Search found 2118 matches

by E-HP
May 05 2021 10:47pm
Forum: EBike Technical
Topic: Do some motors have more/less torque with the same power levels?
Replies: 17
Views: 400

Re: Do some motors have more/less torque with the same power levels?

I'm shopping for a new motor and I'm quite confused on the amount of torque a motor has. In my case, my old motor was a mini cyclone or cyclone 1680w and I'm looking to upgrade to the 3 kw cyclone. I keep hearing that the cyclone 3000 has a lot more torque. If I use the same power motor controller ...
by E-HP
May 05 2021 2:43pm
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 688

Re: Welding down a torque arm

RTLSHIP wrote:
May 05 2021 6:49am
In reality, buying a decent $1000. integrated bike will eliminate these problems.
Are you talking about an ebike?
by E-HP
May 04 2021 3:47pm
Forum: EBike Troubleshooting
Topic: Installing Pedal Assist Sensor - How far from the sensor should the magnet be?
Replies: 5
Views: 86

Re: Installing Pedal Assist Sensor - How far from the sensor should the magnet be?

They should line up, They should be as close as possible without rubbing together. You photo is useless for diagnosing the problem, since you can't zoom in enough to see what's going on with your PAS. Whoops, I forgot to upload the photo. This is what it looks like - I did bend the bracket a bit so...
by E-HP
May 04 2021 2:31pm
Forum: EBike Troubleshooting
Topic: Installing Pedal Assist Sensor - How far from the sensor should the magnet be?
Replies: 5
Views: 86

Re: Installing Pedal Assist Sensor - How far from the sensor should the magnet be?

I just picked up a MP5 with pedelec along with a 52v Luna battery to replace my borked Tidalforce hub on my Montague Paratrooper. Everything is working right now except for the pedal assist. I'm wondering how far the sensor has to be from the magnets, and if the magnets have to be perfectly centere...
by E-HP
May 04 2021 2:24pm
Forum: EBike Technical
Topic: What is the 3 pin motor connector called? (the sensor cable, and is it compatible with 6 pin version?)
Replies: 6
Views: 154

Re: What is the 3 pin motor connector called? (the sensor cable, and is it compatible with 6 pin version?)

TuomasK wrote:
May 04 2021 2:04pm
Without picture impossible to say for sure but could it be z916 connector?
Maybe the finger that's usually used to take a picture is already busy signaling the lawmakers?
by E-HP
May 03 2021 9:31pm
Forum: EBike General Discussion
Topic: Custom fiberglass / carbon frame battery case
Replies: 8
Views: 378

Re: Custom fiberglass / carbon frame battery case

A lot of epoxies are fortified with metal (steel, silver, copper, etc.) in order to provide greater strength (doesn't compress/deform), but that also makes them conductive. I know of no metal filled thermal or structural epoxies that are conductive. Even silver filled thermal paste is generally not...
by E-HP
May 03 2021 9:23pm
Forum: EBike General Discussion
Topic: Help with choosing the right battery for powerful motor
Replies: 15
Views: 303

Re: Help with choosing the right battery for powerful motor

still need help with finding the right battery :( can I go for one that provides 80A output or it's gonna damage my motor? Yes, YOU can damage the motor, but it's up to your throttle hand. I would say it would be difficult to damage it, since I regularly put 60A at 72V into my 1000W 9C clone and ov...
by E-HP
May 03 2021 9:08pm
Forum: EBike Troubleshooting
Topic: Bike wont power on unless battery indicator is pressed
Replies: 2
Views: 60

Re: Bike wont power on unless battery indicator is pressed

Hi, I have a new battery for my ebike, I have fully charged the battery but it wont supply power to the bike unless i press the battery inicator on the battery (the power stops once the indicator light goes out 10 sec or so). The old battery works like it should. Any ideas? Have checked the fuses. ...
by E-HP
May 03 2021 8:38am
Forum: EBike General Discussion
Topic: Custom fiberglass / carbon frame battery case
Replies: 8
Views: 378

Re: Custom fiberglass / carbon frame battery case

Tomblarom wrote:
May 03 2021 8:28am
Going to try epoxy.
Just make sure the epoxy you are using isn't conductive, if you're using for your battery pack. A lot of epoxies are fortified with metal (steel, silver, copper, etc.) in order to provide greater strength (doesn't compress/deform), but that also makes them conductive.
by E-HP
May 03 2021 8:21am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 688

Re: Welding down a torque arm

can you show me a pic of that? Can you post a pic of your frame's dropouts? yes, but but it will take a day or so, as camera is at work and bike is at home. By the way the fork drop outs are 1/8" thickness not 1/4" I misspoke. That's pretty thin, but I'm more interested in how flat the ar...
by E-HP
May 03 2021 8:18am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 688

Re: Welding down a torque arm

I even use a torque arm with filled in steel strapping and no luck.1 or 2 pcs of strap. troque arm.JPG If you use shims, they should be placed on the flats, not the curved sections. I use a shim with my Grin torque arm to make it a near press fit. I use a piece of razor blade broken off to be the s...
by E-HP
May 03 2021 1:12am
Forum: EBike Technical
Topic: Regenerative braking help?
Replies: 9
Views: 238

Re: Regenerative braking help?

