These are the 2017 Honda Rebel 300 engine specifications listed out along with the tank capacity for those interested.
Bore (MM) 76 Compression Ratio 10.7:1 Cooling Liquid Displacement in CC 286 Displacement in CI 17.4 Engine Type Single-Cylinder Starter Electric Stroke 63 Valve Configuration DOHC
What most of us here are really after is power and torque numbers and how its being put down, so with that being said, here's the real meat and potatoes of engine specs...
Point proven, CBR300R dyno chart did its job of providing some insight into what the engine is capable of and we can see from what you posted it didn't fall too far off. Not the same as the 300R but close enough.
It did provide some insight but the differences are shown there, looking at the chart in that very basic form and you can tell it'll be a noticeable difference in power delivery.
It's not that much more and anyone who has really delved into the specs would factor in the weight difference of the two. The only real benefit we have going on here is better off the line power, but with the weight we're working with, that comes to no surprise.
Not really sure what you are talking about since the Honda Rebel is the heavier bike.
Not to mention weight wouldn't change DYNO results.
What it shows is the Rebel will have a tiny bit more torque at the line, but the minimal difference and increased weight of the rebel will likely negate that.
It also shows a lower horsepower almost across the board and also quite a big drop in peak horse power. Peaking at a lower RPM than the CBR but not having near the top end speed.
To be honest I think there is a reason for this and sadly it isn't a good one. From what I read, the original plan was only going to include a release of the Rebel 500.
The 300 was only added really to fill the need in asian markets and such. And will be sold globally because it would make a good starter bike.
But the thing is the bike design was based on the 500cc engine not the 300. And while they tuned the 300cc in the same way they redid the 500 the results were not the same.
The Rebel 500 has more Horsepower than the CBR until all the way at the top RPM where the CBR has a higher peak horse power.
And the Torque on the Rebel 500 is higher until it gets into the higher rpm range making it much better in city.
So with the Rebel 500 you get a bike that would actually outproduce the CBR500 in the City and actually out produce it on the highway except for top speed.
But with the Rebel 300 you get a bike that likely would not be able to keep up with the CBR300 outside of first gear.
Not that the 300 will be a horrible bike or anything, it will still be fine. But it just clearly seems like its design was just an after thought.
Technically this thread was just for engine specs itself. Once the dyno charts came in that kind of threw it towards more of the dyno numbers. The dyno is definitely just a reference point and only plays a part in the overall road performance that's vital for us to know.
BUT if we were looking at overall road performance, this would be a completely different thread.
Well its easy to see why the 300 didn't get as much attention because why should it? Should they just spend more R&D dollars than they should to get similar or slightly better results? Starting off like this is the best way to go, they can always change and adjust as they go. Personally im pleased with the 300
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