Quarq Crank Arms
09-08-10, 07:20 PM
#1
Senior Member
Thread Starter
Join Date: May 2007
Location: Westminster, CO
Posts: 373
Bikes: Giant TCR and Giant TCX
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Quarq Crank Arms
I have a buddy that wants to sell me his Quarq power meter, but it has 177.5 length crank arms, about 2.5 longer than what I currently use. Is it possible to change the crank arms on it to 175?
Thanks!
Thanks!
09-08-10, 07:25 PM
#2
Banned
Join Date: Sep 2005
Location: Santa Barbara, CA
Posts: 28,387
Bikes: Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
A crank is basically 3 parts, the arms, the spider, and the rings. I don't think anyone sells the arms by themselves, so you pretty much have to buy a new crank of the appropriate length and Quarq can transfer the spider (the expensive part) over.
09-08-10, 10:20 PM
#3
Senior Member
Join Date: Aug 2006
Location: Perth, W.A.
Posts: 935
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
You have to use one of the types of crank that has a removable spider (so that it can be replaced by the Quarq measuring element), so most of the more common Shimano and Campy cranks are not suitable. However if you happen to currently be riding one of the compatible types (SRAM S900 or FSA SL-K Light plus a few others) with your preferred crank length, then you could use that with the Quarq.
09-08-10, 10:22 PM
#4
Banned
Join Date: Sep 2005
Location: Santa Barbara, CA
Posts: 28,387
Bikes: Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
You have to use one of the types of crank that has a removable spider (so that it can be replaced by the Qaurq measuring element), so most of the more common Shimano and Campy cranks are not suitable. However if you are already riding one of the compatible types (SRAM S900 or FSA SL-K Light) with your preferred crank length, then you could use that with the Quarq.
09-10-10, 06:58 AM
#5
Certifiable Bike "Expert"
Join Date: May 2005
Posts: 5,647
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
09-10-10, 07:38 AM
#6
Overacting because I can
Join Date: Jan 2005
Location: The Mean Streets of Bethesda, MD
Posts: 4,552
Bikes: Merlin Agilis, Trek 1500
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Where does Quarq get the crank arms for its FSA cranks? IIRC, the normal SL-K and Team cranks don't have a separate arms from the spider, but Quarq sells its own version so it must be getting the arms somewhere (I would guess that its special order from FSA).
__________________
“Courage is going from failure to failure without losing enthusiasm." (Churchill)
"I am a courageous cyclist." (SpongeDad)
“Courage is going from failure to failure without losing enthusiasm." (Churchill)
"I am a courageous cyclist." (SpongeDad)
09-10-10, 09:58 AM
#7
Banned
Join Date: Sep 2005
Location: Santa Barbara, CA
Posts: 28,387
Bikes: Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
)Is the spindle on those FSA cranks attached to the drive arm or are they half-shafts like the Specialized/Lightning cranks? Because those are symmetric, you could theoretically build a crank from any two crankarms.
09-10-10, 11:08 AM
#8
Senior Member
Join Date: Aug 2007
Location: Spearfish, SD
Posts: 53
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Mieke Meyer
Quarq Technology
Last edited by mkbruch; 09-10-10 at 11:10 AM. Reason: Added name and company
