Search found 36 matches

by lwik
Dec 09, 2017 4:58 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

A good quality beyyery shouldnt have weak cells/other problems after 300cycles....so i question the qyality of the packs you paid so much for. Ask what the problem was. For the same weight as those 22ah LTOs you could carry 60 ah of 18650s which would have 3000Wh of capacity likely lasting you all ...
by lwik
Dec 08, 2017 1:41 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

You are really striking a poor compromise . Double the weight Much bigger volume 2/3 the capacity and range All for a slight reduction in charge time ? As was said early on, your 15ahr pack is capable of dealing with 500W of regen and a 1hr charge occasionally if that is needed. You just have to ma...
by lwik
Dec 08, 2017 12:08 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

You should try this, to save battery life. 1) Actually pedal, 2) try to reduce weight, 3) get in an aerodynamic position like a lower tuck position or semi/full recumbant position 1. I do peddle, always. 2. Lost 18 pounds on this last trip across country, 265 to 247. 3. Love my Surly Ogre mountain ...
by lwik
Dec 07, 2017 10:22 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

LTO are sometimes called supercapacitors, because some models (mostly high end) behave more like capacitors than batteries, the capacitance issue aside. I've seen some that can charge at 60C without damage. LiPo can discharge at that rate, but try to charge it at that rate and you're asking for a f...
by lwik
Dec 07, 2017 4:23 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

Awesome trip! I've been thinking about trying to hit the south pole on a fatbike with a portable solar array. Did you have much trouble with wind wanting to blow the panels around? Were you happy with the performance and durability of those units? Solar panels worked great and they lay flat on the ...
by lwik
Dec 07, 2017 3:49 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

I agree. I spent the last couple days doing lots of research and answers I have gotten back from you guys has pushed me in different directions. Super Capacitors are not the way to do this. After a few people mentioned LTO batteries in this thread and reading up on it I don't understand why these ar...
by lwik
Dec 07, 2017 3:23 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

These are old stock lto, but price is right. Lots of buyers use for super cap replacement. https://endless-sphere.com/forums/viewtopic.php?f=31&t=91735 s-l400-8.jpg Thanks for the Reply, I am just now looking in to and researching these LTO. I think the capacitor path is a bad bath at this point. T...
by lwik
Dec 07, 2017 1:14 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

Short answer: Maybe and sort of. http://www.alibaba.com/product-detail/Ewt-lithium-Titanate-battery-18650-14450_60677808770.html?spm=a2700.7724838.2017115.123.451b583b0tzByg These can charge and discharge around 20C (get one of the bigger ones and we're talking 50Amps), and have multi-thousand cycl...
by lwik
Dec 06, 2017 5:43 am
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Re: Super capacitors to save battery life?

Is it possible to add just enough super capacitors to capture regenerative breaking and also supply that initial boost of power? If you wanted to get fancy and add a dual-link system (i.e. your ultracaps power the motor, and a controlled-current switcher links that to the battery) maybe. But 500 wa...
by lwik
Dec 05, 2017 5:13 pm
Forum: Battery Technology
Topic: Super capacitors to save battery life?
Replies: 34
Views: 512

Super capacitors to save battery life?

Hi, this is more of a question about it being possible. I searched the forum before posting but didn't find the answer. I do a lot of eBike touring and in March I rode the southern tier 3166 miles across America. Last year I have about 5500 miles of touring. I have 2 52v 15AH batteries (lithium) whi...
by lwik
Feb 17, 2017 7:57 pm
Forum: E-Bike Technical
Topic: CA3 Throttle indicator - blinking?
Replies: 1
Views: 174

Re: CA3 Throttle indicator - blinking?

Problem Solved. Incase anyone else makes this mistake and finds this thread. The flashing throttle on the CA3 at start up was caused by incorrectly setting up a 'buffer' for the Throttle input voltage and output. My throttle input at 0% throttle was 0.86v and at 99% throttle it was 4.23 volts. The m...
by lwik
Feb 17, 2017 5:32 pm
Forum: E-Bike Technical
Topic: CA3 Throttle indicator - blinking?
Replies: 1
Views: 174

CA3 Throttle indicator - blinking?

