First, if you do not yet have a solid handle on why you use less power when going downhill, STOP making any decisions on changes to your system, until you figure out how it actually works.
There are not usually any specific setup changes you can make to a simple controller that will make any significant changes to performance, IF it is able to supply enough amps, which it sounds like it is well matched to your current battery, which is the main limiting factor.
The heat you feel on the outside of your motor is very well insulated from the actual hot internal components, think feeling the hood of a car in comparison to the engine block.
Search on Statorade, then search more on engine cooling. Make sure you pay very careful attention to the usage cases where these things become necessary.
If you wanted more speed, the options are a faster wind motor, or a higher voltage battery. A 5% increase in voltage will not have a large effect. Using a small fairing or just bending over in tuck position or even zipping up your jacket will likely have more effect.
A stored battery should be at least partially charged every 3-6 months or so. The BMS has a parasitic drain, not on the entire battery, but on just one parallel string, and over a prolonged period of time will totally drain and destroy those cells, making the entire battery a severe fire hazard and requiring cell replacement and a rebuild.
Either get someone to perform a periodic partial charge for you or disconnect the BMS from the battery. Or, get really good fire insurance and some new batteries when you get back.
There are not usually any specific setup changes you can make to a simple controller that will make any significant changes to performance, IF it is able to supply enough amps, which it sounds like it is well matched to your current battery, which is the main limiting factor.
The heat you feel on the outside of your motor is very well insulated from the actual hot internal components, think feeling the hood of a car in comparison to the engine block.
Search on Statorade, then search more on engine cooling. Make sure you pay very careful attention to the usage cases where these things become necessary.
If you wanted more speed, the options are a faster wind motor, or a higher voltage battery. A 5% increase in voltage will not have a large effect. Using a small fairing or just bending over in tuck position or even zipping up your jacket will likely have more effect.
A stored battery should be at least partially charged every 3-6 months or so. The BMS has a parasitic drain, not on the entire battery, but on just one parallel string, and over a prolonged period of time will totally drain and destroy those cells, making the entire battery a severe fire hazard and requiring cell replacement and a rebuild.
Either get someone to perform a periodic partial charge for you or disconnect the BMS from the battery. Or, get really good fire insurance and some new batteries when you get back.