Search found 20 matches

by paul drury
Apr 19 2018 2:43am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good morning Fetcher, I was wondering what settings you have for your A2B as the throttle response on mine seems a little twitchy and not very linear, the initial twist of the throttle there is a dead zone on the throttle where there is no respnse then over a very small area of throttle movement the...
by paul drury
Apr 06 2018 3:26am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good morning, just as an update after giving up on the A2B and using a Bosch powered bike for the last year or more I decided to have one more shot at getting the A2B running reliably. I bought a 12fet controller from Power Velocity (thank you Fetcher for the recommendation) and after a little probl...
by paul drury
Apr 06 2018 3:07am
Forum: Items for Sale - New
Topic: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199
Replies: 872
Views: 87715

Re: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199

Good morning, just to let everyone know the issue was not with the controller it was in fact a problem with the bluetooth on my phone, I tried my android tablet and it worked straight away, I just need to now tweek it for my motor/battery/ needs. Thanks to power velocity for the excellent support an...
by paul drury
Mar 28 2018 3:25pm
Forum: Items for Sale - New
Topic: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199
Replies: 872
Views: 87715

Re: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199

good evening, yes I have downloaded and installed the latest version from the play store, my phone is connected to the internet and the controller is switched on, I go to the manage screen and select PowerVelocity-i, I return to the settings screen and it shows connected: PowerVelocity at the top of...
by paul drury
Mar 27 2018 3:03am
Forum: Items for Sale - New
Topic: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199
Replies: 872
Views: 87715

Re: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199

Good morning, I have the 12FET controller with the bluetooth programming but I am experiencing a few problems with the software. I am using android and I have paired the controller without a problem, I launch the app and set the type to F12-100 and it says ready to program, I hit read and the app ju...
by paul drury
Nov 05 2017 9:56am
Forum: E-Bike Technical
Topic: Yuyang king 40amp controller
Replies: 37
Views: 2867

Re: Yuyang king 40amp controller

Good afternoon Fetcher, I have tried with the speed limit on and off, I have tried with eco mode on and off and no difference, I have tried the vehicle calibration in the app but with no success as when I click obtain for the starting distance it just sits there saying getting and I can get no furth...
by paul drury
Oct 25 2017 1:06pm
Forum: E-Bike Technical
Topic: Yuyang king 40amp controller
Replies: 37
Views: 2867

Re: Yuyang king 40amp controller

Good evening,
the controller is brand new, I have no programming cable but the parameters can be set via bluetooth, I have tried various settings but it will not spin above 8mph
thanks
Paul
by paul drury
Oct 25 2017 3:38am
Forum: E-Bike Technical
Topic: Yuyang king 40amp controller
Replies: 37
Views: 2867

Re: Yuyang king 40amp controller

Good morning, I have previously run through all 36 combinations with the same result, the only non rough forward spinning combinations will not exceed approximately 8mph. I am also using a brushlessmotor controller tester, I tested the motor windings and they were fine, I tested the motor hall senso...
by paul drury
Oct 24 2017 2:29am
Forum: E-Bike Technical
Topic: Yuyang king 40amp controller
Replies: 37
Views: 2867

Re: Yuyang king 40amp controller

Good morning,
I have just tried swapping the blues and greens as suggested and whilst it now will spin faster it is running incredibly rough with a lot of vibration and so I am unwilling to see how fast it will spin as it doesn't seem right to me.
thanks
Paul
by paul drury
Aug 23 2017 3:38am
Forum: E-Bike Technical
Topic: Yuyang king 40amp controller
Replies: 37
Views: 2867

Re: Yuyang king 40amp controller

good morning, I too have a Yuyang 36-72V 40A bluetooth controller and I am also having problems with it. I can connect to it via bluetooth fine and the motor turns but no matter what settings I set I cannot get it run above 8mph, I am connecting to an ultramotor/a2b motor with a 48v 20ah pack. I hav...
by paul drury
Dec 07 2016 11:10am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good afternoon,
would anyone have any suggestions for a reliable controller, it needs to to be 48v 1000w continuous (minimum) and preferably compatible with the kt-lcd3 display.
thanks
Paul
by paul drury
Dec 01 2016 1:56pm
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Goodevening Fetcher, well I tried the trimpot suggestion, I adjusted the pot until the wheel just started to turn with the wheel off the ground which was at 1.22v I then dialled it back to 1.19v and still the same problem persists. So I think I have pretty much exhausted all avenues and I guess I wi...
by paul drury
Nov 22 2016 11:12am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Ok after a little more investigation I have found the following. With the KT LCD3 panel disconnected the controller still runs but also it still has the same throttle problem. I am getting the full 4.2v to the throttle at all times even when the throttle is not responding, the throttle also puts out...
by paul drury
Nov 11 2016 4:27am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good morning, Ypedal the battery voltage at rest is 53.04V, at full throttle with no load ( back wheel off the floor) the initial current peaks at approximately 1.94A before settling down to around 0.8-0.9A with a voltage off 52.65V. fetcher I believe there is a setting on the KT-LCD3 for regen whic...
by paul drury
Nov 10 2016 2:40pm
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good evening, well I managed to find the time to put the motor back together, I followed your advice fetcher and I eventually managed to get the motorback together although it was still a tight fit. I have done a few test runs and a new problem has cropped up. The new controller is a 1500w sine wave...
by paul drury
Sep 07 2016 3:53pm
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good evening, a quick update and a question if I may. I eventually tacked the problem of my lack of speed to a dodgy connector in the birds nest of wiring at the bottom of the frame, once i rectified this I managed to reach a max speedof 26.4 mph on the flat without assistance :) However the crappy ...
by paul drury
Jun 16 2016 8:34am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good afternoon, yes I thought that was where the problem lay but I thought I would ask before pulling the motor apart. What is the best controller to upgrade to? I will still want to run on 48v for the time being but will eventually increase to 72v, a lot of the older posts mention the Lyen 12FET co...
by paul drury
Jun 06 2016 1:37pm
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

well I have bitten the bullet and cut into the throttle wiring so I can get some readings, with no throttle input the voltage on the signal wire is a constant 1.04V, with full throttle the reading is a constant 4.85V. Are these reasonable readings?
thanks
Paul
by paul drury
May 25 2016 1:53pm
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good evening, Sorry for the delayed response but things have been a bit hectic. OK after some testing the results are No load max speed 21 - 22mph drawing approximately 0.77 amps Under load - me riding from a dead stop on a flat road, initial draw 21-22 amps falling as speed is gathered, max speed 1...
by paul drury
May 22 2016 7:56am
Forum: E-Bike Reviews & Testing
Topic: A2B Metro - www.ultramotor.com - Video Page4
Replies: 405
Views: 71565

Re: A2B Metro - www.ultramotor.com - Video Page4

Good afternoon, I have had an A2B metro for some time and use it regularly to commute to work with no real issues. A couple of months back its normal cruising speed dropped from its usual 16-18mph to around 13-14 mph over the space of a month or so. I assumed that the battery was on its last legs an...