Search found 35 matches

by Firedog
May 31 2019 8:08am
Forum: E-Bike General Discussion
Topic: Why do Hall Effect Sensors break? (UPDATE, AGAIN w new 5404)
Replies: 27
Views: 5035

Re: Why do Hall Effect Sensors break? (UPDATE, AGAIN w new 5404)

I had all 3 Hall sensors fail in a 5303 after the motor worked fine on the bench. It turned out a red(+) wire was shorted to the axle. New Halls and fix the short was the solution. I had tested all 5 hall lead wisre combinations for shorts but didn't think to check for a short to the motor. I hope y...
by Firedog
May 29 2019 2:20pm
Forum: E-Bike Technical
Topic: Guide: fixing deadband of Wuxing hall throttle
Replies: 3
Views: 1020

Re: Guide: fixing deadband of Wuxing hall throttle

It is a bit difficult to get the snaps to release fully since they bite on the full perimeter. That's "difficult" how about "nearly impossible"! Get a short length of 3/4' pvc sprinkler pipe. It is the perfect OD and the perfect thickness to release the snap. I suppose a piece of 3/4" schedule 40 w...
by Firedog
May 21 2019 1:35pm
Forum: Battery Technology
Topic: Small 36V battery recommendations
Replies: 7
Views: 427

Re: Small 36V battery recommendations

Consider running 2 18v tool batteries in series. Available 2 to 10ah. My choice is Makita because of the simple mount design, compact size, very low price, long life and fast charging (charger's cool cells with fan during charge). Flexible too: bring 2 spares for long rides and you can build the wif...
by Firedog
May 20 2019 11:52am
Forum: E-Bike Technical
Topic: KT-LCD3 display - speed report wrong
Replies: 3
Views: 280

Re: KT-LCD3 display - speed report wrong

couldn't match my GPS until I added the external sensor Thank you! Instead of ordering and waiting for a external speed sensor, I pulled a PAS sensor and an old spoke magnet out of my parts bid. It works perfectly. I set up this tandem to use a Crystalyte 5303 or a much lighter 408. A 5 minute swap...
by Firedog
May 20 2019 9:55am
Forum: Battery Technology
Topic: Using cordless drill batterys
Replies: 11
Views: 1463

Re: Using cordless drill batterys

Where did you find connection boards for the batteries
PM me for DIY instructions or a quote for me to build one.
by Firedog
May 17 2019 6:47pm
Forum: E-Bike Technical
Topic: KT-LCD3 display - speed report wrong
Replies: 3
Views: 280

KT-LCD3 display - speed report wrong

I just installed a KT36/48VPRL controller with a compatable KT-LCD3 display driving a Crystalyte 408 front hub with 54V. The speedometer function is calibrated with a setting for wheel diameter (26,700c,28,29) and P1 (Motor characteristic parameter setting) where P1= motor gear reduction ratio x num...
by Firedog
May 17 2019 6:17pm
Forum: E-Bike Technical
Topic: hub motor hall sensor woes - need help
Replies: 6
Views: 321

Re: hub motor hall sensor woes - Fixed

So all three Hall sensors were fried. I replaced them being careful no lead was grounded or shorted to another. The Crystalyte 5303 motor now works perfectly and wow!. I mounted it to a tandem with a 35A max controller using using 54V it has more power than should should be legal. (It isn't legal in...
by Firedog
May 06 2019 6:07pm
Forum: E-Bike Technical
Topic: hub motor hall sensor woes - need help
Replies: 6
Views: 321

Re: hub motor hall sensor woes - need help

I fixed the one red wire that was shorted to the armature. I re-tested the continuity of all 5 wires from the connector to the sensor; checked that no wire was shorted to any other and that none were still shorted to the armature (ground). All good. Unfortunately, none of the halls will change state...
by Firedog
May 06 2019 3:57pm
Forum: E-Bike Technical
Topic: hub motor hall sensor woes - need help
Replies: 6
Views: 321

