Aftermarket windscreen reduce fuel economy? - Honda CBR 300 Forum
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post #1 of 21 Old 04-18-2019, 11:05 AM Thread Starter
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Aftermarket windscreen reduce fuel economy?

I was looking at Puig 5022H and I was wondering if the windshield will reduce my fuel economy by a significant margin?

Has anyone done these calculations for both city and for highway at 75 mph?




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post #2 of 21 Old 04-18-2019, 01:44 PM
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It's possible it might actually improve your mileage. It has happened...
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post #3 of 21 Old 04-18-2019, 03:58 PM Thread Starter
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Cool! I have it coming in the mail tomorrow. Rest assured that I will be doing an experiment and will calculate the difference in miles per gallon. If it actually improves the fuel economy it would be a "must do" upgrade in my opinion.

I can handle the wind for a 1 hour ride (at 75 - 80 mph [120 - 127km/h]) but above that it really starts to take its toll on my body. I went on a 3 hour (each direction) ride that was 95% highway with a Meetup group of cruiser bros and at the end my body was pretty sore.

Lets be honest: It does detract a bit from the aesthetics of the bike (I mean the windscreen). But i dont think it looks TOO bad..... I will post a few pictures, stay tuned.

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post #4 of 21 Old 04-18-2019, 04:28 PM
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Yes, the teeny little windscreen that comes on the bike does seem to smooth the airflow, but you're still taking it pretty much full in the chest and over time it wears on you.
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post #5 of 21 Old 04-18-2019, 04:45 PM
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I can handle the wind for a 1 hour ride (at 75 - 80 mph [120 - 127km/h]) but above that it really starts to take its toll on my body.
Same, this is why I pretty much have to buy full faired bikes. 95% of my riding is at 70MPH or more. I like the look of the nakeds but the wind is just too much for me at 5'11. I generally lower the bars as well from stock to be able to cheat the wind even more. Our wind is cold where I live!
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post #6 of 21 Old 04-18-2019, 06:44 PM
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faired will always outperform naked in general roadwork, esp as speed rises..
there are more radically vertical windshields which seem to work well..
rider body positioning is also a factor, in aerodynamics and comfort,
esp over the long distances,, for which a racing crouch is just one example..
one simple eg is resting left forearm on tank, taking torso weight,
which allows a nice change of overall body shape, thus muscle load..
if you have a tank bag or carry-bag thats also handy to rest on..
instead of thinking of a racing crouch as the only option to
'sit up and beg' [like a sail into the air flow] think overall small
incremental changes in all joints,, to whatever suits you
and the particular ride, on any given day..
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post #7 of 21 Old 04-18-2019, 10:00 PM
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Originally Posted by King CobRa View Post
Cool! I have it coming in the mail tomorrow. Rest assured that I will be doing an experiment and will calculate the difference in miles per gallon. If it actually improves the fuel economy it would be a "must do" upgrade in my opinion.

I can handle the wind for a 1 hour ride (at 75 - 80 mph [120 - 127km/h]) but above that it really starts to take its toll on my body. I went on a 3 hour (each direction) ride that was 95% highway with a Meetup group of cruiser bros and at the end my body was pretty sore.

Lets be honest: It does detract a bit from the aesthetics of the bike (I mean the windscreen). But i dont think it looks TOO bad..... I will post a few pictures, stay tuned.

I personally love the look! My bike came with a universal Puig windscreen and it makes a pretty big difference on any wind that would've hit my chest and even my arms (the universal windscreen is a bit taller and wider than the one made for the CB300F). Should be a great addition to your bike.
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post #8 of 21 Old 04-18-2019, 10:56 PM
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I've taken my Puig fly screen off for now. I need to do a direct same day back-to-back to compare, but the net effect on my frame (6' 170lbs) in terms of wind deflection/buffeting is tiny.
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post #9 of 21 Old 04-19-2019, 01:14 PM Thread Starter
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The windscreen that I ordered (that was an Amazon return that I got for $62) came with missing pieces (the M6 nut that screws to the end of the bolt) that the previous customer must have dropped it and lost it during installation.

So unfortunately I will have to return it back to Amazon and I have lost enthusiasm for this so I am not planning to get another windscreen.

I really should not have purchased a naked bike in the first place. Should have gotten a sportbike with fairings and a windscreen.
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post #10 of 21 Old 04-19-2019, 01:25 PM
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I really should not have purchased a naked bike in the first place. Should have gotten a sportbike with fairings and a windscreen.
Until it's time to take the bike apart just to change the **** oil filter. Yamaha and Kawasaki have easy-access SPIN-ON filters, but not Honda for some ridiculous reason.
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