New Bafang Crank-Drives

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
User avatar
Samd   1.21 GW

1.21 GW
Posts: 3667
Joined: Jun 28 2011 11:08pm
Location: Ballarat, AU
Contact:

Re: New Bafang Crank-drives

Post by Samd » May 08 2014 2:01am

Do you mean the plugs on the main power supply to the unit Aushiker, or the plugs on the speed sensor extension?
http://ballaratebikes.com/

ImageImageImage
"Knowledge is knowing that a tomato is a fruit. Wisdom is knowing that a 165mm rear shock can't deliver 220mm of rear swingarm travel." - Oprah Winfrey.

User avatar
Aushiker   100 W

100 W
Posts: 170
Joined: Mar 08 2014 8:47am

Re: New Bafang Crank-drives

Post by Aushiker » May 08 2014 2:10am

Samd wrote:Do you mean the plugs on the main power supply to the unit Aushiker, or the plugs on the speed sensor extension?
Main power supply ... where the battery plugs in. I have as of an hour ago the EM3EV 36V battery.

Also have a second question ... would 12G wire be okay for a power lead? WIth the motor at the front of my recumbent and the battery at the rear I need a power cable that is around 1.5 metres long.

Andrew

samsavvas   100 W

100 W
Posts: 268
Joined: Aug 25 2012 7:37pm
Location: South Australia

Re: New Bafang Crank-drives

Post by samsavvas » May 08 2014 3:57am

Aushiker wrote:
Samd wrote:Do you mean the plugs on the main power supply to the unit Aushiker, or the plugs on the speed sensor extension?
Main power supply ... where the battery plugs in. I have as of an hour ago the EM3EV 36V battery.

Also have a second question ... would 12G wire be okay for a power lead? WIth the motor at the front of my recumbent and the battery at the rear I need a power cable that is around 1.5 metres long.

Andrew
Would none of the extension/spare 'motor power' cords offered as spare parts at GBK/BMS etc do the trick? Or are their rather excessive 'freight' costs quoted for the smallest items just too difficult to countenance?

Savvas.

User avatar
beazee   10 mW

10 mW
Posts: 31
Joined: Jul 02 2012 4:09pm
Location: Waterford, Ireland

Re: New Bafang Crank-drives

Post by beazee » May 08 2014 4:22am

beazee wrote:I've a 45kg (99 lbs) cargo bike with 36V 500W 25A Bafang, powered by 14.2 Ah (2C, 500 Wh) Li-Ion bottle-mount battery pack. Usual cargo is 29kg (64 lbs) and I am a heavy build 100 kg (220 lbs). It's a coastal area I live in so I am well familiar with hills of different grades. Only ordered a Speedict meter so have no detailed data so far but I am averaging 45-50 km (~30 miles) at the traffic pace of 22-38 km/h (14-24 mph) per battery load commuting.
Few screens from Speedict after installing it yesterday evening. Usual commute although done my best to pull as much and as often as traffic conditions allowed for. PAS 5/5 but most of time WOT and spinning.
speedict.jpg
speedict.jpg (82.32 KiB) Viewed 2833 times
I reckon the voltage needs to be calibrated on the thing. The handheld meter showed me 39.6V hot (not 41.6V), so Speedict indications are 5% higher.
At such level of use the 500Wh battery pack should be enough to cover 35 km.
Larry vs. Harry Bullitt Cargo Bike, BBS-01 36V 500W, NuVinci N360, 46T-21T, 14.6 Ah Li-Ion

Chalz   1 W

1 W
Posts: 51
Joined: Dec 12 2012 7:51pm
Location: Phoenix, AZ USA

Re: New Bafang Crank-drives

Post by Chalz » May 08 2014 9:44am

Love my new Bafang ride. I got 32.5Ah on this rig.
Jamis.jpg
32.5 AH full suspension mid drive
Jamis.jpg (105.38 KiB) Viewed 2795 times

ErikDK   1 W

1 W
Posts: 50
Joined: Jun 16 2013 4:14pm

Re: New Bafang Crank-drives

Post by ErikDK » May 08 2014 1:26pm

Completely stealth

Melbourne   100 W

100 W
Posts: 123
Joined: Jan 19 2013 2:44am
Location: Melb,Aust

Re: New Bafang Crank-drives

Post by Melbourne » May 08 2014 7:14pm

ErikDK wrote:Completely stealth
lol...:)
1. BH Neo Xtrem
2. Cellbike Bafang Crank bbs01 36V350W
3. Cannondale Bad Boy bbs02 750W 48v15Ah
Melb,Aust

User avatar
Aushiker   100 W

100 W
Posts: 170
Joined: Mar 08 2014 8:47am

Re: New Bafang Crank-drives

Post by Aushiker » May 08 2014 8:37pm

samsavvas wrote:Would none of the extension/spare 'motor power' cords offered as spare parts at GBK/BMS etc do the trick? Or are their rather excessive 'freight' costs quoted for the smallest items just too difficult to countenance?
I did have a look at GreenBikeKit but could only find one cable, a nine pin cable whereas the one on my Bafang BBS01 is two pin. By the looks the one at BMSBattery is the same.

