FRM BB, strong enough?

[Franzam]

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

[nikh]

I have heard they are very stiff and they have replaceable bearings to.

[Ye Olde Balde One]

I have two of them in different bikes. Both work very well and are more than stiff enough.

[spytech]

They have a ti version also?

[Delpi]

No, They produce only the Alluminium version.

[spytech]

Aluminium spindle, sounds scary, but you guys say its ok, so i will take your word for it.

[Superlite]

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.

[Florian]

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.

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...

[spytech]

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...

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

[benz76]

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.