2001 gen 1 fazer 1000 sprocket swop

[Robgosty]

As title, looking at going -1 on front or +2 on rear for better low down and mid range acceleration, know it will knock a bit off top end but can live with that, has anyone done +2 on rear and what was effect, other thing is with +2 on back will standard chain be long enough ?

[Megawatt]

Should be fine, unless it's a brand new chain. Acceleration will be awesome,  but mpg will suffer.Also speedo won't be accurate. It's all worth it though.

[Millietant]

Are you sure you need to do this ? Unless there's a problem with the EXUP valve then your bike should have more than enough low-mid range pull on the roads.


I'd guess it's going to be incredibly "buzzy" when bobbing along at a decent speed !

[Tmation]

a -1 front or +2 rear sprocket change is very common on these bikes. Or do both 


A speedo healer fixes any speedo error.



See here for all the details [size=78%]http://www.cartestsoftware.com/fz1/[/size]

[PieEater]

Reading Pat's information he went down 1 tooth on the front and up 3 teeth on the rear and was pleased with the results. I'd like to try this myself but am put off by the costs not only of the sprockets but you'll need a speedo healer as well and then you have the ongoing additional costs due to a reduction of MPG by 10-11%. If I'm out on a 'spirited' ride the fuel light will come on after 135 miles which is bad enough but after changing both sprockets this would drop to 120 miles.

The last time I considered this option I decided against it on the basis that I couldn't really justify the costs and if I need more acceleration I can just drop a couple of gears. If you do decide to go for it let us know how you get on.

[Timbo]

On my previous Ivanised Fazer I went -1 tooth on the front.


I still achieved a measured 50mpg twos up on tour....and I ride fairly hard too. 45mpg was the average I would say over the 7 years I had the bike.


You'll never use the top end speed and the extra acceleration is worth the additional spends. I am about to go -1 on my second Fazer in the near future as my chain is nearing the end of life.


Do it! 

[Robgosty]

Had a play with gearing commander, http://www.gearingcommander.com/ not a lot of difference between -1 on front and +2 on back, I think +2 on back is way to go, easier to do as no hassles with sprocket nut, and less chain wear    dropping one tooth on front is nearly exactly the same as +3 on back so +2 on back seems like a happy medium, be good to have front wheel on floor for at least some of the time   

[markie_wales]

I found +3 on the rear too buzzy for what I brought my bike for (taking my lad out). I like it better for my use now although I still think 6th it too low for this bike, but that would mean a gear box change!


Also the front was awfully light when accelerating with +3 and my lad on the back - a bit too easy to loft it when not wanting to!


cheers


Markie

[Timbo]

Had a play with gearing commander, http://www.gearingcommander.com/ not a lot of difference between -1 on front and +2 on back, I think +2 on back is way to go, easier to do as no hassles with sprocket nut, and less chain wear    dropping one tooth on front is nearly exactly the same as +3 on back so +2 on back seems like a happy medium, be good to have front wheel on floor for at least some of the time 

I think you find -1 is better than +2 on the rear.

Look at the bottom of the gearing commander there is another calc regarding the number of links and wear rate.

Bw

Timbo

[PieEater]

[quote author=Robgosty link=topic=20334.msg234547#msg234547 date=1466163103]
Had a play with gearing commander, http://www.gearingcommander.com/ not a lot of difference between -1 on front and +2 on back, I think +2 on back is way to go, easier to do as no hassles with sprocket nut, and less chain wear    dropping one tooth on front is nearly exactly the same as +3 on back so +2 on back seems like a happy medium, be good to have front wheel on floor for at least some of the time 

I think you find -1 is better than +2 on the rear.

Look at the bottom of the gearing commander there is another calc regarding the number of links and wear rate.

Bw

Timbo
[/quote]
Additionally a larger rear sprocket will shorten the wheelbase making it easier for the front to come up. A smaller front sprocket will give you a longer wheelbase so you'll be able to better use the extra acceleration.