Yet Another Cycling Forum
General Category => The Knowledge => Topic started by: ElyDave on 27 February, 2018, 01:41:45 pm
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Anyone got one I can borrow for a short while?
I'm dismantling the Giant to build the Cruzbike, and went to remove the BB this lunchtime. The last build I did used SRAM external BB, so I have that tool, but standardisation?
So, before I go out and buy one, anyone relatively local to me able and willing to lend one?
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ime - shimano ht2 (the older version), sram gxp and fsa mega exo use the same tool. there is a plastic adapter to use the usual tool on the newer ht2 bb's. just wondering which tool are you after, and can lend, but i'm not local to ely..
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Where is local to you?
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Where is local to you?
Ely, northeast cambs.
Looks like a couple of guys in the village may be able to help.
Zigzag, I installed a Sram BB in july 2016 and bought the tool then, doesn't fit the BB on this one, installed 2014-15 from memory.
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as mentioned above more recent shimano BBs use a smaller version of the spline. Initially the BBs came with a plastic adaptor so that the older version of the tool can be used to install the newer BB.
(https://static.modernbike.com/Product_Images/large_100925_20161109030103.jpg)
The shape and number of the splines is the same, but the diameter is different.
You can now buy dedicated (metal) tools that only fit the newer, smaller spline; one of these may be required to get a seized BB out of a frame.
cheers
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Beware - the adapter does not fit all the old style tools - and anyway there are now three sizes of Shimano spline !
+ The original Hollowtech II (for which I believe the tool also fits some FSA models)
+ BBR60
+ BB9000
+ FSA Mega Evo is yet another different one.
There is a company in Taiwan (Bikehand) that makes a tool for all 4 http://www.bikehand.com/en/product-461692/4-sizes-Bottom-Bracket-Wrench-YC-304BB.html
but I don't know of it being sold in UK.
Spa do a double ended one that that fits the original HTII and the BB9000 - and it does (just) take the plastic adapter pictured by Brucey (TL-FC25)
Or if you have the £, Park tools (of course) do some square taper sockets for each.
Heaven only knows if the latest SRAM ones are compatible with any of the above.
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the plastic adaptors (cost about £3) come in two flavours
TL-FC24 (39mm dia to fit SM-BB9000, BB93 etc) and
TL-FC25 (41mm dia to fit BBR60 and SM-MT800 etc)
Both adaptors fit TL-FC32, 33, 34 shimano BB tools (which are to fit 44mm diameter cups)
(http://userdisk.webry.biglobe.ne.jp/024/504/37/N000/000/004/137310783338813215100_003_20130706195032.JPG)
TL-FC25 on the left, TL-FC24 on the right.
So if in doubt, measure the OD of shimano cups and select the tool accordingly.
cheers
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Beware - the adapter does not fit all the old style tools - and anyway there are now three sizes of Shimano spline !
+ The original Hollowtech II (for which I believe the tool also fits some FSA models)
+ BBR60
+ BB9000
+ FSA Mega Evo is yet another different one.
Oh, for fuck's sake.
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.... if you're desperate then some large pump pliers with a bit of soft rag wrapped around the jaws works fine, assuming BB isn't seized into the shell.
Rob
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Beware - the adapter does not fit all the old style tools - and anyway there are now three sizes of Shimano spline !
+ The original Hollowtech II (for which I believe the tool also fits some FSA models)
+ BBR60
+ BB9000
+ FSA Mega Evo is yet another different one.
Oh, for fuck's sake.
Well put.
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Ended up buying the tool
At least I have it for next time now.
Much peevish discussion with the LBS about the variety of "standards" and their need to buy tools to use once in a blue moon
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Thread resurrection alert.
Don't buy a tool for the BBR60.... and don't buy a BBR60 bottom bracket.
The sealing is utter pants.
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Are you saying it went bad in a couple of months of spring? What do you recommend instead?
It’s strange that Shimano bottom brackets are moving to smaller bearings (and that Shimano is marketing that as a feature). Bottom bracket bearings on bicycles have arguably always been marginally sized. Making them smaller still does not have obvious appeal, at least for the customer.
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Less weight sells stuff to the stupid.
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Thread resurrection alert.
Don't buy a tool for the BBR60.... and don't buy a BBR60 bottom bracket.
The sealing is utter pants.
Any chance of a pic of your chainset axle?
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the 'full size' bearings in the larger HT-II bottom brackets each contain only 15 balls of 3.5mm dia. To put that into perspective some headset bearings are often built more strongly than that..
I have not dismantled a BB060 bearing to see how it is constructed but the balls must be smaller still, and any margin of safety in the load rating of the bearing must be very slight. Basically any small failing in the sealing or lubrication invites catastrophe in this case.
cheers