Search found 499 matches

by danielrlee
Apr 30 2020 10:36am
Forum: Items for Sale - New
Topic: Heavy Duty Torque Arm - Disc mount, clamping optional $35
Replies: 107
Views: 20749

Re: Heavy Duty Torque Arm - Disc mount, clamping optional $35

Stated in first post:

- Includes flats specifically sized to drill and tap hole for a 30mm M6 bolt (you will need to drill/tap yourself, it it NOT included). See here for pictures of a drilled/tapped part.
by danielrlee
Feb 05 2020 7:51am
Forum: General Discussion
Topic: Forum spell checker???
Replies: 8
Views: 807

Re: Forum spell checker???

I didn't know ES had a spell checker. Are you sure you're not referring to your web browser's native spell checker?
by danielrlee
Jan 14 2020 2:28am
Forum: General Discussion
Topic: Relay for up to 100V DC?
Replies: 15
Views: 1461

Re: Relay for up to 100V DC?

Sure, not reco'ing for you specifically, just pointing out eBay is good for higher quality as well. I've been collecting top notch DC contactors 200A many 500A, for an average of about $15 each. One dud out of a dozen so far, and eBay refunded me in under 48hrs even though the seller tried to state...
by danielrlee
Jan 07 2020 9:05am
Forum: Motor Technology
Topic: Why more KV = more power, the Maximum Power Transfer Theorem
Replies: 51
Views: 4055

Re: Why more KV = more power, the Maximum Power Transfer Theorem

Keep reading the above post a few times and hopefully you'll get the same “eureka” moment. No I had absorbed all that and pretty sure I grokked it. I am in no way saying changing the kV winding does anything for performance **overall**. What I am clear on, is that **in this use case** - DD hub only...
by danielrlee
Jan 07 2020 6:05am
Forum: Motor Technology
Topic: Why more KV = more power, the Maximum Power Transfer Theorem
Replies: 51
Views: 4055

Re: Why more KV = more power, the Maximum Power Transfer Theorem

Wow most excellent 'splaining goin' on there. The key parts of my use case that drives the truth of the "popular misconception being debunked" are no gearing, need for super strong torque at low rpm, and Not giving a fig about inefficiency there, nor any desire for speed, even 15-20mph tops is fine...
by danielrlee
Jan 05 2020 1:39pm
Forum: E-Bike General Discussion
Topic: type 2 connector for an ebike??
Replies: 9
Views: 1305

Re: type 2 connector for an ebike??

Doesn't your type 2 to mains adapter have a manual release switch? I can't say I've ever seen one without one.

Can you post a link to the adapter you purchased?
by danielrlee
Jan 04 2020 11:37am
Forum: E-Bike General Discussion
Topic: Hub drive torque limitations. Steep hills while towing a child?
Replies: 38
Views: 2394

Re: Hub drive torque limitations. Steep hills while towing a child?

*sigh* I'm not interested in getting into an argument over this subject as it's already been discussed in depth on this forum. The following threads make good reading if anyone is interested: Science, Physics, Math, & Myth Try and look past the lengthy and unnecessary first post as the thread was st...
by danielrlee
Jan 04 2020 5:58am
Forum: E-Bike General Discussion
Topic: Hub drive torque limitations. Steep hills while towing a child?
Replies: 38
Views: 2394

Re: Hub drive torque limitations. Steep hills while towing a child?

.....So in reality, there ARE torque and speed windings, and it is not misinformation. That's just incorrect. As individual components, there's nothing to make them 'torque' or 'speed' windings. What you are doing is giving a specific context of a complete system with predefined parameters. It is t...
by danielrlee
Jan 04 2020 4:59am
Forum: E-Bike Technical
Topic: CA3 Display Question
Replies: 6
Views: 530

Re: CA3 Display Question

It's likely that you are shorting the 5V CA supply to ground with an incorrect throttle connection. Verify that the throttle wire connections are correct (they won't be) and swap them around so that they are.
by danielrlee
Jan 04 2020 4:16am
Forum: E-Bike General Discussion
Topic: Hub drive torque limitations. Steep hills while towing a child?
Replies: 38
Views: 2394

Re: Hub drive torque limitations. Steep hills while towing a child?

So much misinformation in this thread. I thought we had gotten past the notion of 'torque' or 'speed' windings.

Differing windings are capable of exactly the same amount of torque per unit of heat generated, they just take different combinations of voltage & current to supply the wattage required.
by danielrlee
Dec 23 2019 2:02am
Forum: E-Bike Technical
Topic: hidden wire brake sensor... ?
Replies: 74
Views: 14009

Re: hidden wire brake sensor... ?

Kirill wrote:How use hidden wire brake sensor(ms-bk-1r) without controller?

I want make brake light.
viewtopic.php?t=75171
by danielrlee
Dec 23 2019 2:00am
Forum: E-Bike Technical
Topic: hidden wire brake sensor... ?
Replies: 74
Views: 14009

Re: hidden wire brake sensor... ?

dsami wrote:Can I use it as a gear sensor for Bafang mid drive?
I think it has the same concept as http://gearsensor.com/ has and much cheaper ...
No. The brake sensor only detects movement in a single direction. The gear sensor detects movement in both directions.
by danielrlee
Dec 05 2019 10:09am
Forum: E-Bike General Discussion
Topic: Regen
Replies: 41
Views: 2319

Re: Regen


Putting the fact that it's a bad idea aside for a moment, if you're only planning on using the second motor for regen while coasting, why not just use the existing motor?
by danielrlee
Nov 24 2019 12:41pm
Forum: E-Bike General Discussion
Topic: type 2 connector for an ebike??
Replies: 9
Views: 1305

Re: type 2 connector for an ebike??

