57 59 60
5,600 56 59 61 62 64 65 67 68 70
6,400 64 68 69 71 73 74 76 78 80
7,200 72 76 78 80 82 84 86 88 90
8,000 80 85 87 89 91 93 95 98 100

Gibbo Cool

(11-16-2012, 11:54 PM)Gibbo Wrote: Not sure my question made it so will ask one more time. I have a new 2013 V Star 250. I like the bike but don't like the buzz I get above 50MPH. I am going to change the gear ratio at my first 600 mile service.Is the 17/38 ratio the best one to change to . I don't want to lose much of my low end Torque. Willing to give up a little to get the RPM down above 55mph. Are there other good options to 17/38 or is that the best one everyone has found? Thanks for your help.
@kenzies_dad here you go mate have a look at this site hope it helps.

http://virago250street.com/2011/08/17/fi...-1742-etc/

Gibbo

@kenzies_dad I also found this write up about a gear swap out, you might find it useful.



"I own a 2008, yamaha v star 250 that I upgraded with a tachometer and a wind-deflector. I went ahead and changed my front and rear sprockets from 16/45 to 17/38. The change is hard to believe. There is no clutch slippage in 1st gear and great acceleration in all gears including 1st. I had it at 75 mph at 5,900 rpm in 5th gear. If I had done this with the stock sprockets the rpm's calculated would have been 7,500 rpm. I am 5 ft 10. inches and weigh 200 lbs, yet this bike has a lot of torque and acceleration even with the 17/38 change, and best of all riding on the interstate is now very possible. I have just over 500 miles on the bike now, and still in the break in 1000 mile period. So I did not try to max out the speed, but it has a lot of punch and throttle left after 75 mph. I list below the actual road data and theoretical calculations for the benefit of others."

Road Data 16/45 in 5th gear
-
RPM MPH
-----
2,500 25
3,100 30
3,600 35
4,475 45
5,400 55


Road Data 17/38 in 5th gear
-
RPM MPH
-----
3,100 40
3,500 45
3,900 50
4,300 55
4,700 60
5,100 65
5,500 70
5,900 75


Theoretical Data - RPM vs MPH in 5th gear
--
RPM 16/45 17/45 17/44 17/43 17/42 17/41 17/40 17/39 17/38
----
2,400 24 25 26 27 27 28 29 29 30
3,200 32 34 35 35 36 37 38 39 40
4,000 40 42 43 44 45 46 48 49 50
4,800 48 51 52 53 54 56 57 59 60
5,600 56 59 61 62 64 65 67 68 70
6,400 64 68 69 71 73 74 76 78 80
7,200 72 76 78 80 82 84 86 88 90
8,000 80 85 87 89 91 93 95 98 100

Gibbo Cool
Reply
06-06-2013, 08:20 PM,
#5
RE: Gear ratio?
After reading a lot of forum information on the results of V Star XV250 Sprocket Upgrades I have ordered through my local mechanic new JT Sprockets for my 2013 V 250. I'm going with a 17/38 combination to replace the stock 16/45 sprockets. I am also replacing the stock chain with an upgrade to EK 520SRX Gold X 120 chain. Should give me longer life and less maintenance over the years. Should get the new parts in next week. Will let everyone know if it makes the difference many owners say this change will make in overall bike performance.
Reply
06-07-2013, 01:27 AM,
#6
RE: Gear ratio?
Way back when I had my Ninja 250, it was factory geared 14, 42. The only thing I did was go up to 15/42 and it made a huge difference. I could've gone down a few teeth on the rear and got even more but I was actually satisfied with it the way it was. I gained about 500 RPM per gear.
Reply
06-07-2013, 10:37 AM,
#7
RE: Gear ratio?
Quick update on my last post i indicated I was changing to 17/38 sprockets after a little more investigation I have decided to back off a little and go with 17/40. Stay tuned. Should have the conversion done by end of next week. I will post what difference this change makes.
Reply
06-14-2013, 06:29 PM,
#8
RE: Gear ratio?
Okay, I had the sprockets changed today from stock to 17/40.Not as thrilled as some folks are about this change. 1st and 2nd gear still happen to soon and not long enough between shifts.. Can't notice much difference from stock sprockets. The bike does smooth out a bit above 50mph. I seem to have an engine not working as hard between 50 and 65mph. I replaced the stock equipment with JT sprockets and a top of the line EK gold chain. Shifting is smooth between third fourth and fifth gear. 5th gear is definitely needed after you hit 45mph. 5th gear is definitely not an over drive gear! Bike still has plenty of low end torque. I don't notice any difference from stock sprockets. Overall I think I will find the change has been worth the dollars spent. The new sprockets and chain should last much longer than stock and I can ride a bit faster without the buzz effect this bike has from 50mph and up in stock mode. Shy
(06-07-2013, 10:37 AM)HABJR Wrote: Quick update on my last post i indicated I was changing to 17/38 sprockets after a little more investigation I have decided to back off a little and go with 17/40. Stay tuned. Should have the conversion done by end of next week. I will post what difference this change makes.
Reply
06-14-2013, 07:17 PM, (This post was last modified: 06-14-2013, 07:22 PM by jmck.)
#9
RE: Gear ratio?
Its been 20 plus years since I've mucked around sprockets

