What range are you getting with your setup?

[steveo]

I'm still in the midest of deciding how to do my pack.
So far i'd like to do 100v 5p & 30s. I don't know what range i'm looking at.
I will be using a 5304 motor & a 100v modified x-lite controller with 4110 mosfets
My weight is about 180lbs
My bike will probably be about hmmmm

10lbs - (max for bike i think its less)
25lbs - motor
180lbs - rider
35lbs est. batteries 5p 30s Dewalt a123s (I'm hoping to get minimum 10ah out of each string)

Thanks
Steve

 

[giveahoot]

I noticed a nice increase in range by upgrading my last controller to the IRFB4110. They had half the rds(on) of the previous mosfets, less switching losses/input capacitance/gate charge. Though I believe increasing range is predominately a byproduct of adding Ah, and increasing power/acceleration you add V.

 

[Toorbough ULL-Zeveigh]

Others with direct experience on the 4110 can more accurately say how close you can shave the max voltage.
But speaking generally of any electronic component & semis in particular you absolutely must leave some voltage headroom to remain in the Fet's safe-operating-area allowing for voltage spikes & changes in operating temp.
I think if you paste the voltage to the ceiling you'll be living on borrowed time until the Fets blow out on you.

 

[steveo]

Awsome ... thanks for the input guys ... i have the 4110's ..

Range

setup

anyone ?

 

[Drunkskunk]

100 volts nominal could be 115V peak or more. I'd expect the CLyte controler to fry soon at that range, even with 4110s.


I run a 74V setup, meaning 84.4V peak with my Lipos. its a 600 watt system, and I get 20 miles at full speed on the 4012, averaging 20mph.

 

[steveo]

Maybe you guys are right.. i have a 150v controller .. but i've been hesitant to use it as per i know it has a heat issue...

Is there any mosfets out there rated at 150 rate then are better then the mosfets showin in my second build sig..

-steveo

 

[curious]

The range would greatly depend on terrain, to such extent that comparison disregarding terrain factor is not very meaningful. Hence it only makes sense to compare range on nearly flat routes.

 

[Drunkskunk]

Maybe you guys are right.. i have a 150v controller .. but i've been hesitant to use it as per i know it has a heat issue...

Is there any mosfets out there rated at 150 rate then are better then the mosfets showin in my second build sig..

-steveo

a 100v peak system will have 150 volts at the FETs because of the back EMF, so at 100V, you're already at the maximum.

 

[steveo]

really :S

 

[vanilla ice]

I've gone 20 miles with 12a 36v (7? real amps) of cheap lead, with plenty of pedaling.

 

[paultrafalgar]

The range would greatly depend on terrain, to such extent that comparison disregarding terrain factor is not very meaningful. Hence it only makes sense to compare range on nearly flat routes.

If I was good at algebra (which I'm not) I reckon I could knock up a formula which would relate a known watt-hours per mile for my bike (to be found by observing Cycle Analyst - which I don't have) on the flat (when there was no wind) and add a factor for lifting my weight (known) and that of my bike (known) up X feet (known for a particular journey as Fugawi tells me the overall lift of that journey). Then I could predict the battery charge that I would need for that journey (watt-hours). Anyone good at math(s)? Then we could compare efficiencies of our setups

 

[Johnbear]

Awsome ... thanks for the input guys ... i have the 4110's ..

Range

setup

anyone ?

Range 36v 20amp controller 406 motor at 35kph is around 30km with a 36v 15ah lifepo4 pack no pedaling.

Moderate pedaling and not using the throttle downhill 50-60km.

Heavy pedaling - longer than I comfortably be on a bike - over 70km

Bike - Norco Mountaineer weighs around 30lbs, battery 12 lbs, motor 15lbs. 57lbs total.