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What kind of bottom bracket do I have/need? [Pics included]

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What kind of bottom bracket do I have/need? [Pics included]

Old 04-27-13, 08:48 PM
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What kind of bottom bracket do I have/need? [Pics included]

Hi all, new to road biking but I'm getting crankset/bb flex on my current setup. Looking to do my first drive train upgrade to Ultegra 6700 crankset and 6700 bottom bracket. I measured the bottom bracket area on the frame, it's exactly 68mm.

Here is the bottom bracket I want to buy: ebay link

1. Can I assume the 6700 BB excellent to pair up with the 6700 crankset?
2. Can I install both the crankset and BB on my Argon 18 platinum?
3. Looking at the photos of my current BB, is it just me or is the non-drive side not screwed in all the way?

Photos here:

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Old 04-27-13, 09:07 PM
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The ebay one you have linked to is the correct one for your frame.
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Old 04-27-13, 09:22 PM
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+1, since you're replacing the cranks and BB as a set, you're good to go.
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Old 04-27-13, 09:39 PM
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Originally Posted by mikehookipa
Hi all, new to road biking but I'm getting crankset/bb flex on my current setup. Looking to do my first drive train upgrade to Ultegra 6700 crankset and 6700 bottom bracket. I measured the bottom bracket area on the frame, it's exactly 68mm.

Here is the bottom bracket I want to buy: ebay link

1. Can I assume the 6700 BB excellent to pair up with the 6700 crankset?
2. Can I install both the crankset and BB on my Argon 18 platinum?
3. Looking at the photos of my current BB, is it just me or is the non-drive side not screwed in all the way?

Photos here:

It looks like you have a triple crankset. Be sure the BB comes with the proper spacers for this set up which will go on the non-drive side.
https://techdocs.shimano.com/media/te...9830671289.pdf
Cheers
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Old 04-27-13, 10:54 PM
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Originally Posted by cycledogg
It looks like you have a triple crankset. Be sure the BB comes with the proper spacers for this set up which will go on the non-drive side.
https://techdocs.shimano.com/media/te...9830671289.pdf
Cheers
Being as the OP hasn't said what crank they are getting other than a 6700, being double or triple doesn't have any bearing on the choice of correct BB at this time.

The crank in the picture is irrelevant other than for showing the BB fitting the OP currently has.
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Old 04-28-13, 07:26 AM
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Originally Posted by cycledogg
It looks like you have a triple crankset. Be sure the BB comes with the proper spacers for this set up which will go on the non-drive side.
https://techdocs.shimano.com/media/te...9830671289.pdf
Cheers
We really don't know whether the OP is getting a double (6700) or triple (6703) crank but, in either case, the spacer you refer to is included with the triple crank, not the bottom bracket.
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Old 04-28-13, 10:38 AM
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Okay thanks for the quick responses guys. I ended up buying a 6700 double 53/39T.

Btw, do I need to change my FD? I just saw a vid from Shimano talking about two different types of FDs suitable for 6700 groupset.

My current FD is already a 6700 Ultegra but it's the one for triples.

Last edited by mikehookipa; 04-28-13 at 10:43 AM.
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Old 04-28-13, 10:48 AM
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Originally Posted by mikehookipa
Okay thanks for the quick responses guys. I ended up buying a 6700 double 53/39T.

Btw, do I need to change my FD? I just saw a vid from Shimano talking about two different types of FDs suitable for 6700 groupset.

My current FD is already a 6700 Ultegra but it's the one for triples.
I'd start by just using your current front derailleur and adjusting the inner limit screw to compensate for the fact there is no granny ring. Also, be sure you set the height and alignment properly for the new big chainring if it's larger than your current one. If it works well, (and I expect it will) your good. If shifting is substandard you could always spring for a matching double front derailleur.
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