Search found 3851 matches

by Kingfish
Jul 24, 2017 11:53 pm
Forum: Motor Technology
Topic: RUST: DIY Hub Motor Repair & Restoration
Replies: 81
Views: 22563

Re: RUST: DIY Hub Motor Repair & Restoration

Greetings ES peoples - Gosh, it’s been 5 years since the repair, and I’m here to report that’s about how long it lasts. Yes, it’s been 5 epic years and 10,000 miles before the RWD blew out the bearings last week. It started as a vibration, a slight flutter, like I was riding over a well-worn road, b...
by Kingfish
Sep 23, 2016 8:46 pm
Forum: Battery Technology
Topic: Tuning a 36V/4A Charger: HP8204L3
Replies: 26
Views: 7693

Re: Tuning a 36V/4A Charger: HP8204L3

Hello iA - This is an old thread for sure. I just happened to have that charger right next to me for a completely different use. I took the bezels off both ends to evaluate, and I concur - the PCB is firmly emplaced. The unit appears to be a one-way construction with no plan to service it. In the po...
by Kingfish
Apr 15, 2016 10:33 pm
Forum: E-Bike Technical
Topic: 6-FET, WZK-713C controller, Zhongtian
Replies: 4
Views: 490

Re: 6-FET, WZK-713C controller, Zhongtian

Hi Pancho – Oye, ¿cómo va? Thanks for the Schematics amigo! Searching Google on "xc866 controller MBC", I found an Infinion Spec Sheet: "8-Bit SAA-XC866". MBC means "Monitor & BootStrap Loader Control" and is on Pin-1. The MCU Reset is on Pin-38. Confirmed on my schematic that XC does connect to Pha...
by Kingfish
Apr 14, 2016 10:49 pm
Forum: E-Bike Technical
Topic: 6-FET, WZK-713C controller, Zhongtian
Replies: 4
Views: 490

Re: Infineon 6FET EB777 25A Review

Hi Pancho – Apologies for the late reply; I was busy last night doing what I do – write code. But now I’m here for you. Trivia about the PCB: The FET: http://www.irf.com/part/75V-Single-N-Channel-HEXFET-Power-MOSFET-in-a-TO-220AB-package/_/A~IRFB3607 RDS(on) = 9 mOhms!! 75V limit. 140W (via Digikey)...
by Kingfish
Apr 13, 2016 6:59 am
Forum: E-Bike Technical
Topic: 6-FET, WZK-713C controller, Zhongtian
Replies: 4
Views: 490

Re: Infineon 6FET EB777 25A Review

Hi Pancho – It is an old thread! :) Could you take a nice clear picture of both sides of the PCB please? I can try to answer some of these: 1. Unsure; picture is worth a 1000 words 2. Correct on my schematic. 3. Unsure, other than monitoring Phase C. 4. EBS = Electric Brake Switch. Typically this is...
by Kingfish
Oct 30, 2015 12:16 pm
Forum: Battery Technology
Topic: How-To: Meanwell 63-84V CV/CC Charger
Replies: 63
Views: 23520

Re: How-To: Meanwell 63-84V CV/CC Charger

do you think it is possible to modify a "Meanwell RS-150-48" (Out: 48V 158W, fanless) to provide 300V DC Output-Voltage ? Hello Runout – Thank you for the question - however I’m not an Electrical Engineer; my forte is Electromechanical Engineering which is a bit more on the component design and int...
by Kingfish
Apr 19, 2015 1:52 pm
Forum: General Discussion
Topic: SHINGLES
Replies: 11
Views: 778

Re: SHINGLES

Shingles On Thanksgiving 2014 – I began to have symptoms of head/chest flu that grew immediately worse of the next couple of days, and it really laid me out for about three weeks. By the time I started feeling normal again – about December 19th, I had contracted Shingles which evidently likes to at...
by Kingfish
Apr 18, 2015 10:27 pm
Forum: E-Bike Photos & Video
Topic: Phoenix Rising: P1
Replies: 58
Views: 26440

Re: Phoenix Rising: P1

Spring Update 2015 New Headlights Some time ago during the last winter I upgraded the headlights to throw a lot more light onto the road. Previously the dual Cree UniqueFire 300 Lumen setup just seemed to be getting dimmer with time. I swapped these out with a pair of high-powered triple-LED flashl...
by Kingfish
Apr 07, 2015 3:07 am
Forum: Items for Sale - New
Topic: Closed Europe pre-order MXUS 3000 V2 Motor
Replies: 163
Views: 14375

Re: Europe small group buy MXUS 3000 V2 Hub Motor

teslanv wrote:This is all you need to know, gentlemen.

