Search found 2391 matches

by teslanv
Nov 24 2013 12:58pm
Forum: E-Bike Non-hub Motor Drives
Topic: USA Suppliers for Bafang BBS02 Mid Drive Kits
Replies: 9
Views: 7202

Re: USA Suppliers for Bafang BBS02 Mid Drive Kits

I don't know much about the Bafang display. Is the quality bad?
If I don't have a CA, and not sure I want to purchase one right now, will the Bafang LCD suffice?
by teslanv
Nov 23 2013 3:02pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

Yes, I have looked at the GNG Mid-drives. They are certainly a better price point. What I like better about the Bafang BBS02 is that the controller is built into the motor housing and all the connectors look a bit more waterproof. (Important for me here in Rainy Seattle) It just looks like a better ...
by teslanv
Nov 23 2013 12:29pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

I have to say, there are WAY too many choices when it comes to ebike kits. Current plan , (subject to change, of course): Kit: $750 Bafang 48V/750W BBS02 Mid Drive from lcrewse: http://lectriccycles.com/products/750-watt-mid-drive-conversion-kit Battery: Might have to do some testing here. Already o...
by teslanv
Nov 23 2013 11:56am
Forum: E-Bike Non-hub Motor Drives
Topic: USA Suppliers for Bafang BBS02 Mid Drive Kits
Replies: 9
Views: 7202

Re: USA Suppliers for Bafang BBS02 Mid Drive Kits

I contacted the US Vendor (on this forum as Icrewse) and got a quick response to some questions.

I am thinking I'd gladly spend the extra $200 to have a very good level of service.

Getting pretty excited now about my first ebike build.
by teslanv
Nov 23 2013 10:48am
Forum: E-Bike Non-hub Motor Drives
Topic: USA Suppliers for Bafang BBS02 Mid Drive Kits
Replies: 9
Views: 7202

Re: USA Suppliers for Bafang BBS02 Mid Drive Kits

Just found this one. About $200 more, but at least it's free shipping.

http://lectriccycles.com/products/750-w ... ersion-kit

Can anyone comment on whether the US supplier is worth the $200 premium?
by teslanv
Nov 23 2013 10:33am
Forum: E-Bike Non-hub Motor Drives
Topic: USA Suppliers for Bafang BBS02 Mid Drive Kits
Replies: 9
Views: 7202

USA Suppliers for Bafang BBS02 Mid Drive Kits

Can anyone recommend a good US supplier for the Bafang Mid Drive BBS02 48V/750W kit? I have found this one and price seems reasonable: http://www.aliexpress.com/item/48v-750w-8fun-bafang-bafun-motor-BBS-02-mid-Center-drive-position-Motor-eletric-bicycles-trike/1259610070.html Curious if there are su...
by teslanv
Nov 20 2013 9:29pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1625
Views: 193028

Re: Graphene, say goodbye to batteries

I've read lots of articles on Graphene. It sounds quite promising, so much so that I have looked at investing into graphite mines. What I wouldn't give to a be a fly on the wall in Elon Musk's office. I can only imagine the battery R&D that goes on at Tesla and with their suppliers.
by teslanv
Nov 20 2013 7:57am
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

Yes, definitely planning on using a watt meter.
I dont need to go up the hills particularly fast either. 10-12 mph would be fast enough if it is more efficient.
by teslanv
Nov 19 2013 11:34pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

I now see the light with the LiPo. I can build a 59.2V 5AH pack for about $100 with (4) of these guys: [edit: more like $130 with shipping] http://www.hobbyking.com/hobbyking/store/__15521__Turnigy_5000mAh_4S1P_14_8v_20C_hardcase_pack.html At 25 Watts/mile that get me about 11.8 miles - enough to ge...
by teslanv
Nov 19 2013 3:47pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

http://www.hobbyking.com/hobbyking/store/__21368__ZIPPY_Compact_4000mAh_10S_25C_Long_Lipo_Pack.html If I were to supplement my LiCo battery with a LiPo, would this be an appropriate battery? And if I parallel the LiCo and Lipo, then when I need the higher amperage on hills, the LiPo would primarily...
by teslanv
Nov 19 2013 12:51pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

Cells are mostly 2200mAh to 2600mAh rated Samsung, Panasonic, & Sony. Age is between 2-7 years old.

I am only using Cells which test at more than 1500mAh on a 1A load
by teslanv
Nov 19 2013 11:16am
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

So it sounds like regardless of what motor I choose the main thing it to have both enough Amps and Watts of total power. So a 1500W System might be a good fit for my needs. Like I said, I plan on pedaling with a PAS, since fitness is a key part of my plan. if I stick with the 36V system, I would nee...
by teslanv
Nov 19 2013 8:59am
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

I never thought to add a lipo to the mix. Is it really safe to mix LiCo & LiPo packs?
by teslanv
Nov 19 2013 1:38am
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

If my cells are rated at 2C I should theoretically be able to push 35A from my pack, shouldn't I? The alternative would be to increase the Voltage to a 48V system. What I don't fully understand is how much wattage I can put into a "450W" motor. Can the same motor produce more power by simply increas...
by teslanv
Nov 18 2013 10:58pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

Re: First Ebike Kit recommendations

Yes, I know about the Low C nature of the Laptop packs, but I have a source for them, so they are cheap. Partly why I am building a large pack. But again, It's is good to get feedback to know if Laptop Cells are viable. My basic understanding of Electricity tells me that 18 amps (1C) at 36V should g...
by teslanv
Nov 18 2013 10:15pm
Forum: E-Bike General Discussion
Topic: First Ebike Kit recommendations
Replies: 19
Views: 2653

First Ebike Kit recommendations

I am looking for some solid advice on my first ebike kit build. My commute varies between 9.8 miles each way and 13.5 miles each way for up to a 27 mile round-trip commute from Bellevue to Seattle, WA. There are a few key hills I must conquer each way, including a gnarly (for me) 1-mile climb on 12%...