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Old 03-10-2013, 12:30 AM   #11 (permalink)
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Well with the route I take I've been getting 55ish. New non cut pipes would run me somewhere in the 150 ball park so prob won't do that unless the rust

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Old 03-10-2013, 01:12 AM   #12 (permalink)
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Teresa - '04 BMW F650CS
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Quote:
Originally Posted by renault_megane_dci View Post
My GN does 75 to 80 mpg not trying very hard, what does a GV do ?
I've had a look at your fuel log and I can say that a (factory) GV250 should be about the same.
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Old 03-10-2013, 05:52 PM   #13 (permalink)
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Quote:
Originally Posted by alvaro84 View Post
I've had a look at your fuel log and I can say that a (factory) GV250 should be about the same.
How about yours ?

(and what does my fuel log tells you ?)
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Old 03-11-2013, 01:32 AM   #14 (permalink)
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Teresa - '04 BMW F650CS
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Thanks: 4
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Quote:
Originally Posted by renault_megane_dci View Post
How about yours ?

(and what does my fuel log tells you ?)
The answer for the first half:

2005 Hyosung GV250 Gas Mileage (Ciliegia) - EcoModder.com

This is the log of Ciliegia, our GV250. I've retired her on my behalf, because I practically stopped riding Ciliegia, as she's my girlfriend's bike and she got her license in 2010.

Yours? Oh, much less than I thought on the first glance, I just saw the mpgs climbing up to over 80, but not staying constantly there. Looked like daily use to me. Now I see that you did extensive HW mods. We didn't, we just like to glide
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Old 03-11-2013, 03:05 AM   #15 (permalink)
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Brit iron - '92 Mini Mini
90 day: 45.5 mpg (US)

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Yes it is daily use and can happen to be spirited driving.

What is HW mods ?

Because I didn't mod the bike much, gearing is changed but appart from that I have just been doing a kammback experiment (which has not been very successful ...)
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Old 03-11-2013, 03:16 AM   #16 (permalink)
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Quote:
Originally Posted by renault_megane_dci View Post
What is HW mods ?

Because I didn't mod the bike much, gearing is changed but appart from that I have just been doing a kammback experiment (which has not been very successful ...)
Yup, these - gearing and kammback

Gearing is still the default in our case, but it's about to change. We haven't had a 90 mpg tank with the GV250, but it's apparently not impossible.
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Old 03-11-2013, 06:26 PM   #17 (permalink)
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well, given you P&G the **** out of it and, if I remember correctly, drive quite slow, (pretty much the contrary of what I do) I believe the GN is a better horse FE wise than the GV.
It is relevant with the fact the GN is A/ a single, B/ less powerful and C/ a Suzuki (which as everybody knows is the best brand).
(that is french bike rider humor by the way)

That being said, I stick with the statement that a factory exhaust or at least a proper exhaust is gonna return more MPG because it gives the bike more torque before the peak torque, allowing to use a higher gear for a given hill and to stay in a constant throttle position uphill which is the key to hypermilling a bike P&G appart.
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Old 03-12-2013, 03:05 AM   #18 (permalink)
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90 day: 80.53 mpg (US)

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90 day: 59.52 mpg (US)
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Quote:
Originally Posted by renault_megane_dci View Post
...I believe the GN is a better horse FE wise than the GV.
It is relevant with the fact the GN is A/ a single, B/ less powerful and C/ a Suzuki (which as everybody knows is the best brand).

But other than that, it's probably true.

Quote:
That being said, I stick with the statement that a factory exhaust or at least a proper exhaust is gonna return more MPG because it gives the bike more torque before the peak torque, allowing to use a higher gear for a given hill...
I second.

Quote:
...and to stay in a constant throttle position uphill which is the key to hypermilling a bike P&G appart.
Might work with a 250, I guess. They're more similar to cars in power/weight ratio than Teresa. With her, trying to accelerate gently and DWL the hills gives worse FE than P&G'y behavior and keeping the pace uphills then a big puuuuulse near the crest. If I want to be gentle for some reason (a dying belt or sprocket, or extra slippery roads), I always do a bad tank

Therefore practically the only place when I DWL is where there's a speed limit sign of 60km/h near the top of a hill. But even here I often get rid of the excess momentum before the incline and just keep her at the bottom of 5th (slight speeding after the sign, but I'm still slower than anyone else like this so I couldn't care less ), then give her gas when we're on the top and the limit is lifted. And then P&G down the other side.

OTOH, it seems P&G doesn't really benefit the GV250 at highway speeds, at least certainly not on flat. Hilly routes are probably different.
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Old 03-12-2013, 05:42 AM   #19 (permalink)
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la_voiture_de_courses - '03 Renault Megane Estate
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90 day: 44.34 mpg (US)

xiao lan - '01 Audi A2
90 day: 38.88 mpg (US)

Brit iron - '92 Mini Mini
90 day: 45.5 mpg (US)

Prius - '09 Toyota PRIUS Lounge
90 day: 47.37 mpg (US)

Beemer - '06 BMW F800 ST
90 day: 53.06 mpg (US)
Thanks: 188
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out of town operation is never below 70 km/h for me ...
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Old 04-18-2013, 04:06 AM   #20 (permalink)
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I fixed my bike so now it doesn't have the bogging issue anymore. So how long do those aftermarket sprockets last for?

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