gkamieneski

I am a little confused about the tools required for some of these new Shimano and FSA outboard cup bottom brackets. Are the external splined cups for say Shimano Hollowtech bottom brackets the same as the FSA MegaExo and newer MegaEvo bottom brackets or are they all slightly different requiring separate tools.

For my Shimano FC-R565-L 50/34 Compact crankset, it looks like I can use a Park BBT-9 tool for both the cups and the crank attachment, but this double-ended tool does not provide the means to attach a torque wrench for properly tightening the cups. Park Tool states that he BBT-9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm.

So will this tool also fit FSA MegaExo and MegaEvo cups? Also is there a separate tool that I can drive with a torque wrench that will fit all of these splined outboard cups?

bikemig 

Signing on to this thread as I finally broke down and bought a shimano crank with outboard bearings.

dr_lha

I can't speak for FSA, but for the Shimano bottom brackets, they come with a plastic tool that actually fits in the BBT-9 and effectively reduces the size of the tool. I must admit that when I first encountered this I was surprised, I assumed the BBT-9 would slide directly onto the BB cup, but it's too large without this plastic insert. You can see the tool in this picture:



Given that Shimano gives you this plastic tool with every bottom bracket, I suppose this gives them leeway to change the interface for future bottom brackets, while still allowing the BBT-9 and it's ilk to work. Presumably other BB manufacturers put in a similar tool if required with their BBs.

FYI they do make a tool that can attach to a torque wrench that replaces the BBT-9 though, the BBT-19. The BBT-19 apparently works with Shimano, FSA and other BBs so should be pretty universal.

https://www.amazon.com/Park-Tool-Bott.../dp/B00781WXL8

gkamieneski

Interesting. It would be helpful for Park Tool to mention that this insert is required. As for me, the Shimano FC-R565-L came with the bicycle so I was not given a tool insert. As for the tool component you cited as working with a torque wrench, I suppose that would replace the BBT-9s purpose with the exception of the other end for the crank arm. I read the description and it stated that it worked with FSA external cups. Not sure that means it can handle MegaExo as well as the newer MegaEVO?

mconlonx

I believe you'll be wanting either the BBT19.2 or BBT-69.

dr_lha

Yeah, it surprised me when I first encountered it as I said. Luckily for me, I was building a bike, and not having to remove one previously installed!

For my BB (an SM-BBR60) this is the part:

https://www.amazon.com/Shimano-TLFC25-Adapt-Install-Tool/dp/B00G9ANINQ

I'll note that for other bottom brackets, there seems to be different tools. You will need to identify which bottom bracket your bike currently has. The part number you're giving is for a crank (a "non series" one that Shimano sells to OEMs), rather than the BB one. I don't know if there's a matching BB for that, commonly bikes with this crankset have a (SM-BB4600) Tiagra bottom bracket, but it depends on your bike.

Quote:

As for the tool component you cited as working with a torque wrench, I suppose that would replace the BBT-9s purpose with the exception of the other end for the crank arm.

This is what you need for the other end of the crank arm:

https://www.amazon.com/Shimano-Hollowtech-II-crank-arm-tool-TL-FC16/dp/B000F5JOT8/ref=pd_sim_sg_1?ie=UTF8&refRID=102YSNP7MQ6Y19TPKXBP

Quote:

I read the description and it stated that it worked with FSA external cups. Not sure that means it can handle MegaExo as well as the newer MegaEVO?

Sorry, I'm just not familiar with FSA BBs other than BB30 ones.

HillRider

Shimano Hollowtech II bottom brackets (BB-5700, BB-6700, etc.), FSA, SRAM, Campy and many use Shimano's TL-FC32, Park's BBT-9 or BBT-19.2. or BBT-49 tools for 44 mm OD cups.

The newer Shimano BB-R60 (Ultegra 6800) has a 41 mm OD cup and uses Park's BBT-59 or the larger 44 mm tools with an adapter Shimano supplies with the bottom bracket.

The Shimano TL-FC32 and Park BBT-9 do not work with a torque wrench but the other's do.

gkamieneski

FSA's tech docs show a different ID for the tool that works with MegaEXO cups as opposed to the one that works with MegaEVO cups. This all started when I was considering replacing the Shimano FC-R565-L and it's included bottom bracket with a FSA SL-K Light BB386EVO Crankset and its associated BB386 MegaEVO bottom bracket. Just trying to buy as few tools as needed if there is any overlap.[h=1][/h]

dr_lha

Ah cool, so for other Shimano BBs, the BBT-9 fits straight onto the cup then? Makes sense.

gkamieneski

The Park Tool website has proven helpful. They are stating that the BBT-9 and BBT-19 will fit Shimano Hollowtech II, FSA MegaEXO and even Campagnolo Ultra Torque, all with 44mm diameter. The BBT-9 is a dual-ended wrench with the other end for the bearing pre-load plug at the crankarm and the BBT-19.2 (current version) is for use with a ratchet or torque wrench. It would seem to me that would make this more useful.

It seems the only tool Park has for the MegaEVO is a double-ended wrench, BBT-29 so I guess they do not have one that could be used with a torque wrench. You would have to buy the FSA tool for that.

fietsbob

Ive used the 3/8" socket drive , found the installation torque spec is just off the scale of a 3/8" beam wrench ..

HillRider

That's why they sell 3/8"M to 1/2"F adapters.

Camilo

I've used the same tool for Shimano Hollowtech II, Sram and Campagnolo external threaded cups, both Italian and English threading, and the FSA cups use the same tool. There is no difference among them that affects the tool selection. All of those were purchased within the past 3-4 years, the Shimano and Campy within the past 10 months. So, unless any of these BBs have changed this year, every external cup BB that I'm familiar with will use the same tool. It looks like this:



You can't see it, but the tool can be worked with an open jaw wrench or a 3/8" socket drive (i.e. on a torque wrench).

HillRider

Shimano just changed the bearing cup diameter from 44 to 41 mm on its new BB-R60 Ultegra 6800 bottom bracket but includes an adapter with that bb to let you use the older "Universal" bearing tools like the one you have.

Camilo

Wonder what short of performance improvement that provides? I was reading that information above, but didn't really understand it for some reason, and I was confused because I bought a Shimano threaded BB last summer and it didn't come with the adapter.

Is it just Ultegra? Wonder why.

dr_lha

I don't know about performance but it makes the bearing cup almost flush with the bottom bracket shell, so looks nice*!

*On my bike at least!

HillRider

At this point, it's just the BB-R60 (considered an Ultegra level part) that's been changed. I assume the others will follow but the older BB-5700, BB-6700, etc. are still the larger diameter.

gkamieneski

Thanks Camilo. For the most part I would agree that it fits almost all external cups. Although it appears it won't fit the newer Shimano (they may provide an adapter) and it won't fit the new FSA MegaEVO because those cups are a different diameter from the MegaEXO that it will fit.

dr_lha

The current Dura-Ace level BB (BB-9000) also requires an adapter, so presumably is a smaller diameter also, but in good Shimano fashion, it's a different adapter to the BBR60. Regardless, I imagine that smaller diameter BB Cups will filter down to all Shimano levels in a number of years, assuming that can happen before BSA BBs go the way of the dodo (hopefully they won't).

HillRider

Actually I think BSA bottom brackets are having a bit of a revival. I've seen several new bike announcements saying they have English threaded bb shells and there is now a "BSA30" bottom bracket that threads into an English bb shell and allows several 30 mm spindle cranks to be fitted. There is hope.