Hunting around I think I found the brand of the connector, MaiTech and I found a very similar one at http://dx.com. The difference is this the one at DX.com is a screw connection whereas the one on the Bafang BBS01 is a push together type and it comes with cable, whereas I just want the cable.

Image

I think my options are asking Paul if he can build me a cable using the Bafang style connectors or do as you suggested and change the connectors, to say XT90. Time to hone those soldering skills :)

Andrew

User avatar
Tom L   1 kW

1 kW
Posts: 361
Joined: Jan 15 2012 1:09pm
Location: Tasmania, Australia

Re: New Bafang Crank-drives

Post by Tom L » May 09 2014 6:18am

Installed my replacement controller tonight. It was very easy. There was no need to remove the motor from the bike or even remove the crank arms. Just drop the chain ring and guard down the arm on to the peddle and loosen the plastic gear cover. Then undo three bolts holding the controller case and it pops right off. Plug in a few cables and put it all back together.

It has cured my display <-> controller communication error so that's good! :D :D :D

Going to tidy up the wiring and take it for a night spin round the block.

EDIT: there was quite a bit of sand under the gear cover. Might have to clean that out regularly.

User avatar
Tom L   1 kW

1 kW
Posts: 361
Joined: Jan 15 2012 1:09pm
Location: Tasmania, Australia

Re: New Bafang Crank-drives

Post by Tom L » May 09 2014 7:13am

The power spread still isn't improved with this controller:

PAS1: 20W
PAS2: 200w
PAS3: 450W
PAS4: 520W

WOT: 800W, 18A peak.

In fact it looks to be a 500W controller :?

Not impressed.

Going to Jaycar to pick up a plug for the programming cable. If the current cant be set above 18A it's going back.

User avatar
tomjasz   10 GW

10 GW
Posts: 4110
Joined: Mar 29 2014 1:45pm
Location: Out riding, MN USA
Contact:

KHS Manhattan Smoothie "townie"

Post by tomjasz » May 09 2014 11:49am

Well, i switched gears and bought two new rides, both will be BBS01 350W bikes. The first kit came from EM3ev. But the second is coming from lectric cycles. For $100 I'll take having someone I can get a response from except on American holidays and a vendor that will actually take phone calls. Nothing bad to say about Cell_Man. If I had gone hub drive he'd have gotten another sale. But I like the BBS01 so much and Lagrand, sp?, answered my phone call within an hour or so during business hours. A huge plus. His kit is going on the same model but a larger frame size.

I really like this ride! Unfortunately my budget is blown and insufficient cash to try the 750W after buying two bikes.
Attachments
image.jpg
image.jpg (121.85 KiB) Viewed 2555 times
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

samsavvas   100 W

100 W
Posts: 268
Joined: Aug 25 2012 7:37pm
Location: South Australia

Re: New Bafang Crank-drives

Post by samsavvas » May 09 2014 6:29pm

Aushiker wrote:I did have a look at GreenBikeKit but could only find one cable, a nine pin cable whereas the one on my Bafang BBS01 is two pin. By the looks the one at BMSBattery is the same...
I think my options are asking Paul if he can build me a cable using the Bafang style connectors or do as you suggested and change the connectors, to say XT90. Time to hone those soldering skills :)Andrew

Sorry = my error. My BBS01 wiring has been so tightly integrated into my bike's rather complicated frame that I've forgotten what's what. There do seem to be more of these threaded-collar power cables around - I've been looking too as I have a similar need.

Savvas

samsavvas   100 W

100 W
Posts: 268
Joined: Aug 25 2012 7:37pm
Location: South Australia

Re: KHS Manhattan Smoothie "townie"

Post by samsavvas » May 09 2014 6:47pm

tomjasz wrote:Well, i switched gears and bought two new rides, both will be BBS01 350W bikes. The first kit came from EM3ev. But the second is coming from lectric cycles. For $100 I'll take having someone I can get a response from except on American holidays and a vendor that will actually take phone calls. Nothing bad to say about Cell_Man. If I had gone hub drive he'd have gotten another sale. But I like the BBS01 so much and Lagrand, sp?, answered my phone call within an hour or so during business hours. A huge plus. His kit is going on the same model but a larger frame size.

