Fuel capacity

[Calboy]

So ... funny story....

My rocket had been turning on the light and showing 0 miles to empty at around 130 miles. It usually had 2 gallons left in the tank, so when my light came on yesterday morning I ignored it.

Today, at 160 miles, I got the privilege of pushing the rocket, uphill, for about a 1/2 mile to the gas station. She took 5.97 gallons of gas in a claimed 5.9 gallon tank

R3R_Slip Tune and a heavy hand yield 8.6 liters /100 km or 27.5mpg (US).

TL/DR: When making right hand turns, if the bike stalls, you are about 1 mile from being OUT of gas!

That's more like it and can relate to it because that's exactly how it happened to me. Thank you!

 

[cr0ft]

Today, at 160 miles, I got the privilege of pushing the rocket, uphill, for about a 1/2 mile to the gas station. She took 5.97 gallons of gas in a claimed 5.9 gallon tank

R3R_Slip Tune and a heavy hand yield 8.6 liters /100 km or 27.5mpg (US).

Yeah I can reach 36 mpg US (6.5l/100 or so) if only doing long-haul highway miles, but as soon as there is some stop-start involved even a light hand on the throttle kicks it up to 7.5. A heavy hand can easily lead to 8.5 or more.

Though I'm still getting some extra variance from not quite standardizing how I fuel up, a full tank with the nozzle fully in the tank is not at all the same as a full tank when you lift the nozzle and baby an extra half liter to liter in there.

And I ain't pushing this bike half a mile for anyone, I'd call somebody.

 

[CanberraR3]

Don't need a fuel guage, I just use 10km per litre (or 10 litres per hundred kms) as a guide. It's a conservative measure but a simple calculation - if I've traveled say 120km since filling, I've used 12 litres although in reality it's usually less. I generally fill up around 200km regardless but if I get to 240km I do some serious looking for a station.

 

[1olbull]

Don't need a fuel guage, I just use 10km per litre (or 10 litres per hundred kms) as a guide. It's a conservative measure but a simple calculation - if I've traveled say 120km since filling, I've used 12 litres although in reality it's usually less. I generally fill up around 200km regardless but if I get to 240km I do some serious looking for a station.

Let's see, Mate . . . 240km X .621372 = 149.13 miles.
Yep that's what I do, fill up between 150 and 180 miles.
Usually it's at 140 - 150 if I be with other riders on different brands.
The thingy bugging me is the odo accuracy. Mine runs 10 miles less than the Yammy Stratoliner and Gold Wing of my brothers'.
My speedo is flat on with my GPS. WTF???
Me thinks next ride I shall carry a 1 gal jug and find out my fuel capacity for sure!

 

[cusso ken]

Let's see, Mate . . . 240km X .621372 = 149.13 miles.
Yep that's what I do, fill up between 150 and 180 miles.
Usually it's at 140 - 150 if I be with other riders on different brands.
The thingy bugging me is the odo accuracy. Mine runs 10 miles less than the Yammy Stratoliner and Gold Wing of my brothers'.
My speedo is flat on with my GPS. WTF???
Me thinks next ride I shall carry a 1 gal jug and find out my fuel capacity for sure!

Mate for me it is better to just top up the tank in the garage then get a syphon going into a container that you can accurately measure the contents and when you get to 21 litres see if the bike will run as you are doing this watch the fuel gauge and low level light for indication levels ,works for me and avoids running out somewhere on the road and having to decant the fuel out of your drum, I do this on every new bike I buy just for my own reassurance.

 

[1olbull]

Mate for me it is better to just top up the tank in the garage then get a syphon going into a container that you can accurately measure the contents and when you get to 21 litres see if the bike will run as you are doing this watch the fuel gauge and low level light for indication levels ,works for me and avoids running out somewhere on the road and having to decant the fuel out of your drum, I do this on every new bike I buy just for my own reassurance.

Ken,
Me reckons that a dynamic test would be superior to a static test.

 

[cusso ken]

Ken,
Me reckons that a dynamic test would be superior to a static test.

Fair enough ,but it does give you an indication of how accurate the gauge, its a bit like Dyno testing that does not replicate actual on road conditions ,wind resistance , riders weight, inclines or altitudes but is a fair indication of performance.

 

[1olbull]

Fair enough ,but it does give you an indication of how accurate the gauge, its a bit like Dyno testing that does not replicate actual on road conditions ,wind resistance , riders weight, inclines or altitudes but is a fair indication of performance.

Also fair dinkum, Mate.
My concern with your method would be inability to duplicate exactly where and when the tank runs out of fuel our on the roadway.

 

[cusso ken]

Also fair dinkum, Mate.
My concern with your method would be inability to duplicate exactly where and when the tank runs out of fuel our on the roadway.

Me thinks unless you are going to ride the exact route everytime you will not be using the same method to duplicate the fuel usage, I know on my bikes that when low fuel light comes on and the gauge shows around near emty I have 3.5 litres of fuel remaining, good for around 60klms till pushing time. but I rarely let the fuel level sink this low.
Cheers

 

[1olbull]

On my Roadster, the light comes on at about 130 miles. The fuel trip still shows about 50 miles left. When it descends to "0", I have gone at least 20 more miles without running dry.
I want to see just how far it will go?