I just want to say that this was a seminal moment on the track for what we are trying to accomplish with ebikes. I support TeslaNV in this endeavor.

Good Job! 8)

~KF
by Kingfish
Nov 26, 2014 2:34 pm
Forum: E-Bike Technical
Topic: Science, Physics, Math, & Myth
Replies: 626
Views: 42376

Re: Science, Physics, Math, & Myth

Analysis of typical Radial Flux Iron-Core Motor having variable winds Concerns & Declarations: Claimant posits motors of the same manufacture/series having the same load and speed and wheel diameter will use the same power regardless of the number of winds. Effects of Controllers, Batteries, Cablin...
by Kingfish
Nov 26, 2014 1:46 pm
Forum: E-Bike General Discussion
Topic: Cree HP-LED Conversion & DC-DC Converter Assy
Replies: 39
Views: 6585

Re: Cree HP-LED Conversion & DC-DC Converter Assy

Thanks Richard :) Understood; I will try to get a better picture of that over the next few days. Warrantee? We don't need no stinking warrantee :wink: Although I am super curious if the 1500 Lumen would have had the same voltage or maybe another LED; I'll take a look next time I'm at HD. A future so...
by Kingfish
Nov 25, 2014 2:20 pm
Forum: E-Bike General Discussion
Topic: Cree HP-LED Conversion & DC-DC Converter Assy
Replies: 39
Views: 6585

Re: Cree HP-LED Conversion & DC-DC Converter Assy

2000 Lumen Headlight Assembly Notes Preamble : My old LED headlights failed in an attempt to brighten them. Needed replacement ASAP. Need was worth more than the cost of waiting for best price to arrive. Solution was total MacGyver . Note : Repeating some previous information in order to create a c...
by Kingfish
Nov 25, 2014 1:14 am
Forum: General Discussion
Topic: Hit an animal last night!
Replies: 86
Views: 9285

Re: Hit an animal last night!

Tying in another thread for reference: E-bike Roadkill? No, just Roadstunned I hit a raccoon tonight on the way home; not at all thrilled :( I was on a short stretch of road that divides the urban part of Redmond from the rural part, and there's a moderately large stream ("Bear Creek") in close prox...
by Kingfish
Nov 24, 2014 7:06 pm
Forum: E-Bike Technical
Topic: Science, Physics, Math, & Myth
Replies: 626
Views: 42376

Re: Science, Physics, Math, & Myth

John : Hiding? Actually I work for a living, and when I’m not – I play. Been busy: This weekend I went up to Mt. Vernon and poured beer for a friend of mine at the Skagit Wine & Beer Festival; it was really an awesome experience and I was busy from sunrise to midnight. Sunday I barely had a cuppa j...
by Kingfish
Nov 24, 2014 2:35 am
Forum: E-Bike Technical
Topic: Science, Physics, Math, & Myth
Replies: 626
Views: 42376

Re: Science, Physics, Math, & Myth

7. Torque (τ) = Force (F) * 2 * Radius (r) This is where I got lost. I'm very new to e-biking, but didn't think classical mechanics had changed that much. :) Interesting thread nonetheless. You are correct! A transposition error upon my part - thank you for catching that. :) It should read: 7. Torq...
by Kingfish
Nov 23, 2014 11:25 pm
Forum: E-Bike General Discussion
Topic: Cree HP-LED Conversion & DC-DC Converter Assy
Replies: 39
Views: 6585

