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Old 01-15-14, 03:06 PM   #1
Earl Grey
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Cranks for PF30 BB road frame

I’m trying to pick a group set to build up a road frame with a PF30 BB. Could be 105 5700, Ultegra 6700, Ultegra 6800, current Veloce or current Athena. As you can tell, it’s still early stages and I'm doing research / pricing up options.

Anyway, if I go with the cranks included in any of those groupsets, the PF30 BB seems to pose a minor problem. The following is my current understanding, and I’d really appreciate comments / corrections / pros and cons (specifically on the crank and BB issue). Are there options I’m missing? Thanks!

With the Campy Power Torque style cranks, I believe I would just need the crank and a set of these cups (described by Campy as “Pressfit BB30x46”): http://www.campagnolo.com/jsp/en/dow.../docid_336.jsp. The left-hand cup contains a bearing, the right-hand cup is really just an adapter, as the Power Torque cranks carry the right-hand bearing on the crank.

I have read some unflattering comments online about how this setup performs, specifically that the cups don't want to stay put. Although Campy has current documentation listing the item, one supplier (Tree Fort) lists the PF30 cups as “Discontinued” which is puzzling.

With Shimano cranks, I would need the crank, and either:

A regular PF30 BB, plus an adapter such as these from WheelsMfg: http://wheelsmfg.com/bb-pf30-univers...no-cranks.html
An integrated ‘Conversion BB’, such as this from Praxis: http://wheelsmfg.com/bb-pf30-univers...no-cranks.html (or, I think, this from Sugino: http://www.suginoltd.co.jp/japan/pro...RTER_japan.htm).

I know there are also PF30 cranksets, and PF30 to threaded / other adapters if I don’t want to go with a Campy or Shimano crank.

Any thoughts?

Last edited by Earl Grey; 01-15-14 at 03:35 PM. Reason: Typo
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Old 01-15-14, 03:17 PM   #2
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At our shop we've had good luck with PF30 bb's with the Wheels Mfg adapters and Shimano cranks.

On one of my own bikes I've got about 8000 miles with PF30/Wheels Mfg Adapters/6700 Ultegra cranks, and zero problems. These Wheels Mfg adapters don't get good reviews, but all I can say is that I've had good luck with them.
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Old 01-15-14, 08:57 PM   #3
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Thanks for that, good to know.

Anyone have any clues on the Campagnolo Power Torque options?

I think one further method that I didn't mention above would be to install a PF30 to English-threaded adapter (SRAM make one). This would then be compatible with a regular Shimano threaded BB or Campy's English-threaded Power Torque BB. But on the Campagnolo, not sure that there's any reason to think that method would be superior to putting the crank directly into Campy's PF30 cups (unless the SRAM adapter holds in place better than the Power Torque PF30 cups).
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Old 01-15-14, 10:25 PM   #4
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We haven't had an issue with many conversions, but PF30 bearings wear is still an issue.

The best solution so far has been this.
Rotor 4624

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Old 01-15-14, 10:28 PM   #5
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Quote:
Originally Posted by Earl Grey View Post
Thanks for that, good to know.

Anyone have any clues on the Campagnolo Power Torque options?

I think one further method that I didn't mention above would be to install a PF30 to English-threaded adapter (SRAM make one). This would then be compatible with a regular Shimano threaded BB or Campy's English-threaded Power Torque BB. But on the Campagnolo, not sure that there's any reason to think that method would be superior to putting the crank directly into Campy's PF30 cups (unless the SRAM adapter holds in place better than the Power Torque PF30 cups).
I can't say about Campy cranks in a PF30 frame, no experience there......as for adapters that convert a PF30 shell to English threaded, personally I don't like them, they seem like the ultimate kludge to me. That's just an opnion, so take it for what it's worth.

I get that pressfit bb's aren't for everyone, and personally I could live with'em or without'em, but I do think that if you have a PressFit30 frame, it makes the most sense to use the PressFit30 bearings even if you use a crankset with a 24mm spindle and adapters (shims).

I do like PF30 a lot more than BB30.....we've had no real problems with PF30 bearings (can't say the same for BB30), having sold a lot of bikes that are equipped with them.
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Old 01-15-14, 10:30 PM   #6
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^the item linus posted looks pretty good to me, too.
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Old 01-16-14, 07:51 AM   #7
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Thanks to you both, much appreciated.