AS the Subject heading said, the computer screen on the Cycle Analyst 3 shows a blinking throttle and the throttle is not engaging the motor? The blinking throttle is indicating a Wide Open Throttle. If I change the screen to the "Diagnostic Screen" and push the throttle I can see it at the starting...
by lwik
Feb 06, 2017 10:23 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Yes, it looks like a single magnet. Those are magnetized so it behaves like two magnets. One end will be north facing the hall and the other end will be south facing the hall. I have some that are like that. Thanks for all your help Fechter! Last question, if you know the answer... I found these 49...
by lwik
Feb 06, 2017 12:15 am
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Hi Again, so the Chinese mail order of 4 throttles came in last night, finally. I opened on up to find out what hall effect sensor it uses and googled it to order more, but the exact number I can not find? From the image included it is "S49EH 606" I can find S49E but I am not sure how close they ar...
by lwik
Feb 05, 2017 9:12 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Hi Again, so the Chinese mail order of 4 throttles came in last night, finally. I opened on up to find out what hall effect sensor it uses and googled it to order more, but the exact number I can not find? From the image included it is "S49EH 606" I can find S49E but I am not sure how close they are...
by lwik
Jan 17, 2017 12:24 am
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Moisture could be backfeeding the full pack voltage into one of the hall sensor pins and frying it. On one of my throttles, I took the body apart and covered all the hall wires with epoxy (potted it). It should be OK to use underwater like that. Inside the body, the wires were exposed where they co...
by lwik
Jan 17, 2017 12:18 am
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Nice looking handlebar setup. I like to split the duties of my right and left hand as well. I have gone moto style on my breaking so my right hand and arm aren't taking all the work of throttle and breaking. I feel less stress on my hands and arms by spiting the duty between them. Before I went mot...
by lwik
Jan 16, 2017 12:06 am
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

IMG_37901.jpg So I ordered 4 left handed throttles Friday. should be a couple weeks I would think till I get them. When they arrive I will open them up and see what Hall sensor they use and order a bunch of those. I ordered a slightly different one then the standard. While riding on my bike trip af...
by lwik
Jan 15, 2017 3:24 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Screen Shot 2017-01-15 at 12.18.11 PM.png So I ordered 4 left handed throttles Friday. should be a couple weeks I would think till I get them. When they arrive I will open them up and see what Hall sensor they use and order a bunch of those. I ordered a slightly different one then the standard. Whi...
by lwik
Jan 12, 2017 2:06 am
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

I killed a throttle with battery voltage. Controller throttle connector had 4 wires, 4th is full batt voltage. When changing connectors I accidentally provided full voltage to the throttle sensor. Maybe your faulty throttles are seeing excess voltage due to moisture affecting the plug? Just an idea...
by lwik
Jan 11, 2017 7:44 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

....I'm with Alan that something else may be going on here? I always thought a sealed photometer would make a better throttle design, I just haven't gotten around to making one yet for testing. :D That was my thought as well, but I have heard things to the contrary that they tend to be less reliabl...
by lwik
Jan 11, 2017 4:54 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

I have replaced the hall sensors in my thumb throttles at least once a year. They wear out. I use 49E Linear Hall sensors from ebay. Also known a SS49E. They are a bit tricky to replace because they are in a small space, and every time you open the throttle you will wear out the plastic so it will ...
by lwik
Jan 11, 2017 4:49 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Do you have a power meter or power switch in your throttle? If so, then the water is probably conducting the battery voltage from that into the sensor, and poof. Disconnecting that and only having 5v, signal, and ground running to the throttle housing would probably fix that. Make sure there are al...
by lwik
Jan 11, 2017 3:07 pm
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Use the dead throttle body to pull a shifter or brake cable that runs into your weatherproof bag or box, where it pulls on any old throttle that still works. Takes some DIY...but no more failed halls from water. Thanks Amberwolf! I did a lot or research last night and I am starting to get the hang ...
by lwik
Jan 11, 2017 1:38 am
Forum: E-Vehicles General Discussion
Topic: Throttle Hall Sensor replacement?
Replies: 38
Views: 1317

Re: Throttle Hall Sensor replacement?

Get a cable-operated throttle, or an old friction shifter or grip shifter (and loosen it up), then run the cable to your bag, where the throttle itself would be mounted inside the bag on a piece of tubing that's secured such that the cable will pull the throttle. I can't remember who had a thread a...