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Old 08-07-17, 10:33 PM   #26
linberl
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Oh no!!! Well, BF will totally take care of you, but what a bummer. Post the problem and solution, will you? It's good to get a sense of how reliable this stuff is.
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Old 08-08-17, 09:44 PM   #27
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My first call went to bike Friday. One service technician didn't know much about electric assist. They concluded that I should call grin technologies in Canada. The telephone algorithm at grin said I should contact them by e-mail. I called bike Friday back and said I thought they should have taken care of these issues since they had a significant profit margin from electrical assist. BF agreed that they should send out a new controller. Not long after that the Canadians begin an email exchange with me during which we solved the problem.

The batteries are far smarter than I am. They will not accept a charge if the battery has not been switched on. Any battery not turned on will prevent another battery further downstream from the controller from providing juice to the system. A battery turned off will still show the user its level of charge if the user presses the power button--such a display of the LEDs misled me into thinking that the battery was turned on.

Maybe Bike Friday has videos demonstrating how to use these things. If so, I missed seeing a the link in my email, nor did I find the essentials in the paperwork that came with. Nonetheless, I was glad to have help from Grin Technologies to sort this out.
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Old 08-08-17, 10:21 PM   #28
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Originally Posted by kayak4water View Post
My first call went to bike Friday. One service technician didn't know much about electric assist. They concluded that I should call grin technologies in Canada. The telephone algorithm at grin said I should contact them by e-mail. I called bike Friday back and said I thought they should have taken care of these issues since they had a significant profit margin from electrical assist. BF agreed that they should send out a new controller. Not long after that the Canadians begin an email exchange with me during which we solved the problem.

The batteries are far smarter than I am. They will not accept a charge if the battery has not been switched on. Any battery not turned on will prevent another battery further downstream from the controller from providing juice to the system. A battery turned off will still show the user its level of charge if the user presses the power button--such a display of the LEDs misled me into thinking that the battery was turned on.

Maybe Bike Friday has videos demonstrating how to use these things. If so, I missed seeing a the link in my email, nor did I find the essentials in the paperwork that came with. Nonetheless, I was glad to have help from Grin Technologies to sort this out.
Interesting. One of the reasons I am attracted to the Grin system is I watched a video the main guy did about their batteries. One of the only systems that has a "sleep" mode. Normally not using a lithium battery regularly is bad for the battery. My intended use of the system would be maybe once a month or every 6 weeks. Their batteries in sleep mode discharge a minimal amount and can be left in sleep mode for 10 years, whereas regular lithium batteries are on or off and discharge faster when off and can get ruined. His video showed all the various display codes - very sophisticated. Glad you got it resolved!
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Old 08-09-17, 10:29 AM   #29
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Originally Posted by kayak4water View Post
My first call went to bike Friday. One service technician didn't know much about electric assist. They concluded that I should call grin technologies in Canada. The telephone algorithm at grin said I should contact them by e-mail. I called bike Friday back and said I thought they should have taken care of these issues since they had a significant profit margin from electrical assist. BF agreed that they should send out a new controller. Not long after that the Canadians begin an email exchange with me during which we solved the problem.

The batteries are far smarter than I am. They will not accept a charge if the battery has not been switched on. Any battery not turned on will prevent another battery further downstream from the controller from providing juice to the system. A battery turned off will still show the user its level of charge if the user presses the power button--such a display of the LEDs misled me into thinking that the battery was turned on.

Maybe Bike Friday has videos demonstrating how to use these things. If so, I missed seeing a the link in my email, nor did I find the essentials in the paperwork that came with. Nonetheless, I was glad to have help from Grin Technologies to sort this out.
Cool! Glad it was a simple issue. Hopefully Bike Friday will learn more about diagnosing these problems in the future.
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Old 08-22-17, 09:51 PM   #30
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Addendum

I began to have problems again with the system going black on applying the throttle. Justin at ebikes.CA said the system is designed for three batteries and I should also not allow more than 15 amps of current to flow from the batteries to the motor. Luckily, I had bought two extra batteries and I added one to the two already in line. This completely solved the problem. Don't ask why this system is sold with two batteries.

