Bafang BBS01/02 33mm BB locknut tools (x2!) -— format, vendor?

[chain]

What are the two (2) different tools called that operate the 33mm nuts on the Bafang 8FUN BBS01 and -02? Where can I buy them?

The inner 33mm nut has four square indents. I fastened it relatively satisfactorily with a hooked wrench which has a swiveling C-head but you can get only a shorthandled tool in there before the frame of the bike interferes, so there is no great leverage and consequently nowhere near the required 35Nm on the nut.

The outer 33mm nut has many small half circle intrusions between flats about twice as long on its outside. Is this a standard with a name, or is it something thought up by Bafang? If so, who sells the tool for it? Mine is currently finger tight because I have zero tools that will hook onto it, and the famous scredriver and hammer will just mark a very visible, nicely finished and labeled nut.

If you can't diect me to the proper tool, please tell me what you used and how.

Thanks!

Here's a photo from a French board with the inner 33mm locknut on the right at the bottom and the outer locknut on the left.

 

[trex]

for the lock rings with indents, I use a cheap lock ring tool like this one
http://www.ebay.co.uk/itm/BIKE-BOTTOM-BRACKET-LOCKRING-LOCK-RING-TOOL-15-MM-PEDAL-SPANNER-COMBO-/161076750996

for the one at the bottom left corner of the picture, I use my fingers and a piece of rag.

 

[hygroovy]

I used the lockring tool I got with a rear shock for my motorbike to do the inner one. I realise thats not a lot of help. Looks basically like this one though.

http://www.amazon.co.uk/Super-B-TB-HB50-LOCKRING-SPANNER/dp/B00NU1U7E0/ref=sr_1_5?s=sports&ie=UTF8&qid=1430218662&sr=1-5&keywords=lockring+spanner

For the outer one , i just did it up as tight as possible by hand, but I've only had the kit a week so I should probably check its still tight...

 

[trex]

there isn't a lot of stress put on those lock rings.

 

[chain]

Thank you, gentlemen. I knew you'd know!

 

[mfj197]

The inner one is done up by a standard bottom bracket hook tool. I use this one (link) which worked well. The outer lockring is tightened using another bottom bracket tool, one designed for Shimano Hollowtech II. I used one of these (link) but from another vendor. Note the strange wheely doodah on the end is for undoing the security nut on a Hollowtech II crank arm which screws into the crank itself.

Michael

 

[chain]

Thanks, Michael. I was just eyeing that Hollowtech tool at Banggood and wondering if the little wheelie is for cutting a very small diet pizza!

I have several of the hooked crescent tools, which came with various kits, and used one of those with a swivel head to fasten the inner nut. But you'd need a pretty long piece of pipe on the handle to put 30-40Nm of tightening force on it.

I looked at the official Bafang socket kit for both nuts, available from an American vendor at US$135, but by the time it is landed in Ireland, customs and VAT paid, it will be getting on for half the price of the motor kit. That just doesn't make sense unless you're a professional bike mechanic.

 

[Nealh]

My bbs has done over 900miles and the lock rings haven't loosened, I tightened mine with a rag and pliers.

 

[chain]

I had several of the hooked C rings already in various kits. For the Hollowtech workalike I bought the X-Tools Pro Shimano BB Wrench from CRC http://www.chainreactioncycles.com/ie/en/x-tools-pro-shimano-bb-wrench/rp-prod55935, simply because it was available: and recommended. Both tools worked a treat, thanks, gentlemen, though I must say I wonder how one gets a torque setting off a spanner like this.