Search found 13673 matches

by John in CR
Oct 20 2019 12:36pm
Forum: Battery Technology
Topic: LiFePO4 / Li ion Parallel pack, A123 hybrid for HighPower
Replies: 25
Views: 549

Re: LiFePO4 / Li ion Parallel pack, A123 hybrid for HighPower

I've done exactly that with 23s LiFePo4 packs and old 20s packs, and it's worked just as expected. The 20s pack helped keep the higher voltages stiffer and then the A123's took over the heavy lifting. That was without BMS's other than my human BMS. I would choose a ratio and top of charge voltage t...
by John in CR
Oct 19 2019 7:34pm
Forum: Battery Technology
Topic: Battery Temperature Management
Replies: 5
Views: 131

Re: Battery Temperature Management

...it will be a workout moving a pack like this. Less things to break on the bike as well, good to keep the moving parts count down to the suspension and a few bearings... Exactly, on both counts. Major risk of something bad happening to the most expensive part of your ebike, the battery. I mount m...
by John in CR
Oct 19 2019 7:16pm
Forum: E-Bike General Discussion
Topic: Reliability - Are there numbers?
Replies: 18
Views: 477

Re: Reliability - Are there numbers?

I do not mind bike maintenance. Brake pads, chains, cassettes, (non-motorized) hubs, headsets, …. You name it, I'll do it. If I cannot do it my bike shop can. Hasn't been happening for about five years by now. I stopped using bicycle parts years ago due to their high maintenance requirements. Even ...
by John in CR
Oct 19 2019 5:53pm
Forum: E-Bike Technical
Topic: Most powerful hub motor below 5lbs
Replies: 21
Views: 529

Re: Most powerful hub motor below 5lbs

My bikes are solely for city riding. I make them all rigid. No shocks. So it's all unsprung mass. 🙃 If you ride instead of carry, then weight is of little significance. If carrying is a big enough deal for a few pounds to really matter, then you should be building electric skateboards instead of eb...
by John in CR
Oct 19 2019 5:46pm
Forum: Battery Technology
Topic: LiFePO4 / Li ion Parallel pack, A123 hybrid for HighPower
Replies: 25
Views: 549

Re: LiFePO4 / Li ion Parallel pack, A123 hybrid for HighPower

I've done exactly that with 23s LiFePo4 packs and old 20s packs, and it's worked just as expected. The 20s pack helped keep the higher voltages stiffer and then the A123's took over the heavy lifting. That was without BMS's other than my human BMS. I would choose a ratio and top of charge voltage th...
by John in CR
Oct 19 2019 5:24pm
Forum: Battery Technology
Topic: Battery Temperature Management
Replies: 5
Views: 131

Re: Battery Temperature Management

Park the cars outside, or just get rid of them, and then your garage won't get so hot. If that or moving to somewhere with a better climate isn't an option, I certainly wouldn't make that size pack removable. Long before that hassle my bike would get an indoor parking, or it's own space in the garag...
by John in CR
Oct 16 2019 9:41am
Forum: General Discussion
Topic: Crash Thread - lucky
Replies: 31
Views: 1246

Re: Crash Thread - lucky

Sidwalks are the most dangerous place to ride. That's why they're called side walks not siderides. Not around here. Here, sidewalks are, most of the time, the safest places to ride. One just needs to go slow. Going slow is better then being hit by a car. Around here if you ride in the street during...
by John in CR
Oct 14 2019 9:28pm
Forum: General Discussion
Topic: Crash Thread - lucky
Replies: 31
Views: 1246

Re: Crash Thread - lucky

Sidwalks are the most dangerous place to ride. That's why they're called sidewalks not siderides.
by John in CR
Oct 12 2019 6:30pm
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

The dc source has to be lower voltage than the battery on the bike for it to work. I knew that, and I believe it's best to have it not too much below the packs I want to charge for best efficiency. The lowest voltage on my bikes is 60V nominal, so the most likely voltage for the home based pack wou...
by John in CR
Oct 12 2019 7:59am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Anyone using solar panels to charge thru Nuc controller?

...stick my bike on the back of my truck... I feel sorry for your bike, embarrassing it like that. No bike of mine has ridden on or in a gasser since LFP came down for a visit 9 years ago, when none of mine had enough range to reach the beach. It's time to step up and build some electric transporta...
by John in CR
Oct 11 2019 6:20am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Anyone using solar panels to charge thru Nuc controller?

Has anyone using solar panels as the power supply for charging via the Nucular controllers' Converter function? Would there be any special considerations or would the controller operating as a converter effectively function as a charge controller enabling the use of panels direct with only a diode ...
by John in CR
Oct 10 2019 9:36pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 797
Views: 67266

Re: Nucular electronics - complete kit for ev! [beta]

I tried using a phone to post and end up with a double post. I don't know phone lovers handle the tiny screens and horrendous keyboards. 1st and last time I connect here by phone ends in this edit by PC, since too late to delete. Upper right corner of the post, see the X? That's delete. Once you se...
by John in CR
Oct 09 2019 8:42pm
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Anyone using solar panels to charge thru Nuc controller?