Re: hub motor hall sensor woes - need help

Thanks for responding amberwolf. I think you got me on to the right path. I have the wires connected correctly and all beveled edges pointing up. All 5 wires are continuous from the connector to the individual sensor's leg. None of the wires is shorted to any other. None of the wires is shorted to t...
by Firedog
May 05 2019 10:24pm
Forum: E-Bike Technical
Topic: hub motor hall sensor woes - need help
Replies: 6
Views: 321

hub motor hall sensor woes - need help

I have a NOS Crystalyte 5303 front hub motor. I thought it would be interesting connect it to a cheap 72V 1500W Sunwin controller. Bench test was smooth. On the street it was more than interesting; actually a little scary but the bike died climbing the first hill. Turns out one of the motor hall sen...
by Firedog
Mar 11 2019 11:31am
Forum: E-Bike Build Threads / Photos & Video
Topic: Rhoades Car: a design mess: some fixes
Replies: 5
Views: 426

Re: Rhoades Car: a design mess: some fixes

Amberwolf, Thank you for the alternate hub motor mounting idea. Somewhere in ES I saw a hub motor mounted to a frame driving a rear wheel via a chain. I thought the hub was fixed and a sprocket mounted to the axle. I gave up when I realized the wires have to spin with the axle. I couldn't figure how...
by Firedog
Mar 10 2019 8:04pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Rhoades Car: a design mess: some fixes
Replies: 5
Views: 426

Rhoades Car: a design mess: some fixes

I'm not sure if this goes under E-bike builds or somewhere else. A guy that has bought several of my bikes builds brought me a Rhoades Car with some problems. Originally designed as a 4 wheel pedal only, side by side tandem, this model, came with a 24v brushed motor and heavy lead acid batteries. Th...
by Firedog
Jan 10 2019 12:30pm
Forum: Motor Technology
Topic: Inside EPLUS motor after 14,100 kms
Replies: 4
Views: 893

Re: Inside EPLUS motor after 14,100 kms

Mico13car, I'm trying to open my EPLUS 1000W hub. It looks like you were able to press the center out of the bearing from the cassette side. Did you use a press, heat? Any tips would be appreciated. I really need to access the controller side of the the motor. There is a large circlip preventing rem...
by Firedog
Dec 27 2018 3:08pm
Forum: E-Bike Technical
Topic: $14.99 72v Sunwin Controller
Replies: 494
Views: 50896

Troubleshoot 48-72v 1500w Sunwin controller

I connected the subject controller to a Crystalyte 5303 motor with 72v battery. The only connections used; battery +/-, hall sensor, phase wires, throttle and controller on power wire. The controller has 100V caps and solder pads marked 60v, 64v, 72, 80v. I left those as received. I shop test the co...
by Firedog
Dec 11 2018 1:52am
Forum: E-Bike General Discussion
Topic: Stromer STX1 -> Hack
Replies: 9
Views: 659

Re: Stromer STX1 -> Hack

I believe the STX1 came with the TDCM Ulta, power 48, motor. It has the controller inside. It's very heavy but powerful and totally quiet. Well worth trying to fix. Agreeing with Amberwolf, if you want to keep all the feature of the STX1 you are at Stomer's mercy for part$. You also can't be sure wa...
by Firedog
Dec 11 2018 12:23am
Forum: E-Bike General Discussion
Topic: E-bike Powered by Tool Batteries?
Replies: 12
Views: 1341

Re: E-bike Powered by Tool Batteries?

I was wondering if anyone has made an e-bike powered with batteries from any of the battery powered tools (e.g. Greenworks, Ego, Ryobi, etc). Seems like an interesting way to save on cost (if you already have the batteries) and make the power system modular (e.g. put in one battery pack for a short...
by Firedog
Dec 10 2018 10:50pm
Forum: E-Bike General Discussion
Topic: Throttle on drop bar
Replies: 18
Views: 2000

Re: Throttle on drop bar

[/quote] Sure about that? Road bike bars are typically 15/16", about 23.8mm. The aluminium ring has 27mm OD,so the wall thickness will be around 1.5mm after conversion - strong enough in my opinion.IMG_20181211.jpg [/quote] Silence, your are right. I stand corrected. I used road bar's center diamete...
by Firedog
Dec 10 2018 2:51pm
Forum: E-Bike General Discussion
Topic: Throttle on drop bar
Replies: 18
Views: 2000

