Not always.

 

Hence the "about".

 

thanks for the input,
I reset the trip A switch every time I fill up,
and it hits the 150 mile (+/- 2 miles) when the light comes on,
it is also at ~1/8 of a tank left at the 150mile / low light...
Hmm so let me see ( put the brain back in my head for a minute)
5 gallaons at full
2.5 gallons at half
1.25 gallons at quarter tank
0.625 gallon at 1/8th tank (150 miles low light comes on)
So then... I use 4.375 gallons to get 150 miles that equals 34.29 miles per gallon
And if I have 0.625 gallons left I should be able to go another 21.4 miles till bone dry
(I used a calculator) So about 170 to 175 is the limit at around town driving(30-60 mph)
And I bet I can get the 200miles out of the constant high-way speeds...
I have just been filling it up when the light comes on at 150, just to make sure. I didn't want to chance running it dry...
Ok I can take the brain back out and play with it now...... duhhhhhhhhh

 

Haha good job. My light usually comes on at about 125 miles in the city with about a gallon left so I get about the same mileage as you, it's just the light comes on at a different time. 1/8 gallon left is cutting it too close I think. That's why I say don't trust the light.

 

Question ... I haven't picked up my FatBob yet (I will either today or tomorrow depending on dealer red tape) but these bikes have gas gauges right? I've had many bikes where the tripometer WAS your "gas gauge" after figuring out your average mileage but these bikes HAVE gas gauges. How come nobody has mentioned them? Don't trust them?

 

You have a very small tank with a very irregular shape relative to a car. Fill a box with water and lean it. The depth in the center will stay the same until either the fluid hits the top or doesn't cover the bottom. That's why car gas gauges are accurate. Lean side to side, forward to back and the fuel level your tank at any given point can change quite a bit.

It's less true with the low fuel indicator because the tank is about empty. So they can give that area a regular shape that working pretty much like a car gas tank. The depth at the center is going to stay about the same despite the orientation when the gas gets that low. The more gas left when the reserve comes on the less precise the amount of gas left.

The problem with running to reserve is then you have to find a gas station. Say you get 50 mpg and there's a half gallon left when the reserve comes on. If you don't find a gas station within 20 miles you may well be pushing it. Add in that you're running a high compression engine that needs premium fuel and you start to get preferences on what gas you want to run. I've had to hit indy's for lack of anywhere else and I always regret it as I ping on down the road every time I accelerate moderately.

 

I have been taking readings on my last few rides, here are the results in both USG and metric, Bike FXDC, 90% freeway riding, I hope this helps,

Date U.S.Gallons Litres Milage in km Miles km/litre l/100km MPG

15.8.08 3.39 12.83 306 191.25 23.85 4.19 56.4

21.8.08 1.2 4.54 89 55.62 19.6 5.1 46.35
22.8.08 2.57 9.72 204 127.5 20.98 4.76 49.61
22.8.08 2.61 9.87 229 143.25 23.2 4.31 54.88

Ave mpg/Ave km/l Fuel tank 5.1 gal/19.3 Lt Range = 264 miles/422km

 

I stop at about 120 miles in between fill ups and top it off, nothing worse than running out of gas, I usually put in about 3.5 gallons in a five gallon tank, how many miles per gallon am I getting, and how many more til it is bone dry?


















ok so it works out to 34.285714285714285714285714285714 miles per gallon
that leaves 51.428571428571428571428571428571 miles til bone dry
That being said I could get 171.428571428571428571428571428571 miles per tank,
so why do I stop so short, That my friend is the question of the day.

 

You stop so short cause you are on dope?

 

right around 200 to 210 is all i can do before i panic and buy more gas