( Updated) TSDZ2 build is about to commence! Scratch The Tsdz2 I am going with a BBso2

Jimmy666

Active Member
Jimmy, maybe I'm not following your question properly, but I don't see any way of predicting chain line issues for sure prior to the actual install of the motor.
I am wondering if I can just put the Lekkie on instead of the stock chain ring with the use of spacers.
 

Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
So I could use one even without chain line issues? I would not want to order one if I can't use it lol. I got the kit from JohnnyNerdout and it will come with eighter 44 or 46t depending on inventory. I am guessing 46 or 48 for the riding I will be doing.
From what I remember the stock Bafang chain ring has about a 5mm offset towards the frame... The BlingRing has I believe a 9mm. So you should be able to know the chainline implications by mounting the bafang stock ring if the motor is fitted to the frame.
Spacers are also available to compensate the BlingRing offset... But for the reasons stated above I stayed with the stock ring as alignment was near perfect.

Read the offset info
 

Jimmy666

Active Member
Well the Bbso2, gearshift sensor and spacers arrived today. No going back now! Johnny Nerdout even threw in a headlight for free which was nice.
Program cable is on the way and now I am hunting for a good battery. I am thinking about a 48v 17ah. Still playing with the idea of an IGH since I forget to downshift when stopping.
 
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Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
I passed on the shift sensor and really haven't had any issues as I've always micro_paused pedaling before a shift. That said, many use it and seem to be happy.
When stopping and forgetting to downshift you can. . .
When off the bike, lean the rear tire off the ground with the kickstand and use walk mode to move the drive train to get back to a lower gear.
If still on the bike I drop to PAS 1 and then use a series of shift and then half rotation of the pedals... repeating until I am in the desired gear. If I need assistance from the start I use modest throttle to get rolling and then the former.

If there is any extra wear on my drivetrain, I haven't noticed it as chains seem to be lasting just as long as before adding the BBSO2B.
My settings in general are tame and I I'm doing as much work as the motor when riding. Occasionally I do get aggressive with the motor just because it's fun to feel like superman on a nice day 😉

For a battery... contact @Jenny Mao as she has a wide variety of battery options and has a good reputation here on EBR.
 
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AHicks

Well-Known Member
Region
USA
City
Snow Bird - Summer S.E. Michigan, Winter Gulf Coast North Central Fl.
I passed on the shift sensor and really haven't had any issues as I've always micro_paused pedaling before a shift. That said, many use it and seem to be happy.
When stopping and forgetting to shift you can. . .
When off the bike, lean the rear tire off the ground with the kickstand and use walk mode to move the drive train to get back to a lower gear.
If still on the bike I drop to PAS 1 and then use a series of shift and then half rotation of the pedals... repeating until I am in the desired gear. If I need assistance from the start I use modest throttle to get rolling and then the former.

If there is any extra wear on my drivetrain, I haven't noticed it as chains seem to be lasting just as long as before adding the BBSO2B.
My settings in general are tame and I I'm doing as much work as the motor when riding. Occasionally I do get aggressive with the motor just because it's fun to feel like superman on a nice day 😉

For a battery... contact @Jenny Mao as she has a wide variety of battery options and has a good reputation here on EBR.
On the bold, this is my plan as well. I believe though, the BBSHD and Ultra being the giant torque monsters they are, are more forgiving when it comes to this sort of thing. FWIW
 

Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
Jimmy, maybe I'm not following your question properly, but I don't see any way of predicting chain line issues for sure prior to the actual install of the motor.

I used this to determine chain line.

IMG_20210609_160225_950.JPG


D is Bottom Bracket option of your motor (68mm is typical)
F is chain line from center of Bottom Bracket
 

tomjasz

Well-Known Member
No need to worry. I beat the crap out of mine. Used by hundreds of pedicabs. Believe me those employees are BRUTAL. Once Bafang beefed up the rotor shaft they’re really quite tough. Many are bullet proof. I road one for two years full throttle in 5th gear never using to other 6. Stop and go. Around 2600 miles. Opened greased and sold with full disclosure.
 

m@Robertson

Well-Known Member
Region
USA
On the gear sensor yea/nay... I have BBSHD'd bikes with them and without. You don't need them. I have two of them in my parts pile and have never felt the need to install them. Just not worth the effort when I have automatic learned behavior now that makes them unnecessary.

I do have one in my parts pile for the bike I am building right now. If I can plug it in without unnecessary gymnastics I will, but I won't feel bad if I can't.

I put a lot more detail here: