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 Post subject: FRM BB, strong enough?
PostPosted: Thu Nov 20, 2003 5:36 pm 
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Joined: Sun Nov 02, 2003 2:25 pm
Posts: 97
Location: Bavaria
I need help:

has someone experiences with the FRm Cu2 ISIS Aluminium Bottom Brackets?

Is it strong enough for my 75 kg /165 pounds?

Thank You


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 Post subject:
PostPosted: Thu Nov 20, 2003 10:18 pm 
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Joined: Fri Jun 27, 2003 8:05 pm
Posts: 2069
I have heard they are very stiff and they have replaceable bearings to.

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 Post subject: I think so...
PostPosted: Thu Nov 20, 2003 11:26 pm 
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Joined: Sun Oct 19, 2003 4:26 pm
Posts: 495
Location: Santa Monica, CA
I have two of them in different bikes. Both work very well and are more than stiff enough.

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 Post subject:
PostPosted: Mon Dec 01, 2003 10:14 pm 
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Joined: Wed Oct 22, 2003 12:34 pm
Posts: 1668
Location: New York City
They have a ti version also?


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 Post subject:
PostPosted: Wed Dec 03, 2003 7:39 am 
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Joined: Tue Oct 28, 2003 4:32 pm
Posts: 163
Location: Italia
No, They produce only the Alluminium version.


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 Post subject:
PostPosted: Wed Dec 03, 2003 2:45 pm 
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Joined: Wed Oct 22, 2003 12:34 pm
Posts: 1668
Location: New York City
Aluminium spindle, sounds scary, but you guys say its ok, so i will take your word for it.


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 Post subject:
PostPosted: Wed Dec 03, 2003 5:02 pm 
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Joined: Fri Aug 29, 2003 9:01 pm
Posts: 2477
Location: Colorado
Why does it sound scary? If it was a standard square taper it would be a bad idea, not big enought diameter and would probley snap. But wit ISIS, or Cannondales SI cranks they work great. You don't see Cipolini snaping his do you? I would take that as the ultimate sign that they work.

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 Post subject:
PostPosted: Wed Dec 03, 2003 6:47 pm 
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Joined: Tue Jun 11, 2002 2:45 pm
Posts: 891
Location: Germany
Superlite wrote:
You don't see Cipolini snaping his do you? I would take that as the ultimate sign that they work.

First of all the Hollowgram axle looks bigger (30 mm dia) to me than ISIS axles.
Then the splines are more "raw" compared to the "smaller" ISIS splines.
ImageImage
Al tends to develop hair cracks under stress. How do these Al axles react on high impact load, especially after a few years?
Aluminium ages.
Salty roads during winter weakens Al, too.
It may last a few years, but do they hold well in the long run?

Just my 0.02 Euro cent... :wink:


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 Post subject:
PostPosted: Thu Dec 04, 2003 5:45 am 
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Joined: Wed Oct 22, 2003 12:34 pm
Posts: 1668
Location: New York City
Florian wrote:
Then the splines are more "raw" compared to the "smaller" ISIS splines.

Al tends to develop hair cracks under stress. How do these Al axles react on high impact load, especially after a few years?
Aluminium ages.
Salty roads during winter weakens Al, too.
It may last a few years, but do they hold well in the long run?
Just my 0.02 Euro cent... :wink:


you do make good points, now we need someone who has had this BB for a few years - in everyday use.


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 Post subject:
PostPosted: Thu Dec 04, 2003 8:46 am 
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Joined: Wed Jul 30, 2003 11:00 am
Posts: 152
Location: Reggio Emilia, ITALY
I don't have a FRM BB, but I have a FRM mtb front hub.
I was the first to have that special hub: it has a 20mm aluminium axle, running on BB sealed bearings. In order to fit it on a standard fork it was provided with two CNC machined aluminium "cups" that reduced axle diameter fro 20mm to 9mm.
I've run it for 9 years (since 1994), and I had no problems at all.
Ok, my axle doesn't have many twisting stresses, but it has lots more impact loads than a BB...
Very strong, very stiff, very reliable.

Hope this could help you...

Bye, Benz.


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