BAFANG Crank Drive Motor...
 

I haven't seen any mention of this motor on BikeForums, but there seems to be buzz on Endless-sphere. I like the thought of a crank drive motor and the looks are better than any of the other systems I've viewed. Comes in 350w and 750w. From some folks on endless sphere that currently have hub motors....they're now converts.

Endless-sphere: http://endless-sphere.com/forums/vie...p?f=28&t=50104

I also found a US based company importing and selling them: http://lectriccycles.com/

I'm not impressed by the fat bikes he has (or the cost), but the basic unit seems inexpensive enough for me to possibly make the jump to owning a system.

Thoughts? Reivews from someone on BikeForums?

I don't have any experience with it, but this is the one I am saving up for in converting my commuter. I plan on keeping the 7-speed Tourney on the rear and completely remove the front gears, but if I have extra then I will just convert to a Nexus hub so it will be an all-season commuter.

What kit are you planning on getting? The 350w setup seems fine for urban commute and powerful enough to handle hills, the 750w setup i nice too but I don't think I could get the most of it's value due to the 32kmh speed limit e-bike regulation from where I am.

I'm thinking the 350w model. It looks plenty powerful for my needs and batteries are more suited for my budget. I would appreciate having a torque sensor and might wait to see if one comes into production before buying.

One of the members on endless sphere installed one on a classic looking Pashley bike and it looked great. He had the battery stashed under the front basket and the motor/wires were well hidden. My biggest complaint about conversion kits is that it is hard to hide the wires connecting everything. Because the BMS is housed in the motor assembly, it looks cleaner.

I am hot all over this. Ordered 750W version, arrives this Thursday. Batteries backordered till March, all from Lectric cycles, LeGrand specific. Great communication, support.
As a Frame Builder I am very cautious as to my build for this unit. But getting close, unspeneded MTB geometry/ gravel/ road ok kind of bike. More latter if desired.
Bus driver (Ted)

Definitely interested in seeing how the build turns out.

A "good" plug-and-play item, but ...
I prefer to actually build from basic components.

Actual "Crank Drive Motor ..." build for a ~$150 outlay.
Battery additional!

See - Crankin' It - Mid-Mounted Crank Drive

I used the 350W from lectriccycles to convert my 2001 Trek 7700 cross bike. I ordered the 36v 14.5AH battery. The conversion went pretty well. I tore down the Trek to pretty much bare frame with just the existing fork and rear v-brake before I started. I kept the 9 speed XT rear derailleur but removed the front derailleur entirely. I switched out the front v-brake for a disc. Had to get a new front wheel to do that.
The Trek had integrated Shimano brake/shift levers. I had to remove them because the Bafang came with its own brake levers (incorporating the motor cutoff switches), and I no longer needed a front shift anyhow. I got a SRAM 9 speed twist shift for the rear derailleur on Amazon for $20.
Installing the motor: I had to buy a few tools to remove the cranks and bottom bracket. In hindsight it would have been cheaper to take it to the local bike shop and have them do that. 15 minutes work for them would be pretty cheap. Other common tools I already had such as allen wrenches, screwdrivers, chain tool, cable cutters, etc. You will need a spanner wrench such as Parks HCW-5 lock ring spanner to fasten the motor to your frame.
The kit came with NO installation instruction other than an exploded view of the parts showing how it fit on a bike. There is a very helpful Youtube at http://www.youtube.com/watch?v=jf6BMf28ats
There is a pdf manual explaining how to use the LCD handlebar control to program the system. I finished the install on 2/13/2014. I'm in Denver and have had limited chances to ride due to weather, but have done 3 rides, 6 miles, 26 miles and 13 miles. I'm not a speed demon or a dirt bike guy. I ride for recreation and fitness. I'm 75 years old and the hills were getting steeper and longer every year. The e-bike has changed that. Two of the three rides I've done so far are rides that I hadn't done for several years. Now a piece of cake.
The LCD panel never showed any battery discharge at all - stayed on 4 bars even on the 26 mile ride. Battery full charge took about 2.5 hrs after that ride. Oh, and this motor is QUIET. The only noise I heard was normal chain and crank noise, meaning nearly silent. So far, so good.
UpRider

UpRider - you have a pic of the completed build?

i'm thinking of buying a bafang BDS02 to put on one of my pedersen bicycles which has a back pedal brake... does it work? if not... which central drive motor could handle that type of brake?

UpRider let me know if you would like to do some ebike riding in Denver. Would love to find a riding friend.

Mid drive setups usually have freewheeling cranks, meaning the chain does not move when pedaling in reverse. . so no.. your coaster brake will not work if you use the kit cranks.

There are some kits, like the stokemonkey that use regular cranks and when the motor turns, the cranks move accordingly so you have to pedal at all times when the motor is engaged, otherwise you will get bruises !

http://bikeforums.net/attachment.php...hmentid=375725I just finished converting a Spot Ajax with the Bafang 750watt BB motor and a 48v 11ah battery.

it came out fantastic. Lots of power.

the Bottom Bracket drive is superior to every hub motor out there, because it allows you to run all that power thru whatever gear set you want on the rear.
the Spot comes with an 8 speed Alfine hub... Which is okay, as long as you don't input torque lower than 2.1:1... And as long as you back off power when shifting... But I will be swapping out the Alfine for the more robust Rohloff, or a NuVinci.

even as is, tho, this motor powers up a 28% grade under throttle alone, no problem.

the Bafang is also amazingly quiet. Thus far, very impressed with its performance.

BAFANG Mid Motor Installation Video
 

actually the 48v 750w mid drive can reach the max watt in 1300W, that will be more cheap than BBSHD motor.
the low wattage mid drive motor, the TSDZ2 motor will be the best option, cheap price with high quality.

My BaFang recently arrived, I havn't had time to install it. I did open it up and added grease to the internals: white lithium to the nylon and moly grease to the secondary reduction gear. Probably this weekend I will install the motor.

Robert, unless they've improved the tolerances, be careful when cinching the side plate with allen screws. There was a gap that requires a spacer (washer) or I would have bent the plate. Also, I had to really crank down on the spanner wrench to secure the motor to tha frame. First time it loosened up.