Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-30-08, 09:19 PM   #1
sp00ki
partly metal, partly real
Thread Starter
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Phil Wood BB + Bob Jackson Vigorelli-- flush, or exposed threads?

I just installed a Phil Wood Ti BB into a Bob Jackson Vigorelli frame; there are ~2 threads exposed on each side when i tighten to what feels like thirty pounds or so. Is this normal? The threads are alloy, so the last thing i want to do is overtighten the cups.

Check it:



Anyone else put this bb on a bj vigorelli?
sp00ki is offline   Reply With Quote
Old 01-31-08, 07:02 AM   #2
anomaly
Senior Member
 
Join Date: Mar 2007
Location: SF
Bikes: 1972 Paramount Track, 1972 Paramount P13 Road, 1972 Paramount Tandem, 1986 Paramount Road, Merckx MXL, Gunnar Cross Hairs, Samson Illusion NJS, KHS Aero Track, Titus Racer X 29er, Tom Palermo Custom Touring
Posts: 1,572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Was the frame properly prepped before you tried to do install it?
anomaly is offline   Reply With Quote
Old 01-31-08, 07:37 AM   #3
sp00ki
partly metal, partly real
Thread Starter
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yeah. this is the third bb installed on this frame.
sp00ki is offline   Reply With Quote
Old 01-31-08, 07:39 AM   #4
barba
Senior Member
 
barba's Avatar
 
Join Date: Nov 2005
Bikes:
Posts: 4,083
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would have your shop chase the threads and try again, just in case. Don't force it.
barba is offline   Reply With Quote
Old 01-31-08, 08:03 AM   #5
shants
roll'em high
 
shants's Avatar
 
Join Date: Feb 2005
Location: columbus, ohio
Bikes:
Posts: 2,391
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
that is fairly typical of phil wood bottom brackets.. you'll know that everything is properly engaged if you can see the notches of the spines pressing flush against the cartridge bearing like in the picture that you've provided. be sure that the other side is the same. if there is a significant gap, then you'll know that you need to tighten it down more. in that case, i'd probably get the threads chased to avoid anything nasty. it's pretty easy to tell if things are too tight, because when you twist the spindle it will resist more than normal or even bind. my suspicion, though, is that you're totally fine.

one thing, though -- since the phil wood bottom brackets are fully adjustable, you'll need to take measurements to ensure that you have the chainline properly dialed in. i'm too lazy right now to write up the meat of the calculations, but if you tell me what bb length you need for your particular crankset and what phil spindle length you have, i can give you some numbers to check.
shants is offline   Reply With Quote
Old 01-31-08, 08:12 AM   #6
ilikebikes
K2ProFlex baby!
 
ilikebikes's Avatar
 
Join Date: Feb 2007
Location: My response would have been something along the lines of: "Does your bike have computer controlled suspension? Then shut your piehole, this baby is from the future!"
Bikes: to many to list
Posts: 6,087
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Mine is mounted on a 71 Schwinn Sport Tourer and has three threads exposed on both sides, so even though I really know nothing about the Phill Wood bb I would guess by what I have just read that we are both fine? (the one on my bike appears to have been there forever)
__________________
You see, their morals, their code...it's a bad joke, dropped at the first sign of trouble. They're only as good as the world allows them to be. I'll show you. When the chips are down, these...These "civilized" people...they'll eat each other. See, I'm not a monster. I'm just ahead of the curve
ilikebikes is offline   Reply With Quote
Old 01-31-08, 08:37 AM   #7
sp00ki
partly metal, partly real
Thread Starter
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by shants View Post
that is fairly typical of phil wood bottom brackets.. you'll know that everything is properly engaged if you can see the notches of the spines pressing flush against the cartridge bearing like in the picture that you've provided. be sure that the other side is the same. if there is a significant gap, then you'll know that you need to tighten it down more. in that case, i'd probably get the threads chased to avoid anything nasty. it's pretty easy to tell if things are too tight, because when you twist the spindle it will resist more than normal or even bind. my suspicion, though, is that you're totally fine.

one thing, though -- since the phil wood bottom brackets are fully adjustable, you'll need to take measurements to ensure that you have the chainline properly dialed in. i'm too lazy right now to write up the meat of the calculations, but if you tell me what bb length you need for your particular crankset and what phil spindle length you have, i can give you some numbers to check.
1) Yes, the splines are flush against the bb-- i suppose that makes sense now that i think about it.

2) The chainline is actually dead on as is. I'll be sure to double check with a ruler after the chain is mounted, but it seems to be working nicely. I have mavic ellipse + eai superstar -> phil wood bb (108) + superbe pro track (165) + sugino zen. As it stands, everything seems ok, but if you know of math that i can use to double check i'd appreciate it.

3) thanks for the response!
sp00ki is offline   Reply With Quote
Old 01-31-08, 12:10 PM   #8
coelcanth
hunter, gatherer
 
coelcanth's Avatar
 
Join Date: Feb 2005
Bikes:
Posts: 1,183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
with a 68mm bottom bracket shell there will always be threads showing

these bb's work in 73mm shells too
coelcanth is offline   Reply With Quote
Old 01-31-08, 06:10 PM   #9
shants
roll'em high
 
shants's Avatar
 
Join Date: Feb 2005
Location: columbus, ohio
Bikes:
Posts: 2,391
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
hey spooki, measure from the drive side face of the bottom bracket shell (not the bottom bracket, but the actual frame itself) to the end of the spindle. for your setup, there should be 20.5mm extended.***

the math -- 109/2 = 54.5. 54.5 - 34 = 20.5. the bottom bracket shell is 68mm wide, so half of the shell is 34mm. i find that it's easier to measure from the bb shell face than to try to eyeball the middle. the 109 comes from the 109mm ideal spindle length for use with the superbe pro track cranks for a standard track chainline.

*** i have read that the mavic eclipse hubs actually set you up for a 45mm chainline. 20.5mm gives you a 42mm chainline, then you need a bottom bracket that is effectively 3mm longer on the drive side, which would make your measurement 23.5 instead of 20.5. i'd say just check and see if you see any deviation at 20.5. if so, jump out to 23.5, because it's likely that the eclipses are pushing your chainline out.

Last edited by shants; 01-31-08 at 06:29 PM.
shants is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 05:29 AM.