Re: how many batteries will fit in the $80 LeZyne bag. Three fit tightly--four will never fit.

Last edited by kayak4water; 08-22-17 at 09:52 PM. Reason: Add
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Old 08-25-17, 04:19 PM   #31
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I began to have problems again with the system going black on applying the throttle. Justin at ebikes.CA said the system is designed for three batteries and I should also not allow more than 15 amps of current to flow from the batteries to the motor. Luckily, I had bought two extra batteries and I added one to the two already in line. This completely solved the problem. Don't ask why this system is sold with two batteries.

Re: how many batteries will fit in the $80 LeZyne bag. Three fit tightly--four will never fit.
So they are saying the minimum # of batteries to make it run is 3? They sell a kit for my NWT I've been looking at and it doesn't indicate that at all. Thanks for the heads up - I will clarify with them if I decide to go that direction. And how do you control the # of amps flowing from the batteries to the motor? Is it always less than 15 with 3 batteries or is there some other thing you have to control?
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Old 08-25-17, 07:23 PM   #32
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Selling the kit with 2 batteries when the system requires 3 (Ligo 98 wH) batteries does bug me. I had sent Justin a clip showing that the system shut down, to which he replied, that I was running the system with only one or two batteries--he knew without my telling him--maybe the webmaster hasn't updated the webpage yet. No explanation for why the system seemed to run well with two batteries for 2-3 weeks, but I've run it now for three days with three batteries now without issue. I have a 4th battery just in case the number changes again.

If you browse the ebikes.ca site, the eZee LED cycle analyst has two rows of five LED's--the lower row tells how much current (amps) will flow to the motor. You control Current flow with the up/down arrow at the right of the two LED rows. One, two, three and four illuminated LED's indicate maximum 5, 10, 15, and 20 amps of current that can flow, respectively. Five LEDs lit mean unlimited current can flow, per the manual that you can access for that cycle analyst. The # of batteries doesn't affect the current flow.
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Old 08-25-17, 08:48 PM   #33
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Selling the kit with 2 batteries when the system requires 3 (Ligo 98 wH) batteries does bug me. I had sent Justin a clip showing that the system shut down, to which he replied, that I was running the system with only one or two batteries--he knew without my telling him--maybe the webmaster hasn't updated the webpage yet. No explanation for why the system seemed to run well with two batteries for 2-3 weeks, but I've run it now for three days with three batteries now without issue. I have a 4th battery just in case the number changes again.

If you browse the ebikes.ca site, the eZee LED cycle analyst has two rows of five LED's--the lower row tells how much current (amps) will flow to the motor. You control Current flow with the up/down arrow at the right of the two LED rows. One, two, three and four illuminated LED's indicate maximum 5, 10, 15, and 20 amps of current that can flow, respectively. Five LEDs lit mean unlimited current can flow, per the manual that you can access for that cycle analyst. The # of batteries doesn't affect the current flow.
Thanks, that was really helpful!
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Old 08-25-17, 11:07 PM   #34
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One quirk about the eZee LED cycle analyst I forgot to mention: it exhibits a moderate delay in telling the true level of juice in my batteries--after a hillclimb, it may say I have 40% remaining and I'll look minutes later and see a revision to 80%
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Old 08-26-17, 09:36 AM   #35
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I thought Bike Friday sent new bike owners an adjustable stem along with the frame. Then the rider could dial in the right amount of height and extension, send the adjustable stem back to BF, and only then a stem was made to order. At least this is what happened with me when I purchased a bike from BF.

Which was a what? pocket Rocket, that is probably still true, but this is not about that kind/model of bike.
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Old 08-27-17, 03:46 AM   #36
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.. that is probably still true, but this is not about that kind/model of bike.
Could still be a good idea- at least as an option!
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