Search found 1435 matches

by Spacey
Jan 06 2015 11:58am
Forum: Battery Technology
Topic: A123 20AHr Pouch Cell Battery Build & Info Thread
Replies: 985
Views: 119541

Re: A123 20AHr Pouch Cell Battery Build & Info Thread

PLease people do not buy anything from Victpower, I bought a load of A123 36v and 48v 20Ah battery packs from them. All of them had the copper + power lead solder to aluminium lol...of course the solder would not take and every single pack (over 15 of them) the power lead had fallen off in transit. ...
by Spacey
Jul 16 2014 6:52am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

Hi All, I had hoped for my first post to be of a completed conversion of my Polygon Heist with a Bafang BBS02. It appears however that I've struck a problem with the install - the axle sleeve can only be inserted 40mm in to the bottom bracket shell before it gets stuck (see pic). There is no obstac...
by Spacey
Jul 16 2014 4:47am
Forum: E-Vehicles General Discussion
Topic: Holy mother of....acceleration
Replies: 15
Views: 1415

Holy mother of....acceleration

I might be late in the game seeing this vid (May 2014) but damn that rider is super human not to mention the bike!

by Spacey
Jul 10 2014 1:20pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

Miles wrote:Hi Spacey,

This isn't the place for sales pitches.

Feel free to start a thread in the For Sale section........
Yep, sorry Miles... just seemed appropriate for this thread due to many people waiting on them. Will stick to the For Sale thread for future stuff :wink:
by Spacey
Jul 10 2014 6:02am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

Hi Guys, The new V2 Updated Bafang 750W mid drive motor kits are now in stock and physically at my shop :P The controllers have been upgraded from 6 Fets to 9 Fets so should run cooler. £449 Order from here: http://www.custom-ebikes.com/bafang-bbs ... ive-motor/ Paypal, Debit an Credit cards accepte...
by Spacey
Jun 26 2014 4:55pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: YZF600R Thundercat EV
Replies: 121
Views: 25344

Re: YZF600R Thundercat EV

I'm building a monster 96v pack from 18650 Samsung 22p cells for my Cagiva Mito 125 build.

Not sure I would want that much Lipo under my balls, you sir are a brave man :D
by Spacey
Jun 25 2014 3:46pm
Forum: Battery Technology
Topic: Top of charge voltage for home based battery???
Replies: 3
Views: 341

Re: Top of charge voltage for home based battery???

I would imagine a once a month full charge left on for a few days to balance a pack that has been used a lot at 80% charge. The BMS would not have been able to balance any weak/strong cells and none would have reached the balance voltage threshold.
by Spacey
Jun 24 2014 2:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

This was always a problem when using those meters, the extra length of cable (many times longer than normal) used to run from the battery to the power meter then all the way back to the controller. Thank goodness for the Cycle Analyst, if you could take the LCD part of the power meter and mount that...
by Spacey
Jun 24 2014 7:03am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

After a very long absence from the forum whilst I left my job to start my company I thought I would jump in this thread briefly.... I have UK stock arriving within a week arriving at our depot of the new 9 Fet V2 750W Bafang mid drive kit. UK delivery is free and Europe delivery at cost. Loving thes...
by Spacey
Apr 12 2014 3:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

I'm a few miles from Stonehenge, just off the A303. Just pop the controller or the whole motor in the post and I'll program it for free, just sort me out on the return postage. Will be a lot cheaper if you just send the controller part. Don't worry, I won't keep it, been on this forum for a looooon...
by Spacey
Apr 10 2014 2:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

I'm a few miles from Stonehenge, just off the A303. Just pop the controller or the whole motor in the post and I'll program it for free, just sort me out on the return postage. Will be a lot cheaper if you just send the controller part. Don't worry, I won't keep it, been on this forum for a looooong...
by Spacey
Apr 10 2014 2:21pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

I would say the Mac motor but unless you are doing big hill climbs where max power is needed all the time it isn't a constant 25A pull on the battery pack. We tested the BMS overload on the battery and it does cut in at around 28A if I remember correctly, so does a great job of protecting the cells....
by Spacey
Apr 10 2014 12:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

25A is doable for sure, recently built a silly fast off road 8T MAC with Cycle Analyst v3 for a customer and the new battery packs of Cellmans. It's been running really well with the Infineon 9 Fet controller and CA limiting the max amps. Lot's of power and 32mph is plenty fast enough for a mountain...
by Spacey
Apr 10 2014 12:27pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

What I would not be happy doing is overclocking the controller, it will throw up an error anyway if you try to get more power out of it than it is designed for. Which if you think about it is a good thing, how many motors and controllers have we all blown up due to pushing them just that bit beyond ...
by Spacey
Apr 10 2014 12:14pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

Unfortunately part of my distribution deal with Bafang is that only the dealers can have the cable and new software. I would of course be more than happy to program your controller for you for just the return postage cost. You just need to unscrew the controller part of the motor, should fit in a ji...
by Spacey
Apr 10 2014 12:07pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 649814

Re: New Bafang Crank-drives

I've got only 2 x 250w 36v and 1 x 48v 750w Bafang mid drive kits left in stock.

