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


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-06-09, 05:12 PM   #1
PanicDog
Senior Member
Thread Starter
 
PanicDog's Avatar
 
Join Date: Jan 2009
Location: Seattle, WA USA
Bikes:
Posts: 155
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
FSA K-Force Light Crankset Syringe

I bought an FSA K-Force Light compact crankset and I want to install it onto a frame I bought off eBay.

The crankset came with a syringe of clear gel, but this isn't mentioned anywhere in the instructions (http://road.fullspeedahead.com/downloadfly.aspx?download=downloads/FSA+K+Force+Light%2c+SL-K+Light%2c+Team+Issue+(new)+Carbon+Crankset+Instructions.pdf).

The instructions say to "Prepare all threaded contacts(i.e. grease the BB shell threads when installing cups, threadlock all bolts, etc.)."

My frame already has some blue grease on the BB shell threads. Am I supposed to remove that and use the supplied clear gel instead?

What does it mean to "threadlock all bolts"?

Also, what does FSA mean by "etc." How can you put "etc." on installation instructions?! Are there other specific steps involving grease, loctite, etc. that I need to know about?

Thanks!

Last edited by PanicDog; 02-06-09 at 08:00 PM.
PanicDog is offline   Reply With Quote
Old 02-06-09, 06:47 PM   #2
PanicDog
Senior Member
Thread Starter
 
PanicDog's Avatar
 
Join Date: Jan 2009
Location: Seattle, WA USA
Bikes:
Posts: 155
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I found some more information in the MegaExo FAQ. (http://road.fullspeedahead.com/downl...AQ_MegaExo.pdf)

"An amber retaining compounded (Loctite 641) will be included with all carbon Mega
Exo cranksets. The retaining compound should be applied to the spindle and left
arm spindle before installing the left arm onto spindle. There should be no grease or
oil residue in the area of splines before compound and left arm installation."

I don't think I received that with my crankset - it seems different from the clear compound that was included in the syringe with my K-Force Light.

I'm guessing the clear stuff in the syringe is grease. If that is the case, would it be best to remove the existing grease from the bottom bracket shell? What should I use to remove it?

Thanks!
PanicDog is offline   Reply With Quote
Old 02-06-09, 07:25 PM   #3
joejack951
Senior Member
 
joejack951's Avatar
 
Join Date: May 2004
Location: Wilmington, DE
Bikes: 1984 Trek 660, 2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1, 2014 Islabikes CNOC 14 (son's)
Posts: 9,966
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 69 Post(s)
Here's the Loctite 641 that FSA includes: http://aebike.com/page.cfm?action=de...=30&SKU=LU4606

The blue stuff on the bearing shells is a threadlocker that has been preapplied. Do not remove it. The sam stuff should also be on the pinch bolts or single fastening bolt for the non-drive side crankarm. Again, leave it there and install the bolts as you normally would.

My guess is that your syringe is the Loctite 641 as the external bearing cranks don't usually require any grease for installation.

On rereading your post, it sounds like you have some leftover blue threadlocker inside of your bottom bracket shell. I would remove as much of that as possible before installing the new cups. If the hardware supplied by FSA does not have any type of threadlocker preapplied, I would apply something like this to the threads: http://www.amazon.com/Loctite-Thread.../dp/B000XSGJKY

Last edited by joejack951; 02-06-09 at 07:29 PM.
joejack951 is offline   Reply With Quote
Old 02-06-09, 07:27 PM   #4
FightingPanther
Sledge Hammer
 
FightingPanther's Avatar
 
Join Date: Mar 2008
Location: University of Pittsburgh
Bikes: 2008 Lemond - Buenos Aries
Posts: 159
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
oh thats the EPO just inject into arm...
FightingPanther is offline   Reply With Quote
Old 02-06-09, 07:58 PM   #5
PanicDog
Senior Member
Thread Starter
 
PanicDog's Avatar
 
Join Date: Jan 2009
Location: Seattle, WA USA
Bikes:
Posts: 155
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If grease is not required, why do the instructions say to grease the BB shell threads? I took another look at my shell. Most of the grease (I assume it is grease) is inside the shell, but not on the threads.

Here is what everything looks like if that helps.

Shell:


Cups:


Bolt:


Syringe:
PanicDog is offline   Reply With Quote
Old 02-06-09, 09:21 PM   #6
merlin55
Senior Member
 
Join Date: May 2008
Location: SoCal
Bikes:
Posts: 1,246
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think you got the limited edition BALCO crankset....was it signed by any former baseball players?
merlin55 is offline   Reply With Quote
Old 02-06-09, 09:26 PM   #7
joejack951
Senior Member
 
joejack951's Avatar
 
Join Date: May 2004
Location: Wilmington, DE
Bikes: 1984 Trek 660, 2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1, 2014 Islabikes CNOC 14 (son's)
Posts: 9,966
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 69 Post(s)
Quote:
Originally Posted by PanicDog View Post
If grease is not required, why do the instructions say to grease the BB shell threads? I took another look at my shell. Most of the grease (I assume it is grease) is inside the shell, but not on the threads.

Here is what everything looks like if that helps.
If the instruction say to grease the cups, then grease the cups.

Your shell has old grease inside of it. Since you'll be greasing the cups anyway, I wouldn't even bother trying to clean it out.

I have no idea what's in the syringe.
joejack951 is offline   Reply With Quote
Old 02-06-09, 09:28 PM   #8
bikinfool
I have senior moments...
 
bikinfool's Avatar
 
Join Date: Oct 2008
Location: Woodside, CA
Bikes: Many
Posts: 2,152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well the syringe doesn't seem to have the amber Loctite 641, nor do I have an idea what's in the syringe or what should be in the syringe; might be worth a call to FSA or the shop you bought it from.

I take it your bike frame is not new and that is just some remaining grease in your shell from the last bb installation; clean the threads of the shell thoroughly and regrease as indicated in the instructions. The bit of green substance on the cups appears to be a threadlocker and hopefully is intended to work with the greased threads in the shell. The blue stuff on the bolt is very likely a medium threadlocker (probably 242 Loctite or equivalent).

If you want to read about thread concepts and related things like preparation and threadlockers this might be a good article http://parktool.com/repair/readhowto.asp?id=89
bikinfool is offline   Reply With Quote
Old 02-06-09, 11:29 PM   #9
jameswelle
Member
 
Join Date: Oct 2006
Bikes:
Posts: 40
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I contacted FSA through their website about the syringe - will let you know what it is for when/if I hear back.
jameswelle 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 05:45 AM.