New BBS02 build

R

runnermj

100 µW
Joined
Dec 20, 2015
Messages
7
Newbie here, have been comtimplating a build for a year now, help me pull the trigger. Current bike; Surly LHT, Shimano 105 10 speed cassette 11-28, ST 5703 shifters, 26 inch wheels, etc. Bike will be used for a 15 mile road commute, 4 hills, longest being 1.5 miles. I'm 160 lbs, a biker, so will be using PAS. Thinking of the BBS02 750 watt mid drive with the 52v, 13.5ah shark pack from Luna. Questions:
Will this setup just chew up the Shimano 105 cassette and chain? If so, what should I replace it with? Will a 8 or 9 speed work with the current shifter and deraileur (Ultegra RD-6700)?
Is this the right motor and battery for the job? Should I go with a smaller motor/battery?
All recomendations greatly appreciated, thanks.
 
Eric's 52V battery mates very well with the BBS02. I recommend that you use your current drivetrain, then make a decision on a replacement based on how well it wears. See my newbie comments about 20 threads below. If you're considering a BBS01 look for reviews tats and byebyepetrol, AIR, in the review section. Good luck.
 
Nix the BBS01. I have two. Love them but for extra power especially on hills stay with AT LEAST the BBS02 750W. After lot's of miles on the BBS01's and quite a few on a 750W clone, I'm all about the BBSHD. More power, more torque and some nice improvements.

PM sent.
 
Read the BBS section of the wiki before you buy anything. I have summarised most of the main threads except programming:

https://endless-sphere.com/w/index.php/EBike_Motors_Middrive

This will help you with installation, tools, general knowledge.

Questions:
Will this setup just chew up the Shimano 105 cassette and chain? If so, what should I replace it with? Will a 8 or 9 speed work with the current shifter and deraileur (Ultegra RD-6700)?

Wouldn't bother buying anything new until you've had a go with your existing set up. My Shimano 105 chains do wear pretty quick but they are also pretty cheap to replace.

Is this the right motor and battery for the job? Should I go with a smaller motor/battery?

That depends what the use is. Commuting? zipping round on the weekend? More information is required before a recommendation can be given.
 
It is my understanding that the 13.5ah Shark pack is not really suited for a BBSHD unless it is turned down below 30amps, can anyone confirm this? I have a 30a BBSHD and Luna advised me to exchange my 13.5 pack for the 11.6 for that very reason. If you stick with a 25a BBS01 you can use either pack AFAIK.
 
2old said:
Eric's 52V battery mates very well with the BBS02. I recommend that you use your current drivetrain, then make a decision on a replacement based on how well it wears. See my newbie comments about 20 threads below. If you're considering a BBS01 look for reviews tats and byebyepetrol, AIR, in the review section. Good luck.
Click to expand...
Look at the batteries listed on Lunacycle listed with each motor choice. They are compatible.
 
Interesting, although they also mention under the cell choice section that the NCR B cells will overheat and shut down if used hard while the PF cells will not. It is a moot point if the OP has decided upon a BBS02 since it will only draw 25a continuous, not enough to trigger an overtemp shutdown by the BMS of either pack. If he chooses a BBSHD he will have to decide how hard he will use his drive, in my case I ride off-road and decided to go with a cell rated for a higher rate of discharge after advice from Luna.
 
Hey everyone, thanks for your feedback. Just to clarify a few points, the commute is 15 miles each way, 4 hills involved, all road. Currently, the longest hill (1.5 miles) is done in a 39 front and 24 back, no assist. What's the best set up? Didn't consider the HD, should I?
 
If you have a 68/73 mm bottom bracket, then save some money and get a BBS02, if you have a 100mm BB or want to haul ass, get a BBSHD. Honestly, for 85% of my riding, I would be happy with a BBS02, if it was made in 100mm, but since I have a fat bike, the HD was the only choice. For commuting, the 02 is plenty, but I am sure you know about The Need For Speed.....
 
