Search found 834 matches

by docw009
Jan 13 2019 11:02pm
Forum: E-Bike General Discussion
Topic: Rim brake pads after ebike conversion
Replies: 9
Views: 297

Re: Rim brake pads after ebike conversion

Now I know what kinda weight of a bike I've got...the trek 800 is built like a tank compared to these newer bikes....soo much weight. So much steel! So much weight to slow down! Poor brakes... My first ebike conversion is a Trek 800. As I recall, it weighs about 52 pounds at the moment, but I put o...
by docw009
Jan 13 2019 10:49pm
Forum: E-Bike General Discussion
Topic: Can I change PAS speed of sw900 or switch LCD?
Replies: 6
Views: 99

Re: Can I change PAS speed of sw900 or switch LCD?

I got my SW900 with a geared hubmotor kit. It also would go about 16 mph in PAS 1 as soon as it detected cadence. Late last year, I played around with P11 and P12 (set P12 at 0 or 1) and the bike slowed down to about 14 mph, but there was a lag between pedal movement and motor response that seemed l...
by docw009
Dec 29 2018 10:51pm
Forum: Battery Technology
Topic: Replacing with Rechargeables
Replies: 9
Views: 210

Re: Replacing with Rechargeables

Energizer AAA spec sheet. Around 900mAH at 100ma load, 500mAH at .5A load, http://data.energizer.com/pdfs/e92.pdf Three in series is 4.5V. One 18650 is 4.2 max, and probably will run around 3.9V. I'd rather use the AAA's unless I knew the flashlight cuts off current before the 18650 goes below 2.5V....
by docw009
Dec 29 2018 11:55am
Forum: E-Bike General Discussion
Topic: Can a throttle be hooked up to this IKEA e-bike?
Replies: 42
Views: 9384

Re: Can a throttle be hooked up to this IKEA e-bike?

Rasta, did you see this thread? Poster connected a throttle directly to his controller. https://endless-sphere.com/forums/viewtopic.php?f=2&t=97103 It looks like your controller is from the same company, but I didn't see any obvious unused pads on your circuit board that looked like they would accep...
by docw009
Dec 28 2018 10:56am
Forum: E-Bike General Discussion
Topic: Can a throttle be hooked up to this IKEA e-bike?
Replies: 42
Views: 9384

Re: Can a throttle be hooked up to this IKEA e-bike?

Rasta, does your bike use a cadence or a torque sensor? The above only works with cadence sensor. The brand, if it's a popular commercial bike, will often tell people.
by docw009
Dec 26 2018 11:04am
Forum: E-Bike General Discussion
Topic: Matching controller with rear hub motor?
Replies: 6
Views: 269

Re: Matching controller with rear hub motor?

My experience has been that if you get a system with a crappy PAS, where you're actually ghost pedalling because the motor runs too fast, higher gearing isn't going to help too much. Match the amps to the motor. If you have a 1000W kit and like how it runs, other than no PAS, the replacement should ...
by docw009
Dec 17 2018 7:54pm
Forum: E-Vehicles General Discussion
Topic: Speed level questions for the rear hub kit I installed
Replies: 8
Views: 822

Re: Speed level questions for the rear hub kit I installed

@Rsmk4turbo, I also have the SW900LCD and yes, it's terrible for PAS. I didn't spend much time with it initially, as I already had a spare KT controller with LCD3 display. I've come to like KT's torque simulation PAS. Anyway, the LCD3 does not work in place of my SW900. It ights up. That's all. I ha...
by docw009
Dec 17 2018 1:17am
Forum: E-Bike General Discussion
Topic: Where to buy geared rear hub motor kit?
Replies: 19
Views: 1623

Re: Where to buy geared rear hub motor kit?

I am in the process of installing the ebikeling geared kit right now and am concerned about the problems with the PAS using the lcd. Do I need a different lcd or controller to have a useful PAS. Ideally I would like to be able to set the amount of assistance for each level. I have a Rad Rover and d...
by docw009
Dec 10 2018 6:37pm
Forum: General Discussion
Topic: How long should this take?
Replies: 3
Views: 317

Re: How long should this take?

