Search found 14125 matches

by John in CR
May 29 2020 2:12am
Forum: Battery Technology
Topic: Real-time cells voltage display instead of BMS
Replies: 2
Views: 40

Re: Real-time cells voltage display instead of BMS

Since you know your pack well and just want to be able to know when that first cell falls off the cliff at 3V, and you run an even number of series cells, have you considered just running 2 voltmeters (one for each half of the pack)? Then when the 2 voltages become different, you'll know a cell is l...
by John in CR
May 29 2020 2:04am
Forum: Battery Technology
Topic: looking for the simplest balancing circuit
Replies: 20
Views: 718

Re: looking for the simplest balancing circuit

I very generally, agree completely with you John, please take the below nit picking as educational only, not at all arguing with you specifically. LiFePo4 needs balance charging Only true for those specific packs that do. The cells in the packs I use stay within +/- 0.005V at all points in their SO...
by John in CR
May 28 2020 9:28pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 342

Re: Want to build something comfortable, but issues with local bike path 'style'

Nice observations Balmorhea and MadRhino, those are exactly the kind of comments that prove the larcenous pricing of higher end bicycle components and parts has almost nothing to do with R&D like cyclists try to use as justification for pricing. Prices are so ridiculously high only because people ar...
by John in CR
May 28 2020 4:40pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 342

Re: Want to build something comfortable, but issues with local bike path 'style'

a few more:
Semi recumbent 6 Giant Revive comfort Ebike.JPG
Semi recumbent 6 Giant Revive comfort Ebike.JPG (56.24 KiB) Viewed 40 times
Semi recumbent 9 BikeE electric.JPG
Semi recumbent 9 BikeE electric.JPG (63.38 KiB) Viewed 40 times
Semi recumbent 7 simple electric.JPG
Semi recumbent 7 simple electric.JPG (39.3 KiB) Viewed 40 times
by John in CR
May 28 2020 4:36pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 342

Re: Want to build something comfortable, but issues with local bike path 'style'

And some more:
Semi recumbent 1.JPG
Semi recumbent 1.JPG (35.2 KiB) Viewed 40 times
Semi recumbent 2  Evox.JPG
Semi recumbent 2 Evox.JPG (50.98 KiB) Viewed 40 times
Semi recumbent 4 French leaning delta trike.JPG
Semi recumbent 4 French leaning delta trike.JPG (84.54 KiB) Viewed 40 times
Semi recumbent 5 Arnies Luxombent.JPG
Semi recumbent 5 Arnies Luxombent.JPG (40.55 KiB) Viewed 40 times
by John in CR
May 28 2020 4:27pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 342

Re: Want to build something comfortable, but issues with local bike path 'style'

Here are some comfortable feet forward semi-recumbent and recumbent comfort cruisers to salivate over including some narrow leaning trikes.
Semi recumbent 3 Kamils electric Velokraft.JPG
Semi recumbent 3 Kamils electric Velokraft.JPG (48.31 KiB) Viewed 43 times
Bram Smit leaning Delta 2.JPG
Bram Smit leaning Delta 2.JPG (60.77 KiB) Viewed 43 times
Compact tandem pilot is recumbent by Fitek.JPG
Compact tandem pilot is recumbent by Fitek.JPG (26.32 KiB) Viewed 43 times
by John in CR
May 28 2020 3:51pm
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 48
Views: 4751

Re: Favourite high power hub motor?

The highest geared motor would be the MAC. Not true, not even close. I've seen an electric motorcycle with a geared hubbie. I haven't been able to track down the manufacturer of the motor, but once I do I'll definitely share it on the forum. Do you think it has steel gears inside it? I'm sure it do...
by John in CR
May 28 2020 5:05am
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 48
Views: 4751

Re: Favourite high power hub motor?

markz wrote:
May 27 2020 11:17pm
The highest geared motor would be the MAC.
Not true, not even close. I've seen an electric motorcycle with a geared hubbie. I haven't been able to track down the manufacturer of the motor, but once I do I'll definitely share it on the forum.
by John in CR
May 28 2020 4:56am
Forum: E-Bike General Discussion
Topic: Would like to make an eTrike less prone to tipping over
Replies: 30
Views: 451

