Search found 4507 matches

by cwah
Apr 22, 2018 3:45 pm
Forum: Resources & EV Related Parts and Services
Topic: Duyunov wheel-hub motor
Replies: 18
Views: 1127

Re: Duyunov wheel-hub motor

Why can't we buy if it's so much better?
by cwah
Apr 20, 2018 3:33 pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1095
Views: 147793

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Would adding Bluetooth be in plan? The controller isnt always accessible so when needing to configure I have to unscrew lots of things.

Would be much better with 1 less cable
by cwah
Apr 20, 2018 6:58 am
Forum: Items Wanted
Topic: Pinch torque arm
Replies: 7
Views: 277

Re: Pinch torque arm

I decided to make my own as getting 2 drilled and shipped would have cost me over $100!
https://endless-sphere.com/forums/viewt ... =3&t=93849
by cwah
Apr 20, 2018 6:55 am
Forum: E-Bike Technical
Topic: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers
Replies: 120
Views: 3347

Re: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers

Waiting for a good regen torque arm to come to the market! Until then I make my own
https://endless-sphere.com/forums/viewt ... =3&t=93849
by cwah
Apr 20, 2018 6:54 am
Forum: E-Bike General Discussion
Topic: Regen torque arm
Replies: 3
Views: 121

Regen torque arm

I've finally made my torque arm for regen! https://photos-3.dropbox.com/t/2/AABY7fa9lCYCqTeF9of3w3w5vnUZii9uZBrA2viHo64D7w/12/5905557/jpeg/32x32/3/1524240000/0/2/IMG_20180420_000315.jpg/EOfJtAQY2N0bIAcoBw/0LT2BbKMD5evEgrFTVL1_wgDxcE3Pp0YDNJIX9JsCG0%2Csqjgbot32MI-kJyGwL8SavgIFM_qwOy3sVWW9glrD3c?dl=0&...
by cwah
Apr 18, 2018 11:27 pm
Forum: EV Business World
Topic: ES Investors Club
Replies: 258
Views: 33715

Re: ES Investors Club

What investment did you earn on?
by cwah
Apr 17, 2018 2:44 am
Forum: Items Wanted
Topic: Pinch torque arm
Replies: 7
Views: 277

Re: Pinch torque arm

The grin V2 torque arm isn't pinch and not good for motors with regen Works great, one installed as designed and one reversed. Running for 3 years. 2500 miles. Just a 1000W MXUS at 52V 25A buttoning regen. How do you do that? I have 2 torque arm mounted reverse to each other and there are still wig...
by cwah
Apr 16, 2018 6:48 pm
Forum: Items Wanted
Topic: Pinch torque arm
Replies: 7
Views: 277

Re: Pinch torque arm

tomjasz wrote:
Mar 22, 2018 2:18 am
cwah wrote:
Mar 21, 2018 7:25 pm
I need torque arm with minimum play. Pinch torque arm would be good. Anyone sell these?
Just Grin V2 here.
The grin V2 torque arm isn't pinch and not good for motors with regen
by cwah
Apr 13, 2018 4:31 am
Forum: E-Bike Photos & Video
Topic: Single-speed track stealth ultralight
Replies: 187
Views: 7766

Re: Single-speed track stealth ultralight

I may get the q100h instead. I can't bear the noise of a motor. I used the q100h before it was decently quiet on sine wave
by cwah
Apr 11, 2018 1:41 pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1315
Views: 135864

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Thanks. Looks like efficiency didn't increase with the new hub
by cwah
Apr 11, 2018 7:04 am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1315
Views: 135864

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Dumsterdave wrote:
Apr 11, 2018 6:04 am
Anyone have experience work the "new 2018" hub?
Link?
by cwah
Apr 10, 2018 5:53 pm
Forum: E-Bike Photos & Video
Topic: Single-speed track stealth ultralight
Replies: 187
Views: 7766

Re: Single-speed track stealth ultralight

Thanks looking forward for news. I'm considering getting one but I'm afraid of noise! I like the silence of direct drive and you mentioned it's louder than the bbs02 and the cute100h
by cwah
Apr 09, 2018 7:23 pm
Forum: E-Bike Photos & Video
Topic: Single-speed track stealth ultralight
Replies: 187
Views: 7766

Re: Single-speed track stealth ultralight

how did you count the number of pole?