Re: Throttle on drop bar

It's crazy no one makes a throttle for drop bars (1" diameter). All are made for 7/8" (22mm) mountain bike bars. Most throttles need to be on the bar; using a set screw in an aluminum ring to fix to the bar. Unfortuneatly, the ring isn't thick enough to ream out to 1". Here's a throttle that doesn't...
by Firedog
Dec 03 2018 2:33am
Forum: E-Bike Technical
Topic: Experiences or Comments on these controllers.
Replies: 3
Views: 398

Experiences or Comments on these controllers.

https://www.ebay.com/itm/US-E-bike-Multiple-Voltage-Power-Selection-Brushless-DC-Motor-Speed-Controller/302921673524?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D5e8681570dd64a539eed83204a913c46%26pid%3D100675%26rk%3D2%26rkt%3D15%26sd%3D272874062884%26itm%3D30292...
by Firedog
Dec 03 2018 1:30am
Forum: E-Bike Technical
Topic: Ebikeling 500w Geared Hub Kit
Replies: 41
Views: 5628

Re: Ebikeling 500w Geared Hub Kit

Which wires need crossed to "hot wire"? Going for stealth on my bike and would like to rid the controller. I am not sure about the type of display unit you have, but the procedure below worked on my 880 and 810 LED units, with a 5-pin connector. The LED display mounts are notorious for breaking, so...
by Firedog
Dec 03 2018 1:20am
Forum: E-Bike Technical
Topic: Ebikeling 500w Geared Hub Kit
Replies: 41
Views: 5628

Re: Ebikeling 500w Geared Hub Kit

I've used that kit (36v,500w 700c rear wheel) and 24mph with pedaling is no problem on high power. The controller has 2 blue power wires; open = no restriction: shorted = power diminishes to nothing at 20mph. It's really a good feature since the range in low power is fantastic at 19 mph since human ...
by Firedog
Oct 12 2018 5:15pm
Forum: Battery Technology
Topic: Batteries - a better approach?
Replies: 6
Views: 775

Re: Batteries - a better approach?

Just to clarify,... Are you actually using OEM Makita 10.5 Ah packs ? I cannot find any reference to them at tool stores. Milwalkee have 9Ah , and Bocsh have a new 12Ah 18v pack, but the costs is ludicrous..$250 ? If you can find them. Sorry for the long delay in answering. I've spent the the summe...
by Firedog
Jun 08 2018 12:13pm
Forum: Battery Technology
Topic: Batteries - a better approach?
Replies: 6
Views: 775

Re: Batteries - a better approach?

Yes, each has a internal BMS. The BMS in true Makita's balances the cells, but the largest capacity available only 10 cells and 6ah. The BMS in the batteries I have built don't balance the individual cells. They use 15 genuine LG MJ1 cells (3.5ah-10a continuous). I've added a 6 pin header to allow m...
by Firedog
Jun 08 2018 11:04am
Forum: Battery Technology
Topic: Batteries - a better approach?
Replies: 6
Views: 775

Batteries - a better approach?

I find quality ebikes being dumped for a few dollars on Craigslist. Reason? Battery failure and owner's not willing spend $700 for another proprietary battery that will likely fail much sooner than advertised. I bought a 2014 Izip E3 Dash last weekend. Nice bike, bad battery, very cheap price. Rathe...
by Firedog
Apr 17 2018 3:00am
Forum: E-Bike Technical
Topic: connecting five-wire ebike LED display to apparently uncompaible controller
Replies: 10
Views: 3363

Re: connecting five-wire ebike LED display to apparently uncompaible controller

I doubt the 810 display will work or if any display is necessary. That controller is sold by 7 different eBay vendors. One would think one of them would label the wires with clear descriptions. But alas, they are all the same and the English translation..... unusual. With an ohm meter check to see w...