I am currently living in Vietnam where it is almost impossible to go over 200km/h on most of the roads. I have decided to change my gearing and thinking of going with 14t on front and 47t (Supersprox Stealth) on back with RK 520 GXW chain (I am using shinko 705 150/70/17 tire). I looked at the https://www.gearingcommander.com/
and based on that the top speed would be about 200km/h and the quicker acceleration would be much more beneficial in this area (most roads for bikes have 50-60km/h limit). One thing I want to make sure is if the chain with 114 links will work for this setup? The gearingcommander site does not show the data for the 2016 model and goes only up to 2015, not sure if there was a change in 2016 or if it is the same?
BTW has anyone gone down on the front sprocket and what was your experience with it like? Reason why I also decided to go 1 up on back is because that gives me closest sprocket distance to the stock one.
Here is a excellent thread
Whenever possible, never drop teeth count on the front sprocket, add teeth to the rear. I will explain, on my 07, I went up to a 16 / 46 tooth , that was a torque reduction of 6.67% on the chain, it was done to correct the speedometer , also to bring the revs down. My 2015 Versys is stock 15 / 46. Chain torque wheel torque not the same. What you will need to do is get a 120 link chain and a different rear sprocket. FYI both your speedometer will be off showing higher and your odometer will also show higher mileage. The reason for the tooth change adding on the rear , by reducing the front sprocket, there are less teeth in contact with the sprocket, the diameter is smaller and therefor has a greater torque or twisting action, which under the right conditions will stretch the chain in the process of energy transfer.
I have looked and found several sites explaining never to reduce the front sprocket from stock explaining a increase in friction, but nothing explaining that a increase in torque on the chain. Need to leave and will look again, as I don't think I am explaining it as clearly as I would like. FYI, the stock DID chain on my 2015 Versys in Canada , was absolutely crap
, less than 11,000 KM, in fact I should have thrown it out at 3000 KM.I thought it would loosen up, all it did was stretch in some sections.