Search found 329 matches

by Tom L
Feb 10, 2018 4:19 am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 368
Views: 18841

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Have you updated the programming for the 2018 model, as per robocam’s earlier post here?
by Tom L
Feb 07, 2018 4:25 am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 368
Views: 18841

Re: My Bafang Ultra Mountain Bike! Frey AM1000

FREYebikes wrote:
Feb 07, 2018 12:11 am
If here support video, we can upload some little video for you have a look.
Best way to post a video is upload it to YouTube and post a link to it here.
by Tom L
Feb 01, 2018 7:17 am
Forum: E-Bike General Discussion
Topic: Duel wheel e-bike build
Replies: 10
Views: 208

Re: Duel wheel e-bike build

Was this what you meant in the title? Seems appropriate but I’m not sure you did it on purpose.

“Dual” means having two parts. “Duel” refers to a conflict between two entities.
by Tom L
Jan 23, 2018 4:54 pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 368
Views: 18841

Re: My Bafang Ultra Mountain Bike! Frey AM1000

The Exess bike is very pretty and expensive. I emailed them a few weeks ago asking about freight costs and a couple of technical questions (e.g. e-brakes?) . I have heard nothing back. Not very promising.
by Tom L
Jan 20, 2018 8:32 pm
Forum: Vendor Relations Corner
Topic: Voltaplex
Replies: 1
Views: 130

Voltaplex

Anyone used this company for cells or packs?

https://voltaplex.com

Any reason I should be cautious?
by Tom L
Jan 17, 2018 6:49 am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 368
Views: 18841

Re: My Bafang Ultra Mountain Bike! Frey AM1000

I like the smaller displays too.

Hey robocam, any updates on the ride experience now that you’ve had it for a few weeks?
by Tom L
Jan 17, 2018 3:56 am
Forum: E-Bike General Discussion
Topic: The winner is . Not what you think
Replies: 37
Views: 985

Re: The winner is . Not what you think

Bring on the self driving taxis. There has been a significant decline in applications for new car licences over the past few decades in Australia and the US. http://time.com/money/4185441/millennials-drivers-licenses-gen-x/ https://theconversation.com/why-are-young-australians-turning-their-back-on-...
by Tom L
Jan 17, 2018 3:45 am
Forum: E-Bike Technical
Topic: Software for Grin Cycle Analyst and Phaserunner log data
Replies: 3
Views: 190

Re: Software for Grin Cycle Analyst and Phaserunner log data

Does dividing by 4096 and then multiplying by 100 give you a sensible % value?

Just guessing here, from what I’ve read in other threads.
by Tom L
Jan 10, 2018 3:15 am
Forum: E-Bike General Discussion
Topic: Badass e-Bike Speed Tuning Dongle
Replies: 30
Views: 1062

Re: Badass e-Bike Speed Tuning Dongle

Assuming the signal from the magnetic speed sensor is digital, a simple D-type flip flop can be easily configured to divide the signal by two (i.e. allow every other pulse). With the size of SMD IC packages this could just about be hidden in the cable. https://i.imgur.com/oKoqVKN.jpg Disabling it wi...
by Tom L
Dec 22, 2017 2:51 am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 368
Views: 18841

Re: My Bafang Ultra Mountain Bike! Frey AM1000

robocam wrote:
Dec 22, 2017 1:30 am
Ok, so if you use a 16 tooth sprocket, the torque at the IGH would only be 58 Nm max. Can it handle that?
It’s rated for 500W and 100Nm.
by Tom L
Dec 18, 2017 4:48 am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSO2 comments on new build
Replies: 2
Views: 325

Re: Bafang BBSO2 comments on new build

Rober wrote:
Dec 16, 2017 12:31 pm
...crank speed is too fast with a 48V battery.
This is my biggest problem with the BBS02 too.
by Tom L
Dec 15, 2017 7:35 pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 368
Views: 18841

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Kitaro1999 wrote:
Dec 09, 2017 2:00 pm
Those headlights look cool. What are those?
Klarus BK30.
by Tom L
Jun 13, 2017 7:22 am
Forum: E-Bike General Discussion
Topic: choose fuse for bbshd 1000 w 48v
Replies: 1
Views: 239