I'm quite impressed by what you said. at the say time, having killed so many geared motor I'd be keen to hear what will happen in the next 3 months. Clutch never broke within the first week or month, but after a longer period of time.
by cwah
Apr 09, 2018 5:53 pm
Forum: E-Bike Photos & Video
Topic: Single-speed track stealth ultralight
Replies: 187
Views: 7766

Re: Single-speed track stealth ultralight

How many watts are you pulling on this motor? I m interested to know by when the clutch will fail :p
by cwah
Apr 08, 2018 10:55 pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1095
Views: 147793

Re: Compact Field Oriented Controller, ASI + Grin, limited run

That's a good idea to have both geared and DD. Maybe something I shall consider! Although I'm dreadful of punctures once I put a motor they tend to gather that!

I also heard that 2wd increase efficiency! So even better
by cwah
Apr 08, 2018 8:08 pm
Forum: Items for Sale - Used
Topic: A123 18650 for sale
Replies: 17
Views: 889

Re: A123 18650 for sale

How much would shipping cost to UK? What's the typical capacity (wh) in the cell you got?
by cwah
Apr 08, 2018 7:22 am
Forum: E-Bike Technical
Topic: Lightest DD motor?
Replies: 13
Views: 430

Re: Lightest DD motor?

The Crystalyte NSM motor is only 2.7kg, http://www.ebikes.ca/shop/electric-bicycle-parts/motors/msnm15.html http://www.ebikes.ca/media/catalog/product/m/n/mnsm15.jpg In a 16" rim it's OK but laced into a 26" bike wheel most people would find the performance underwhelming, and the efficiency at high...
by cwah
Apr 08, 2018 7:10 am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1095
Views: 147793

Re: Compact Field Oriented Controller, ASI + Grin, limited run

One way to use the limits in the controller is to set the maximum values that you would ever want to use with the battery and motor you have. For example the battery might have a 30 amp limit in the BMS that you don't really want to exceed, or perhaps it has a 50 amp peak rating so you might be wil...
by cwah
Apr 08, 2018 7:09 am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1095
Views: 147793

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Thanks. I'll put everything to the max then! 96A for max phase current and regen. 6000w for motor max power.

Hopefully the controller work with this without issue
by cwah
Apr 07, 2018 6:02 pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1095
Views: 147793

Re: Compact Field Oriented Controller, ASI + Grin, limited run

What's the max power I can use safely with the phaserunner? Can I use 3000w as max? Can I put 5000w?

I'd like a better acceleration from stand point. Can I put battery power at 96A?
by cwah
Apr 07, 2018 4:23 pm
Forum: E-Bike Technical
Topic: Lightest DD motor?
Replies: 13
Views: 430

Re: Lightest DD motor?

I used to have a small 4.5kg DD motor and acceleration was really rubbish:
http://conhismotor.com/ProductShow.asp?id=93
by cwah
Apr 07, 2018 10:37 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 103
Views: 4499

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

Again, use power to compare Apple to apples... Average voltage of LTO cell is 2.3v. with 31s you have 71v. If you need 100A it means you need 7100w of power. If you were to get ncr18650pf, max discharge is 10A. So if you get a slightly larger battery with 230 cells you can also get 7000W discharge. ...
by cwah
Apr 07, 2018 7:48 am
Forum: E-Bike Technical
Topic: What's wrong with my controller Kelly KLS7230S?
Replies: 2
Views: 120

Re: What's wrong with my controller Kelly KLS7230S?

I need to connect that. Will tell you
by cwah
Apr 07, 2018 7:46 am
Forum: Battery Technology
Topic: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery
Replies: 103
Views: 4499

Re: LTO Lithium Titanium Oxide (Titanate) Battery 30S - Seeking the Ultimate Commuter Battery

There are a few people here in ES with more then 1200 cycle on Lipo batteries. From memory they build there battery pack with much more capacity then actually needed. And was careful charging and draining cells. If you stay away from hard usage, and dont have prolonged WOT sessions that pulls A clo...