Tank range of ST1300

etalors · Aug 18, 2020

BakerBoy said:
Immersion is not what cools the pump. It is cooled by umping the fuel through the motor itself. A long, hot ride will raise the temperature of the fuel (it is pumped into the fuel rail and returned to the tank, continuously), so as the fuel volume decreases, the temperature of the fuel does rise. But still, the pump is internally cooled.

This is the most important response in this entire thread. I believe you are correct

. This was also shared before by another member a few years back, cant remember who. It lays to rest the popular view on this forum that the fuel pump is cooled by immersion and is at risk below two bars. Honda would not design a system that would be prone to failure if one consistently rode below 2 bars. Almost 1/3 of the total fuel is within these two bars and it was meant to be used. The only thing at risk is one's safety and convenience, if the bike runs dry thru miscalculation.

T_C · Aug 18, 2020

etalors said:
This is the most important response in this entire thread. [...] Honda would not design a system that would be prone to failure if one consistently rode below 2 bars. Almost 1/3 of the total fuel is within these two bars and it was meant to be used. The only thing at risk is one's safety and convenience, if the bike runs dry thru miscalculation.

Miscalculated once... not fun. BTDT don't be like me.

For over 100+k miles have I run from full tank to single flashing bar. If I do three round trips to work I'm flashing as I ride home and stop to fill up.
Still have factory installed OEM pump in my lower tank

MaxPete · Aug 18, 2020

We use kilometers here in Canada - so I usually go about 400 km before filling up (that is just about exactly 250 miles).

STRider · Aug 18, 2020

T_C said:
Miscalculated once... not fun. BTDT don't be like me.

My bike was delivered with a light fuel load (per the shippers' requirements); 3 bars.

Rode it from the freight depot toward home. Got 70 miles when it began to sputter, looked down and saw the fuel gauge flashing frantically. Fortunately I was able to make the 0.4mi to the closest gas station without further issues.

Have yet to truly test the range though. Soon, soon...

T_C · Aug 18, 2020

STRider said:
Have yet to truly test the range though. Soon, soon...

How much did you put in?

t-town ST · Nov 4, 2020

Does anyone know the capacity of the upper tank and lower tank separately?

caldercay · Nov 4, 2020

t-town ST said:
Does anyone know the capacity of the upper tank and lower tank separately?

FuelGauge < ST13 < STWiki

stwiki.notonthe.net

t-town ST · Nov 5, 2020

caldercay said:
FuelGauge < ST13 < STWiki

stwiki.notonthe.net

Thanks so much for the info.

TourNut · Nov 5, 2020

caldercay said:
FuelGauge < ST13 < STWiki

stwiki.notonthe.net

So this article is saying "Fuel in the lower tank is used to cool the fuel pump. A completely dry lower tank may cause the fuel pump to overheat and fail. " ;
My question is : has anybody's fuel pump failed and were they prone often to riding the tank down to 2 bars to near-nothing ?
( I realize to have nothing in the tank ( just sucking fumes ) would not allow internal cooling also )

caldercay · Nov 5, 2020

TourNut said:
So this article is saying "Fuel in the lower tank is used to cool the fuel pump. A completely dry lower tank may cause the fuel pump to overheat and fail. " ;
My question is : has anybody's fuel pump failed and were they prone often to riding the tank down to 2 bars to near-nothing ?
( I realize to have nothing in the tank ( just sucking fumes ) would not allow internal cooling also )

Read post #41 in this thread ... here's the link