Quarq chainline problem, need help
07-21-20, 07:30 AM
#1
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Quarq chainline problem, need help
First, I have emailed Quarq in case it is an issue with the parts I have purchased and they say "hey idiot, you bought the wrong item".
I'm posting here in case it is an overall compatibility issue with my frameset.
Here is what I do have right now:
-2008 Felt DA
-FSA MegaEvo BB
-Quarq dfour meter
-meter included some 165mm alloy crank arms
Problem statement: despite the overall length of the BB and crank shaft working, the Quarq spider is soooo close that when the chainring is mounted it rubs the chainstay.
Theory: the BB width and crank arm shaft length are both too short, I need more BB width outboard of the threads to move the chainrings outboard. Meaning, likely a different threaded BB and the other Quarq carbon crankset
Buried, deep down in the bowels of the manual I found a statement "you can't use these alloy crank arms with your meter and that BB". OK. So at least I know that is wrong. Would have been nice to have that info in the listing for the product when you buy it!
So, what is correct? Buy a threaded Dub BB and the carbon Quarq crankset? I see NOTHING listed for the length of the shaft of either the alloy or carbon crankset. I need to know that so I know that it is longer than what I have now. I see nothing stating that the Dub BB bearing once threaded in is wider on the outside of the frameset, thus pushing the chainring outboard.
Anybody have some insight here? Is this a bike compatibility issue overall or just a "bought wrong Quarq parts" issue?
I'd appreciate help.
I'm posting here in case it is an overall compatibility issue with my frameset.
Here is what I do have right now:
-2008 Felt DA
-FSA MegaEvo BB
-Quarq dfour meter
-meter included some 165mm alloy crank arms
Problem statement: despite the overall length of the BB and crank shaft working, the Quarq spider is soooo close that when the chainring is mounted it rubs the chainstay.
Theory: the BB width and crank arm shaft length are both too short, I need more BB width outboard of the threads to move the chainrings outboard. Meaning, likely a different threaded BB and the other Quarq carbon crankset
Buried, deep down in the bowels of the manual I found a statement "you can't use these alloy crank arms with your meter and that BB". OK. So at least I know that is wrong. Would have been nice to have that info in the listing for the product when you buy it!
So, what is correct? Buy a threaded Dub BB and the carbon Quarq crankset? I see NOTHING listed for the length of the shaft of either the alloy or carbon crankset. I need to know that so I know that it is longer than what I have now. I see nothing stating that the Dub BB bearing once threaded in is wider on the outside of the frameset, thus pushing the chainring outboard.
Anybody have some insight here? Is this a bike compatibility issue overall or just a "bought wrong Quarq parts" issue?
I'd appreciate help.
07-21-20, 09:19 AM
#3
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Typical BF comment. Gee, thanks.
Either way, I dug and dug and dug and the included crankset spindle was too short. I found a picture where someone measured both. I couldn't measure the other product since I didn't have it and it was super hard to find a spindle length for it.
The Dub are 13mm longer. The Dub crankset being longer allows the use of the correct spacing that I need, per the instructions.
So, the included set was worthless. Now buying the correct part.
Either way, I dug and dug and dug and the included crankset spindle was too short. I found a picture where someone measured both. I couldn't measure the other product since I didn't have it and it was super hard to find a spindle length for it.
The Dub are 13mm longer. The Dub crankset being longer allows the use of the correct spacing that I need, per the instructions.
So, the included set was worthless. Now buying the correct part.