Re: Would like to make an eTrike less prone to tipping over

Contrary to popular belief delta trikes can be just as stable as a tadpole. Unless it's a leaner it's all about the location of the CG. There's some good info here https://rqriley.com/the-dynamic-stabili ... lications/
by John in CR
May 27 2020 7:23pm
Forum: General Discussion
Topic: What's wrong with youtube imbeds?
Replies: 14
Views: 227

Re: What's wrong with youtube imbeds?

HK12K wrote:
May 27 2020 1:08pm
XP? Nobody supports it because it's been depreciated and is a huge security risk both for yourself and everyone else on the internet.
To have a security risk your computer must have sensitive info or something of value stored on it or accessed by that computer.
by John in CR
May 27 2020 7:12pm
Forum: Battery Technology
Topic: looking for the simplest balancing circuit
Replies: 20
Views: 718

Re: looking for the simplest balancing circuit

I very generally, agree completely with you John, please take the below nit picking as educational only, not at all arguing with you specifically. LiFePo4 needs balance charging Only true for those specific packs that do. The cells in the packs I use stay within +/- 0.005V at all points in their SO...
by John in CR
May 27 2020 12:49pm
Forum: General Discussion
Topic: What's wrong with youtube imbeds?
Replies: 14
Views: 227

Re: What's wrong with youtube imbeds?

It must be my expired version of Chrome, since imbeds work on my old Firefox. I can't update either since they don't support XP. Mine isn't the black blank screen issue as I see videos fine going to youtube, just not these imbeds. I just see a white box for imbedded yt vids here on the forum. Java s...
by John in CR
May 27 2020 1:05am
Forum: E-Bike General Discussion
Topic: Half twist throttle with sticky 3sp ( beer ) ?
Replies: 12
Views: 179

Re: Half twist throttle with sticky 3sp ( beer ) ?

Do like I used to do for Mardi Gras and get a large insulated bottle with straw and a strap to go around your neck. Add a 5th of 100 proof Southern Comfort and as much ice as will fit. Then add more ice later as the level allows. It will last all day, but be careful to go slow with it especially ear...
by John in CR
May 27 2020 12:50am
Forum: General Discussion
Topic: Thoughts? Ebike ticketed/conviction upheld (Canada)
Replies: 139
Views: 2430

Re: Thoughts? Ebike ticketed/conviction upheld (Canada)

The price they are charging for a sub $1k cost bike is larcenous. Shipping and duty drive the price of imported goods to the moon. If they're a brick and mortar retailer rent is astronomically high as well, in addition to high prices for related overhead. Plus sales taxes totaling 12% on top (in BC...
by John in CR
May 26 2020 7:11pm
Forum: General Discussion
Topic: What size wrench is required for M10 sirloc nuts?
Replies: 11
Views: 169

Re: What size wrench is required for M10 sirloc nuts?

With mostly flat terrain and some human assist it will go a long way. BTW, they probably aren't nuts for a 10mm bolt. The axle flats are 10mm which are cut into a significantly larger axle, so a 17mm wrench sounds small. Don't you have a crescent wrench, which works fine in those larger sizes. If yo...
by John in CR
May 26 2020 6:59pm
Forum: E-Bike General Discussion
Topic: The joy of causing despair and confusion
Replies: 22
Views: 1704

Re: The joy of causing despair and confusion

That with Volt or Ford cells, John ?? That montage of commute clips was on my little commuter rocket with a MidMonster motor in 16"OD scooter wheel pushed by dual Zombiess 18fet 4115 controllers at 75A battery side limits fed by 31 Ford cells in series. That thing has so much thrust using the small...
by John in CR
May 26 2020 6:28pm
Forum: E-Bike General Discussion
Topic: Can't Get #@!!@ Tire On Rim
Replies: 33
Views: 573

