The CBR250R Gas Mileage Thread - Page 67 - Honda CBR250R Forum : Honda CBR 250 Forums
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post #661 of 689 Old 06-06-2018, 02:32 PM
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^I'm using Pilot Street radials and haven't noticed any difference in fuel economy on my bike compared to the IRC tires.

My computer is fighting Aids and Cancer in it's idle time, and yours?
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post #662 of 689 Old 06-08-2018, 05:23 PM
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my last three tankfills : 85 mpg, 101.1 mpg and 94.4 mpg

Hypermiling to a better tomorrow
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post #663 of 689 Old 06-08-2018, 08:29 PM
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Did you change the gearing yet?


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post #664 of 689 Old 06-09-2018, 12:14 PM
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Yes, I'm running 15/36 gearing now. I wish I could go taller.

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post #665 of 689 Old 06-13-2018, 02:35 PM
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Quote:
Originally Posted by greenaero View Post
Yes, I'm running 15/36 gearing now. I wish I could go taller.
Well, if your limiting factor is finding taller sprockets, then wish no longer! PBI sprockets offers blanks and custom sprockets. In the 520 size, the blank aluminum sprockets are available down to 32 teeth. If you select the custom aluminum option you can go down to 25 teeth!


https://shop.pbisprockets.com/category.sc?categoryId=56


I just broke 60 mpg in my 4 cylinder CBR 250R. That tank included a whole lot of 17,000 RPM, and sudden braking trying to P&G cause my older brother in front of me refuses to use the brakes, instead using engine braking. I got a more aerodynamic fender off of the OG CBR 250 Four, which I will install soon. I also got a small oil pan heater for my little screamer.





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Last edited by Das Chicken; 06-13-2018 at 02:49 PM.
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post #666 of 689 Old 06-26-2018, 12:18 AM
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I'm averaging between 72 to 78 mpg on mine in Santa Fe, NM at 7000 to 10,000 ft elevation.
Daily work commuter on weekdays and plenty of aggressive (to me) riding in the twisty hilly roads for fun.
It makes me happy for the cheap thrills!
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post #667 of 689 Old 07-02-2018, 02:10 AM
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Aero front fender installed, unfortunately it was not the bolt on modification I thought it would be. It did require cutting and drilling new holes in the fender. Also, my oil pan heater wont fit on the CBR or the VFR 400. I may be able to make it fit on the radiator, will have to look into that further.

With the new fender installed, I was able to squeak in a new record tank at 60.5 MPG, breaking the previous 60.3 MPG. Most of the tank was 65+ mph pulse and glide. It has been a while since I had ridden the bike, at least two weeks, so I couldn't get a feel for how it affected coasting, but it does coast surprisingly well. It was quite windy when I was out riding, and I do think the fender made the bike slightly more sensitive to wind, but it is entirely manageable. I still have to make some brake return springs to reduce brake drag, as it is noticeable.






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post #668 of 689 Old 07-02-2018, 11:34 AM
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Very cool Das Chicken!
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post #669 of 689 Old 07-08-2018, 02:39 PM
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I want got a new personal best tankfill for my CBR at the 2018 Hollister Vetter Fuel Economy Challenge with 136 mpg ( 133 miles/ 0.978 gallons ). It was the winning result for this competition. I'll post more details in the Vetter Challenge thread I started. This was done with full streamlined bodywork installed.
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post #670 of 689 Old 07-08-2018, 11:09 PM
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Congrats Vic!
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