Recent content by EV_Ron

Is your motor still grinding at high speed? Have you checked all you wires and connectors like other experienced people suggested? First, my motor's problem was very different than yours. Mine started with a clutch completely slipping, and the solution there is to literally hit the tire...

What display are you using? I'm using an SW900, (a version with P14 current control locked out/unusable from the factory). When settings are 26" wheel and 20 motor magnets the display reads 4x high at 30-32 mph yet I'm only doing 7-8 mph. Ebikeling lists 20 magnets, and I opened the motor and...

Disassembled motor a third time. Interesting to note that, unlike the first time when I just took the motor/clutch combo out, and the 2d disassembly when I decided to intentionally force the clutch off the shaft with pry bar and hammer, this time the clutch and gear assembly simply dropped off...

Thanks for your response. I have the 500W motor and need the 88m clutch with 47.5mm gears. But, same seller TopBikeKit, who also sells on eBay. Did you attempt to use ebikeling's warranty? Don't think you hijacked at all...trying to troubleshoot and find parts. No schematics. Will I need them...

Assembly/reassembly/testing Having found that this seller's top notch customer support is woeful at best, I searched longer and found that the Bafang SWXO2/G060 clutch assembly comprises the 88 mm clutch w/ 48mm/13.5mm gears. So it's the same as used on this 500 W motor. $42 free shipping, 2...

Son of a gun, they round up. 88mm clutch. https://m.aliexpress.com/item/32953566014.html?spm=a2g0n.productlist.0.0.5a98FCVuFCVudy&browser_id=04ca1be3004740c089db6b268d839171&aff_trace_key=&aff_platform=msite&m_page_id=cbuegkqw8zwcaaw41800026f8a82537552a29efd06&gclid= After all that. Also found...

Hello endless sphere, I bought a brand new, 500W rear hub motor this past December (still in warranty) from a well known seller in the U.S.. The problem is, after 40-50 miles, the hub case and wheel stopped turning, but I can hear the internals ("rotor"/"stator"?) spin. The seller tech...

Investigating and trying to help myself and the community understand the market and what seems to be the specific reason why 1 line of controllers doesn't communicate with a line of displays is useless speculation? Yours is a disappointing response from someone with a 1GW rating. It's no yuan...

aroundcube You may believe what you see- if that means there's KT controllers on one hand and everything else like the SW900 on the other, I understand, it's ok. What I see is this: Greenpedel (which appears to be a very large consolidator & seller of ebikes & kits) advertises KT displays on...

Never know, if I could figure it out and import a few ten thousand, everyone might be buying their next controllers from me :). JK. I get your sarcasm.

I may be wrong! On the KT LCD list, they do not show S830 nor SW900. http://www.szktdz.com/en/news.php?type=343 Hmmm ShuWei, SaiWes?, SwaiWalu?, SunWeng? :)

But...the SW900 is a KT P1-16 display. Ebikeling is just a reseller, just like BMSBatt, Bafang, Pedelecs.... The SW900 should work with the KT controller (unless it's an older P1-5 controller; then we're back to simple parameter numbering system update.) e.g. this kit specs either: "KT LCD3 and...

Great learning opportunity, Comrade. The Irish guy in the video I linked did say about the resistor, "it's probably just a cheap and reliable way of dropping the voltage to the voltage regulators." You validated and clarified his assumption. Thanks for filling in the holes! Happy New Year.

Ahhh: one of Albert van Dalen's improvements: "Redusing (sic) the LM78L05 dissipation: The 5V current consumption is 50mA, which leads to a LM78L05 dissipation of 0.44W, this is close to the allowed maximum. There are known cases where the overheating of the LM78L05 caused failures. By mounting...

Oh, the LM317T goes to the 100Ω resistor then to U2. What's U2? A great rock band? U2 is another VR, the 78L05, which sources 5V, 50mA. But why? The Irish guy says maybe it's to drop to 5V to provide the volttage regulators and provide for lights. Guess I'll never be an EE.