Re: Can't Get #@!!@ Tire On Rim

Soapy water is your friend. I can't imagine any bicycle tire being that difficult. You should try a 13" scooter tire. Since I found a tire repair shop nearby that does it for less than $3, I save myself the aggravation. The worker there loves me, because mine are so simple for him, and I talked him ...
by John in CR
May 26 2020 6:02pm
Forum: Battery Technology
Topic: looking for the simplest balancing circuit
Replies: 20
Views: 718

Re: looking for the simplest balancing circuit

That may change once my packs get 6 or 8 years of service, but by then good BMS's should be cheap and reliable. Plus I could always go the simple route for protection and run 2 volt meters on my packs (one on the top half and one on the bottom half). ................. I run in the 100's of amps on ...
by John in CR
May 26 2020 4:03am
Forum: General Discussion
Topic: What's wrong with youtube imbeds?
Replies: 14
Views: 227

What's wrong with youtube imbeds?

All I see now are white boxes instead of the imbedded youtube video.
by John in CR
May 26 2020 2:11am
Forum: Battery Technology
Topic: looking for the simplest balancing circuit
Replies: 20
Views: 718

Re: looking for the simplest balancing circuit

"The simplest" is to use batteries that are good enough to not need balancing. I agree. However, I'd still prefer to use balancing charger or BMS during first few months of using new battery. I finished recently my 1 kW charger with built-in 100A BMS for my 24S6P A123 26650 battery. https://i.imgur...
by John in CR
May 26 2020 1:22am
Forum: General Discussion
Topic: Thoughts? Ebike ticketed/conviction upheld (Canada)
Replies: 139
Views: 2430

Re: Thoughts? Ebike ticketed/conviction upheld (Canada)

3 years ago I bought new electric Ford Focus, and parked my ebike for good. But things were already getting sketchy in Toronto for ebikers. Too many idiots riding these stupid scooters all over the place. Sidewalks, drunk, no Dl, etc. Now I see guys on these things easily going 50 km/h in the city....
by John in CR
May 26 2020 1:18am
Forum: General Discussion
Topic: What size wrench is required for M10 sirloc nuts?
Replies: 11
Views: 169

Re: What size wrench is required for M10 sirloc nuts?

I am on the large Clydesdale size so I got the motor used for cargo bikes. ;-) I hope your terrain is flat and you're not expecting fun level performance. Did you inform Grin about the load you need to haul and terrain to be tackled? What size wheel diameter did you choose?...not 26" or larger I ho...
by John in CR
May 25 2020 2:24am
Forum: E-Bike Technical
Topic: Help please! I have a QS 205 v3 motor paired with a SVMC 72200 Sabvoton powered by a 72v 50ah 300a continuous BMS.
Replies: 16
Views: 267

Re: Help please! I have a QS 205 v3 motor paired with a SVMC 72200 Sabvoton powered by a 72v 50ah 300a continuous BMS.

By "shuts down" do you mean everything turns off? If so, then it sounds like the battery is shutting down due to a low cell or a BMS problem. You need to check the battery to see that it is properly balanced. Is it all enclosed with only the primary battery leads coming out of the pack, or can you g...
by John in CR
May 25 2020 2:12am
Forum: E-Bike Technical
Topic: 2wd hub motor build
Replies: 9
Views: 257

Re: 2wd hub motor build

I ran a lot of simulations using different combinations of motors. Will someone check my work. When you use dual motors are you supposed to put the total weight on each motor or split it between the motors. I put 330 lbs on the front motor and 180 lbs on the front one. Don't know if this is the way...
by John in CR
May 25 2020 2:03am
Forum: E-Bike Technical
Topic: 2wd hub motor build
Replies: 9
Views: 257

Re: 2wd hub motor build

Any suggestions? Use a mid drive instead of two hubs... :wink: +1...Offroad and slow steep climbs is no place for a hubbie, though a mid-drive rear for most of the power plus a hubmotor on the front for 2wd makes sense and with the right motor and wheel size, the front wouldn't need active cooling,...