Noob Torque question

[bigbobwolves]

hi, what effects torque is it the watts of the motor or the amps of the battery? i own THIS i could use more power up hills please

 

[D8ve]

Watts is how many amps times voltage.
Batteries have a rated storage yours is 8.8 amp hours.
It should be able to supply 15amps for half an hour then the battery is empty.
If you do get greater current draw then the battery won't even last that long.
A bigger battery will give improved range for the same power.
Upping the current risks burning the motor out as well.
You have issues but pedalling is simplest way to improve performance.
Despite my health issues I've been able to average over 20kph without any assistance. Add the battery and it's over 30kph

 

[bigbobwolves]

Watts is how many amps times voltage.
Batteries have a rated storage yours is 8.8 amp hours.
It should be able to supply 15amps for half an hour then the battery is empty.
If you do get greater current draw then the battery won't even last that long.
A bigger battery will give improved range for the same power.
Upping the current risks burning the motor out as well.
You have issues but pedalling is simplest way to improve performance.
Despite my health issues I've been able to average over 20kph without any assistance. Add the battery and it's over 30kph

not sure where i would get a higher power battery for my bike, did wonder about having 2 more of these battery's wired from saddle bags, if i do it wright i sould have 3x8.8 , but if i do it wrong i get 3x36 volts and a bang

 

[Deleted member 4366]

In the case of your bike, there's very little that can easily be done to increase the torque because the controller is in that compartment at the bottom of the battery and they're normally potted in silicone, so you can't change anything.

You have two options, basically:
1. Get your rear wheel rebuilt into a 24" rim, which will give you nearly 10% more torque. That would be a good solution if you're a small guy.
2. Get a new motor with a lower winding speed (max rpm). 185 rpm would be ideal, but anything up to 201 rpm. Do you know how fast the wheel spins (MPH) when off the ground?

This will do the job nicely, but it'll cost about £300 by the time you've paid for shipping and duty. You get a nice LCD with 5 levels of assist and everything you need. It uses the standard 9-pin motor connector, so check which one you have first:

https://bmsbattery.com/ebike-battery/784-48v116ah-case-08-bottle-panasonic-battery-pack-battery.html

 

[bigbobwolves]

i have looked at ebay there are some 1500w bikes complete for £900 for off road use, these are tempting, but no after sales and its a lot to risk, so unless i find local ebike builder i may have to stick with what i have,

 

[anotherkiwi]

i have looked at ebay there are some 1500w bikes complete for £900 for off road use, these are tempting, but no after sales and its a lot to risk, so unless i find local ebike builder i may have to stick with what i have,

Those are direct drive motors, geared hub is better on hills.

 

[bigbobwolves]

Those are direct drive motors, geared hub is better on hills.

i know the mid drive have more torque, but all the you tube vids I watch they make clonking noise when you change gear, plus they are more expensive,need local bike shop of ebike builder near wolves. thx

 

[bigbobwolves]

In the case of your bike, there's very little that can easily be done to increase the torque because the controller is in that compartment at the bottom of the battery and they're normally potted in silicone, so you can't change anything.

You have two options, basically:
1. Get your rear wheel rebuilt into a 24" rim, which will give you nearly 10% more torque. That would be a good solution if you're a small guy.
2. Get a new motor with a lower winding speed (max rpm). 185 rpm would be ideal, but anything up to 201 rpm. Do you know how fast the wheel spins (MPH) when off the ground?

This will do the job nicely, but it'll cost about £300 by the time you've paid for shipping and duty. You get a nice LCD with 5 levels of assist and everything you need. It uses the standard 9-pin motor connector, so check which one you have first:

https://bmsbattery.com/ebike-battery/784-48v116ah-case-08-bottle-panasonic-battery-pack-battery.html

thx, I need a local ebike builder I think

 

[D8ve]

i know the mid drive have more torque, but all the you tube vids I watch they make clonking noise when you change gear, plus they are more expensive,need local bike shop of ebike builder near wolves. thx

You get geared hub drives. The stuff sold by woosh whisper etc use them. You even get two speed hub drives D8veh has come up iron bridge on one.
The direct drives tend to burst into flames trying that.

 

[bigbobwolves]

You get geared hub drives. The stuff sold by woosh whisper etc use them. You even get two speed hub drives D8veh has come up iron bridge on one.
The direct drives tend to burst into flames trying that.

I will be looking into mid drive bikes, if I can get one from shop at the right price

 

[D8ve]

Geared hub is not mid drive.

Mid drive is good too though.

 

[Trevormonty]

i know the mid drive have more torque, but all the you tube vids I watch they make clonking noise when you change gear, plus they are more expensive,need local bike shop of ebike builder near wolves. thx

Gear changing on factory mid drives is not really an issue. Just back off while you change, doesn't take long to get hang of. In case of kit Bafang mid drives, there are kits that detect gear change and reduce power to motor. They use a sensor on gear change cable.

NB Bosch drives also support this feature but not all ebike manufactures implement it.