WoodlandHills said:
It is my understanding that the 13.5ah Shark pack is not really suited for a BBSHD unless it is turned down below 30amps, can anyone confirm this? I have a 30a BBSHD and Luna advised me to exchange my 13.5 pack for the 11.6 for that very reason. If you stick with a 25a BBS01 you can use either pack AFAIK.
Click to expand...
BBS01 500W is 25A. The 350W is 18A, 15A for the 250W. 18A 350W can push a loaded crank forward (Townie, Pure, Smoothie) frame at 22MPH. Some claim a few more MPH with the 25W controller, but It definitely runs hotter and I think at the upper limits of the motor. For a townie city cruiser, an honest20MPH, I think 18A is the motors sweet spot. Any off road use ought to bring the 750W into view. As would any consistent speeds over 25MPH. I don't need 750W for a grocery, bike path ride. Karl, electric fat bike,does the best job laying out what a 750 is capable of. For range and higher speeds I hope to have one bike with the BBSHD. Luna has at least 6 11.5/13.8 AH choices for the BBSHD. If you pound on that throttle and ride WOT and have the need for speed, in a frame pack, the 11.5A PF. Need more mileage, use it as a bicycle with more input, not constantly squeaking every bit of power out, NCRB. But for the best of both worlds a 26f triangle pack rated 20Ah is a winner. I like frame packs best and the minimum 15-18 miles per charge minimum works for me. Pedaling, remember, adds mileage by your labor. That can easily double mileage by a mildly athletic rider. I always use pas and even have a fair gain there.
 
runnermj said:
Hey everyone, thanks for your feedback. Just to clarify a few points, the commute is 15 miles each way, 4 hills involved, all road. Currently, the longest hill (1.5 miles) is done in a 39 front and 24 back, no assist. What's the best set up? Didn't consider the HD, should I?
Click to expand...
Have fun, avoid buyers remorse. Your car may be capable of 120mph, but you won't use the power. It sure is nice on a long lonely run of road, or a quick takeoff in traffic, to have some power. Buy a BBSHD. Several good vendors. Lowest price, do your homework and own install, buy some tools, learn here, go Lunacycles. For full service, unsure of your tools and skills, need phone calls and direct support, California eBikes.

Go with what excites you. The happiest out here did.
 
WoodlandHills said:
If you have a 68/73 mm bottom bracket, then save some money and get a BBS02, if you have a 100mm BB or want to haul ass, get a BBSHD. Honestly, for 85% of my riding, I would be happy with a BBS02, if it was made in 100mm, but since I have a fat bike, the HD was the only choice. For commuting, the 02 is plenty, but I am sure you know about The Need For Speed.....
Click to expand...
Um,100MM BBS02 are still available...
 
I thought there was quite the premium for the 100mm BBS02 conversion kits compared to the 100mm BBSHD? Doesn't it double the price of an 02? I don't consider China direct as I have been burned before......
 
I done a 750w bbs02 conversion on a mtb frame a couple of months ago, have to say it does the job a lot better than my other rear hub bike. When you mention hills definitely go for the 750 version, in fact if i was to do this again today i`d go for the HD item. Better too much than too little!
 
The only reason I went with the 750 for my folder Montague conversion instead of the HD , saving 3 lbs or so, as it was going in a small airplane, and so far I'm happy with the trade off. If anything I'm surprised by how gutty it is, which of course makes me drool over getting a HD, but I'll wait until I build a strictly ground bound bike, saving 3 pounds and the few hundred bucks less I paid works for me. So far, 100% of my riding has been on snow covered hilly gravel roads and I can only imagine it'll do even better on pavement. And yes, I've had a few spills, OK more then a few, but I am getting the hang of the thumb throttle while on ice :shock:
 
craneplaneguy said:
The only reason I went with the 750 for my folder Montague conversion instead of the HD , saving 3 lbs or so, as it was going in a small airplane, and so far I'm happy with the trade off. If anything I'm surprised by how gutty it is, which of course makes me drool over getting a HD, but I'll wait until I build a strictly ground bound bike, saving 3 pounds and the few hundred bucks less I paid works for me. So far, 100% of my riding has been on snow covered hilly gravel roads and I can only imagine it'll do even better on pavement. And yes, I've had a few spills, OK more then a few, but I am getting the hang of the thumb throttle while on ice :shock:
Click to expand...
Perfect choice given you situation. The 750 is still a great choice. But being on the bleeding edge is goo too!
 
