Search found 30 matches

by derb
Sep 05 2019 12:28am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

SInce the Sur-Ron rear tire only lasts 500 miles, what are you guys replacing it with? I don't see many posts about what everyone is using as a rear replacement tire, even though I'm sure most have put 500 miles on their sur-ron so they had to have replaced it. My front Sur-Ron tire is still very n...
by derb
Feb 05 2019 5:46am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Does anyone know a European dealer who sells the foot peg bracket plates?
by derb
Feb 05 2019 5:32am
Forum: E-Bike Non-hub Motor Drives
Topic: LMX Motor - Kelly Controller - Hall Problem?
Replies: 18
Views: 988

LMX Motor - Kelly Controller - Hall Problem?

I would like to use a 2018 LMX Motor for my Etricks R01. As a controller, I have a Kelly KBS 72181E. The problem is: The Hall sensors make short pulses before and after the main pulse. As a result, it runs rough and needs too much power (4-5A at 72V at full throttle without load) and fluctuates in t...
by derb
Jan 29 2019 9:53am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Little Upgrade. Fox 40
20190125_221430.jpg
by derb
Jan 14 2019 9:32am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

At 2500km I changed the chain. As soon as you lift a chain link over half the tooth height on the sprocket, you should renew the chain. The teeth on the sprockets are still looking good and will not be changed yet. 2ed0ede3-d939-4050-a338-e5d62dc0e6d4.jpg 938ddfc4-4e7f-41ce-a8a1-78af3c89132c.jpg 201...
by derb
Dec 20 2018 4:01am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Allex wrote:
Dec 18 2018 4:56pm

Just checking how motor spins without chain and belt:
Can you do that again at 20 to 30km / h? I would be interested in whether the engine has its own resonance frequency in this area.
Thanks
by derb
Dec 11 2018 8:14am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

The noise gets on my nerves from the belt at ~ 20-25km / h (~ 15mph). I once lowered the tension, then it got better, but after some time the annoying noise came back anyway. Will replace the belt with the chain kit as soon as the belt is broken. And you think the high RPM first stage reduction noi...
by derb
Dec 11 2018 6:48am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Along with the chain re-tension standard moto maintenance, don't forget to check the primary belt reduction tension as well, as it also relaxes a bit as the belt wears in. The noise gets on my nerves from the belt at ~ 20-25km / h (~ 15mph). I once lowered the tension, then it got better, but after...
by derb
Dec 11 2018 6:40am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Brakes: I had the MT5 in front to test (I had borrowed) and that worked great. The braking force was great and a huge difference to the original brake. However, I have now got a Shimano Saint because I like the shorter levers. The braking force is even higher :twisted: Derb, forgot to ask you, any ...
by derb
Dec 11 2018 6:33am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Offroader wrote:
Dec 10 2018 11:47am
Without Regen you will eat bicycle brake pads unfortunately. Surprised you got only less than 200 miles out of them, but they do go quickly without regen.
I have Regen. For that I only need to go off the gas. At about 1500km I had to change the rear brake pads.
by derb
Dec 10 2018 5:18am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

One week ago I reached the 2000km (1250 Miles). 20181205_220836.jpg short feedback: - Every 200-300km / 125-188 miles I have to retighten the chain. - I had to renew the brake pads - Spoke tension had to be re-tensioned. - The steering head bearing makes crackling noises and must be replaced. The Su...
by derb
Dec 06 2018 3:06am
Forum: E-Bike Non-hub Motor Drives
Topic: SURRON LB: RESEARCH & DEVELOPEMENT
Replies: 179
Views: 16807

Re: SURRON LB: RESEARCH & DEVELOPEMENT

pipeking wrote:
Dec 03 2018 5:40pm
From Left: Artrax 90/90-19,
Can you tell me the weight of the tire?
by derb
Dec 05 2018 9:07am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