Has anyone using solar panels as the power supply for charging via the Nucular controllers' Converter function? Would there be any special considerations or would the controller operating as a converter effectively function as a charge controller enabling the use of panels direct with only a diode a...
by John in CR
Oct 09 2019 6:24am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 376
Views: 46004

Re: Suzuki GSX-R e899 K2

That torque constant equals a Kv of 7rpm/volt, so you'll need to run a pretty high voltage to get to the rpm you want, though with that amount of torque how much gear reduction do you really need? The low winding resistance supports the level of current you'll need to achieve that torque, especially...
by John in CR
Oct 08 2019 9:57pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 376
Views: 46004

Re: Suzuki GSX-R e899 K2

If it's a BLDC motor you need the Kv and the expected phase-to-phase resistance. Then you can get an idea of the current handling and torque potential of the motor. Kv tells you exactly the torque per amp the motor will make, which I'd trust long before I would the manufacturers hype. Regarding your...
by John in CR
Oct 08 2019 9:11pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Chinese Pit Bike Conversion | Nucular 12F | LMX-Motor 60mm | 18s 16Ah LiPo
Replies: 3
Views: 266

Re: Chinese Pit Bike Conversion | Nucular 12F | LMX-Motor 60mm | 18s 16Ah LiPo

Looks like a nice little donor for an e-conversion. If the swingarm is steel, I'd definitely weld the motor mount to the swingarm in front and below the pivot point. The purpose would be to eliminate chain issues and make it as quiet as possible, as well as obtaining the anti-squat attributes of mot...
by John in CR
Oct 08 2019 6:43pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 797
Views: 67266

Re: Nucular electronics - complete kit for ev! [beta]

I tried using a phone to post and end up with a double post. I don't know phone lovers handle the tiny screens and horrendous keyboards. 1st and last time I connect here by phone ends in this edit by PC, since too late to delete.
by John in CR
Oct 08 2019 6:42pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 797
Views: 67266

Re: Nucular electronics - complete kit for ev! [beta]

So, if I understand correctly, some smart guys want to pay in advance to get ahead of others ... :roll: As far as I know, you pay when your order is about ready to ship. I tried to pay in advance, though not to speed things up, and was told no. Nucular has chosen a route quite different from Adaptt...
by John in CR
Oct 08 2019 2:21pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 797
Views: 67266

Re: Nucular electronics - complete kit for ev! [beta]

To both John in CR and Electric God, when did you get on the waiting list? They r building the 12F's as quickly as possible now that they r out of beta. I ordered mine in late july and was told 60-90 days, but were ready quicker. I 'll wait to order 24's until after more r out there in use. In the ...
by John in CR
Oct 08 2019 2:00pm
Forum: E-Bike Technical
Topic: Best Variable Regen Input ???
Replies: 8
Views: 260

Re: Best Variable Regen Input ???

Interesting solution, but I'd prefer independent operation to minimize brake wear. Plus I am a cheap and simple type.
by John in CR
Oct 08 2019 10:22am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

you could use one switch if you add diode. from controller EN -|>|- to switch (dc-dc gnd) otherwise you will apply high voltage on EN input and controller will be probably dead. really dead. very very. not fun to fix. i warned you. im working on 3A dc-dc for controllers Yes actually adding a jumper...
by John in CR
Oct 08 2019 9:28am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

I'm probably just showing what an electrical dumba$$ I am, but here goes? Since everything shares a common ground to battery negative, is there any reason I can't put my keyswitch to complete the circuit to ground for my DC/DC converter as well as K1 to gnd? I'm sticking with fuses as my protection ...
by John in CR
Oct 07 2019 9:33pm
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

A new Nuk owner here with the arrival of 3 of the 12F's. 2 will drive a 6phase (dual 3 phase actually) HubMonster, and one is going on my son's 3kw generic hubbie Phazor frame build. I already have CA3's and use will often be in heavy rain conditions, so I picked up only one display for use to set ...
by John in CR
Oct 07 2019 9:25pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 797
Views: 67266

Re: Nucular electronics - complete kit for ev! [beta]

Give us some news soon to give us your impressions Will do. I have good long-term energy consumption info and will connect a pair to one of my HubMonsters using a CA to measure, so at least with my motors, we'll have some good data about efficiency gains using Nuks. Hopefully reports so far hold tr...
by John in CR
Oct 07 2019 5:11pm
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 182
Views: 11338

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

A new Nuk owner here with the arrival of 3 of the 12F's. 2 will drive a 6phase (dual 3 phase actually) HubMonster, and one is going on my son's 3kw generic hubbie Phazor frame build. I already have CA3's and use will often be in heavy rain conditions, so I picked up only one display for use to set c...