More on the way though, the amps can be limited in software and as long as you are careful when inserting the motor into the crank tube you should not cause any damage to the threads.
by Spacey
Feb 27 2014 12:29pm
Forum: E-Bike General Discussion
Topic: Tc80 burnt...
Replies: 28
Views: 2133

Re: Tc80 burnt...

Lovely bike Sacko, hats off to you. I've been somewhat occupied with other things since I bought that motor from you..... I might stick it in the raptor ...or I might just put it in a kiddies trike one of those plastic things. http://smythstoys.static.s3-website-eu-west-1.amazonaws.com/product_image...
by Spacey
Feb 26 2014 5:23am
Forum: E-Bike General Discussion
Topic: Tc80 burnt...
Replies: 28
Views: 2133

Re: Tc80 burnt...

Hey Sacko, still haven't hooked up your TC65 yet to anything lol....should have got a Cromotor :lol:
by Spacey
Feb 18 2014 6:05am
Forum: E-Bike General Discussion
Topic: Tc80 burnt...
Replies: 28
Views: 2133

Re: Tc80 burnt...

I have the lower speed TC65 Crown motor, still have not found time to test it out yet. Have the 72v 50A Crystalyte controller that came with it, my first thoughts were that it was a bit low powered for this motor.

What phase amps were you putting into the motor when you ran 90A at battery?
by Spacey
Feb 12 2014 7:37am
Forum: E-Bike Technical
Topic: Some Cracked Metal on my E-bike!
Replies: 25
Views: 1958

Re: Some Cracked Metal on my E-bike!

What sized motor were you using and do you use regen?
by Spacey
Feb 07 2014 5:00am
Forum: Battery Technology
Topic: Why Lithium Ion Batteries Prematurely Fail
Replies: 55
Views: 7489

Re: Why Lithium Ion Batteries Prematurely Fail

Could be a lack of daily use, but they would have had at least 500 cycles on it by now. And they are kept on an almost trickle charger where the BMS is fed with just enough power to keep all the cells nicely and very gently topped up at 3.65v. I had tried timers but it just was not feasible, keeping...
by Spacey
Feb 07 2014 3:45am
Forum: Battery Technology
Topic: Why Lithium Ion Batteries Prematurely Fail
Replies: 55
Views: 7489

Re: Why Lithium Ion Batteries Prematurely Fail

I agree with all the statements above, but here is a thought...... I have a 3 year old 12S 1P 12Ah Headway pack that I built, it has been on the charger 100% for 3 years. It still gives out over 11.5Ah and is in constant use. In the winter not so much use at all but it is still left on the charger w...
by Spacey
Feb 06 2014 5:35pm
Forum: Battery Technology
Topic: Why Lithium Ion Batteries Prematurely Fail
Replies: 55
Views: 7489

Re: Why Lithium Ion Batteries Prematurely Fail

Charging at lower voltage is better for the battery for sure, but we have to make sure that the BMS can balance at that lower voltage otherwise the pack goes out of balance pretty quick.
by Spacey
Feb 06 2014 4:17pm
Forum: Battery Technology
Topic: Strange problem cell nr. 9 always low
Replies: 92
Views: 4013

Re: Strange problem cell nr. 9 always low

As I understand it (quickly reading through the new posts whilst watching something on the news), his charger was set to 55v instead of 58.4v. The BMS never had a hope in hell of balancing this pack apart from just bleeding down the high cells every it is charged....this is why chargers that just sh...
by Spacey
Feb 04 2014 6:10pm
Forum: Battery Technology
Topic: Strange problem cell nr. 9 always low
Replies: 92
Views: 4013

Re: Strange problem cell nr. 9 always low

Yep I reckon charging up the cells individually to 3.65v and then monitor the pack over the next few charges. The charger/BMS setup stops charging when your cell hits 3.9v because it is doing its job as in not letting the cell overcharge (personally I would like to see a 3.7v trigger the charger to ...