RoadBikeReview.com's Forum Archives - General
Campy record crank owner, please help.(6 posts)
|Campy record crank owner, please help.||Qubeley|
Oct 14, 2003 10:13 AM
|Could you measure the distance from the outer ring teeth, to the center of seat tube in millimeter? As in the picture below.
Thanks in advance!
|Spooky! (no answer but additional question)||Steve Young|
Oct 14, 2003 10:45 AM
|I was looking at just that picture on Sheldon's website last night trying to figure out chainline stuff.
I'm sorry that I can't answer your question but I have an additional one which I think is important. The picture is of a track/fixed chainset right ??
Anyway regardless of that - isn't bottom bracket size also important in defining chainline? Thus the question is - is there more than one bottom bracket size option for Campy record track (I think there is even if you have a Campy BB but there are also alternative BB suppliers) so please could whoever is able to supply the measurement also supply the measurements of their bottom bracket.
|Spooky! (no answer but additional question)||Qubeley|
Oct 14, 2003 11:26 AM
|OK, I think I can answer your questions.
By "BB size", do you mean spindle or threading? If it's the same model, english(68) or italian(70) won't make any difference. The number 68 or 70 is the width of BB shell, spindle is the same lenght and will not affect chainline.
Campy Record road double crank requires 102 spindle, you can use Record or Chorus BB for it.
Campy Track crank uses 111mm spindle, you can use Record track BB(expensive), or Centaur(much cheaper).
Campy road triple use 111mm asymmetric BB, not the same as the track BB. Beware.
Alternative supplier for Campy compatible stuff? Tough. Not all spuare-taper BB are the same, and it's always highly recommended that at least you use ones from the same country. For Campy, that almost means none.
Original question was asked because I am weighting the atlternatives for my next project. Meanwhile, enjoy the Pista!
|Thanks and clarification of question ...||Steve Young|
Oct 14, 2003 12:54 PM
|When I said BB size I meant spindle length.
What I should have said was...
My new fixed bike is a Fuji Track 2003 which came with a no-name crankset and bottom bracket - 103mm according to the spec sheet on the Fuji site.
I can get a second hand record track crankset fairly cheaply and (although I don't need it) I was thinking "why not?". However I would need to get an bottom bracket to go with it and was unclear to me whether the recommended 111mm Campy track triple (or Phil Wood equivalent) would give the same chainline as the set-up that came on the bike.
I'm beginning to think that it might be more hassle than it's worth and simply give up and carry on riding (I've no complaints with the bike as it is). However, I do like tinkering and the thought of switching out for a record track has some lingering appeal.
|Doesn't Fuji Track have 110mm spacing?||Qubeley|
Oct 14, 2003 1:59 PM
|I think Record pista is designed for 120mm spacing hub.
If you can get the record track at a good price though, why not give it a shot. The centaur BB is only $20.
Oct 14, 2003 12:08 PM
|The easiest way I have found to measure chainline is this:
1. Measure the diameter of the seat tube.
2. Measure the distance from the edge of the seat tube to the ring tooth.
3. (Seat Tube Diameter / 2) + Distance from #2 above.
It is almost impossible to tell where the center of the seat tube is in the picture, but by measuring it's diameter, dividing by 2 (to get the center), and adding that to the distance from the edge of the seat tube to the ring, you have your chainline.