If you have no ebrake wires from the controller either as a pair for a switch for on/off braking or as a triple for a second throttle for variable braking force, then the only other way it could work is "slip regen", where when you roll off the throttle (rather than letting it go complete...
by E-HP
May 03 2021 12:55am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 688

Re: Welding down a torque arm

RTLSHIP wrote:
May 02 2021 3:52pm
can you show me a pic of that?
Can you post a pic of your frame's dropouts?
by E-HP
May 03 2021 12:51am
Forum: EBike General Discussion
Topic: Help with choosing the right battery for powerful motor
Replies: 15
Views: 303

Re: Help with choosing the right battery for powerful motor

still need help with finding the right battery :( can I go for one that provides 80A output or it's gonna damage my motor? Yes, YOU can damage the motor, but it's up to your throttle hand. I would say it would be difficult to damage it, since I regularly put 60A at 72V into my 1000W 9C clone and ov...
by E-HP
May 03 2021 12:41am
Forum: EBike General Discussion
Topic: DIY Newb FAQ?
Replies: 4
Views: 174

Re: DIY Newb FAQ?

Lots more points to consider. This work could quickly become overwhelming. Need to find a competent editor who can compile the info efficiently and whip it into shape in a format that (as you importantly noted) translates well. Thanks. I think I'll try updating the first post, by editing it, and as...
by E-HP
May 02 2021 1:52pm
Forum: EBike Technical
Topic: Lipo Charging from 14S pack?
Replies: 0
Views: 46

Lipo Charging from 14S pack?

Looking for uses for my old 14S8P triangle pack (generic cells), since it still has plenty of life left. I've been looking to upgrade my lipo charger, which would entail upgrading my AC-DC Mean Well power supply. Unfortunately, my current power supply doesn't support parallel operation, so I just ne...
by E-HP
May 02 2021 1:40pm
Forum: EBike General Discussion
Topic: Help with choosing the right battery for powerful motor
Replies: 15
Views: 303

Re: Help with choosing the right battery for powerful motor

My motor is the 3.5T 3000-5000W QS Motor, the input Voltage Range for it is 48V/60V/72V, MAX DC current: 100A Max Phase current: 250A That's interesting. I haven't seen BLDC motor specs that included a spec for MAX DC current. Most of the time that I see that used, it's relates to the maximum batte...
by E-HP
May 02 2021 1:08pm
Forum: EBike General Discussion
Topic: Help with choosing the right battery for powerful motor
Replies: 15
Views: 303

Re: Help with choosing the right battery for powerful motor

My motor is the 3.5T 3000-5000W QS Motor, the input Voltage Range for it is 48V/60V/72V, MAX DC current: 100A Max Phase current: 250A That's interesting. I haven't seen BLDC motor specs that included a spec for MAX DC current. Most of the time that I see that used, it's relates to the maximum batte...
by E-HP
May 02 2021 11:14am
Forum: EBike Technical
Topic: Killed 2 bafang SWX02 motors. Yes, two!!!
Replies: 32
Views: 634

Re: Killed 2 bafang SWX02 motors. Yes, two!!!

ha ha very good question! to the best of my (limited) abilities, i wired together the motor, battery, controller and throttle. tested multiple times with a multimeter and got what i think were appropriate readings. and, yes, i jumped the on/off switch wires for the test. when i didn't get any posit...
by E-HP
May 02 2021 11:11am
Forum: EBike Technical
Topic: 48v Battery with 60v e-motor.
Replies: 2
Views: 97

Re: 48v Battery with 60v e-motor.

Roughly 20% slower top speed.
by E-HP
May 02 2021 11:03am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 688

Re: Welding down a torque arm

RTLSHIP wrote:
Apr 29 2021 9:20am
I have a steel bike frame but prefer to weld torque arm right on axle itself.
If you have a steel frame, then why not just beef up your dropouts with 1/4" steel plates? No torque arm required.
by E-HP
May 02 2021 10:31am
Forum: EScooters/EMotorcycles
Topic: Build
Replies: 18
Views: 330

Re: Help me!!!

I have a crf 250 can someone guide me to what controller,motor and batteries I could use I'm going to predict that it will be difficult to get advice with the shotgun strategy. Your four threads with the same subject will just confuse everything. I don't think it breaks the forum rules directly, al...
by E-HP
May 02 2021 10:21am
Forum: EBike Technical
Topic: Killed 2 bafang SWX02 motors. Yes, two!!!
Replies: 32
Views: 634

Re: Killed 2 bafang SWX02 motors. Yes, two!!!

3/ before placing China order, did have an amazon order in for a sensor/sensorless controller and throttle. got it and decided to see what happened, figuring the amp difference alluded to in previous posts couldn't hurt things as long as i didn't put any weight on the wheel. in any event, after hoo...
by E-HP
May 02 2021 9:53am
Forum: Vendor Relations Corner
Topic: Trying to buy a PowerVelocity Controller
Replies: 13
Views: 278

Re: Trying to buy a PowerVelocity Controller

You're probably ordering the wrong controller. My observation, yours may vary, is that the fastest responses appear to be to questions related to the latest and greatest "next-gen" controller PS. Others have mentioned that being very persistent may help, so you may need to just keep posti...