WoodlandHills said:
I thought there was quite the premium for the 100mm BBS02 conversion kits compared to the 100mm BBSHD? Doesn't it double the price of an 02? I don't consider China direct as I have been burned before......
Click to expand...
Same price range. $795. For those who, mistakenly, think it a better motor...
 
fredfire said:
Get better tires as you will go much faster you will get more flats. http://www.schwalbetires.com/node/943
Click to expand...

Fact. Although my Kenda tires have never gotten a flat in 3000 miles of wear. The mid drives don't seem to be as hard on tires as hub drives. At least in my experience.
 
Nice BBSHD review.

https://www.electricbike.com/bafang-bbshd-1000w-mini-review/
 
Hi All, just wanted to report back. I made the leap and purchased the BBSHD (go big or go home) from Luna Cycles. After some trials and tribulations, the kit is finally installed on the bike. Shout out to the Luna Cycle team for their help! Took it for a test ride around the block last night, wow! Can't wait for a longer ride this weekend before starting to commute to work next week. Question, I bought the generic ebrake sensor from Luna and tried to wire the yellow plug from the brake handle that was provided and I think I jacked it up. Is the red light supposed to come on when it's connected to the motor? I connected it to the front brake cable and it doesn't work. I think I must have messed up the wire connections. I didn't realized that Luna sold a Bafang ebrake sensor that already has the yellow connector, I would have bought that. Is the brake cable supposed to slide through the sensor, or is the sensor supposed to move along with the cable when it moves? Not sure how this is supposed to work. Also, on my short test ride, when I stopped pedaling the motor would cut off, couldn't this be done when shifting to minimize the grinding? Do I even need the brake sensor?
Thanks for your input, and I will try and post some pics of the build later.
 
runnermj said:
Hi All, just wanted to report back. I made the leap and purchased the BBSHD (go big or go home) from Luna Cycles. After some trials and tribulations, the kit is finally installed on the bike. Shout out to the Luna Cycle team for their help! Took it for a test ride around the block last night, wow! Can't wait for a longer ride this weekend before starting to commute to work next week. Question, I bought the generic ebrake sensor from Luna and tried to wire the yellow plug from the brake handle that was provided and I think I jacked it up. Is the red light supposed to come on when it's connected to the motor? I connected it to the front brake cable and it doesn't work. I think I must have messed up the wire connections. I didn't realized that Luna sold a Bafang ebrake sensor that already has the yellow connector, I would have bought that. Is the brake cable supposed to slide through the sensor, or is the sensor supposed to move along with the cable when it moves? Not sure how this is supposed to work. Also, on my short test ride, when I stopped pedaling the motor would cut off, couldn't this be done when shifting to minimize the grinding? Do I even need the brake sensor?
Thanks for your input, and I will try and post some pics of the build later.
Click to expand...

It should light up. It installs the opposite of what I expected. This will sort it. Yes tha BFang is easier. You didn't ask. <wink>
 

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Bafang docs https://drive.google.com/file/d/0BwlG_xMyE4xFaUJFNHNpOUVyQXM/view
 
Tom,
Yes I didn't ask, but I didn't know it existed. If I'm buying the Bafang, why would I have bought the universal sensor? I figured out the problem, I was told to only use 2 wires, not the red, when I spliced to the yellow connector. You need to use all 3, cost me another $20.
 
runnermj said:
Tom,
Yes I didn't ask, but I didn't know it existed. If I'm buying the Bafang, why would I have bought the universal sensor? I figured out the problem, I was told to only use 2 wires, not the red, when I spliced to the yellow connector. You need to use all 3, cost me another $20.
Click to expand...
Again my apologies for the misunderstanding, I meant it as a simple, silly, response.

I wish there were never any surprises or $20 slaps, but nearly every build has them. One of the frustrations of adapting a kit to our bikes. My first build required buying a new bike. $250 in fixes only produced a substandard eBike. Another $500 made the build perfect. Once the kit, lights, and all the accouterments were in place it's pretty much a $2500 bike, (maybe closer to $3000 if I really bear down and remember all the little bits and problems) but it's near perfect and it's great ride. It'll have the BBSHD this weekend.

Great to here you got it done and can soon enjoy the ride rather than frustrating details.
 
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