Q1794: External BB with EBB a bad idea?

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?

Or should I stick with the simple, proven internal BB and square axle
when using an EBB?

Andre Jute
Clearing up the details

Andre Jute schreef:
I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?

Or should I stick with the simple, proven internal BB and square axle
when using an EBB?

Andre Jute
Clearing up the details


I did some measurements Andre and it is a very close call. There are
more adjustments pair of holes. Some are definitely hidden behind the
bearings (OD is 44.2 mm BTW). At best it's gonna be very tricky.

Lou

On Nov 15, 10:24*pm, Andre Jute wrote:
I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?

Or should I stick with the simple, proven internal BB and square axle
when using an EBB?

Andre Jute
Clearing up the details

Exactly the problem on a Calfee Tandem. Had to modify the cup to get
the wrench into the tightening bolt. Eventually went to a 'normal'
internal BB.

On Nov 16, 7:27*am, Lou Holtman wrote:
Andre Jute schreef:

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?

Or should I stick with the simple, proven internal BB and square axle
when using an EBB?

Andre Jute
Clearing up the details

I did some measurements Andre and it is a very close call. There are
more adjustments pair of holes. Some are definitely hidden behind the
bearings (OD is 44.2 mm BTW). At best it's gonna be very tricky.

Lou

Thanks for an effort over and above the call of duty, Lou. I was
looking at eccentric bottom bracket holders of 57mm diameter internal
expandng and 54.5 diameter with external clamping by setscrew from
below. With either one you'd have to remove 44.2mm external BB cups to
be able to see the ECC holder and work on it. On to the next.

Andre Jute
http://members.lycos.co.uk/fiultra/B...20CYCLING.html

On Nov 16, 2:10*pm, Qui si parla Campagnolo
wrote:
On Nov 15, 10:24*pm, Andre Jute wrote:

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?

Or should I stick with the simple, proven internal BB and square axle
when using an EBB?

Andre Jute
Clearing up the details

Exactly the problem on a Calfee Tandem. Had to modify the cup to get
the wrench into the tightening bolt. Eventually went to a 'normal'
internal BB.

On hand of this and the post from Lou, I've concluded it would be dumb
for me, while there are other choices, to buy a set of parts that from
the beginning will be fighting each other. -- AJ

Andre Jute schreef:
On Nov 16, 7:27 am, Lou Holtman wrote:
Andre Jute schreef:

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?
Or should I stick with the simple, proven internal BB and square axle
when using an EBB?
Andre Jute
Clearing up the details
I did some measurements Andre and it is a very close call. There are
more adjustments pair of holes. Some are definitely hidden behind the
bearings (OD is 44.2 mm BTW). At best it's gonna be very tricky.

Lou

Thanks for an effort over and above the call of duty, Lou. I was
looking at eccentric bottom bracket holders of 57mm diameter internal
expandng and 54.5 diameter with external clamping by setscrew from
below. With either one you'd have to remove 44.2mm external BB cups to
be able to see the ECC holder and work on it. On to the next.

Andre Jute
http://members.lycos.co.uk/fiultra/B...20CYCLING.html



I measured on a 53.8 mm internal expanding type of BB holder of my
Singlespeed, so mine is on the small side. I looked at my friends
Rohloff equiped bike with an eccentric BB during yesterdays ride. He has
a Truvativ crankset with external bearings. The adjustment sockets are
perfectly accessible with his setup.
This is his bike:

http://www.idworx-bikes.de/nl/bikes/...ler/bilder.php

There is hope for you then.

Lou

Lou Holtman schreef:
Andre Jute schreef:
On Nov 16, 7:27 am, Lou Holtman wrote:
Andre Jute schreef:

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?
Or should I stick with the simple, proven internal BB and square axle
when using an EBB?
Andre Jute
Clearing up the details
I did some measurements Andre and it is a very close call. There are
more adjustments pair of holes. Some are definitely hidden behind the
bearings (OD is 44.2 mm BTW). At best it's gonna be very tricky.

Lou

Thanks for an effort over and above the call of duty, Lou. I was
looking at eccentric bottom bracket holders of 57mm diameter internal
expandng and 54.5 diameter with external clamping by setscrew from
below. With either one you'd have to remove 44.2mm external BB cups to
be able to see the ECC holder and work on it. On to the next.

