201x Specialized Allez Sprint DSW and Gen2

[ichobi]

From tour magazine test it's about as aero as the first Gen aero road bike. Not bad. Certainly better than classic shaped climber bike

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[CAAD8FRED]

From tour magazine test it's about as aero as the first Gen aero road bike. Not bad. Certainly better than classic shaped climber bike

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Pardon my ignorance, what is the first gen aero road bike?

[mpulsiv]

From tour magazine test it's about as aero as the first Gen aero road bike. Not bad. Certainly better than classic shaped climber bike

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Pardon my ignorance, what is the first gen aero road bike?

Don’t worry about first generation Venge. Like I said, Allez Sprint is ~15 seconds faster in 40k next to traditional frame. That’s all you need to know

[itguy]

https://road.cc/content/tech-news/24683 ... -rim-brake

[thorerik]

I have a 2018 Black/sparkling fork 56 Sprint frameset. I was hoping on using my Ultegra 6800 crankset, but even when i have installed BB30 to 24mm reducers the spindle is still to long.
What am i missing here?

Do i have to use some kind of bb30 spacers on both NDS/DS?

Thanks in advance for helping me complete my build.

Here is a picture:

[CrankAddictsRich]

I have a 2018 Black/sparkling fork 56 Sprint frameset. I was hoping on using my Ultegra 6800 crankset, but even when i have installed BB30 to 24mm reducers the spindle is still to long.
What am i missing here?

Do i have to use some kind of bb30 spacers on both NDS/DS?

Thanks in advance for helping me complete my build.

Here is a picture:

My guess is that it has something to do with the fact that the frame is OSBB, not BB30 so the BB30 reducers you're using aren't the right right size to go from OSBB down to Shimano spec. The frame should have come packaged with some cone type spacers to reduce the pressed in bearing down for Shimano.

[Nefarious86]

The frame is bb30. They take a bare 6806 bearing into the shell.

https://www.kogel.cc/blogs/kbba/special ... -explained

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[thorerik]

So i should just get som bb30 spacers to sit between the reducer and crank arms?

[TobinHatesYou]

So i should just get som bb30 spacers to sit between the reducer and crank arms?

1) Why would you do that? Shimano spindles are 24mm in diameter.
2) You’ve probably done something completely wrong to have ~5mm of play.

[Ritsuke]

Allez is indeed BB30. So you just need the normal Shimano HT BB30 to 24mm spacers. Nothing else.

[ryanw]

I think he’s asking since there is 3-5mm of bare spindle exposed (as seen in the pic).

You need some 24mm ID spacers to sort that. Must move all over the place and will be f-ing your bearings at present.

[TobinHatesYou]

Another thing, given that the little insert between the pinch bolts on the NDS crank is sticking out, my guess is the crank isn’t fully interfaced with the spindle. He might be able to take 1mm of play out just by preloading the cranks properly.

[IrrelevantD]

As others have said, the Allez Sprint is in fact BB30. The OSBB thing is marketing from when Specialized had their priopriatary BB shell on their carbon bikes. On those, there was an aluminum insert that went in the carbon shell that made it BB30. So anything that says OSBB that has an AL insert is effectively BB30, including the Sprint, and I believe that applies to pretty much everything after 2010.

Personally, I went with a thread together outboard bearing BB. Specifically, the angular contact ones from Wheels Mfg. About 7,000mi on it so far and zero problems. Liked it so much I got one of their PF86 ones for my CX bike.

[kytyree]

I have a 2018 Black/sparkling fork 56 Sprint frameset. I was hoping on using my Ultegra 6800 crankset, but even when i have installed BB30 to 24mm reducers the spindle is still to long.
What am i missing here?

Do i have to use some kind of bb30 spacers on both NDS/DS?

Thanks in advance for helping me complete my build.

Here is a picture:

I just got done putting a 24mm shimano crank in a bb30 mtb. I ordered the kit made by Wheels Mfg, it comes with a collection of spacers to take up any slack. There is a piece for each side "the reducer" and then the collection of various spacers that are used to take up any play left. The spacers are nothing fancy, the hole in them is 24mm to match the cranks and then outer diameter matches up well with the reducers.

[Hexsense]

EDIT: As TobinHatesYou suggest, Shimano Hollow tech II cranks spindle expect 90.5mm spacing, those BB86 and etc, might have 4mm extra width in dustcap (2mm perside) or some protuding lip seal outward of the shell.

those spacers work fine, but your bearing spacing is closer than Shimano anticipated.
BSA is 68mm wide, but bearing sits outboard at 86.5mm wide.
BB86 while bearing sits inside, it is already 86.5mm wide so no more spacers.
BB386 also have bearing inside with 86.5mm wide, it is also the correct width without spacers.
PF30, BB30 have bearing sit inside on the spacing of 68mm. This is where the slack come from if the spacer don't add the width. However, spacer on the picture looks to be plenty wide. It should be able to take away the width difference.
Get spacers if needed and keep using it, but if the bearings don't last long. Next time change the BB completely to something that put bearings wider apart.