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Can't get a 83mm bb for sunday will 68 or 73 work?

Apr 9, 2007
49
0
KC, NS, Canada
no, this will not work, the shell for the bb is 83mm wide, meaning that if you tried to put a 68 or 73 on it would be much to short, do you have to get an fsa, pick up a raceface one or something to do your job.
 

ZHendo

Turbo Monkey
Oct 29, 2006
1,661
147
PNW
if it says that the bb is a 83mm, then that is the only one that will work. fsa does make them for the gap megaexo cranks, unless you are talking isis.
 
Apr 16, 2005
457
0
Charlotte, NC
I think that it wouldnt matter. Because the BB plastic insinde part will just be sitting there without touching the other barings. Might get dirty though.
Or does it matter?
 

xemini

Monkey
Nov 4, 2004
255
0
what do you guys recommend for a good durable bottom bracket for my sunday then? that is 83mm?
 

tsamps

Chimp
May 6, 2007
58
0
I just got an 83mm FSA bb for a sunday. Go to you local bike shop and see if they can order from quality or bti (i think its bti, or somethin like that). The platinum dh bb that fsa makes comes in that size, in an isis, thats your option.
 

blue

boob hater
Jan 24, 2004
10,160
2
california
FSA will be making Gravity Lights for 2008 in MegaExo. They currently make the Gaps and Gravitys in MegaExo 83mm.
 

frznnomad

Turbo Monkey
Jun 20, 2005
2,226
0
a-town biatches
ummm no. everbody and there mother makes a 83mm bb and they also make the internal bearing and crank combos. for fsa you have the gravity and the gap crank set. then you have all the raceface line, shimano saint and hone, and then i think truvative makes them too im just not 100% on which model. so there out there man you just got to dig for them sometimes.
 

bizutch

Delicate CUSTOM flower
Dec 11, 2001
15,928
24
Over your shoulder whispering
ummm no. everbody and there mother makes a 83mm bb and they also make the internal bearing and crank combos. for fsa you have the gravity and the gap crank set. then you have all the raceface line, shimano saint and hone, and then i think truvative makes them too im just not 100% on which model. so there out there man you just got to dig for them sometimes.
but with Truvativ's you get a lame 53mm chainline instead of 56.
 

xemini

Monkey
Nov 4, 2004
255
0
-quote from the bike shop (with that bottom bracket, the only thing that differentiates between a 73 and an 83mm is the sleeve, which i will reuse) (thread depth on the cups is identical) (i contacted FSA to make sure)

this is what the bike shop told me so i guess 73 mm will work on an 83mm bottom bracket for a sunday... can anyone confirm this?
 

Dogboy

Turbo Monkey
Apr 12, 2004
3,208
581
Durham, NC
That is typically all that differentiates a 68/73mm BB, but it seems unlikely that an 83mm BB would only use a different cup. It sounds like the shop has assured you that it will work, so have them install the BB and if it doesn't work they can eat the labor cost and get you the correct BB.
 

vitox

Turbo Monkey
Sep 23, 2001
2,936
1
Santiago du Chili
-quote from the bike shop (with that bottom bracket, the only thing that differentiates between a 73 and an 83mm is the sleeve, which i will reuse) (thread depth on the cups is identical) (i contacted FSA to make sure)

this is what the bike shop told me so i guess 73 mm will work on an 83mm bottom bracket for a sunday... can anyone confirm this?
time to look for a new shop
 

xemini

Monkey
Nov 4, 2004
255
0
so i 73mm wont work then? i emailed them and said not to order it a week ago then they tell me todays its in and that it will work.. im not sure what to do, its gonna cost 117$ cnd plus service probably and its not even the correct 83mm for an ironhorse sunday.. what should i do can someone confirm for sure if this will work or not
 

coma13

Turbo Monkey
Feb 14, 2006
1,082
0
so i 73mm wont work then? i emailed them and said not to order it a week ago then they tell me todays its in and that it will work.. im not sure what to do, its gonna cost 117$ cnd plus service probably and its not even the correct 83mm for an ironhorse sunday.. what should i do can someone confirm for sure if this will work or not
IT WILL NOT WORK... YOUR FRAME REQUIRES AN 83MM BOTTOM BRACKET SHELL, NOT A 68, NOT A 73... 83MM ONLY!
 
Apr 9, 2007
49
0
KC, NS, Canada
ok heres the deal, for an outboard bottom bracket they use this little sleeve in the middle, its for keeping junk out of your frame, that is what makes up that spaceing difference, you CAN reuse the sleeve but its not recommended, the threads would be the same, and you could use the cups, but make sure you get the right sleeve, race face will even sell you a conversion kit for like 10 bucks for there x-type bottom brackets, but you have to have the right spindle length for your cranks other wise your SOL!
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
FSA Gap's do exist in 83mm, they're a really nice crankset for 07 and come on the 07 Sunday Team. Not sure if you can buy them aftermarket (in 83mm) from FSA though.

