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PostPosted: Thu Apr 07, 2005 6:33 am 
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Posts: 32
Location: Fort Bragg California
I have got my Roubaix down to under 15 3/4, right around 7042 grams if Iam not mistaken . I have a triple Fsa carbon Slk with outboard bottom bracket bearings , which weighs in at a Supposed 830 grams, but I suspect more. I see that could go with a 550g Stella Azura or a Team Fsa and Light weight 110 gram bottom bracket and save 170 grams . I dont know what the spindle length is going to need to be to keep the same chain line. The spindle length is not listed with the Fsa integrated crank spindle combo. Bottom line is anyone have any suggestions as to what crank and bottom bracket combo to use ? I have no problem going to a double and the lighter the better . I am at 170 pounds right now without my camel back . I really like to get out of the saddle and tweak on the cranks and I dont want to shear one off . Any ideas ?


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PostPosted: Thu Apr 07, 2005 9:06 am 
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Location: Germany
I would go for a Stronglight pulsion compact or a FSA K-Force compact with CT Rings from Stronglight. Weight is around 410 and 440 gram.


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Posted: Thu Apr 07, 2005 9:06 am 


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PostPosted: Thu Apr 07, 2005 3:06 pm 
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Location: Georgia
I have the Stronglight Pulsions with the FSA platinum TI BB and the set up weighs about 630 grams. I am 180 lbs and love to sprint and so far have not felt any flex with these.
The FSA SLK mega's are quite heavy, @ 800 grams. Check their website for chain line info and Q.....etc...fullspeedahead.com. Good luck :D


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PostPosted: Thu Apr 07, 2005 4:18 pm 
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Location: Fort Bragg California
I was hoping to find somone who already has swapped there crank and bottom bracket combination out . Fsa mentions q factor but that does not tell me needed spindle length on a conventional bottom bracket . I dont want to mess the chain line up as it shifts verry nice. I just need to find out if I need a 108 or a 114 , ect . I like the idea of the stronglight chainrings . I would really like to get the crank weight and bottom bracket down under 600g that would be a verry good savings


I dont want a compact , I tend to spin out as it is around 35 with my 53- 12 combo and I would like to be able to push 40 . I deffinetly dont want to get a smaller chainrings.

I guess I will get in touch with fsa and find out what there equivilent spindle length would be . Anyone out there know?


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PostPosted: Thu Apr 07, 2005 4:32 pm 
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Just to let you know I have weighed SLK's in a 172.5, they weighed almost 900g complete. K force weighs in at ~760g at the same length.


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PostPosted: Fri Apr 08, 2005 3:26 am 
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Location: Fort Bragg California
.....Ditch this boat anchor of a crank. Help anyone , I just need to find the equivalent bottom bracket and keep the same chain line. I have an Slk integrated crank and spindle weighing in at a whopping 900 grams. Help please , I cant sleep at night with this torturous crank making my frame sag in the middle ... well maybe not that bad. I need lighter.. What spindle length and how to measure the existing Fsa?


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PostPosted: Fri Apr 08, 2005 3:59 am 
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burlguy wrote:
.....Ditch this boat anchor of a crank. Help anyone , I just need to find the equivalent bottom bracket and keep the same chain line. I have an Slk integrated crank and spindle weighing in at a whopping 900 grams. Help please , I cant sleep at night with this torturous crank making my frame sag in the middle ... well maybe not that bad. I need lighter.. What spindle length and how to measure the existing Fsa?


I'd contact FSA to make sure but, you can probably just buy the k-force crankarms w/o BB and slide it in place. I don't think any other spindle/crankarms are going to fit that FSA BB. There's been threads on this before so :search: here on WW's to check. Integrated BB's are not all compatible unfortunately.


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PostPosted: Fri Apr 08, 2005 4:08 am 
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Just my .02 cents on crank weight.. I know people talk about rotational weight being worth twice the other components but I think this is less true for cranks. Most of the crank mass is in a very small diameter. It's not like wheel mass. In fact, I think wheels are where rotational mass definitely makes a difference. Put a light set of wheels on your bike - you will notice immediately faster accelleration.

Not true for cranks. Just my opinion but it's stiffness I notice in the cranks. In fact, I think pedal weight and cleat mass is more important then crank weight. The pedals and cleats are at the most outer circumference of the cranks and will be more noticeable then losing 100g in your crank arms or BB.


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PostPosted: Fri Apr 08, 2005 6:18 am 
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Posts: 32
Location: Fort Bragg California
I want to ditch the Fsa crank setup all together. I dont want to keep the bottom bracket . From all the post I have looked at I am planning on going with extralite ebones wrc or stronglight pulsion ct2. I just need to know what spindle length I need in order to keep a good chainline on my Specialized Roubaix.

I Already have Am classic 350 and Easton ec90 bar and seatpost , Dura ace derailleur, Fsa stem , Dura Ace pedals , Hollow pin chain, Dura ace cassette. The brake pods and front derailleur are Ultegra, till I go up to 10 speed. Carbon seat ,ti quick releases, Conti Supersonic tires . This bottom bracket and crank need to go to a new home.


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PostPosted: Fri Apr 08, 2005 6:29 am 
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Why not DA cranks? They rock.


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PostPosted: Fri Apr 08, 2005 6:33 am 
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Yep. You got almost all DA, just get the DA crankset.

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PostPosted: Fri Apr 08, 2005 6:59 am 
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Joined: Thu Apr 07, 2005 4:30 am
Posts: 32
Location: Fort Bragg California
Hmmm I am in the weight weenies Forum . Oh yeah I should get Dura Ace when there are crank sets 200 grams lighter . No that is not what I want to do . Iam sure they are an excellent product but I dont want them . I listed some components not to brag but to show where I have gone with the bike and why Iam continuing to get the weight down . Yeah I dont have millions at my disposal and have to shop around ... Hence I want to buy the right product the first time . I came here looking for advice... So I will assume Dura Ace is the best advice . Thanks , I will have to call Shimano and get the recomended spindle length to get the right chain line .


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PostPosted: Fri Apr 08, 2005 10:58 am 
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Location: London, UK
cadence90 wrote:
Yep. You got almost all DA, just get the DA crankset.
EXTRALITE E-Bones WR. Sub 500g without rings so 620g including rings should be possible.


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PostPosted: Fri Apr 08, 2005 11:39 am 
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Joined: Thu Sep 02, 2004 10:19 am
Posts: 354
Location: Germany
get propellers, stif and mad light :]]]


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PostPosted: Fri Apr 08, 2005 12:49 pm 
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Joined: Wed Jan 26, 2005 5:59 am
Posts: 222
Location: USA-CT
If you end up going with a double crankset then choose a 108 spindle length for BB. If you choose a BB other than the FSA Isis then the spindle length may vary by a millimeter or so. No big deal unless it gets above 110.

Anyway, FSA Plat Pro Ti in 68x108 with a Pulsion Compact Isis crank seems like a light and intelligent set up.

But then again, I ride Dura Ace. :D

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Posted: Fri Apr 08, 2005 12:49 pm 


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