Sent from my GT-I9100T using Tapatalk 4 Beta

to be honest I couldn't even remember which way it went.we will mostly gearing dirt bike down.I'm surprised you couldn't noticed a difference. glad you're happy overall.

Sent from my GT-I9100T using Tapatalk 4 Beta

you could put the stock rear bAck on that might improve it further

Sent from my GT-I9100T using Tapatalk 4 Beta
Jmck
Two wheels moves me body and soul Cool
Reply
06-15-2013, 08:50 PM,
#10
RE: Gear ratio?
One last update on my recent sprocket change. I now have about 100 miles on the bike since making the change to 17/40 sprockets with upgraded chain. Still shift rapidly out of first gear but second definitely has more head room. In heavy city traffic I find myself staying in second gear much longer than with stock sprockets. I have less fatigue after riding above 50mph until about 60. I no longer am getting buzzed to death. In summary the change has made a modest but not dramatic difference in the way the bike handles and feels at both low and high speeds. I probably have about $225 invested in this change. This includes parts and labor. I have no regrets.
(06-14-2013, 07:17 PM)jmck Wrote: Its been 20 plus years since I've mucked around sprockets

Sent from my GT-I9100T using Tapatalk 4 Beta

to be honest I couldn't even remember which way it went.we will mostly gearing dirt bike down.I'm surprised you couldn't noticed a difference. glad you're happy overall.

Sent from my GT-I9100T using Tapatalk 4 Beta

you could put the stock rear bAck on that might improve it further

Sent from my GT-I9100T using Tapatalk 4 Beta
Reply
07-10-2013, 12:32 AM, (This post was last modified: 07-10-2013, 12:55 AM by VRON.)
#11
RE: Gear ratio?
(11-16-2012, 11:54 PM)Gibbo Wrote: @kenzies_dad here you go mate have a look at this site hope it helps.

http://virago250street.com/2011/08/17/fi...-1742-etc/

Gibbo

@kenzies_dad I also found this write up about a gear swap out, you might find it useful.



"I own a 2008, yamaha v star 250 that I upgraded with a tachometer and a wind-deflector. I went ahead and changed my front and rear sprockets from 16/45 to 17/38. The change is hard to believe. There is no clutch slippage in 1st gear and great acceleration in all gears including 1st. I had it at 75 mph at 5,900 rpm in 5th gear. If I had done this with the stock sprockets the rpm's calculated would have been 7,500 rpm. I am 5 ft 10. inches and weigh 200 lbs, yet this bike has a lot of torque and acceleration even with the 17/38 change, and best of all riding on the interstate is now very possible. I have just over 500 miles on the bike now, and still in the break in 1000 mile period. So I did not try to max out the speed, but it has a lot of punch and throttle left after 75 mph. I list below the actual road data and theoretical calculations for the benefit of others."

Road Data 16/45 in 5th gear
-
RPM MPH
-----
2,500 25
3,100 30
3,600 35
4,475 45
5,400 55


Road Data 17/38 in 5th gear
-
RPM MPH
-----
3,100 40
3,500 45
3,900 50
4,300 55
4,700 60
5,100 65
5,500 70
5,900 75


Theoretical Data - RPM vs MPH in 5th gear
--
RPM 16/45 17/45 17/44 17/43 17/42 17/41 17/40 17/39 17/38
----
2,400 24 25 26 27 27 28 29 29 30
3,200 32 34 35 35 36 37 38 39 40
4,000 40 42 43 44 45 46 48 49 50
4,800 48 51 52 53 54 56 57 59 60
5,600 56 59 61 62 64 65 67 68 70
6,400 64 68 69 71 73 74 76 78 80
7,200 72 76 78 80 82 84 86 88 90
8,000 80 85 87 89 91 93 95 98 100

Gibbo Cool
After reading this thread, I decided I wanted to lower my rpms at least at highway speed.
The shop was looking at a gear swap like this 15T front ($18.95), 42T($36.95) rear, new chain ($68.95) all installed for $135.15.
Now can beat the sprocket price at Bike Bandit (call or email to make sure of the part number) and I know nothing about chains.

Only the rear was even close to what is being talked about here.
So, I am getting confused for sure.

