alfantastic
10 kW
Apart from the Lekkie Bling Ring, are there any other manufacturers who make custom chain rings for the Bafang BBS02, with an improved offset for better chain line?
Bafang BBS02 chain ring with improved off-set?
- Thread starter alfantastic
- Start date
votecdesign
1 µW
- Joined
- Feb 14, 2015
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42T
http://www.alcedoitalia.it/shop/accessori-bbs/corona-42-denti-per-bafang-centrale-bbs01/
36T
http://www.alcedoitalia.it/shop/accessori-bbs/corona-36-denti-per-bafang-centrale-bbs01-e-bbs02/
http://www.alcedoitalia.it/shop/accessori-bbs/corona-42-denti-per-bafang-centrale-bbs01/
36T
http://www.alcedoitalia.it/shop/accessori-bbs/corona-36-denti-per-bafang-centrale-bbs01-e-bbs02/
alfantastic
10 kW
Thank you votecdesign.
alfantastic
10 kW
Is there anyone who owns an Alcedoitalia 42T version, that can post the actual offset please.
http://www.alcedoitalia.it/shop/accessori-bbs/corona-42-denti-per-bafang-centrale-bbs01/
http://www.alcedoitalia.it/shop/accessori-bbs/corona-42-denti-per-bafang-centrale-bbs01/
alfantastic
10 kW
dusan said:
Sweet thanks dusan
How many more mm's would you say it's further in, than the stock Bafang 48T?
mechaniker
10 mW
dusan said:
measure is better than guessing it´s approximate 4mm :lol:
And if you want two chainring for the bbs then check this out, a 42/48Chainring also from italy: http://www.edibike.it/prodotto/corona-doppia-4248-denti-per-suzhou-bafang-8-fun-centrale-bbs/
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alfantastic
10 kW
All very helpful information. Thank you everybody .
Samd
10 MW
Useful info. I make adapters also via laser, but if offset is an issue for you I might consider making deeper ones.
tahustvedt
10 kW
I believe italians are renowned for their machining skills. I think the prices for those chainwheels is fair considering the low production numbers and the material cost. I CNC mill aluminium myself.
bgt
100 W
My Italian chainring, http://www.alcedoitalia.it/shop/guarniture/corona-42-denti-per-bafang-centrale-bbs01/ chainline:https://dl.dropboxusercontent.com/u/11003205/BatavusMamboo&Chainline42T.jpg
See how it fits on the bike in my sig. I just had to cut 2mm off the Hebie Chainglider 42T.
See how it fits on the bike in my sig. I just had to cut 2mm off the Hebie Chainglider 42T.
opperpanter
100 W
Nice! Any info on chainlines?mechaniker said:
opperpanter
100 W
Anybody knows whether both have the same offset, so the 36t also 4mm more inwards compared to stock ring?votecdesign said:
alfantastic
10 kW
Drop them an e-mail. They were pretty quick to reply and had a good command of english when I asked them a question.opperpanter said:
jtrops
1 W
- Joined
- May 17, 2015
- Messages
- 61
I am probably going to be getting a BBs02 in the very near future, and this thread raises some questions for me.
First of all, when you say "improved offset," what is it about the offset you are trying to improve?
It is my understanding that the BBS02 has a chainline of 50mm's based on the tech specs in the manual. As it happens this is exactly what I need for my Nuvinci. What are people looking for: a narrower chainline like 45mm's a wider one? Or is the 50mm published spec off, and the actual chainline is wider/narrower than spec?
First of all, when you say "improved offset," what is it about the offset you are trying to improve?
It is my understanding that the BBS02 has a chainline of 50mm's based on the tech specs in the manual. As it happens this is exactly what I need for my Nuvinci. What are people looking for: a narrower chainline like 45mm's a wider one? Or is the 50mm published spec off, and the actual chainline is wider/narrower than spec?
tahustvedt
10 kW
jtrops said:
In your case the stock ring is fine as you don't have a deraillerur. The offset on mine is actually closer to 52 mm, and I have a nice and centered 68mm bottom bracket.
On a MTB the ideal chainline is 47,5 mm. On my CX the ideal chainline is 43,5.
jtrops
1 W
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- May 17, 2015
- Messages
- 61
tahustvedt said:jtrops said:
In your case the stock ring is fine as you don't have a deraillerur. The offset on mine is actually closer to 52 mm, and I have a nice and centered 68mm bottom bracket.
Thanks for replying. I'm a little concerned that the chainline is so far out of spec at 52mm. On this system since the chainwheel mounts to the reduction gear it would seem much less variable. I guess i won't know until I have it installed, but i have no room in the back to move the chainline. I usually try to get my front and rear chainline within 1mm or less. So my window would be 49-51mm.
In truth a derailleur system has a lot more latitude with chainline than a single gear system. Derailleur chains are more forgiving about off lines, and the derailleur has a guide pulley that keeps the chainline as it enters the final drive.
opperpanter
100 W
Answer is that chainline is 2mm worse/wider than stock. Which makes sense considering 36/38 can't wrap around the motor.alfantastic said:
tinasdude
100 W
They appear to be the same design. Thanks for 36T find! My fat bike needs itopperpanter said:
tinasdude
100 W
Not the same, but better than a 36 using an adapter
tinasdude
100 W
41T offset http://www.alcedoitalia.it/shop/accessori-bbs/corona-41-denti-per-bafang-centrale-bbs01-e-bbs02/
tinasdude
100 W
I wonder what the chain line would be for the 36T piggy backed on the 42T offset. Should not require an adapter. No worse than a regular 36T with an adapter?
I would need chaing ring with improved off-set and I seems that this site no longer works ? (I cannot register there) :
http://www.ebikeclub.it/shop/en/accessories/47-corona-42-denti-per-bafang-centrale-bbs01-e-bbs02.html
any other ideas where to get 42t chain ring with better offset for BBS01B ?
http://www.ebikeclub.it/shop/en/accessories/47-corona-42-denti-per-bafang-centrale-bbs01-e-bbs02.html
any other ideas where to get 42t chain ring with better offset for BBS01B ?
Recumbentrx
100 µW
- Joined
- Mar 7, 2019
- Messages
- 7
I have the Luna Cycles eclipse chainring. It has a nice offset and they also sell spacers for it so you can customize it. I switched from a standard 11-36 9 speed cassette to the nuvinci n380 and with the Luna Cycles chainring, the chain line is dead straight. I also swapped out the cassette on my trike to a rohlhoff hub and it's my reccomend action that an internally geared hub be used with a mid drive motor. It will completely eliminate any chain line and shifting issues. You will find that your e-bike rides and shifts infinitely better in every way. The only setup I have had that worked with a rear cassette is my BionX dv500 rear hub motor. Mid drives and cassette/derailure setups, in my experience, just don't play well together, especially with recumbents