If you add an extender battery of 16s4p and put it in parallel. I believe this means it will take half the current load, and the 16s11p pack inside the bike will take the other half. You will really be pushing those Sanyo cells at the peak discharge, which is 10 amps per cell. Since the bike only d...
by derb
Dec 04 2018 8:26am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Performance with the X controller Idling full throttle ~ 0.8kW Full throttle uphill ~ 4.5kW Eco full throttle uphill ~ 2,9kW Measured between full battery and controller. At the end of the battery life, the power goes down to 3.7kW linear. Depending on the state of charge of the battery. I'm thinkin...
by derb
Nov 19 2018 7:09am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

At the end of the day the pf is a budget cell......anything above 3A per cell will reduce the overall output significantly. What does the controller pull max? This Battery Gauge ( https://de.aliexpress.com/item/100A-New-TK15-Professional-Precision-Battery-Tester-for-LiFePO-Coulomb-Counter-Free-Ship...
by derb
Nov 19 2018 6:47am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Very nice, Would you happen to have the original Sur-Ron tires around, could you weigh one of them and post the weight. Do you know the weight of the new tires you put on? How do you find the feel of these tires compared to the original tires when riding on the street? Like can you feel the knobs m...
by derb
Nov 16 2018 6:06am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

@Allex Yes, these are Zefal FM30 fenders. I cut open a fatbike tube and used it to protect the suspension. I had tried the 58 tooth sprocket with the stock controller, but I did not like the reduced speed at the top. From my feeling, the X controller has the same punch at low speed with the 48 teeth...
by derb
Nov 16 2018 3:50am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

New Tires:
Pirelli Scorpion
Tested on wet trails yesterday. I am very satisfied with the grip

20181112_223928.jpg
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20181112_224143.jpg
20181112_205211.jpg
20181112_185804.jpg
by derb
Nov 16 2018 3:43am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

Allex wrote:
Nov 16 2018 3:36am
How many Amps did you see during peaks?
It is very difficult to see this small digit on the display when accelerating hard.
I had once seen 79A, but did not really look often at it. I have the X-Controller.
by derb
Nov 16 2018 3:35am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

I installed a battery meter ( https://de.aliexpress.com/item/100A-New-TK15-Professional-Precision-Battery-Tester-for-LiFePO-Coulomb-Counter-Free-Shipping-12003194/32703947698.html?spm=a2g0x.search0104.3.1.6e7957ceu5Dc1z&ws_ab_test=searchweb0_0,searchweb201602_3_10320_10065_10068_318_10547_319_10548_...
by derb
Sep 28 2018 2:38am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4015
Views: 314106

Re: Sur-Ron - New Mid drive Bike

After several great rides, the first defect has now occurred. The battery percent indicator is dead. The last time it was turned on it was a bit pixelated to see how much% of the battery had (see picture), but now nothing comes. Have tried all the tricks - everything off, cable off, press the button...
by derb
Jul 09 2018 5:05am
Forum: E-Bike Technical
Topic: Kelly Controller - after programming engine is turning backwards with high current at low load
Replies: 1
Views: 238

Kelly Controller - after programming engine is turning backwards with high current at low load

Could you please help me? Following problem: I have changed two parameters and now the engine is turning backwards and has a high current at low load. In addition, it runs at idle speed much faster than before. What I did: On the Kelly Controller I reduced Max Regeneration Current from 75% to 40%. A...
by derb
Jan 30 2017 4:29am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 699998

Re: Cycle Analyst V3 preview and first beta release

Hello, I have a Kelly KBS-E controller with ~ 100A battery current and would like to have a Eco mode with 40A via the Cycle Analyst (3.1). I have installed the external shunt SH-1000-CA3 and the throttle signal is given by the Cycle Analyst to the Kelly Controller. If I set no limit everything work...
by derb
Jan 30 2017 4:25am
Forum: E-Bike Technical
Topic: Programming Kelly KBS Controller
Replies: 12
Views: 1779

Re: Programming Kelly KBS Controller

The programming works with a TTL to RS232 converter (Max232).
There is a circuit diagram for this on the first page of the data sheet of the Max232.