Bottom bracket

Alex said:

Sorry to come on with a question but it seemed a good
place to start. My bottom bracket is a shimano 73mm x 113
crank length. cups 1.37x24

I can buy one on e-bay 73x118. Will this fit or will the
5mm difference effect the front crank to rear wheel
sprocket. the cycle has three cranks,

It will fit but the chainline will be wrong. Get one the
same length if the current setup is correct.

Alex said:

My bottom bracket is a shimano 73mm x 113 crank length.
cups 1.37x24

I can buy one on e-bay 73x118.

You can buy a new 113mm UN73 for £11.99 post free from:
tinyurl.com3gx5lOpen ↗

~PB

"Zog The Undeniable" <[email hidden]> wrote in message
news:409d0c1d.0@entanet...

Quoted message said:

It will fit but the chainline will be wrong. Get one the
same length if the current setup is correct.

--------------------------------------------------
Thanks! I was worried that might be the case, will carry
on looking.

"Zog The Undeniable" <[email hidden]> wrote in message
news:409d0c1d.0@entanet...

Quoted message said:

Alex wrote: It will fit but the chainline will be wrong.
Get one the same length if the current setup is correct.

----------------------------------
Just one more question I can buy a 113 X 68 mine is 113 X 73

will it fit or do i need the exact size?

REgards............Alex.

"Pete Biggs" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Alex said:

My bottom bracket is a shimano 73mm x 113 crank length.
cups 1.37x24

I can buy one on e-bay 73x118.

You can buy a new 113mm UN73 for £11.99 post free from:
tinyurl.com3gx5lOpen ↗

----------------------------------------------
Got one Thanks! thanks also to the other help. great group.

Alex.

Alex wrote:
----------------------------------

Quoted message said:

Just one more question I can buy a 113 X 68 mine is
113 X 73

will it fit or do i need the exact size?

You need the exact size. The 68mm version will not be
properly held by the cups.

"Alex" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

"Zog The Undeniable" <[email hidden]> wrote in
message news:409d0c1d.0@entanet...

Quoted message said:

Alex wrote: It will fit but the chainline will be wrong.
Get one the same length if the current setup is correct.

----------------------------------
Just one more question I can buy a 113 X 68 mine is
113 X 73

will it fit or do i need the exact size?

REgards............Alex.

No, you need the right width (which is what the 68 or 73
refers to - it's the width of your bottom bracket shell).

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The 73mm figure is the width of the frame, so this *has* to
be the same.

The 113mm figure is the overall length, so there's a
*little* bit of leeway in this, but if your current
alignment is correct then you don't want to go more than a
couple of mm either side of this, or you'll have trouble
keeping the chain on the desired chainring...

HTH

Huw Francis

"Alex" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

"Zog The Undeniable" <[email hidden]> wrote in
message news:409d0c1d.0@entanet...

Quoted message said:

Alex wrote: It will fit but the chainline will be wrong.
Get one the same length if the current setup is correct.

----------------------------------
Just one more question I can buy a 113 X 68 mine is
113 X 73

will it fit or do i need the exact size?

REgards............Alex.

In message <[email hidden]>

Simon Brooke said:

in message <[email hidden]>, Alex

(') said:

Sorry to come on with a question but it seemed a good
place to start. My bottom bracket is a shimano 73mm x
113 crank length. cups 1.37x24

I can buy one on e-bay 73x118. Will this fit or will
the 5mm difference effect the front crank to rear wheel
sprocket. the cycle has three cranks,

Your front deraileur won't throw far enough to move the
chain onto your big chainwheel. Don't do it.

OR your inner chainring may / will rub on the frame

Quoted message said:

--
Gwyn

Gwyn Oakley said:

OR your inner chainring may / will rub on the frame

Correct. Cured by a longer axle, of course, so not fatal.

--
Guy
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