Lionel
11-29-2004, 07:01 PM
Hi,
I am getting an 82 Record Strada crankset for a fixed gear project. I am lost in the various lenght of BB. What should I use ? It seems the the SR or NR Bottom brackets all vary slightly in lenght from 110mm to 112...
Thanks.
psycho_on_bianchi
11-30-2004, 03:55 AM
Hi,
I am getting an 82 Record Strada crankset for a fixed gear project. I am lost in the various lenght of BB. What should I use ? It seems the the SR or NR Bottom brackets all vary slightly in lenght from 110mm to 112...
Thanks.
According to Branford bike, older cranksets like the one are mentioning require a 5mm driveside offset of the bottom bracket.
My '91 Bianchi had a loose ball Pista bottom bracket. I opted for a Phil Wood Symetrical 110.5mm Campy specific model as a replacement. Phil sells with a phone call, Branford (http://wwwbranfordbike.com) sells them and drop ships them, Licktons (http://www.lickbike.com) sells them for the best price, with a phone call. The advantage of a Phil BB is the adjustability factor. If you need a little to the left adjust it that way, need it to the right, adjust it that way with the cups that allow up to 5mm of offset adjustment.
Lionel
11-30-2004, 07:05 AM
According to Branford bike, older cranksets like the one are mentioning require a 5mm driveside offset of the bottom bracket.
My '91 Bianchi had a loose ball Pista bottom bracket. I opted for a Phil Wood Symetrical 110.5mm Campy specific model as a replacement. Phil sells with a phone call, Branford (http://wwwbranfordbike.com) sells them and drop ships them, Licktons (http://www.lickbike.com) sells them for the best price, with a phone call. The advantage of a Phil BB is the adjustability factor. If you need a little to the left adjust it that way, need it to the right, adjust it that way with the cups that allow up to 5mm of offset adjustment.
Thanks for your reply. Given that I am building a fix gear and do not need the clearance for a front derailleur does that make a difference ? In other words can I use a shorter axle ?
The Phil wood sure looks great but is very expensive...
psycho_on_bianchi
12-01-2004, 03:30 AM
Thanks for your reply. Given that I am building a fix gear and do not need the clearance for a front derailleur does that make a difference ? In other words can I use a shorter axle ?
The Phil wood sure looks great but is very expensive...
My view comes from tinkering with my own bikes. I don't own a fixed gear bike. What I do have the ability to do is remove what I alreeady have, check the clearance and come to a conclusion. (I am a little loaded down with bike parts)
I am almost sure that when Branford mentions the 5mm offset, that is to accomodate double chainring cranksets from a bygone era long before 7-8-9-10 speeds were around. Thus the distance between the 2 chanrings weren't as close as they are today.
With that said, you are probably no closer to your answer. You might try the "fixed gear forum". I am sure there are some folks a little more in tune with your specific question there. Sorry I can't answer question properly.
FlatBroke
12-21-2004, 07:14 AM
I have that crankset on my old cannondale and both the small chainring and the end of the arms come very close to the chainstays, so I could not run a shorter spindle on it, but since the stays on this bike are so big, you may not have that problem. I need to pull my cranks off and check the spindle width, and get back to you...if mine is 110 then I'd say you probably want a short one for good chainline. Seems like I read somewhere that Sampson bbs are adjustable on both sides?
Number9
12-21-2004, 09:32 PM
According to Branford bike, older cranksets like the one are mentioning require a 5mm driveside offset of the bottom bracket.
My '91 Bianchi had a loose ball Pista bottom bracket. I opted for a Phil Wood Symetrical 110.5mm Campy specific model as a replacement. Phil sells with a phone call, Branford (http://wwwbranfordbike.com) sells them and drop ships them, Licktons (http://www.lickbike.com) sells them for the best price, with a phone call. The advantage of a Phil BB is the adjustability factor. If you need a little to the left adjust it that way, need it to the right, adjust it that way with the cups that allow up to 5mm of offset adjustment.
Thanks for the link to lickbike. They are enthusiasts and do not try to upsell. Me: I'd like the Phil Wood alloy lock rings. Them: No, they're more expensive and have galvonic corrosion issues in your application. Me: it's a dedicated time trial bike and I'll live with the issues - besides, Phil Wood says they're hard anodized now so the galvonic corrosion issues are moot. Them: OK, but we'd advise otherwise. Me: I'd like two of the Phil Wood pro lockring tools. Them: you can do the same thing with the standard tools at much less cost. Me: I don't want to deal with the adjustable wrench over the spline tool issues, whereas the pro tools are much simpler in application due to their one piece construction. Them: OK, but we'd advise otherwise and you could save a bunch... Good people with pragmatic advice. Kudos to them! Had to argue with them just to take my order!