Supporting Member betoney Posted October 1, 2020 Supporting Member Share Posted October 1, 2020 15 minutes ago, nhchris said: I'll re-ask my earlier question posted above along with the torque curve: Does a change in final drive gearing change the torque curve?* I don't see why it would, but I'm not really sure about that. If the curve does not change, the ride-ability of the bike should be the same. A 60- to 80-mph roll on normally done in 6th starting at 5k rpm now done in 5th starting at 5k rpm should yield the same result. Correct??? Changing the final gearing doesn't alter the torque curve or engine characteristics but does alter how quickly or slowly the bike can accelerate. It also affects how high you ride in the rpm range and the load on the engine, example, riding 2,500 rpm in 6th gear will put a huge load on the engine as it just doesn't have the power to pull that gearing whereas an C14, FJR or Goldwing was designed to run those low rpms and have the power to not bog down the motor. ***2015 Candy Red FJ-09*** Link to comment Share on other sites More sharing options...
simon1963 Posted October 1, 2020 Author Share Posted October 1, 2020 Hi guys the owner of a large multi bike dealer ship rode my tracer gt today with the new gearing expecting I suspect and fully intending to tell me I had over done it on the new gearing and said how nice it rode with zero concerns whatsoever. I no what I’m talking about and I no it is far better the way I have it. I do have 2 very small issues because of the change which I am willing to trade off for the better gearing. Thanks for your comments guy’s Link to comment Share on other sites More sharing options...
HGP61 Posted October 1, 2020 Share Posted October 1, 2020 If it works for you and you are happy with the result then you have done the right thing. Most of us have added and changed stuff to personalise our bikes and I think a change of gearing is a much better modification than some of the stuff I have seen done to try to improve the aesthetics of a bike, and lets not get into a discussion on the custom bike scene and the uncomfortable virtually unrideable bikes I have seen winning prizes at bike shows. 2 Link to comment Share on other sites More sharing options...
simon1963 Posted October 1, 2020 Author Share Posted October 1, 2020 Thanks very much for kind words move tried to post a picture but it says it’s to big and I have no idea how to change that also be nice to put a profile picture Link to comment Share on other sites More sharing options...
Chris FJR Posted October 5, 2020 Share Posted October 5, 2020 I'm a new Tracer GT owner, (also an FJR owner), considering a sprocket change as well to cruise 75mph at a little lower RPM. So I'm finding this discussion interesting. I came across this article in a Cycle World online site about changing to 17f x 43r. They claim this change accomplishes a lower cruise RPM and needs no change of chain size. It's what I'm considering when my warranty ends in a couple months, (just to be safe). Long-Term Tracer 900 GT Update Nick Ienatsch prepares his long-term 2019 Yamaha Tracer 900 GT to hit the... Link to comment Share on other sites More sharing options...
simon1963 Posted October 5, 2020 Author Share Posted October 5, 2020 You will find it very nice with the suggested gearing but may find the cruise control won’t work so well at lower speeds but will be fine in 5 and 6th gears and you may loose the quick shift from 5 to 6th but neither of these are a big deal condidering the massive improvement with the lower revs at for example 60 mph I Woukd be interested to hear how you find it so my email : simonhart1963@gmail.com Link to comment Share on other sites More sharing options...
Chris FJR Posted October 6, 2020 Share Posted October 6, 2020 Thanks for the additional info, Simon1963. As I said, I won't be doing this until my warranty is up in a few months, but I will repost with my results and email you. Link to comment Share on other sites More sharing options...
nhchris Posted October 6, 2020 Share Posted October 6, 2020 (edited) 34 minutes ago, Chris FJR said: Thanks for the additional info, Simon1963. As I said, I won't be doing this until my warranty is up in a few months, but I will repost with my results and email you. You might want to try changing to a 17 front first to see how you like it. If more RPM reduction is desired you can change the rear later. I found adequate reduction with a 17 front and stock rear. I think my numbers are: 4k rpm at 60 mph (indicated), 4,300 @ 65, and 4,800 @ 70. (Impossible to read that Tach accurately! WRT performance: My opinion is that you basically ride torque not HP. My (non-flashed ECU) FJ is in its flat (high) torque zone from 3,500 rpm to 10k. So this gear change does not really impact acceleration in any gear that I can tell. Edited October 6, 2020 by nhchris 1968 Triumph Bonneville 650 1971 Norton Commando Roadster 2002 Harley 1200 Sportster 2003 Honda ST 1300 2016 FJ 09 Link to comment Share on other sites More sharing options...
Supporting Member betoney Posted October 6, 2020 Supporting Member Share Posted October 6, 2020 1 hour ago, Chris FJR said: Thanks for the additional info, Simon1963. As I said, I won't be doing this until my warranty is up in a few months, but I will repost with my results and email you. Changing sprockets won’t affect your warranty. ***2015 Candy Red FJ-09*** Link to comment Share on other sites More sharing options...
simon1963 Posted October 6, 2020 Author Share Posted October 6, 2020 4 hours ago, simon1963 said: You will find it very nice with the suggested gearing but may find the cruise control won’t work so well at lower speeds but will be fine in 5 and 6th gears and you may loose the quick shift from 5 to 6th but neither of these are a big deal condidering the massive improvement with the lower revs at for example 60 mph I Woukd be interested to hear how you find it so my email : simonhart1963@gmail.com I’ll definitely be interested to hear your thoughts when you have changed it. Can I ask , so do you find it revvy as std and some gears a waste of time? Feel free to answer by email. Cheers Link to comment Share on other sites More sharing options...
Merciless Posted October 6, 2020 Share Posted October 6, 2020 I think when you change the front sprocket cruise control doesn’t work... 1 Link to comment Share on other sites More sharing options...
simon1963 Posted October 6, 2020 Author Share Posted October 6, 2020 It does work but it throws it out a bit. It works fine in 5th and 6th and that’s all I really want it for but it was handy in 30mph limits but I can get used to not having it for that. It’s a trade off and I definitely think the bike is better with new gearing Link to comment Share on other sites More sharing options...
HGP61 Posted October 6, 2020 Share Posted October 6, 2020 7 hours ago, nhchris said: WRT performance: My opinion is that you basically ride torque not HP. I feel that's how most of us will normally ride, I am very very seldom in the top third of the rev range and for most of us torque in the mid range is much more important for riding on the road. Link to comment Share on other sites More sharing options...
simon1963 Posted October 6, 2020 Author Share Posted October 6, 2020 Absolutely I am normally in the bottom half but when I need it it is there 100% Link to comment Share on other sites More sharing options...
Dodgy Knees Posted October 6, 2020 Share Posted October 6, 2020 I like to give mine a good ringing...keep the engine sweet. 👍 1 Link to comment Share on other sites More sharing options...
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