I really like this ride! Unfortunately my budget is blown and insufficient cash to try the 750W after buying two bikes.
I think you are likely facing a time-zone thing in communicating with EM3ev. Living in Australia I have found him very responsive and quite timely in his replies to emails. The phone thing is - for me - neither here nor there. Judging from when he responds by email, I suspect that Paul often works well into the HK night - which suits me! He's probably also working in a different business environment compared to your USA vendor (who no doubt also does an excellent job). I suspect Paul competes domestically for Bafang's attention with hundreds of other Chinese resellers. That he manages to do so effectively and then translates this into reliable supply and service to a relatively small overseas market is a credit to him. I'm sure its no small enterprise to take such a task on!

I suspect that he faces quite a different business environment from that faced by vendors in the USA, UK or Europe. Although his up-front prices for some items (not all) appear a bit higher, I value Paul's responsiveness, his ability to meet special requests and needs, the high quality of what he delivers and his obvious straight-shooting honesty and consideration (especially when it comes to shipping costs). These things are important to me.

Savvas.

User avatar
tomjasz   10 GW

10 GW
Posts: 4110
Joined: Mar 29 2014 1:45pm
Location: Out riding, MN USA
Contact:

Re: New Bafang Crank-drives

Post by tomjasz » May 09 2014 8:16pm

Me too! But I am in no way being critical of Paul. I'm thrilled that you and other regulars steered me to him. I was safe in his hands. Thank you for that. Now that I have a better understanding and have had exchanges with a statewide vendor, a 9% premium to invest in another Yank seems a no brainer. if I had followed through with a hub drive, it would have been EM3ev. I never found a USA source I was comfortable with for a hub drive system. I can see my mistake, had I made my comments without reference to a specific vendor you might have seen the logic and intent. When I purchased my first drive there was no USA stock, that I found.
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

samsavvas   100 W

100 W
Posts: 268
Joined: Aug 25 2012 7:37pm
Location: South Australia

Re: New Bafang Crank-drives

Post by samsavvas » May 09 2014 11:12pm

tomjasz wrote:Me too! But I am in no way being critical of Paul... I can see my mistake, had I made my comments without reference to a specific vendor you might have seen the logic and intent. When I purchased my first drive there was no USA stock, that I found.
It's OK - not having a go at you. No 'mistake' on your part, no criticism intended on mine and I'm sorry if my comment came across that way. Just making sure that good service experience gets positive and explicit acknowledgment - mainly because the question of 'which vendor' seems to come up often enough to warrant it! I'm sure that you'll be able to say something pretty positive about your experience with the fellow in the USA too!

In fact, I should acknowledge my generally +ve experience with GBK as well. They don't seem to go much beyond just selling stuff (no custom services, not much advisory support etc) and one gets a strong sense that language differences remain something of a barrier, but they have certainly been reliable for me and reasonably responsive, and they are a bit cheaper than em3ev. Unfortunately their shipping costs for small items seem silly. I bought a couple of DC-DC converters from Paul and they arrived via China Post for a few dollars. Similar weight items from GBK attracted a $40+ cost! This seems to be a problem with some Chinese ebike vendors - not sure why.

In fact this whole internet purchasing thing seems to have so much potential for misunderstandings and disappointments that I reckon those vendors who seem to understand the fraught dynamics and go the extra mile are worth acknowledging. Perhaps we should think of them as part of the 'ES community' (if there is such a thing) because they're actually making a +ve contribution. Which is what I reckon an on-line community is all about.

Incidentally, Paul is sending me some HWBS ('hidden wire brake sensors' for the uninitiated) because I want to install a BBS on a bike with V-brakes, retaining the current Shimano DX levers. I'm not sure if there has been a report thus far on these items so I'll post regarding the outcomes when I get them fitted.

Savvas.

gedong   1 mW

1 mW
Posts: 14
Joined: Mar 16 2014 10:51am
Location: Jakarta, Indonesia

Re: New Bafang Crank-drives

Post by gedong » May 10 2014 1:15am

i also want to know, whether BBS controller compatible with HWBS. the supplied lever tend to wobbles and the build quality seems not that good..

from what i know, the supplied brake lever ( Wuxing ) only use 2 cable, and HWS using 3 cable (they required +5V supply ). and there's also another problem about the connector, i don't think they have the same connector..

waiting for your progress sam.