I found this on Bikebandit about sprockets for the V Star 250 and I am posting it as an attachment.
[attachment=536]

Now all I need to do is decide which swap is best for me.

I am concerned about super slow starts that eat up the clutch.
But want much lower rpms on the engine at highway speeds.
The land here is flat with no hills.
I weigh 145 lbs.

So I wonder about the mid range swap.

Any suggestions ?

thanks
Bike : 2009 V Star 250
You can put a bowling ball in an oven, but that don't make it a biscuit.
Reply
07-19-2013, 08:36 PM,
#12
RE: Gear ratio?
(06-14-2013, 06:29 PM)HABJR Wrote: Okay, I had the sprockets changed today from stock to 17/40.Not as thrilled as some folks are about this change. 1st and 2nd gear still happen to soon and not long enough between shifts.. Can't notice much difference from stock sprockets. The bike does smooth out a bit above 50mph. I seem to have an engine not working as hard between 50 and 65mph. I replaced the stock equipment with JT sprockets and a top of the line EK gold chain. Shifting is smooth between third fourth and fifth gear. 5th gear is definitely needed after you hit 45mph. 5th gear is definitely not an over drive gear! Bike still has plenty of low end torque. I don't notice any difference from stock sprockets. Overall I think I will find the change has been worth the dollars spent. The new sprockets and chain should last much longer than stock and I can ride a bit faster without the buzz effect this bike has from 50mph and up in stock mode. Shy
(06-07-2013, 10:37 AM)HABJR Wrote: Quick update on my last post i indicated I was changing to 17/38 sprockets after a little more investigation I have decided to back off a little and go with 17/40. Stay tuned. Should have the conversion done by end of next week. I will post what difference this change makes.
Do you wish you had stuck with the 17/38 in stead of going with the 17/40 ?
And what kind of increase of mileage did you find the change made?
Thanks,
Ronnie
Bike : 2009 V Star 250
You can put a bowling ball in an oven, but that don't make it a biscuit.
Reply
08-07-2013, 12:09 PM,
#13
RE: Gear ratio?
(11-16-2012, 10:39 PM)kenzies_dad Wrote: Just curious, what do you run for gear ratios/sprockets? Right now I'm running the stock gears on my '12, but I would like to get a little more on the top end, plus I would like to be able to go through the intersection and not be banging gears the whole way. I mean I'm in third by the time I'm across, so I guess I just want to spread my gears out a bit. Any ideas? Experience? Recommendations?

Sent from my Precedent using Tapatalk
Just yesterday I got my bike's sprockets changed from stock to 17/38.

The change is amazing and the ride-ability of the bike is much better.

The shifting is still smooth and the acceleration is still good even from 1st.

It does appear to " stretch " out the gears to a comfortable level.
It rides and shifts more like a much bigger bike for sure.

On the ride home I did not even feel the need to shift into 5th while doing the 45 mph speed limit.
I did any way and the rpm was nice and smooth and low....if I needed to accelerate I just down shifted and the response is very good.
I have yet to go out on the expressway but I have to believe from the ride home and around town the experience will still be a very positive one.

In my opinion it's the best mod I have ever made. (price of sprockets, new chain, labor).

Ride safe.
Bike : 2009 V Star 250
You can put a bowling ball in an oven, but that don't make it a biscuit.
Reply
09-23-2013, 09:03 PM,
#14
RE: Gear ratio? 4 month update on gear change
I changed gears from stock to 17/40 back in early June 2013. I live in hilly NC. 17/38 would have given me trouble going up some of our hills. Even my 17/40 change although I have a much better ride at 55mph. I lose some power going up hills. I can feel the difference from stock.Not much but it's there. I have not felt the need to down shift into fourth yet but might on an upcoming day trip to the Blue Ridge Parkway. The change makes the bike a keeper!! I really like the light weight and the great easy handling of my 2013 250. I have not gotten uncomfortable on hour rides. Much longer rides I know I will have to stop and stretch my back and legs. Have over 1,000 miles on the 250. Just had the valves adjusted. they found the exhaust valves to be to tight everything on the money now. Finally go 17/38 if you live in Florida or some other location with few hills. Any hills? Go with 17/40. You will still have the needed power and torque to get up those hills and still have a much smoother and faster top end.
Reply
05-30-2015, 03:03 PM,
#15
RE: Gear ratio?
Is there a reason you can not just go with an 18 tooth front sprocket and not change the rear one? Seems it would effect the speed similarly.
Reply
Possibly Related Threads...
Thread Author Replies Views Last Post
  shift gear adjust Yankee Bastid 0 210 02-07-2017, 03:13 PM
Last Post: Yankee Bastid

Users browsing this thread:
1 Guest(s)