It will cost $200 for labor to get your old motor equipped with a working throttle/cobtroller plus probably $75-100 for those parts? You can buy a complete geared hubmotor kit that includes motor/wheel, controller, PAS sensor, throttle, LED display, and torque arm for under $200. Install it yourself...
by docw009
Dec 10 2018 6:11pm
Forum: General Discussion
Topic: Switching my shifters
Replies: 6
Views: 304

Re: Switching my shifters

I like the Shimano Acera or Altus XL310 trigger shifters. They fit with my ebrakes, thumb throttle, and controller buttons, plus I think they work well. The right side have 8 indents for a 8 geas, but I use them on 7 gears w/o problems. Around $20-25per pair on ebay.
Acera.jpg
Acera.jpg (95.84 KiB) Viewed 194 times
by docw009
Dec 08 2018 11:20pm
Forum: E-Bike General Discussion
Topic: E-bike Powered by Tool Batteries?
Replies: 7
Views: 300

Re: E-bike Powered by Tool Batteries?

I have heard good things about EGO packs, My input is to avoid Ryobi's "40V" packs. I used my Ryobi batteries 36V 2AH and 36V 5AH to run around on my little 250W ebike motors, but they're not cost effective and unable to deliver more than 10A.
by docw009
Dec 07 2018 7:42pm
Forum: E-Bike Technical
Topic: Ebikeling 500w Geared Hub Kit
Replies: 19
Views: 2170

Re: Ebikeling 500w Geared Hub Kit

I bought a current 2018 ebikeling kit with the 810LED. The old version 4 pin 810LED was analog. The newer one is a 5 pin digital unit, although the case looks exactly the same. Still comes in 48V and 36V versions though, Haven't run this on a bike yet. Just hooked tested to see if it spins the motor...
by docw009
Dec 07 2018 12:08pm
Forum: Battery Technology
Topic: How a Lunacycle / Hailong battery fares after 2 years..
Replies: 38
Views: 1520

Re: How a Lunacycle / Hailong battery fares after 2 years..

tomjasz wrote:
Dec 06 2018 5:51pm
docw009 wrote:
Dec 06 2018 4:57pm
Here's a Luna Dolphin. purchased in August 2015, shortly after Eric started selling ebike stuff.


30Q in 2015?
Yes. It was August, 2015.

And I found out the urethane foam needs air to cure. I had to do it with a cardboard form.
by docw009
Dec 06 2018 4:57pm
Forum: Battery Technology
Topic: How a Lunacycle / Hailong battery fares after 2 years..
Replies: 38
Views: 1520

Re: How a Lunacycle / Hailong battery fares after 2 years..

Here's a Luna Dolphin. purchased in August 2015, shortly after Eric started selling ebike stuff. It's been ratlling and I thought I would put in something to cushion the cells. Opened up, the was only one piece of foam rubber in there, and it had turned hard and shrunk. The cells would slid back and...
by docw009
Dec 06 2018 11:23am
Forum: E-Bike Technical
Topic: Ebike power cut-off due to controller
Replies: 4
Views: 154

Re: Ebike power cut-off due to controller

Agree. Battery issues. It can't supply enough current without the voltage briefly sagging below the 20V LVC of the controller. Is it a home made pack? Are the cells really old? 9P is a lot of cells in parallel. The controller maxes out at 17A, which is less than 2 amps per cell.
by docw009
Dec 04 2018 5:00pm
Forum: Battery Technology
Topic: BMS Replacement
Replies: 3
Views: 167

Re: BMS Replacement

What I did, faced with similar BMS swap, was to splice the wires on the new plug to the old ones. Easy to do, one at a time, so nothing gets mixed up. Added 1/2" of heat shrink for protection. That way, I could leave the cells wrapped up.
by docw009
Dec 03 2018 2:33pm
Forum: E-Bike General Discussion
Topic: Notes on my first build, rear belt drive
Replies: 21
Views: 700

