Fuel tank capacity and float

[ElectricCircus]

Originally Posted by peperino

Yes, now comes the fine tuning, I need to find what float height works better for me

Suggestion:
I saw you have a multimeter in the toolset: measure the floater resistance with the tank full of gas, an same thing when empty (or at 2-2,5lts near the reserve limit). Next time you disassemble the tank also play with the float position against the LCD indication, measuring with the meter the resistance at Full and Empty limits.

That way you'll have a good reference to find a proper position/response of the float lever.

[peperino]

Originally Posted by ElectricCircus

Suggestion:
I saw you have a multimeter in the toolset: measure the floater resistance with the tank full of gas, an same thing when empty (or at 2-2,5lts near the reserve limit). Next time you disassemble the tank also play with the float position against the LCD indication, measuring with the meter the resistance at Full and Empty limits.

That way you'll have a good reference to find a proper position/response of the float lever.

Thats a good idea, I will try and take note of each limit OHM readout vs LCD indicator and post it in my article

[peperino]

I have updated my article, and added the value of resistance for each bar on the gauge.

After trying a bit, I decided to go for 30mm float height, as 42 is not enough. I changed it and so far is working as intended, I have 4.5L left in the tank, 0 bars in the indicator but still not flashing. I hope it starts flashing when I have between 3 and 4L left in the tank.

[Riceburner]

Thought I'd update my fuel tank capacity for you, I have run my tank to empty three times now and each refill the max I can get in is 13 liters, not 16 as advertised. I'd like 16 liters.

Has anyone else done a from empty refill and actually gotten 16 liters?

[peperino]

You can fit 14 if you really go to the very top.
Tank doesn't hold 16, confirmed.

I have contacted Zongshen via facebook and they told me they will inform their staff about it. I find it hard to believe that nobody at Zongshen checked its capacity. I believe they knew they were lying when they published the specs

[peperino]

I have a carburetor model, and this is not about fuel pumps, is about Zongshen lying about the fuel capacity in the published specs.

[pete]

Originally Posted by peperino

I have a carburetor model, and this is not about fuel pumps, is about Zongshen lying about the fuel capacity in the published specs.

sorry.... it was NOT my intention to up set you...
i will delete all the above info...
again...sorry...

[Ipatters]

Most I've got in is 14.3 litres and bike was spluttering, ie just about empty.

[keithmaine]

Has anyone done this mod / or adjustment to a fuel injected model?
I am also wondering if anyone has actually confirmed fuel tank size it seems on this post that 14L or 3.6 gallons is max. that is a far cry from 15.8L or 4.2 gallons tat is basically 30 miles of travel. I went 149 miles with the last 9 miles blinking away at me. It took 2.3 gallons of fuel. It would be nice if it did hold 4+ gallons we could use 3.0 of them before low fuel warning. I hoping I was getting away from carrying extra fuel containers.

[Danimal]

Same boat as you Keith. That difference is substantial considering the low 60s mpg I am seeing.
Now I gotta stop bragging about 4.2 gallons.....as that IS a selling point.
So when Zongshen sends out free 4.2 gallon tanks I want to be first in line

[keithmaine]

Originally Posted by Danimal

Same boat as you Keith. That difference is substantial considering the low 60s mpg I am seeing.
Now I gotta stop bragging about 4.2 gallons.....as that IS a selling point.
So when Zongshen sends out free 4.2 gallon tanks I want to be first in line

That is true KLR650 claims 6 gal. they get 5.5 - 5.8 usable. My TW200 has 1.8 and I had 1.5 usable.

Now I am going to have to drain the tank and see how much actually fits in there. Unless someone has already done it. And it is a big selling point.

This bike is great, but if only 2 gallons are usable we need to be honest. I though it would get an easy 200 mile per tank. On the first voyage I averaged 65 mpg (even at 3 gallons that would get me 195 miles)

[SpudRider]

It would be nice to have the advertised, 4.2 gallons. However, 3.7 gallons is still a nice quantity of fuel. I ran out of gas once, and the trip odometer read about 255 miles.

I average about 68 mpg. You should leave about 1/2-gallon in the fuel tank to prolong the life of the fuel pump. Therefore, I know I can ride about 210 miles before I refill the fuel tank. That's a pretty good range.

[SpudRider]

Originally Posted by keithmaine

That is true KLR650 claims 6 gal. they get 5.5 - 5.8 usable. My TW200 has 1.8 and I had 1.5 usable.

Now I am going to have to drain the tank and see how much actually fits in there. Unless someone has already done it. And it is a big selling point.

This bike is great, but if only 2 gallons are usable we need to be honest. I though it would get an easy 200 mile per tank. On the first voyage I averaged 65 mpg (even at 3 gallons that would get me 195 miles)

You actually have 3.2 gallons of usable fuel before you even begin to uncover the fuel pump. You can run the fuel tank dry, using all of the 3.7 gallons, and you won't fry the fuel pump. However, you will prolong the life of the fuel pump if you fill up every time you consume 3.2 gallons. This will ensure you always have at least 1/2-gallon of fuel to submerse the fuel pump.

[keithmaine]

So if I were to adjust the float to read empty at 3 gallons, I would be satisfied at that. Of course normally when I would refill at 1 bar. But knowing I can get to 200+ is comforting. Thanks Spud once again you come through for us.

[SpudRider]

You're welcome. The following link was provided in the first post of this thread.

https://coltermoto.wordpress.com/tri...ible-flotante/

The original poster (op) said the original float height was 65 mm. He thinks the empty fuel tank, warning light will begin to flash after using three gallons by setting the float height to 30 mm.