That Rotor product looks cool (similar to the one Praxis make, I think - I screwed up the link above, but it's this: http://praxiscycles.com/conversion-bb/). I checked out the Rotor documentation and it gives specific instructions on which spacers to use with Hollowtech cranks etc, which is nice.
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Old 01-16-14, 09:09 AM   #8
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Gosh, I just love all of the new and improved crap!
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Old 01-16-14, 10:35 AM   #9
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Quote:
Originally Posted by Earl Grey View Post
I’m trying to pick a group set to build up a road frame with a PF30 BB.
When I looked at these (for a frame that I eventually passed on) I thought the Rotor was BB30 only, not PF30?
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Old 01-16-14, 11:18 AM   #10
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When I looked at these (for a frame that I eventually passed on) I thought the Rotor was BB30 only, not PF30?
The one linus posted is a "4624", i.e. 46mm shell w/ 24mm spindle.....46mm=inside diameter of PressFit30 bb shell. BB30= 42mm.
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Old 01-16-14, 11:32 AM   #11
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The one linus posted is a "4624", i.e. 46mm shell w/ 24mm spindle.....46mm=inside diameter of PressFit30 bb shell. BB30= 42mm.
All good then, that's why I asked. Thanks!
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Old 01-16-14, 02:01 PM   #12
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I've also been riding my PF30 frame with Dura-Ace crankset using the Wheels Mfg. (universal) adapters with zero problems. Never a creak from the crank, and I've not had to touch it since installing. Simple installation, and the reliability of Shimano's spline-pinch crankset installation. I'd take this setup over any single bolt design on the market.

-Jeremy

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Old 01-16-14, 11:18 PM   #13
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Don't take my comments the wrong way. There's many reasons why someone would buy/end up with a PF30 frame and then think the reasonable alternative would be to swap to cranks designed for different bearings, even if there are adaptors to facilitate the swap. If you already own all the parts, and need adaptors to make things work- that's one thing. If you have the frame, and no other parts...


Why anyone would outfit a PF30 BB setup (unless they already own the parts) setup with anything but the matching cranks is beyond me. PF30 offers many advantages. Adding adaptors and going the route of different cranks does nothing but add weight, more parts, and complexity. Some report problems with PF 30 bearings (and BB30). It's because they don't know how to work on 'em. Adding adaptors doesn't change this. The bearings, and frame interface is the same.

You mentioned buying a groupset? It's more economical to buy parts independently. That way there is no sacrifice.
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Old 01-17-14, 12:10 AM   #14
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Don't take my comments the wrong way. There's many reasons why someone would buy/end up with a PF30 frame and then think the reasonable alternative would be to swap to cranks designed for different bearings, even if there are adaptors to facilitate the swap. If you already own all the parts, and need adaptors to make things work- that's one thing. If you have the frame, and no other parts...


Why anyone would outfit a PF30 BB setup (unless they already own the parts) setup with anything but the matching cranks is beyond me. PF30 offers many advantages. Adding adaptors and going the route of different cranks does nothing but add weight, more parts, and complexity. Some report problems with PF 30 bearings (and BB30). It's because they don't know how to work on 'em. Adding adaptors doesn't change this. The bearings, and frame interface is the same.

You mentioned buying a groupset? It's more economical to buy parts independently. That way there is no sacrifice.
Because they like the frame...and they like Shimano? Perhaps?

-Jeremy
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Old 01-17-14, 06:09 AM   #15
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Don't take my comments the wrong way. There's many reasons why someone would buy/end up with a PF30 frame and then think the reasonable alternative would be to swap to cranks designed for different bearings, even if there are adaptors to facilitate the swap. If you already own all the parts, and need adaptors to make things work- that's one thing. If you have the frame, and no other parts...
Not taken the wrong way, I see your point. It's not to avoid a PF30 crank at all costs, just wider choice of parts. And partly, I admit, if I go with (say) an elegant polished alloy Campy groupset, I'm not a huge fan of the aesthetics of pairing that with an FSA crank.

Adapters that fit into an existing bottom bracket, or PF30->English sleeve, yes, more parts and a couple of ounces of extra weight. But some of the options - conversion bottom bracket, the recommended Campagnolo Power Torque cups, the Parlee PF30->Shimano cups, etc - do not involve any higher parts count or complexity than a PF30 bottom bracket, and weight is very comparable.
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Old 01-17-14, 06:27 AM   #16
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I believe that Campagnolo has addressed this issue with their new Over-Torque BB:
http://www.campagnolo.com/jsp/en/gro...a_catid_12.jsp
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