Re: Cree HP-LED Conversion & DC-DC Converter Assy

Hi Richard - thank you for the tips! :D We've had a new development from the PNW Ghetto Grunge Garage … Snagged the Home Despot 1000 Lumen flashlights, QTY-2; the 1500 Lumen units would not fit in my backpack. No worries – the 1k are P L E N T Y bright by a factor of 3X each. 8) I disassembled one u...
by Kingfish
Nov 21, 2014 6:21 pm
Forum: E-Bike General Discussion
Topic: Cree HP-LED Conversion & DC-DC Converter Assy
Replies: 39
Views: 6585

Re: Cree HP-LED Conversion & DC-DC Converter Assy

Yes, the Cree flashlights have drivers built in. I have searched for candidates though fear that I am not well-adept in this field. Thus I ask for a lil’ help or boot up my backside in the general direction. My local Electronics supply carries NTE components; spendy but then it's same-day service. O...
by Kingfish
Nov 21, 2014 5:47 pm
Forum: Motor Technology
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 7
Views: 75053

Re: MXUS 3000 Hub Motor

Bravo KF, not a single substantive argument, though you did manage to demonstrate your lack of understanding of what generates heat in our motors. I challenge you to find the one slightly incorrect statement in my previous post, though the difference it makes is insignificant. Don't bother trying t...
by Kingfish
Nov 21, 2014 5:45 pm
Forum: E-Bike Technical
Topic: Science, Physics, Math, & Myth
Replies: 626
Views: 42376

Science, Physics, Math, & Myth

My Father-in-Law used to tell me: “There are two types of people in this world: Those that can count…” (with anticipation of a conclusion that never arrived) Moving the sub-conversation here to this thread where we do not disrupt a fruitful conversation on the MXUS thread that has apparently moved o...
by Kingfish
Nov 20, 2014 10:22 pm
Forum: E-Bike General Discussion
Topic: Cree HP-LED Conversion & DC-DC Converter Assy
Replies: 39
Views: 6585

Re: Cree HP-LED Conversion & DC-DC Converter Assy

Got this bad boy a couple days ago and I finally had the time to hook it up this afternoon. DC-DC LM2596 Step-down Adjustable Power Supply Module _1.jpg Made the mods to my system where I could plug and play... The original circuit for the Crees was rock steady at 3.3VDC. The 12-volt feed into this ...
by Kingfish
Nov 20, 2014 8:11 pm
Forum: Motor Technology
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 7
Views: 75053

Re: MXUS 3000 Hub Motor

John , you have fallen on your sword and missed this by a wide frippen mile. I can't believe you actually posted the equation P = I^2R :lol: I love that Astro reference! Keep hittin' the Kool-Aid if it makes you feel good. It's pointless for me to continue questioning you when you have done yoursel...
by Kingfish
Nov 20, 2014 4:29 pm
Forum: Motor Technology
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 7
Views: 75053

Re: MXUS 3000 Hub Motor

Punx0r wrote:Astroflight say it's so and that's good enough for me :D
:lol:

~KF
by Kingfish
Nov 20, 2014 1:45 pm
Forum: Motor Technology
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 7
Views: 75053

Re: MXUS 3000 Hub Motor

John , I struggle to believe the stuff you write. You have mixed metaphors and facts and your explanations do not add up. Forget trying to explain this myth business … you are not conveying a message that is believable. You appear to be unable to provide us with Math that proves your theory, yet yo...
by Kingfish
Nov 17, 2014 3:11 pm
Forum: Motor Technology
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 7
Views: 75053

Re: MXUS 3000 Hub Motor

KF, Your math is flawed. I think maybe the different way I just explained it in a pm may help. Sorry – I was busy Sunday and I’m just now seeing this. “The same speed pushing the same load up the same hill requires a fixed amount of power. “ Presume same manufacturer & motor series. All motors = Al...
by Kingfish
Nov 15, 2014 4:44 pm
Forum: Motor Technology
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 7
Views: 75053

Re: MXUS 3000 Hub Motor

Umm, I think there is some confusion here… :roll: I never said low-winds on small wheels will perform identical to high-winds on large wheels. What I said was -> You can take a high-wind motor and place it on a larger diameter tire to increase Kv and decrease Kt, and vice versa on lower-wind motors....