Re: Notes on my first build, rear belt drive

Yikes. Off by 10X. Thank you for the correction, Makes more sense now.
by docw009
Dec 03 2018 12:48pm
Forum: E-Bike General Discussion
Topic: Notes on my first build, rear belt drive
Replies: 21
Views: 700

Re: Notes on my first build, rear belt drive

Nice and simple execution. For power, 200W seems high. I figured your ride time was .39 hours, and if you used .6AH, that's 1.6A for average battery current. Given a 14.4V battery, that's more like 25W? Anyway, on my hubmotor bikes, at a little slower speed (13 mph) my display says I'm using around ...
by docw009
Nov 30 2018 11:59am
Forum: E-Bike Technical
Topic: 60 cell 36v. No charge from BMS
Replies: 4
Views: 183

Re: 60 cell 36v. No charge from BMS

If you have to replace a group, the 1st and the10th group probably are the easiest ones to do.
by docw009
Nov 30 2018 12:59am
Forum: E-Bike Technical
Topic: 60 cell 36v. No charge from BMS
Replies: 4
Views: 183

Re: 60 cell 36v. No charge from BMS

Measure the voltage on each parallel cell group. Use the balance wires or contact the cells directly. If one group is too low, below 2.5V, the BMS won't allow charge. If they are all around 3.4 V, then you might have a wiring error or a bad BMS.
by docw009
Nov 25 2018 1:04pm
Forum: E-Bike General Discussion
Topic: Downtube Folding bikes: Help picking a front hub motor & battery
Replies: 4
Views: 226

Re: Downtube Folding bikes: Help picking a front hub motor & battery

I've put the Q100H motor on the rear wheels on two of your folders, Nova and FS8. WIth 36V, they run around 18 mph, which matches the cadence for a 46T front and 11T rear gear, if pedal assist is being used. I believe They'll go about 20-22 mph on 48V and around 24 mph on 52V. I've also put a Q100H ...
by docw009
Nov 23 2018 5:48pm
Forum: E-Bike General Discussion
Topic: Groundbreaking Innovation On The E-bike!!
Replies: 16
Views: 878

Re: Groundbreaking Innovation On The E-bike!!

Redundant. I can tell how hard I am working by my speedometer.
by docw009
Nov 23 2018 12:33am
Forum: E-Bike General Discussion
Topic: Where to buy geared rear hub motor kit?
Replies: 19
Views: 1623

Re: Where to buy geared rear hub motor kit?

DRGam -- I bought my SW900 kit 11 months ago. You got yours recently. SW900's are a popular display. Aren't they used on your RAD too? ANyway, I had contacted the vendor with my issues, and I was not the only one. Perhaps the issue had been fixed. Put your kit together and tell us.
by docw009
Nov 21 2018 12:58pm
Forum: E-Bike General Discussion
Topic: Where to buy geared rear hub motor kit?
Replies: 19
Views: 1623

Re: Where to buy geared rear hub motor kit?

FWIW, no geared motor can supply speedo input when coasting. This is because it is reading the hall sensors. When coasting, the motor core is not turning on a geared type motor, so the speedo reads 0 mph. If you really really need speedo for a geared motor, just add a regular bike speedo, or use a ...
by docw009
Nov 20 2018 11:44pm
Forum: E-Bike General Discussion
Topic: Where to buy geared rear hub motor kit?
Replies: 19
Views: 1623

Re: Where to buy geared rear hub motor kit?

For ebikeling, I liked the version with the 810LED display. Mine had 63V capacitors in the 36V 22A controller, so I occasionally run it at 48V, It will run 20/24mph on 36/48V. I cannot recommend the SW900 LCD version because the speedometer didn't work when coasting and PAS was screwed up. Maybe the...