Off road beast bbs-01 750w :)
- Thread starter st1vo
- Start date
Nice vids!!
I suppose 15mph is enough for that... especially on the Wirral... popular with walkers and dogs!!
I'm almost back to square one!!
Deliberating between building a bike for about £750 or buying a bosch bike for double that (or even waiting till the next gen bosch bikes are available in Jan....)
Stumped!
I suppose 15mph is enough for that... especially on the Wirral... popular with walkers and dogs!!
I'm almost back to square one!!
Deliberating between building a bike for about £750 or buying a bosch bike for double that (or even waiting till the next gen bosch bikes are available in Jan....)
Stumped!
Blew it, I think you'd also taught me this trick, so thumbs up.st1vo, when you log in, put a tick in the square box to the right of your password and then hit "log in". That will stop the log-in timing out.
Remember to log out if using a shared PC.
MS.
Hi d8veh, I admire the way you look after your bikes clean as a whistle.This one is pretty close to what you want. It does about 24mph. It cost about £1100 to build including the cost of the donor bike. The one behind cost about £700 including the donor. It has the same performance, but isn't so suited to off-road. If you can't DIY, have a look at Frank's Xipi stuff.
MS.
The overall spec is very good indeed for the price (albeit it just looks like any other plain old hybrid bike to me ... and is on a par with the Impulse "fun"-wise !).View attachment 7259[/I]
I'm very tempted by this Kettler Traveller E-Light, weighing under 20kg and for 1700euro inc shipping it looks pretty good! Could fit chunkier tyres and do the solder trick to eliminate the 25kph limit
The 'solder trick' isn't for Bosch bikes - you'd need one of the dongle solutions or similar to derestrict the speed limit but doing this won't give you any more amps or 'guts'. Power-wise, nothing you can readily do to that setup will bring it on a par with a suitable hub motor run at higher amps / voltage. Even a 5 grand 350W Bosch Haibike would be left for dust on a steep hill test.
Bosch-type 250W bikes are nice & smooth to ride, and some are relatively light, but as far as guts are concerned the few kilos less weight will never make up for the limitations of the motor and control system. If you didn't want an Impulse you most likely won't find Bosch much different .. save you may get a bit more punch out of a 350W S-Pedelec (with all that comes with that not least the cost).
Some initial onfo on the 750w unit from an Endless sphere thread Endless-sphere.com • View topic - New Bafang Crank-drives
Well I've done it, taken my first successful (moderately) ride on my 2012.5 Downtube Nova using the new Bafang 750w 48v Bottom Bracket drive.
For those of you who are impatient and want something interesting to look at, here are the details of my first ride (mostly, some forgetting to unpause) - the looping around at the end is me waiting for the police to come and wake a guy sleeping in our unsecure parking lot far from other cars but right next to my 2012 ALiner Classic camper (for sale in MINT condition if anyone is interested).
[Bike Setup]
2012.5 Downtube Nova 20" Folding Bike
750w BB Bafang BBS-02
48v 13AH 25A continuous rated Lithium Ion Pack
48t Chainring -> 13t Rear for 3.692307 : 1 increase in crank RPM
At nominal voltage I was able to sustain 25.7 mph hot off the pack I was able to hit 29 mph.
[Ride Power Specifications]
26.38 Amps Peak
45.59 Volts Lowest
1264.1 Watts Peak
3.429 ah used / 1.28 mi per ah
168.4 wh used / 38.3599089 wh per mile
[GPS Specifications for the Ride]
Name: Bafang 48v 4.39 Mi, 13ah Liion 3.529 Ah, 26.38 A, 1264w
Date: Oct 29, 2013 12:14 am
Map:
(valid until Apr 26, 2014) View on Map MotionX® | MotionX-GPS Maps
Distance: 4.39 miles
Elapsed Time: 14:27.9
Avg Speed: 18.2 mph
Max Speed: 29.3 mph
Avg Pace: 3' 17" per mile
Min Altitude: 62 ft
Max Altitude: 167 ft
Start Time: 2013-10-29T04:14:42Z
Start Location:
Latitude: 39º 53' 07" N
Longitude: 75º 21' 20" W
End Location:
Latitude: 39º 53' 06" N
Longitude: 75º 21' 20" W
[My initial impressions]
After reprogramming the system to allow 41 mph while thinking its running 40 kph I raised the speed limit enough to test the wind out of the motor, this is as simple as changing the tire size in the Advanced Settings screen and also in main settings adjust it so that 40 km/h is the limit.
