Announcement

Collapse
No announcement yet.
X

highway speeds, gearing

Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • brandon
    started a topic highway speeds, gearing

    highway speeds, gearing

    I just bought a o1 katana 600 to use for commuting its geared at 15/45. Ive never owned one of these high revving bikes before but at highway speeds in 6th gear im between 5000 and 6000 rpm. are these motors made to be ridden like that or do I need to gear it further for highway use?

  • lncoln
    replied
    Wow...some people shouldn't be aloud to have bikes.


    As for the breaking at higher rpms on the freeway...unless you're running while your oil level is at half or less constantly, and don't take care of your bike, it'll be fine. These bikes, as most i-4 ricers, are meant to be riden at higher rpms...they love it. You just have to take care to make sure you keep up on your maintenance at shorter intervals...as they tend to wear down a little faster when you ride harder.


    @rschlegel...you're correct. I also lost about 3 miles to my full tank range, but that is not a big deal to me...as i don't let my tank get below a 1/4 anyway...would rather have the roll on, and take off torque. I'm not hard on her (lol) anyway. She's my only ride, take real good care of her.
    Last edited by lncoln; 09-03-2014, 05:38 PM.

    Leave a comment:


  • maniac1886
    replied
    Originally posted by rk97 View Post
    Freaking Stupid on sooo many levels. I tell ya what, if I was there, I wouldnt be getting close to that tailpipe trying to record it. I would be putting myself at a safe distance. That dude on the bike is lucky he didnt blow himself up!!

    Kinda like this. 1st problem - being an idiot. 2nd problem - being an idiot on a kaw.

    https://www.youtube.com/watch?v=MAGYCamFS0I

    Leave a comment:


  • shpielers
    replied
    What the holy mother of god...why would you do that to a bike...
    Cool vid, but man...why???
    Pretty sure those sparks flying out the exhaust are prices of metal that are supposed to be inside the engine...

    Leave a comment:


  • rk97
    replied
    stock gearing really is a pretty good compromise of economy and acceleration.

    I had my mind set on changing my gearing for better acceleration, but after riding to work a few times (40 miles), I decided that would really be a waste of money. I may go up a tooth or two in the rear when the time comes to buy new sprockets and a chain, but it's certainly not necessary until they current set is worn.

    as for "hurting" the engine with high RPM, that is almost laughable. If your bike is moving at highway speeds, then air is taking heat away from the oil cooler, and your bike is going to be fine. If you're holding it on the rev limiter at a stoplight, that's a different story. Even so, GSX-F motors are pretty hard to destroy...

    http://youtu.be/tuX8msryuyg

    The bike in that video is a '91 GSX-R, so different cams than the GSX-F motors, but still an air-cooled Suzuki I-4. Obviously I don't recommend doing that to your bike, but think of this the next time you're cruising at 7k for a few minutes and start to worry about things breaking.
    Last edited by rk97; 09-03-2014, 11:32 AM.

    Leave a comment:


  • rschlegel
    replied
    6k at 70 is not too bad. That sounds like the rpm came up around 500rpm from stock if I am correctly remembering where my stock gearing puts me at 70 mph.

    Leave a comment:


  • lncoln
    replied
    I went -1 in front, +1 in the rear on my 94 750. You get a significant difference. When i leave a stop light, i get quicker take offs at lower revs...exactly what i wanted. Rolling down the street or on the freeway, i have more passing power at lower rpms. I notice more torque all the way through the band.

    In fact...i was cruising on the freeway this morning, and had to slow from 75 to 40...i was in 6th, and didn't downshift. When i rolled on the throttle, there was no hesitation...just pulled all the way back to 75.

    My freeway rpms...6k at 70, 6600 at 80, and 7k at 85.

    Leave a comment:


  • BareKat
    replied
    Jim, you sound like a lawyer...

    I put a 16th front sprocket on with a bit of grinding of the cover...... the cover isn't structural per see.

    I posted pictures on katriders when I did the install.
    Originally posted by GSXFJim View Post
    Not 'a bit', you will need to remove a mounting point on the case for the sprocket cover and it will also put your chain very close to the clutch push rod. A 16t is just not a good idea.

    Leave a comment:


  • GSXFJim
    replied
    Originally posted by BareKat View Post
    You can go to a 16T from sprocket but you'll have to grind the aluminum case a bit..
    Not 'a bit', you will need to remove a mounting point on the case for the sprocket cover and it will also put your chain very close to the clutch push rod. A 16t is just not a good idea.

    Leave a comment:


  • BareKat
    replied
    You can go to a 16T from sprocket but you'll have to grind the aluminum case a bit.

    I would worry about rpm compared with the twins... our four's are almost turbine smooth in comparison.

    Originally posted by freakngroovn View Post
    I recently got an '04 750 and also had the same impression as brandon. I do try to keep in mind that the thing redlines above 11k, but am still pondering upping the drive cog a few teeth and/or dropping the rear chainring a few, mostly to try get more miles out of a tank of gas - the guys I ride with have miserly twins - and maybe drop a few revs at the same time. I'm thinking if it drops me a little farther away from torque/hp peaks I can quickly get the revs up with a tap or two of my left foot. Any guidance on max/front and min/rear sprocket sizes? As a starting point?
    Thanks!

    Leave a comment:


  • GSXFJim
    replied
    Originally posted by 92xjunker View Post
    58t.....hehehe what's he trying to do, climb a telephone pole...
    Roll-on wheelies man, roll-on wheelies...LOL

    Leave a comment:


  • 92xjunker
    replied
    58t.....hehehe what's he trying to do, climb a telephone pole...

    Leave a comment:


  • GSXFJim
    replied
    Originally posted by chris38 View Post
    .... I want that seat of pants take off. ... What do y'all recommend.
    Buy a Super Sport bike.

    Originally posted by chris38 View Post
    Ok another question. Has anyone here seen what a 14 tooth on front of the katana will do? Will I feel a big difference from stock 15. Or do I need to do the back too. To feel a real difference?
    Stay with 15, 14 will not get you much and as you reduce the size of the C/S sprocket you put more pressure on the rollers, and as that pressure is applied it will lead to premature roller wear and failure.
    It's easier to swap the rear, I have produced a 58t rear for a member here and he went back to a 47 after a time. A 15/50 is a popular set.

    The bottom line here is the Kat is heavy and under powered so you're not going to get SS bike performance out of it no matter what gears you put on it.

    Leave a comment:


  • chris38
    replied
    Ok another question. Has anyone here seen what a 14 tooth on front of the katana will do? Will I feel a big difference from stock 15. Or do I need to do the back too. To feel a real difference?

    Leave a comment:


  • 92xjunker
    replied
    Stay with the 15, for torque... Buy a better bike....jk. Increase the rear sprocket.

    Leave a comment:

Working...
X