Do tell me more. I’ve seen type 2 plugs with a 13 amp uk socket. Although wonder if there be more to this than that what appears simplistic? If someone could crack this open be just awesome. That's all you need, along with your regular battery charger. I noted that most of the ready made cables hav...
by danielrlee
Nov 22 2019 11:10am
Forum: E-Bike General Discussion
Topic: type 2 connector for an ebike??
Replies: 9
Views: 1305

Re: type 2 connector for an ebike??

Bg-electric-cycle wrote:
Nov 22 2019 10:56am
Do tell me more. I’ve seen type 2 plugs with a 13 amp uk socket. Although wonder if there be more to this than that what appears simplistic?

If someone could crack this open be just awesome.
That's all you need, along with your regular battery charger.
by danielrlee
Nov 20 2019 3:00am
Forum: E-Bike Non-hub Motor Drives
Topic: higher or lower kv
Replies: 110
Views: 12726

Re: higher or lower kv

Not quite. Assuming both motors have the same copper fill.... You're forgetting the fact that if you also proportionally reduce the voltage supplied to the higher kV motor at the same time as increasing the current, you get the same heat generated while producing the same torque from the same watta...
by danielrlee
Nov 20 2019 2:22am
Forum: E-Bike Non-hub Motor Drives
Topic: higher or lower kv
Replies: 110
Views: 12726

Re: higher or lower kv

Large reduction off course gives torque. With a low kV it will be very slow buth the high or low kV is not making a difference if you match the rest of the system to it given the same power. It's a common misconception. See this for explanation: https://endless-sphere.com/forums/viewtopic.php?f=30&...
by danielrlee
Nov 15 2019 11:33am
Forum: E-Bike General Discussion
Topic: Assistance with Rear Hub Motor, Speed Control and Battery Selection for a High Speed World Record Attempt Ebike
Replies: 11
Views: 676

Re: Assistance with Rear Hub Motor, Speed Control and Battery Selection for a High Speed World Record Attempt Ebike

Hi again Andy. How long is the wheelbase of the frame in question? I'm willing to bet you'll have to double it to make the bike stable at those sort of speeds.
by danielrlee
Oct 30 2019 8:19am
Forum: E-Bike General Discussion
Topic: Opportunity Charging in the UK
Replies: 38
Views: 4024

Re: Opportunity Charging in the UK

You also need a way of shutting off the control signal for times when the charging point refuses to release your adapter. A keyswitch is probably best. A momentary button will also suffice if you don't need the adapter to remain secure when plugged in. TBH, I'd just buy this ready made one instead: ...
by danielrlee
Oct 02 2019 4:21am
Forum: E-Bike Technical
Topic: PAS Wiring - Please can you guys help me out?
Replies: 13
Views: 834

Re: PAS Wiring - Please can you guys help me out?

No. PAS and throttle output two different types of signal that are incompatible with each other and require their own dedicated controller input. Thanks so much, then I need to change the whole controller. Please suggest me a controller with PAS & Regenerative braking. Which battery and motor do yo...
by danielrlee
Oct 01 2019 8:13am
Forum: E-Bike Technical
Topic: PAS Wiring - Please can you guys help me out?
Replies: 13
Views: 834

Re: PAS Wiring - Please can you guys help me out?

My controller doesn't have a PAS sensor port. is there any way I can club it with Throttle connection ? without throttle only pedaling will run the motor ? No. PAS and throttle output two different types of signal that are incompatible with each other and require their own dedicated controller inpu...
by danielrlee
Oct 01 2019 6:48am
Forum: E-Bike Technical
Topic: PAS Wiring - Please can you guys help me out?
Replies: 13
Views: 834

Re: PAS Wiring - Please can you guys help me out?

My controller doesn't have a PAS sensor port. is there any way I can club it with Throttle connection ? without throttle only pedaling will run the motor ? No. PAS and throttle output two different types of signal that are incompatible with each other and require their own dedicated controller input.
by danielrlee
Sep 25 2019 7:16am
Forum: E-Bike Technical
Topic: PAS Wiring - Please can you guys help me out?
Replies: 13
Views: 834

Re: PAS Wiring - Please can you guys help me out?

Although not 100% guaranteed, convention suggests the following wiring pinout:

Black - Ground (cathode)
Red - 5V (power supply)
Yellow - Signal
by danielrlee
Sep 02 2019 9:10am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Replacing Hall Sensors
Replies: 15
Views: 4059

Re: Replacing Hall Sensors

Hey, just ordered these after reading this thread.... ILamourCar 20Pcs A3144 A3144E OH3144E Hall Effect Sensor Via Amazon. Just to make sure; these will work on most eacooters right? These are not the correct sensors for use inside a brushless motor (they are unipolar, where you require bipolar sen...