Let me be honest, I tried adjusting the Level Settings between 2 and 9 and although at 9 the throttle seemed to kick in faster, there is for sure a SLOW START mechanism within the controller which is currently enabled in the software. The result is a lag time between 1-4 seconds before full power comes on while going WOT in perhaps second gear which should dump full power and wheelie practically.
If that issue, the speed limiting and adjustable voltage cutout, phase and primary current levels, etc can be adjusted then this kit has huge potential.
One issue I've solved is moving the LCD screen to the battery compartment (the main compartment) - I am building a cable now to carry an brake interrupt from an inline trigger on the front brake, the power and control buttons will be bar mounted, the throttle will be bar mounted. Everything else can go in a project box within the trunk - in truth as a folder it takes up too much space, isn't needed, doesn't reflect current or AH used / Capacity so I would prefer a CA in it's place anyway.
Once the "smooth start" is figured out (and resume after throttle back to shift gears, I can pedal once to engage the derailer) then I think this will be a fantastic kit for anyone...
If someone doesn't make the software available for the onboard controller - I've already built a loom to link a lyen 6 fet mini monster to the Bafang Drive - haven't adapted yet and hopefully won't... I would much rather reprogram and perhaps beef up the caps and FETs onboard.
All that said, it was fun to ride and has great potential!
Hope this helps someone !
-Mike
Regards,
Mike
{My Rides]
2010 Dahon Jack - GNG v1 - LYEN 6FET - 20/40A - 18S2P10AH - Nom:66.6v,1332w
2004 Hard Rock Pro Disc - Recumpence ms eDrive v4 - Astro 3220 4T - 12S2P16AH - HV110 - Left Side Drive - Gearing: 38mph
Nominal Peak Power @ 60 seconds: 5328 watts - Maximum Power: 49.8v, 120A, 5872w
2010 Downtube 8FH - Stock GNG v1 Stock Controller - EB809XC - 12-16S
2012 Downtube Nova 7spd - Stock GNG v2 - 12S2P10AH - EB809 - 12S-16S - 20A/30A,Nom VCC: 44.4, 888w
User avatar
mwkeefer
10 MW
10 MW
Posts: 2406
Joined: Sun Jun 14, 2009 7:47 am
Location: Malvern, PA USA
Well I've done it, taken my first successful (moderately) ride on my 2012.5 Downtube Nova using the new Bafang 750w 48v Bottom Bracket drive.
For those of you who are impatient and want something interesting to look at, here are the details of my first ride (mostly, some forgetting to unpause) - the looping around at the end is me waiting for the police to come and wake a guy sleeping in our unsecure parking lot far from other cars but right next to my 2012 ALiner Classic camper (for sale in MINT condition if anyone is interested).
[Bike Setup]
2012.5 Downtube Nova 20" Folding Bike
750w BB Bafang BBS-02
48v 13AH 25A continuous rated Lithium Ion Pack
48t Chainring -> 13t Rear for 3.692307 : 1 increase in crank RPM
At nominal voltage I was able to sustain 25.7 mph hot off the pack I was able to hit 29 mph.