User avatar
Kepler   1 GW

1 GW
Posts: 3226
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: New Bafang Crank-drives

Post by Kepler » May 10 2014 2:26am

The standard brake switch is a hall sensor (3 wire) so it sounds like they should be compatible. Just may need a connector change.
Current Rides

Lightest true ebike on the planet: ON ROAD viewtopic.php?f=6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/

User avatar
Aushiker   100 W

100 W
Posts: 170
Joined: Mar 08 2014 8:47am

Re: New Bafang Crank-drives

Post by Aushiker » May 10 2014 5:50am

gedong wrote:i also want to know, whether BBS controller compatible with HWBS. the supplied lever tend to wobbles and the build quality seems not that good..
I have one ready to be installed on my BBS01 conversion. It came from http://em3ev.com all nicely wired ready for installation.

Image

Image

Mine is being stalled with Avid BB7 disc brakes.

Andrew

Masure   100 mW

100 mW
Posts: 42
Joined: Mar 08 2012 1:11pm

Re: New Bafang Crank-drives

Post by Masure » May 10 2014 5:55am

I recently ordered parts to make a BBS based bike. I purchased avid BB7 brakes like you. I thought brake levers supplied with the BBS kit would work with BB7 brakes and cut off the motor. I am wrong ? Is it just a matter of supplied brake lever quality that makes you choose other levers ?

User avatar
teslanv   100 MW

100 MW
Posts: 2675
Joined: Nov 03 2013 8:42pm
Location: Bellevue, WA - USA
Contact:

Re: New Bafang Crank-drives

Post by teslanv » May 10 2014 7:38am

Masure wrote:I recently ordered parts to make a BBS based bike. I purchased avid BB7 brakes like you. I thought brake levers supplied with the BBS kit would work with BB7 brakes and cut off the motor. I am wrong ? Is it just a matter of supplied brake lever quality that makes you choose other levers ?
If your brakes are mechanical, the BBS kit should work.
DD Hubs, Batteries, Controllers & Custom Ebikes.
http://westcoastelectrics.com
West Coast Electric Cycles
Bellevue, WA
USA

Masure   100 mW

100 mW
Posts: 42
Joined: Mar 08 2012 1:11pm

Re: New Bafang Crank-drives

Post by Masure » May 10 2014 7:51am

They are. I was worried because Aushiker has the same brake and don't rely on stock BBS levers.

Swedebike   1 µW

1 µW
Posts: 1
Joined: May 10 2014 9:32am

Re: New Bafang Crank-drives

Post by Swedebike » May 10 2014 9:53am

I have just received a new BBS 01;

- Should the bottom bracket shaft turn as lightly as on a regular bottom bracket?

I can barely turn the shaft with my fingers, so maybe some adjustment is needed as described by Kepler at page 34.
The drive is not mounted on the bike so there is no additional preload on the thrust bearings.
Last edited by Swedebike on May 10 2014 12:56pm, edited 1 time in total.

joshseitz   100 W

100 W
Posts: 138
Joined: Jan 17 2010 2:14am
Location: Portland, Oregon

Re: New Bafang Crank-drives

Post by joshseitz » May 10 2014 12:37pm

The standard brake switch is a hall sensor (3 wire) so it sounds like they should be compatible. Just may need a connector change.
Is it possible to use the HWBS with the shifter cable for those of us with hydros? Or am I best off fitting a hall sensor to the hydraulic lever as illustrated in earlier posts? Thanks.

User avatar
tomjasz   10 GW

10 GW
Posts: 4110
Joined: Mar 29 2014 1:45pm
Location: Out riding, MN USA
Contact:

Re: New Bafang Crank-drives

Post by tomjasz » May 10 2014 1:21pm

I find the kit levers to be every bit as durable as those found on any bike in the $450-550 range. We'll see how they hold up. What are the replacement options that represent an improvement?

Thanks,

Tom
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

User avatar
Kepler   1 GW

1 GW
Posts: 3226
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: New Bafang Crank-drives

Post by Kepler » May 10 2014 7:00pm

Swedebike wrote:I have just received a new BBS 01;

- Should the bottom bracket shaft turn as lightly as on a regular bottom bracket?

I can barely turn the shaft with my fingers, so maybe some adjustment is needed as described by Kepler at page 34.
The drive is not mounted on the bike so there is no additional preload on the thrust bearings.
That is fairly normal. Wait until you have it fitted on the and you have the cranks and pedals fitted. On a new install, with the chain off, I typically see about 3 full turns backwards from a hard hand push and 1 1/2 turns forward from a hard hand push. This will loosen up further after a few rides.
Current Rides

Lightest true ebike on the planet: ON ROAD viewtopic.php?f=6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/

Post Reply