Replacement Chainring for RPM Crankset???

Hi all:

My daughter has a Fuji Absolute road bike that comes with an RPM "Power
Pro" 8-speed crankset. I need to replace the middle (42T) chainring as
it has one bent tooth. (The chainring is aluminium so I'm not ready to
try bending the bent tooth back in line.)

1) Is there any place to purchase a genuine RPM chainring?

2) Absent that, can anybody recommend a widely-available aftermarket
alternative? One possibility I've looked at is an Ultegra FC6503 42t
130mm middle ring, but I'm not sure how well this 9-speed ring will
work in this situation.

TIA.

Tom Young

TomYoung wrote:
Hi all:

My daughter has a Fuji Absolute road bike that comes with an RPM "Power
Pro" 8-speed crankset. I need to replace the middle (42T) chainring as
it has one bent tooth. (The chainring is aluminium so I'm not ready to
try bending the bent tooth back in line.)

1) Is there any place to purchase a genuine RPM chainring?

2) Absent that, can anybody recommend a widely-available aftermarket
alternative? One possibility I've looked at is an Ultegra FC6503 42t
130mm middle ring, but I'm not sure how well this 9-speed ring will
work in this situation.

If it's really just one tooth on a 42T ring, I would suggest tearing it
off completely - I suspect it won't be missed. Even better, try bending
it back and riding a bit - if it fails, you're not out anything, since
you were planning to replace the ring anyway. Hard to imagine that
failure of the one tooth would cause an accident, or even be noticed.

mark

With all the ramps, pins, grooves, and squared off teeth in modern
chainwheels I am almost certain that this is a feature not a bug. Almost
certain. Let me try and find that manual ... How much does a tooth weigh?

Charles

Mark Janeba wrote:
TomYoung wrote:

Hi all:

My daughter has a Fuji Absolute road bike that comes with an RPM "Power
Pro" 8-speed crankset. I need to replace the middle (42T) chainring as
it has one bent tooth. (The chainring is aluminium so I'm not ready to
try bending the bent tooth back in line.)

1) Is there any place to purchase a genuine RPM chainring?

2) Absent that, can anybody recommend a widely-available aftermarket
alternative? One possibility I've looked at is an Ultegra FC6503 42t
130mm middle ring, but I'm not sure how well this 9-speed ring will
work in this situation.


If it's really just one tooth on a 42T ring, I would suggest tearing it
off completely - I suspect it won't be missed. Even better, try bending
it back and riding a bit - if it fails, you're not out anything, since
you were planning to replace the ring anyway. Hard to imagine that
failure of the one tooth would cause an accident, or even be noticed.

mark

TomYoung wrote:
Hi all:

My daughter has a Fuji Absolute road bike that comes with an RPM "Power
Pro" 8-speed crankset. I need to replace the middle (42T) chainring as
it has one bent tooth. (The chainring is aluminium so I'm not ready to
try bending the bent tooth back in line.)

Just bend it. Even if it breaks off, it will still work fine.


1) Is there any place to purchase a genuine RPM chainring?

2) Absent that, can anybody recommend a widely-available aftermarket
alternative? One possibility I've looked at is an Ultegra FC6503 42t
130mm middle ring, but I'm not sure how well this 9-speed ring will
work in this situation.


It will work fine as will a TA ring...

TIA.

Tom Young

On 29 Oct 2005 08:41:59 -0700 "TomYoung" wrote:

My daughter has a Fuji Absolute road bike that comes with an RPM "Power
Pro" 8-speed crankset. I need to replace the middle (42T) chainring as
it has one bent tooth. (The chainring is aluminium so I'm not ready to
try bending the bent tooth back in line.)

Unless it's bent WAY out of line, I'll bet that it can be just
carefully bent back with no problems.

-
-----------------------------------------------
Jim Adney
Madison, WI 53711 USA
-----------------------------------------------