I just got an old 2004/5 P3 (aluminum) and I am building it up.
I have 2 questions… hopefully you guys can help me out:
1- the cable for the front derailleur touches the bottom bracket shell.
Is that normal? or there is a special way to set up the cable guide?
2- do I have to use cable housing for the front derailleur from the hole near the BB to the fr. der.?
Please, anyone who has one of these bikes, help me out. If you have any pictures of those areas I am having problems you would like to share with me, please, e-mail me at aleozzy@yahoo.com
That’s a link to the Cervelo webstore where you can buy the cable guides you need … and you DO need them. Note that it says to order two. I presume you have two holes at the bottom of your bottom bracket shell where these would bolt in?
If I have a chance, I’ll snap a photo of mine so you can see how they look. The one on the drive side goes to the rear derailleur. It’s a good idea to put them in and keep them loose while you run the cables. This way they well adjust them selves to the angle that best suits the cable routing. Once the cables are run and adjusted, you can go back and tighten the bolts securing the guides in the right orientation.
No, you don’t use housing where the cable exits the seat tube and goes to the front derailleur.
Thanks for the response, but I have the 2 cable guides installed (the same ones sold on the cervelo webstore) and the cable touches the BB shell on the way out of the cable guide. And I can’t figure out how to connect the cable to the front derailleur…it just doesn’t make sense.
Any pics of these 2 areas would be very helpful. I can’t find anything on the web.
Thanks a lot.
If I’m picutring the right thing I have a similar situation on my bike; the cable rubs part of the frame past where the guide stops. I used a thin cable liner over the cable where it makes contact and I keep an eye on it every couple of rides to make sure it hasn’t slid and is still protecting the frame. You could even use a straw from a can of wd40 or similar. Again, hopefully I am envisioning the right situation. This is a link to the before pic of what mine looked like. http://farm1.static.flickr.com/108/315369913_7f94caef63_b.jpg
That is one of the problems…the other problem is that the cable rubs the BB shell right after the cable exits the plastic cable guide on the BB and before it exits the frame “hole” to be attached to the fr. der… I tried a bunch of ways to do it, but no luck so far. It’s driving me crazy!!
Could you use a long piece of cable liner that extends ?into? or at least right up against the hole where the cable exits? Mine isn’t a C’velo so I’m strictly speculating.
Hopefully this picture tells the story. This is an '05 or maybe '06 P3sl, but I doubt it’s any different from the way yours is set up for cable routing. Apparently my cables contact the bottom bracket shell a bit. I’ve never noticed any shifting issues at all on this bike, so it mustn’t be much of a concern.
The black one is of the type that came with the P3 aluminum bikes but the other one (with the “B”) is not. The non-cervelo one looks a little short on the front which is probably the problem.
**The black one is of the type that came with the P3 aluminum bikes but the other one (with the “B”) is not. The non-cervelo one looks a little short on the front which is probably the problem. **
I’m not having a problem at all. The pictured setup has been shifting perfectly. The OP is having some sort of problem. This bike was delivered to a triathlete in Brazil who decided it was the wrong size or something and sent it back to InsideOut Sports who then sold it to me. Maybe somewhere along the line someone changed the cable guide from what was standard. I just provided the photo in hopes of assisting the OP.
I guess that’s what I will have to do, but I believe that’s not the way it is supposed to be.
Thanks
Tonight I was building up a P3SL frame that I just picked up, had the same question, and found this thread. If you go to this photo from the Bikesport Michigan review of the P3SL, it shows the bare cable against the bottom bracket shell: http://www.bikesportmichigan.com/reviews/cervelo-p3sl/p3slbbunderside.jpg
My 2006 Dual has the same (black) cable guides. I noticed that it rubbed the BB shell on the way up to the FD when it was new, and added a little piece of heat shrink tubing to that area to keep it from cutting into the BB shell. It seemed to stay in place just fine.
I’ve since switched my cabling to Nokon and run the teflon liners the full length (including through the frame). Here’s a pic…
Last night I put on a piece of 1/16" 3M polyolefin heat shrink tubing as a sleeve. Just big enough to slip over the cable. Just small enough to fit through the hole in seattube out to the front derailleur. We’ll see how it holds up, but I like it better than the bare cable option.
