Upshift at 5k rpm? - Honda CBR 300 Forum
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post #1 of 21 Old 08-07-2019, 08:16 PM Thread Starter
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Upshift at 5k rpm?

I was wondering how much you other riders wind up the engine. For example when upshifting from 3rd gear to 4th gear do you do it before reaching 5000 rpm?

That is the way that I have been driving. Usually upshifting at between 4000 - 5000 rpm. I use my ears as a guide of when to upshift and according to my ears the engine sounds like it is being over-burdened at higher than 5000 rpm.

But I must be doing something right because I am averaging 70 mpg with 40% highway riding.

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post #2 of 21 Old 08-07-2019, 08:32 PM
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A dyno chart I saw shows max torque at 6600 rpm, max hp at 8400 rpm.
In my opinion spinning it up a little more, and using more throttle, is not detrimental to the engine.
And more fun.
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post #3 of 21 Old 08-07-2019, 10:05 PM
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for those not yet able to ride by ear or feel etc, easy and effective rpm is around 6, with needle at easy to read 12 o'clock position..
obviously road slope and load factors will vary together with speed limits [thinking school zones etc] so revs also vary for smooth riding..
on long straight runs tho you can find that sweet spot rpm for different bikes and conditions.. even small throttle movements count..
6 gets you into good torque zone and allows for easy pickup after changing up, also allows good smooth engine braking downshifting..
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post #4 of 21 Old 08-08-2019, 05:27 AM
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5k is fine. I shift into 6th at 38-40 mph unless merging on 65 mph road which is twice a year to put the bike away for winter in parents' garage.

Occasionally I'll rip 6k shifts to have some fun. 9k blasts for a gear or two on certain days.

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post #5 of 21 Old 08-08-2019, 09:06 AM
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In the daily commute I usually gear up at 5K, it's a relaxed driving. But when I have a long strip to accelerate like joining the highway, of course I go up in the rpm.

When in the mountain roads I keep the engine "happy and awake", usually in the range of 6-7K and gearing up at around 8500-9K.

In the first day of the Big Bike course at Honda Riding Park (where we used CB300R and CBR300R for the training), learning how to accelerate fast and safe, the instructor said: "this is a big bike, you're no more riding a Wave or the grandma's scooter, push that f*cking engine up!" - in fact, they teach us to learn how to push until just before the injection cutoff.
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post #6 of 21 Old 08-08-2019, 11:18 AM
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I think feel is a big part of it. When I’m pushing her hard, I can feel myself coming out of the powerband because the bike accelerates slower....time to shift. With the CBR, I feel it just a smidge before redline.

If you are puttering around (or following your wife’s scooter), I would say 5k is good
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post #7 of 21 Old 08-08-2019, 11:35 AM
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I'm good at 5k--6k if I'm in a hurry- can't see going over 7k- between 7k and 8k there is only 2hp to gain-I feel the meat of the power band is 5-7k and I stay there
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post #8 of 21 Old 08-08-2019, 03:48 PM
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Generally around the 5K mark. I have 15T front sprocket which is perfect for all my riding.
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post #9 of 21 Old 08-08-2019, 05:48 PM Thread Starter
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Do you think upshifting at 6000 rpm would cause a significant decrease in fuel economy as compared to 5000 rpm upshifts?

In my opinion the engine is making alot of noise at 6000 rpm. It is my "gut feeling" that the engine does not sound happy at 6000 rpm (In 4th gear for example).

My previous bike was a Ninja 250, so keep that in mind that this CB300F is actually the highest cc bike I have ever owned. So I think maybe the guys that have been riding bigger displacement bikes in the past have grown accustomed to different shift points.

2016 CB300F - 8000 miles - 100% stock config
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post #10 of 21 Old 08-08-2019, 06:58 PM
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Just shift when it feels right. I've done a lot of crap to my bike, and ride it pretty hard (12,000miles). Engine still feels as solid as the day I got it. 65mpg totally stop n go in-town driving.


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