9c 48v 35amp How much Umph?
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bionx 1954
100 W
Hi 48V@35A will give you around 1700 watts which is a good amount of power (around 2+ HP). So standing starts with out pedalling show be OK with good acceleration.I have a 9c with similar power . It is adequate, for cruising and climbing most hills.
Sunder
10 MW
It will depend on the windings, but that's a fair bit of power.
I'm running 44v @ 30a or so, and it accelerates far faster than I could on a carbon fibre road bike. I easily keep up with cars that are gunning it a bit until the top speed of high 40km/h. Not like a WRX or a V8 or anything, but you'd keep up with a 4 banger who is accelerating hard easily.
I'm running 44v @ 30a or so, and it accelerates far faster than I could on a carbon fibre road bike. I easily keep up with cars that are gunning it a bit until the top speed of high 40km/h. Not like a WRX or a V8 or anything, but you'd keep up with a 4 banger who is accelerating hard easily.
Gregory
100 kW
Umph and acceptable is too subjective! But you won't have to pedal to take off. I'd consider 1700W medium power.
If the battery is strong and doesn't sag you should get a sprightly but not fast acceleration at wide open throttle (WOT). If the battery isn't able to hold >35A for a few seconds and voltage sags you will be slower (as well as shortening the life of the cells).
Acceleration is fastest when fully charged and slower when the battery is nearly empty (obviously).
Get a watt meter, they're great to learn what's happening with your power at WOT take off, up hills etc, as well as knowing when your battery is almost drained.
If the battery is strong and doesn't sag you should get a sprightly but not fast acceleration at wide open throttle (WOT). If the battery isn't able to hold >35A for a few seconds and voltage sags you will be slower (as well as shortening the life of the cells).
Acceleration is fastest when fully charged and slower when the battery is nearly empty (obviously).
Get a watt meter, they're great to learn what's happening with your power at WOT take off, up hills etc, as well as knowing when your battery is almost drained.
friendly1uk
1 MW
A geared motor might provide 25% more, but go 10% slower. Though continued use at that power in hot climates would be a bit much, The 4kg weight would be nippy in a 'round town' situation where bursts of power are used, not continuous high power usage.
dogman dan
1 PW
Nope, you won't need to pedal to get going, no matter what your winding is.
Plenty of power for steep hills and starts, even with the faster windings.
Uphill starts will still be a place to pedal some to get going, it is after all, only a modest size magnet motor. Especially if you are heavy, you may have some sluggishness if the hill is steep and you are stopped.
Adding more power to this size motor is not particularly good, but 2000w will fly if you want to up the amps to 48v 40 amps.
Plenty of power for steep hills and starts, even with the faster windings.
Uphill starts will still be a place to pedal some to get going, it is after all, only a modest size magnet motor. Especially if you are heavy, you may have some sluggishness if the hill is steep and you are stopped.
Adding more power to this size motor is not particularly good, but 2000w will fly if you want to up the amps to 48v 40 amps.
ok well I live in Houston, so it does get hot in the summer. It's actaully the Q11 (9c clone) paired with s12sh sine wave 35amp controller so it will probably have slightly less performance than a real 9c. Were you saying a geared or direct drive will have issues in heat? I considered a geared motor, but wanted the speed. The speed is probably less important than I think. Would I get more range with a geared motor?
dnmun
1 PW
no. if it is a 9C clone then it will be essentially the same performance. they make them all like that, in the millions. you do not need geared since it is so flat. but do not use throttle to hold a bike in position on a grade. use brakes. holding throttle on without the wheel moving can burn the hiside mosfet up.
