2003 rc51 mpg - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 31 (permalink) Old 12-05-2011, 04:35 AM Thread Starter
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2003 rc51 mpg

what do you get in MPG for your RC?

i have only been getting about 100 miles per tank... seems horrible to me. thats less than 20 MPG.

any thoughts? also what year do you have?

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post #2 of 31 (permalink) Old 12-05-2011, 04:43 AM
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Easy street riding I get 110-120 before the light comes on.

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post #3 of 31 (permalink) Old 12-05-2011, 07:48 AM
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15/40 gears , i have seen 140 but that was putting around , most of the time i hit 100 and i look for gas , i never run it down to almost empty

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post #4 of 31 (permalink) Old 12-05-2011, 08:19 AM
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Ditto here... Only mods I have are sato exhaust and power commander. The bike gets awful mileage. Fortunately, it's also not particularly comfortable, so after 100 miles I find I want to stretch anyway!

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Originally Posted by Waldo View Post
Easy street riding I get 110-120 before the light comes on.

If you're going to tell me how many RPM's something is turning, please tell me how many minutes so I can convert that to something useful .
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post #5 of 31 (permalink) Old 12-05-2011, 05:39 PM
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In town Ive been getting about 27mpg and hwy riding close to 40.

Im not sure how much 10% high speedo reading affects that. But Im running 16/42, a 190/55, OEM PSI's and no PC.
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post #6 of 31 (permalink) Old 12-05-2011, 06:15 PM
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Originally Posted by James_03_rc View Post
In town Ive been getting about 27mpg and hwy riding close to 40.

Im not sure how much 10% high speedo reading affects that. But Im running 16/42, a 190/55, OEM PSI's and no PC.
Mine is close to this with the 16/41 gearing.



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post #7 of 31 (permalink) Old 12-05-2011, 07:35 PM
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I get about 20mpg. -1 +2. with a pc3 and fullsystem. But my rides are high rpms with some knee down time, not alot but some. The funnest bike I have ever had tho.
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post #8 of 31 (permalink) Old 12-05-2011, 09:19 PM
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I run a 16/42 and normally get about 110 in town. When I'm on the road I get about 130 droning. On a recent trip to Arkansas I averaged about 125 miles in the curvy part of the trip. I have a PC with Dan Kyle map. Hopefully this summer I will get it on the dyno and a custom map done.

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post #9 of 31 (permalink) Old 12-05-2011, 09:25 PM
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This is a post from me about 6 months ago
I looked up some info. The fuel tank capacity is 4.8 gallons. The spec for reserve is 1.2 gallon. That's when you're light should come on. Which means you've used 3.6 gallons.
My real life milage reflects closely what most everyone else has said, at worst 100 miles and at best, about 140 miles when the light comes on.
So the last 2 times, i really paid attention, and got 3.6 and 3.61 gallons if i fill up within a mile or two of the light coming on.
So I'm getting 28 to 38 mpg depending on how i ride. Sounds about right to me.
Original question:
I tried to RTFF, as well as RTFM... even searched the site via google but can't find this simple answer. How many miles do you get once the fuel light comes on? Just curious...
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I should be able to go at least 30 miles. Hopefully.
Maybe as far as 46 miles, but that i don't want to confirm.
I'm running 15/42, 190/55, Yosh exhaust and PCIII with Yosh map.

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post #10 of 31 (permalink) Old 12-06-2011, 09:11 AM
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I get roughly 110 miles per tankful on average, I think (I usually fill up before putting the bike away, so it doesn't always go to reserve). One tip - although the tank can look full when the pump trigger auto-stops, if you pump slowly it's possible to put in another couple of litres. I usually fill it absolutely full.

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