Search found 123 matches

by Melbourne
Feb 09 2014 7:22am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Geebee wrote:Most likely a dodgy meter/shunt, I think the smoke pouring out of the drive would tell you if you were pulling 50 amps :)
Also the fact that you got a similar faulty reading of the charger.
lol... thx Geebee
by Melbourne
Feb 09 2014 6:42am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

UNUSUALLY HIGH CURRENT DRAW From 36V350w (~45-55 Peak Amp ~2000w?) Last two weeks i notice my PEAK current had increased from 28Amp to 45Amp using my Sunthing lifepo 15AH...strange?.. so as a test, i connected my spare bottle battery/neo battery and got 55Amp Peak. The measurement was done on a remo...
by Melbourne
Feb 05 2014 5:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Hi, I am looking for a reputable China online shop to buy Bafang BBS02 from. I know about greenbikekit and BMS battery, are they good? Any other good ones? Greenbikekit were fine for my test unit - good communication and service despite the small problems I seem to be encountering with 'drag'. Howe...
by Melbourne
Jan 29 2014 7:04pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

mushymellon wrote:What top speed can I expect with a 44 to 11 with a 750w at 50v cell man batt? What are the lvc issues for the controller based on the 14s cellman battery? :?: I don't follow sorry. I was asking how fast my bike would go if i bought a bafang 750w and ran through a 44t chainring to ...
by Melbourne
Jan 28 2014 9:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: Crankdrive Summary?
Replies: 22
Views: 2016

Re: Crankdrive Summary?

Thanks for the replies. Nor do I want something that's a hobby in itself to keep it running. I want to be able to just take it out and ride it :) For comparison, my hubmotor bike is running a little over 3Kw peak, but it weighs 30kg (~70lb) and is unsuited to slow & steep riding. Then Bafang BBS02 ...
by Melbourne
Jan 26 2014 4:18am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Gave the new bike a good shakedown at one of our local single track locations. Bike felt great and performed for the most part very well. however, on really rough terrain i did have some problems with the chain bouncing of the chain ring and falling inwards. This would mainly happen on rough descen...
by Melbourne
Jan 23 2014 5:24am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Was feeling a bit lazy today and comuted with the bike at 35kph to 40kph using the throttle button on level 5 to 7 out of nine. The day was warm at around 30 degC and the trip a leisurely 15km Got home and checked the motor temp. Motor was hot to the touch to a point you wanted to take your hand of...
by Melbourne
Jan 16 2014 5:18pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Hi Sam. I think the BBS02 will be faster than the BBS01 by 5 to 10kph. Melbourne and I travel the same route to the city when riding to work. I will shoot him a PM next week and see if we can meet up for back comparative testing. Oopss Kepler is CORRECT.. my speedo is off by ~5kph...i have compared...
by Melbourne
Jan 14 2014 10:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

22 miles today (work commute, plus a side trip). At 15 miles, I still had 4 bars, which was making me think that either the readout was malfunctioning, or there was a small nuclear reactor hidden inside. But shortly thereafter, it dropped to 3 bars when climbing hills. By the time I got home, it wa...
by Melbourne
Jan 12 2014 6:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Isn't it possible to harden the 11 tooth cog? I stuff my 11cog after a 1000km... 11cog started skipping/jump on heavy load. So I usually run on 14cog with higher cadence (~100rpm)... and getting efficiency = 6.16 Wh/Km(no throttle/high rpm at 35-40kph) Done ~2500 kms so far...on new chains and cogs
by Melbourne
Jan 10 2014 11:12pm
Forum: Battery Technology
Topic: Welding machine for Lipo Cells
Replies: 67
Views: 12190

Re: Welding machine for Lipo Cells

Just bought some 5F Super caps and all the other kit to build one.:D Any chance of a "shopping list" ..?? ..and specifically a cheap source of the 1F power caps that seem to be all up near $100 ! :shock: Currentlt at AU $89.00 pickup Adelaide, South Australia, Australia http://cgi.ebay.com.au/ws/eB...
by Melbourne
Jan 06 2014 3:58am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Just did a quick check over my BBS02 install after 60km and found the BB lock rings had worked quite loose (finger tight) :shock: Might be that I didn't quite torque them up tight enough in the first place but thought I'd put out a warning to check them. I'm really appreciating the help on hills. I...
by Melbourne
Jan 05 2014 7:39pm
Forum: Battery Technology
Topic: PLEASE help me pick from these 3 lifepo4 choices
Replies: 49
Views: 3595

Re: PLEASE help me pick from these 3 lifepo4 choices

Ok, you could get me to go with V power, if you gave it to me free. A123 cells? Are you serious? Prove it V power. If they are A123's why the low max discharge rate on the pack? 9 high power cells is pretty attractive. One for a spare if you need it. Then put a ping bms on it. Sunthing fine, if you...
by Melbourne
Dec 24 2013 2:20am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

All done. Had to borrow a C-wrench / hook wrench from my LBS to cinch up the BB lock rings. Can you spot the problem? http://i.imgur.com/hpv63Jw.jpg Unfortunately I had to use the lowest gear to get up my drive and the derailur stuck there because the chain is too short. So I just went for a quick ...
by Melbourne
Dec 17 2013 5:27pm
Forum: Battery Technology
Topic: which LiFePo4 pack?
Replies: 7
Views: 907

Re: which LiFePo4 pack?