[Ride Power Specifications]
26.38 Amps Peak
45.59 Volts Lowest
1264.1 Watts Peak
3.429 ah used / 1.28 mi per ah
168.4 wh used / 38.3599089 wh per mile
[GPS Specifications for the Ride]
Name: Bafang 48v 4.39 Mi, 13ah Liion 3.529 Ah, 26.38 A, 1264w
Date: Oct 29, 2013 12:14 am
Map:
(valid until Apr 26, 2014) View on Map MotionX® | MotionX-GPS Maps
Distance: 4.39 miles
Elapsed Time: 14:27.9
Avg Speed: 18.2 mph
Max Speed: 29.3 mph
Avg Pace: 3' 17" per mile
Min Altitude: 62 ft
Max Altitude: 167 ft
Start Time: 2013-10-29T04:14:42Z
Start Location:
Latitude: 39º 53' 07" N
Longitude: 75º 21' 20" W
End Location:
Latitude: 39º 53' 06" N
Longitude: 75º 21' 20" W
[My initial impressions]
After reprogramming the system to allow 41 mph while thinking its running 40 kph I raised the speed limit enough to test the wind out of the motor, this is as simple as changing the tire size in the Advanced Settings screen and also in main settings adjust it so that 40 km/h is the limit.
Let me be honest, I tried adjusting the Level Settings between 2 and 9 and although at 9 the throttle seemed to kick in faster, there is for sure a SLOW START mechanism within the controller which is currently enabled in the software. The result is a lag time between 1-4 seconds before full power comes on while going WOT in perhaps second gear which should dump full power and wheelie practically.
If that issue, the speed limiting and adjustable voltage cutout, phase and primary current levels, etc can be adjusted then this kit has huge potential.
One issue I've solved is moving the LCD screen to the battery compartment (the main compartment) - I am building a cable now to carry an brake interrupt from an inline trigger on the front brake, the power and control buttons will be bar mounted, the throttle will be bar mounted. Everything else can go in a project box within the trunk - in truth as a folder it takes up too much space, isn't needed, doesn't reflect current or AH used / Capacity so I would prefer a CA in it's place anyway.
Once the "smooth start" is figured out (and resume after throttle back to shift gears, I can pedal once to engage the derailer) then I think this will be a fantastic kit for anyone...
If someone doesn't make the software available for the onboard controller - I've already built a loom to link a lyen 6 fet mini monster to the Bafang Drive - haven't adapted yet and hopefully won't... I would much rather reprogram and perhaps beef up the caps and FETs onboard.
All that said, it was fun to ride and has great potential!
Hope this helps someone !
-Mike
Regards,
Mike
{My Rides]
2010 Dahon Jack - GNG v1 - LYEN 6FET - 20/40A - 18S2P10AH - Nom:66.6v,1332w
2004 Hard Rock Pro Disc - Recumpence ms eDrive v4 - Astro 3220 4T - 12S2P16AH - HV110 - Left Side Drive - Gearing: 38mph
Nominal Peak Power @ 60 seconds: 5328 watts - Maximum Power: 49.8v, 120A, 5872w
2010 Downtube 8FH - Stock GNG v1 Stock Controller - EB809XC - 12-16S
2012 Downtube Nova 7spd - Stock GNG v2 - 12S2P10AH - EB809 - 12S-16S - 20A/30A,Nom VCC: 44.4, 888w
User avatar
mwkeefer
10 MW
10 MW
Posts: 2406
Joined: Sun Jun 14, 2009 7:47 am
Location: Malvern, PA USA
Last edited:
Hell's Bells - That's certainly got some oomph!
But...
1.28 miles per ah - That's about 15 miles range on the 13ah battery - And only 100ft. Climb.
Juicy
But...
1.28 miles per ah - That's about 15 miles range on the 13ah battery - And only 100ft. Climb.
Juicy
BBS02 750W article at electricbike.com :
Bafang BBS02 mid drive for electric bicycles | ELECTRICBIKE.COM
Bafang BBS02 mid drive for electric bicycles | ELECTRICBIKE.COM
350W version on ebay but you would have to contact the seller to see if they would ship to the UK:
Elektrofahrrad Umbausatz Bafang 8FUN BBS01 350W Mittelmotor mit LCD Display | eBay
Elektrofahrrad Umbausatz Bafang 8FUN BBS01 350W Mittelmotor mit LCD Display | eBay