But yeah, like everyone has said a million times - you need an 83mm crankset for a sunday, 68/73mm sets won't work. Nice to see it's sinking in for this guy eh...
 

RaID

Turbo Monkey
FSA Gap's do exist in 83mm, they're a really nice crankset for 07 and come on the 07 Sunday Team. Not sure if you can buy them aftermarket (in 83mm) from FSA though.

But yeah, like everyone has said a million times - you need an 83mm crankset for a sunday, 68/73mm sets won't work. Nice to see it's sinking in for this guy eh...
the fsa website says they dont make 83mm BB version, i guess they could be OEM
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
fsa website is always out of date.. not the source to use
 

Patan-DH

Monkey
Jun 9, 2007
458
0
Patagonia
I got the isis FSA platinum DH 128/83mm
6 or 7 races since....so far so good. just bent a couple of hussefelts cranks after hitting a rock and the spindle smooth as ever and straight.

I seen that truvativ also makes (ore used to) a gipapipe DH in that size. With 4 bearings instead of 2 like the FSA.
First I was thinking of getting the gigapipe but it came that was WAY more expensive than the FSA one.

Talking about this FSA 83mm bb.
¿How durable is it? ¿anyone have broken one yet?

And i wonder if when it gets worn out you can replace the bearings with universal ones.......or are these specific for the bb?
 

xemini

Monkey
Nov 4, 2004
255
0
well i have the FSA gap cranks that came stock on my 06 sunday team, and the bottom bracket is getting loose so it needs replacing, so since i have the cranks from it will the 73 mm work by just reusing the sleeve like someone said earlier?
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
Yes, should work.... get some pics or compare the external BB cups for yourself to make sure.

As long as the cup width L/R are identical (ie they protrude the same distance from the BB shell as the old ones) you're okay. The sleeve should fit, but it isn't critical on the sunday anyway because the BB shell is sealed/closed (there are no holes inside it for water to enter via the frame).
 

switch98

Chimp
Jun 23, 2007
3
0
The cups are identical on a bb with a 68/73mm shell, and that of one with an 83mm shell, the only difference is the center piece, which does nothing, FSA themselves said to reuse the sleeve from his old bb, how do I know? because I was beside the other mechainic from our shop when they called, so before you open your mouths and make a dammed fool out of yourself by saying it won;t work, or get a new shop, do some research like we at the shop have already done.
 

jvnixon

Turbo Monkey
May 14, 2006
2,325
0
SickLines.com
The cups are identical on a bb with a 68/73mm shell, and that of one with an 83mm shell, the only difference is the center piece, which does nothing, FSA themselves said to reuse the sleeve from his old bb, how do I know? because I was beside the other mechainic from our shop when they called, so before you open your mouths and make a dammed fool out of yourself by saying it won;t work, or get a new shop, do some research like we at the shop have already done.
Here's a good question.

Why is this guy even online asking these questions if this shop knows what they're doing. (3 pages long:lighten: )

What shop is this anyway?
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
The cups are identical on a bb with a 68/73mm shell, and that of one with an 83mm shell, the only difference is the center piece, which does nothing, FSA themselves said to reuse the sleeve from his old bb, how do I know? because I was beside the other mechainic from our shop when they called, so before you open your mouths and make a dammed fool out of yourself by saying it won;t work, or get a new shop, do some research like we at the shop have already done.
No, he just phrased his question/s INCREDIBLY vaguely up until post #34 where he finally mentioned his exact problem and what he was intending to do, to which I replied (in post #35) saying that it's fine.

We aren't mind readers... the answers you get are only going to be as good as you can phrase the question you want to ask. You might be the damned fool here for expecting a response any different from what was recieved, given the vague questions he asked.
 

davep

Turbo Monkey
Jan 7, 2005
3,276
0
seattle
Excatly..there was NO mention of the fact that the cranks in question were OEM only 83mm cranks with using hollowtech/x-type bb. That is why there are so many varied responses...all correct within the information given by the O.P. As you can see mr shop guy, most thought the cranks were ISIS and the O.P. said nothing to the contrary.
 

switch98

Chimp
Jun 23, 2007
3
0
Excatly..there was NO mention of the fact that the cranks in question were OEM only 83mm cranks with using hollowtech/x-type bb. That is why there are so many varied responses...all correct within the information given by the O.P. As you can see mr shop guy, most thought the cranks were ISIS and the O.P. said nothing to the contrary.
For one, who still uses ISIS bbs in full on dh bikes anymore, those of you who do, your bike is not what it should be, two, he never once said it was ISIS, so those of you whom assumed they were, well we all know what happens when you assume things.