4k at 55 mph is rediculous - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 65 (permalink) Old 05-27-2014, 03:09 PM Thread Starter
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4k at 55 mph is rediculous

Why are the gears so short on this bike. Geez. I just want to cruise at highway speeds and be at or below 3k. What have you done to help the rediculously short top end gear? I swear every time i ride i try to kick it into an invisible 6th gear.
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post #2 of 65 (permalink) Old 05-27-2014, 03:12 PM
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Not trying to be rude, but if that's what you want get a different bike. The engine on this bike is made to run higher RPMs than your standard cruiser these days. It doesn't affect the gas mileage or performance of the bike. That is just the way the engine is made.

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post #3 of 65 (permalink) Old 05-27-2014, 03:24 PM
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Originally Posted by One1 View Post
Why are the gears so short on this bike. Geez. I just want to cruise at highway speeds and be at or below 3k. What have you done to help the rediculously short top end gear? I swear every time i ride i try to kick it into an invisible 6th gear.
The bike was designed in the 80s for 55mph speed limit. The engine was also designed for mid to high RPM usage, not low down (0-2k). Nothing to really do about it, the engine is fine at the RPMs required for freeway riding.

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post #4 of 65 (permalink) Old 05-27-2014, 03:28 PM
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+1

The 750 in our bikes is happiest at 4-5k according to most riders. some frequently run over 6k for long times without issues.


If your bike sounds like its gonna self destruct at that rpm, then you need to look at it mechanically. Bad cam tensioners, or other problems can make them really noisy

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post #5 of 65 (permalink) Old 05-27-2014, 03:40 PM
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Originally Posted by One1 View Post
Why are the gears so short on this bike. Geez. I just want to cruise at highway speeds and be at or below 3k. What have you done to help the rediculously short top end gear? I swear every time i ride i try to kick it into an invisible 6th gear.
This is an observation, not a personal attack:

Why are the majority of new members complaining about the same "problem"? If you read through some of the discussions and information that has been around you wouldn't be so shocked when your bike runs at higher than expected rpms. There is no 6th gear, they never intended to have one and it is designed to run in the mid to high range of the rpms.

Again, not an attack but an observation.


You can't drop rpms like other bikes because of the shaft drive and gearing. Possible changes could be to put a different size tire on the back, but you won't see a drastic change.

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post #6 of 65 (permalink) Old 05-27-2014, 04:36 PM Thread Starter
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You can't drop rpms like other bikes because of the shaft drive and gearing. Possible changes could be to put a different size tire on the back, but you won't see a drastic change.
Because of the shaft drive. Thank you.
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post #7 of 65 (permalink) Old 05-27-2014, 04:41 PM
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Because of the shaft drive. Thank you.
I think what M_angell is referring to is because of the shaft drive, we cannot easily change our final drive ratio. We cant change out sprockets (chain drive) or pulleys (belt drive).

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Last edited by michiganteddybear; 05-27-2014 at 04:43 PM.
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post #8 of 65 (permalink) Old 05-27-2014, 04:44 PM
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Quote:
Originally Posted by One1 View Post
Why are the gears so short on this bike. Geez. I just want to cruise at highway speeds and be at or below 3k. What have you done to help the rediculously short top end gear? I swear every time i ride i try to kick it into an invisible 6th gear.
Ha, ha, maybe they made it so you could kick tail on some of those good roads you have around Signal Mtn., like Mullins cove or comin up 127, or the W road ...lol... And you ain't far from some other serious Mtn. roads... Like others have said it likes to run in kinda high RPMs, and that is where it lives well... Hey go ahead and rev. her, I dropped mine and tried to hold it up by the throttle, and when I saw the tach it was coming out of the bottom somewhere around 12k, so I know for a fact they will turn up some Rs. ...lol...
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post #9 of 65 (permalink) Old 05-27-2014, 04:58 PM
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Quote:
Originally Posted by michiganteddybear View Post
I think what M_angell is referring to is because of the shaft drive, we cannot easily change our final drive ratio. We cant change out sprockets (chain drive) or pulleys (belt drive).
Exactly. Its the same story with nearly every shaft drive bike.

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post #10 of 65 (permalink) Old 05-27-2014, 10:38 PM
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4K @ 55mph, hmmm. That means it has 4500 rpm left to redline. Sounds like you need to twist the wick up a little. That's below half of recommended max rpms, right in the middle is where that little fellow is starting to run good.




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