Re: choose fuse for bbshd 1000 w 48v

A common rule of thumb is 1.35x the maximum load current. 1.35x 30A = 40A fuse. Make sure it is also rated to interrupt your maximum DC voltage. DC electric arcs are much harder to extinguish than AC. Also this assumes it will be operating at a temperature of 25 deg C. There are derating curves for ...
by Tom L
Jun 08, 2017 9:47 am
Forum: E-Bike Technical
Topic: Resistance and load in non-ohmic circuits
Replies: 8
Views: 436

Re: Resistance and load in non-ohmic circuits

I wonder what would happen if you fed the light from a simple one transistor constant current source designed to provide only 35W at your maximum supply voltage?
Would the light be dimmer or not work at all?
by Tom L
May 29, 2017 5:35 am
Forum: E-Bike Technical
Topic: hub motor wire insulation repair
Replies: 6
Views: 400

Re: hub motor wire insulation repair

Careful with the RTV. Some of them release acetic acid when curing - highly corrosive to copper wire.
by Tom L
Apr 26, 2017 4:40 am
Forum: E-Bike Technical
Topic: Bagang bb02 on tern link folder
Replies: 7
Views: 318

Re: Bagang bb02 on tern link folder

What's the chainline of the bike?

The standard BBS02 chainline is ~50mm. The Lekkie chainrings reduce this to 46.5mm.
by Tom L
Apr 26, 2017 4:34 am
Forum: E-Bike General Discussion
Topic: 45km/h pedelec petition for Aussies
Replies: 11
Views: 474

Re: 45km/h pedelec petition for Aussies

...A 350w mid drive that can do up to 45km/h is actually quite good, it will pull you up hills at 25km/h easily and let you run on flat ground at 40+ ... Those speeds seem rather inflated. 750W mid-drive hardly gets me up my hills faster than 15km/h. On the flat I can do 45km/h at 750W. How do you ...
by Tom L
Mar 23, 2017 8:26 am
Forum: E-Bike Reviews & Testing
Topic: Another (more satisfactory) Luna Cycle experience
Replies: 22
Views: 3165

Re: Another (more satisfactory) Luna Cycle experience

http://www.cad.gov.hk/sc/pdf/965-970.pdf Lithium ion cells and batteries must be placed in inner packagings that completely enclose the cell or battery then placed in an outer packaging. The completed package for the cells or batteries must meet the Packing Group II performance requirements. http://...
by Tom L
Mar 23, 2017 7:47 am
Forum: E-Bike Reviews & Testing
Topic: Another (more satisfactory) Luna Cycle experience
Replies: 22
Views: 3165

Re: Another (more satisfactory) Luna Cycle experience

Hmm. That still looks like poor packing to me. Especially at one of the corners.

Contents of that weight should be double boxed in properly sized boxes.

Was it shipped with the appropriate DG (dangerous goods) classification?
by Tom L
Mar 21, 2017 5:16 am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSxx - fault finding and fixes
Replies: 987
Views: 112958

Re: Bafang BBSxx - fault finding and fixes

Have you checked the metal reduction gears are still well lubed up with grease?

You don't have to take the motor off the bike to remove the cover plate.

Mobilgrease 28 is the go. Don't get it on the nylon gear though.
by Tom L
Mar 16, 2017 12:58 am
Forum: E-Bike General Discussion
Topic: perfect gear ratio and components.
Replies: 14
Views: 677

Re: perfect gear ratio and components.

WTF is "natural"? 60rpm? 80? 90?

You ask vague wishy washy questions and give no real detail. Then you call helpfuel questions and advice pathetic.

You're on your own, I'm done.
by Tom L
Mar 10, 2017 4:59 am
Forum: E-Bike General Discussion
Topic: Wiring question to help a dummy
Replies: 15
Views: 683

Re: Wiring question to help a dummy

Ok so the LED light has to be connected with the correct polarity, but does the horn?

Are you sure the horn only works with red as negative?

If so, that is a spectacularly dumb way to designate device.

Any chance you can open it up and swap the polarity of the horn or LED?
by Tom L
Mar 10, 2017 12:20 am
Forum: E-Bike General Discussion
Topic: Wiring question to help a dummy
Replies: 15
Views: 683

Re: Wiring question to help a dummy

Is it an LED light or an electronic horn? Are they actually polarity sensitive?
by Tom L
Mar 09, 2017 11:04 pm
Forum: E-Bike General Discussion
Topic: Wiring question to help a dummy
Replies: 15
Views: 683

Re: Wiring question to help a dummy

Red is the colour for a telecommunications earth in Australia - however they use a negative DC supply so technically earth in this instance is positive.