Hi, ping $506.00 (air ship) bmsbattery $369.02 (air ship) ebay vpower $251 (no air ship) hobby king ($280 batteries only) need to add charger/shipping http://www.buya123batteries.com ($585 for batteries alone) need to add charger/shipping The 3.3V, 2.5aH cells (need 60 of these batteries for 48V/10...
by Melbourne
Dec 17 2013 2:12am
Forum: Battery Technology
Topic: Sony Konion V3
Replies: 10
Views: 1449

Re: Sony Konion V3

E-Fuel wrote:Hi Guys,

Do we have to balance the cells of KONION V3 ?
What is the maximum cell we should use to form a pack?
we should do in small packs for better results / durability of batteries?

Thanks in advance
Where are you guys getting Sony Konin v3 from... link me plss
by Melbourne
Dec 16 2013 7:27pm
Forum: Battery Technology
Topic: Good Batteries?
Replies: 91
Views: 7685

Re: Good Batteries?

Sorry, that is just plain wrong. At what point is the energy density or the power density of LiFePo better than that of the Sony cells? Longevity of LiFePo does not matter. Even after 500 full (!) cycles at maximum charge and discharge rate (multiple times higher than possible with LiFePo), which w...
by Melbourne
Dec 16 2013 6:44pm
Forum: Battery Technology
Topic: Good Batteries?
Replies: 91
Views: 7685

Re: Good Batteries?

Hi, I'm wondering what the latest reliable 48v battery might be. Longevity ? I searched but I didn't find a thread on this most important subject--any clues? Thanks, A What the TS is looking for is obviously a reliable, high quality pack. Here are my thoughts: LiFePO4: -Outdated technology -They dr...
by Melbourne
Dec 13 2013 4:17am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

The motor did not last long :x It did 91 km, started life last week. It died when I clocked speed consistently 20-35 km for a 10 km trip with small hills. I wonder if I can get the motor replaced, anyway the motor is too small for my speed requirement. Mine came with the speed limiter removed. The ...
by Melbourne
Dec 11 2013 6:25am
Forum: Battery Technology
Topic: Good Batteries?
Replies: 91
Views: 7685

Re: Good Batteries?

Or I can throw a coin and buy cheap one. http://www.ebay.com/itm/NEW-DIY-36V-15AH-LiFePO4-Batteries-5A-Charger-BMS-E-Bike-Powerful-Rechargeable-/141095186967?pt=AU_Car_Parts_Accessories&hash=item20d9edb217&vxp=mtr http://www.ebay.com/itm/36V-12AH-LiFePo4-battery-Lithium-Electric-Bicycle-Scooter-EBi...
by Melbourne
Dec 01 2013 9:24pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Cheap 36 volt, 8.8ah bottle battery. Similar to this but from Greenbikekit.com (their site is down). http://www.aliexpress.com/item/electric-bicycle-YLKL-water-bottle-tube-battery-36V8-8Ah/501371220.html lol... same as mine which gets me 20kms full charge. Its crap..loss power, voltage sag and you ...
by Melbourne
Dec 01 2013 5:18am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Cheap 36 volt, 8.8ah bottle battery. Similar to this but from Greenbikekit.com (their site is down). http://www.aliexpress.com/item/electric-bicycle-YLKL-water-bottle-tube-battery-36V8-8Ah/501371220.html lol... same as mine which gets me 20kms full charge. Its crap..loss power, voltage sag and you ...
by Melbourne
Dec 01 2013 4:35am
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

My 36 volt/18 amp/46 tooth, BBS-01 arrived from BTN (advertised as 250 watt version), and is installed. Nice unit, I suspect my battery is now the weak link in the system. Will do it's first commute on Monday. Notes. Won't work without the display connected. Max speed could be set as high as 40km/h...
by Melbourne
Nov 26 2013 6:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 710202

Re: New Bafang Crank-drives

Installed a cheap mod Watt meter on my BBS01/bottlebattery 9Ah/BH neo battery 9Ah. Just warning for you guys... my 350W36v BBS01 blow up my BMS on a BH Neo Emotion Battery (~2 weeks back)... i think its because when i use the Throttle it draws 28Amp (1000w)... not like printed on the motor of 18Amp....