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5 votes

Bottom bracket replacement advice needed for BBright BB386EVO

This frame either uses a BB386 Evo "standard" or a Pressfit 30 "standard". You can determine which by measuring the width of the frame at the BB shell. If 86.5mm it is BB386Evo. If 68mm it is Pressfit ...
  • 29.5k
4 votes

30mm bottom bracket and 30mm spindle axle compatibility, should it go in by force?

There is no difference in the fit expected based on road vs mountain. I thought I would be able to provide tolerance numbers from the original BB30 technical documents put out by Cannondale. They used ...
2 votes
Accepted

Can a BBright bottom bracket that now houses a 24 mm spindle be changed to 30 mm?

As you found in your research, BBRight is based off of the BB30 standard, differing only in the placement of the bearings relative to the centerline of the frame. Shimano has never really supported ...
2 votes

30mm bottom bracket and 30mm spindle axle compatibility, should it go in by force?

The fit off the axle in the bearings needs to have no play between the race and axle. The axles are designed to be tighter than a 'slip' fit, but not a full 'interference' fit. This means the axle ...
2 votes
Accepted

SRAM BB30 cranks - how to remove crankarm from spindle?

The left arm has no threads because that side is designed never to be separated from the spindle... From what I can find, that's an M18 thread, pitch unknown but probably M18x2.0mm or M18x1.5mm. ...
  • 3,866
2 votes
Accepted

Adapter for a Shimano 7000 Crankset to BB30 Pressfit

Whoever wrote their product specs was probably confused, because "BB86.5" isn't really a thing. You have an FSA 386EVO crank. All the bikes in this series seem to have come with them. You ...
2 votes

FSA crankset play

I had this, Cannondale 2019 Optimo, FSA crankset was knackered and needed replacing, the crank that was attached to the axle (?) was supposed to be one solid piece but it was coming apart. FSA cranks ...
  • 1,270
1 vote

SRAM S2200 - replacement BB30 spindle?

As of now, this issue seems practically unsolvable. My replacement spindle is a niche item that very few manufacturers produce (none in exactly matching length) and almost no bike shop stocks, at ...
  • 151
1 vote

30mm bottom bracket and 30mm spindle axle compatibility, should it go in by force?

Update: I think you all were right. I have not installed the bottom bracket yet, I want to have the rest of the parts of the bike before (I am building it); But I used a bank-screw to hold one side of ...
1 vote

Praxis Works M30 crankset to FSA BB30 fitted in a BB386EVO shell

Looking at the Praxis web site it looks like M30 is a proprietary BB and you need a specific Praxis M30 to BB386 adapter. Strange that you tried PF30 BB units in a BB386, but I think maybe the cups ...
1 vote

can bottom bracket type be determined without disassembly?

If your BB uses a threaded interface, there will be a tool interface. For Shimano Hollowtech II style cranksets, threaded BBs sit outboard of the frame with notches needed by the tool clearly visible....
  • 3,866
1 vote

BB30 to BSA frame conversion with internal cable routing?

In the first picture it looks like the holes are simply machined to decrease the weight of the adapter without compromising strength. My only concern with the frame and adapter would be tolerances ...
1 vote

Bottom bracket replacement advice needed for BBright BB386EVO

From what I can see the various "MegaExo" BB labels refer to the spindle size and crank fixing, rather than the size of the shell in your frame. There will be subtleties with frame clearance, but that'...
  • 23.1k

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