Search found 246 matches

by Rube
Jun 30 2018 8:04pm
Forum: Battery Technology
Topic: Top 21700 cells: LG M50 5000mAh vs Samsung 48G 4800mAh
Replies: 8
Views: 3451

Re: Top 21700 cells: LG M50 5000mAh vs Samsung 48G 4800mAh

Thank you for sharing the test results. Logging cell temperature or even just peak temperature would be a very interesting, particularly at the higher discharge rates.
by Rube
Jun 14 2018 6:22pm
Forum: E-Bike General Discussion
Topic: High Amperage BMS Reccomendation
Replies: 12
Views: 3001

Re: High Amperage BMS Reccomendation

If you are willing to optimise the system for 16S you could use this product: https://www.energusps.com/shop/product/ ... 0a-750a-36
Discharge/Charge/Regen current 750A if used with external relays, current sensor and mounted on a heatsink.
by Rube
Jun 11 2018 3:48am
Forum: Items for Sale - Used
Topic: modified a2b (no longer for sale)
Replies: 7
Views: 1383

Re: modified A2B metro 74v 60amp crystlte Sydney aus

Interested, could you please post or pm the cell type and dimensions? Thanks
by Rube
May 29 2018 4:01am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1407
Views: 146480

Re: Nucular controller

Congratulations, must take a lot of hard work and time to configure these features. Very innovative for the hobby market. I look forward to purchase and testing.
by Rube
May 21 2018 4:59am
Forum: E-Bike Non-hub Motor Drives
Topic: Sn0wchyld's 12kw custom frame mid drive
Replies: 62
Views: 19609

Re: Sn0wchyld's 12kw custom frame mid drive

Hi, any news or are you too busy enjoying your other bikes? All the best ☺
by Rube
May 16 2018 5:10am
Forum: Motor Technology
Topic: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+
Replies: 173
Views: 34757

Re: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+

Thanks for posting the detailed images. Inspirational for an amateur like me. I hope you can successfully repair the controller. Did you choose the PTFE to reduce size or just for general durability?
by Rube
May 14 2018 5:56am
Forum: Items for Sale - New
Topic: [AUSTRALIA] Sur-Ron Light Bee / Fire Fly - Mid drive ebike
Replies: 162
Views: 31519

Re: [AUSTRALIA] Sur-Ron Light Bee / Fire Fly - Mid drive ebike

Hi Abrennan, any chance of registration compliance? If that is on your horizon send me a pm. I may be able to assist.
by Rube
May 03 2018 2:25am
Forum: Items for Sale - New
Topic: FREY eMTB with Bafang m600 is developing with your ideas!
Replies: 353
Views: 42372

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Very nice but battery in the same colour would make it look better.
by Rube
May 02 2018 7:20pm
Forum: EV Business World
Topic: Luna Cycle's "world's safest battery" lacking MSD
Replies: 33
Views: 6674

Re: Luna Cycle's "world's safest battery" lacking MSD

Sounds like a very frustrating situation. Perhaps EM3V could post you a battery, although based in China they have a very good reputation for quality, safety and innovation.
by Rube
Apr 18 2018 5:32am
Forum: Motor Technology
Topic: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+
Replies: 173
Views: 34757

Re: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+

Hi Maddin, thanks for posting, quite an inspirational build. Interesting use of adhesive. Couple of questions if you don't mind, did you include a 'fence' on only one side of the pulley to aid machining? No need for a fence on the second side? Looking at the bolt pattern on the swing arm, I'm wonder...
by Rube
Apr 17 2018 4:22am
Forum: E-Bike General Discussion
Topic: BHT Swing Arm & Power Middrive
Replies: 3
Views: 647

Re: BHT Swing Arm & Power Middrive

Alex, I share your beliefs and agree cooperation between niche builders could reduce fixed costs and offer scope for innovative ebikes, as opposed to motorcycles like the Suron. The difficulty will be to agree on design scope and functionality. I'd suggest a 0 to 3kw design (continous) and 3kw+ desi...
by Rube
Mar 31 2018 4:15am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1502
Views: 184588

Re: bluetooth BMS?

...... I understand it is bit hard sometimes to find a motor with correct speed constant, also discussing it in chinglish with average sales guy who don't understand your questions, but it is well worth it..... Also some motors can be connected from Y to ∆. I have to confess my first ebike was also...
by Rube
Mar 28 2018 3:11am
Forum: Battery Technology
Topic: Battery connector 600amp
Replies: 5
Views: 757

Re: Battery connector 600amp

While there is no substitute for dedicated high power connectors, I wonder about the effectiveness of the bolt in the terminal fixing used in welder connectors. Some of the welder connectors have a copper crush tube under the bolt; others rely on the bolt compressing against the wire strands, a crim...
by Rube
Mar 26 2018 5:23am
Forum: E-Bike Build Threads / Photos & Video
Topic: Qulbix 76R build
Replies: 28
Views: 6035

Re: Qulbix 76R build

If it was mine, I'd run with what you have, albeit with some wiring upgrades, and I'd keep an eye on the BMS temp and charging behaviour. That way you can get a feel for what you want and how hard you want to push the power train. You have a very capable battery and you can always upgrade peripheral...
by Rube
Mar 20 2018 6:56pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6036
Views: 328739

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Fall out from what ? ..a change of government ?..... The benefits of the connector scheme are obvious, .. If you want to understand the real "benefits" of RE in Australia,.......follow the money ! Hi, by fallout I'm referring to dumping a mostly privately funded install of solar plus home storage f...
by Rube
Mar 19 2018 4:36am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6036
Views: 328739

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Come on Jonescg, how can you possibly pork barrel if you implement a scheme that reduces energy costs for low income earners? Politics 101 tells us any scheme should target your voting demographic. Jokes aside, I agree the fall out will take years to measure and the benefit realisation of the connec...
by Rube
Mar 11 2018 1:21am
Forum: Stand-up E-scooters and E-skateboards
Topic: Evolve Carbon Gen 2 - need bms
Replies: 2
Views: 1337

Re: Evolve Carbon Gen 2 - need bms

Crikey, $2k and epic cluster of rework and repair. Hope you get your money back.
by Rube
Mar 09 2018 8:38pm
Forum: Battery Technology
Topic: Batteries and heat
Replies: 11
Views: 1098

Re: Batteries and heat

Perhaps some of the best examples can be seen in OEM automotive applications where the battery cooling circuits are designed to deal with high and low temperature issues. I think Tesla uses a glycol filled cooling ribbon snaking between the cells. From memory it requires safety features for isolatio...
by Rube
Mar 09 2018 5:58am
Forum: Battery Technology
Topic: Wire bonding, instead of spot-welding (like Tesla)
Replies: 18
Views: 7039

Re: Wire bonding, instead of spot-welding (like Tesla)

t Luna Cycle has announced that all their fusion batteries are being wire bonded in the USA. http://www.electricbike.com/luna-cycle-announces-wire-bonded-ebike-battery-packs/ Slowly catching up with their competition, I have a few reservations about the fusible link in a potting compound but good o...
by Rube
Mar 08 2018 6:10pm
Forum: Items for Sale - New
Topic: DIY assembly kit for 18650 without spot welding/Soldering
Replies: 505
Views: 83079

Re: DIY assembly kit for 18650 without spot welding/Soldering

Great news on the product evolution and congratulations for being a socially progressive and responsible company.

Will users need to avoid UV exposure to the new polymer caps?
by Rube
Mar 08 2018 4:09am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Kawasaki Z750 Conversion
Replies: 3
Views: 1130

Re: Kawasaki Z750 Conversion

Yes for the battery see Jonecg posts in the for sale section. To get inspiration from Sketchism's motard build you'll need to look on ES Facebook. Also have a look at the 50kw Aprillia build on the forum. The builder shares some geart images on Facebook but I forgot the group name. I think on YouTub...
by Rube
Mar 03 2018 6:20am
Forum: E-Bike Technical
Topic: Feedback on using Hirose DF62 Connectors
Replies: 9
Views: 1024

Re: Feedback on using Hirose DF62 Connectors

Also the Hirose DF62w have the same architecture with a seal to keep out water. I'm about to order a test batch so I'll keep you posted. I've had good experiences using crimpers, with multiple jaws, on many pin types. I'd be confident you can find a cheaper crimping tool although I haven't looked. I...
by Rube
Mar 02 2018 8:05am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Kawasaki Z750 Conversion
Replies: 3
Views: 1130

Re: Kawasaki Z750 Conversion

Awesome project, nothing wrong with proving concept using K.I.S.S. Firstly, you'll learn so much that any future mid drive build will be much less compromised than a all-in first attempt. Secondly you'll get it running sooner and the EV grin will motivate you through any revisions. Sketch is the per...
by Rube
Feb 27 2018 6:07am
Forum: Items for Sale - New
Topic: li-ion 18650 Adjustable size BATTERY HOLDER - Honeycomb Layout
Replies: 54
Views: 16551

Re: li-ion 18650 Adjustable size BATTERY HOLDER - Honeycomb Layout

Yeah another Australian interested in an order. Chris, let me know how many you want in case it's worth sharing an order.