Andre Jute
http://members.lycos.co.uk/fiultra/B...20CYCLING.html



I measured on a 53.8 mm internal expanding type of BB holder of my
Singlespeed, so mine is on the small side.

I took a pictu

http://picasaweb.google.nl/LoetjeH/EccentricBB#

Lou

On Nov 17, 6:27*pm, Lou Holtman wrote:
Lou Holtman schreef:



Andre Jute schreef:
On Nov 16, 7:27 am, Lou Holtman wrote:
Andre Jute schreef:

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?
Or should I stick with the simple, proven internal BB and square axle
when using an EBB?
Andre Jute
Clearing up the details
I did some measurements Andre and it is a very close call. There are
more adjustments pair of holes. Some are definitely hidden behind the
bearings (OD is 44.2 mm BTW). At best it's gonna be very tricky.

Lou

Thanks for an effort over and above the call of duty, Lou. I was
looking at eccentric bottom bracket holders of 57mm diameter internal
expandng and 54.5 diameter with external clamping by setscrew from
below. With either one you'd have to remove 44.2mm external BB cups to
be able to see the ECC holder and work on it. On to the next.

Andre Jute
http://members.lycos.co.uk/fiultra/B...20CYCLING.html

I measured on a 53.8 mm internal expanding type of BB holder of my
Singlespeed, so mine is on the small side.

I took a pictu

http://picasaweb.google.nl/LoetjeH/EccentricBB#

Lou

Considering one of my professions, I shouldn't admit this, but a
picture tells a thousand words. Now I have the hang of it. If I go
with the EBB -- and I may not have a choice, either way -- I'll wait
until I have the holder in my hand before I order the bottom bracket,
lest I waste my money buying parts that won't work well together.
Thank you once again, Lou; your reward will be in another place. --
Andre Jute

On Nov 17, 6:07*pm, Lou Holtman wrote:
Andre Jute schreef:



On Nov 16, 7:27 am, Lou Holtman wrote:
Andre Jute schreef:

I'm looking at the Hollowtech II cranksets that come with externally
bearing bottom brackets. Will the shells of the BB hide the adjustment
sockets on an eccentric bottom bracket holder?
Or should I stick with the simple, proven internal BB and square axle
when using an EBB?
Andre Jute
Clearing up the details
I did some measurements Andre and it is a very close call. There are
more adjustments pair of holes. Some are definitely hidden behind the
bearings (OD is 44.2 mm BTW). At best it's gonna be very tricky.

Lou

Thanks for an effort over and above the call of duty, Lou. I was
looking at eccentric bottom bracket holders of 57mm diameter internal
expandng and 54.5 diameter with external clamping by setscrew from
below. With either one you'd have to remove 44.2mm external BB cups to
be able to see the ECC holder and work on it. On to the next.

Andre Jute
http://members.lycos.co.uk/fiultra/B...20CYCLING.html

I measured on a 53.8 mm internal expanding type of BB holder of my
Singlespeed, so mine is on the small side. I looked at my friends
Rohloff equiped bike with an eccentric BB during yesterdays ride. He has
a Truvativ crankset with external bearings. The adjustment sockets are
perfectly accessible with his setup.
This is his bike:

http://www.idworx-bikes.de/nl/bikes/...ler/bilder.php

There is hope for you then.

Lou

Another Idworx bike was on my shortlist but even on the front page of
their netsite it showed a bike with a place where the grinder didn't
reach, where the welding was ugly. That, taken in the light of the
elevated prices of Idworx bikes, was the straw which broke the camel's
back. I ordered a Cannondale instead, because at least it is
beautifully finished, and then the idiot dealer turned out to have
none. Still, there's something about these bikes that draws the eye
and the heart. -- Andre Jute

André Jute wrote:
On Nov 17, 6:07 pm, Lou Holtman wrote:
[...]

This is his bike:

http://www.idworx-bikes.de/nl/bikes/...ler/bilder.php

There is hope for you then.

Lou

Another Idworx bike was on my shortlist but even on the front page of
their netsite it showed a bike with a place where the grinder didn't
reach, where the welding was ugly.[...]

Nooooooooooooooooooooooooooooooooooooooooooooooooo ooooooooooooooooooooo!

Welds should NOT be ground!

--
Tom Sherman - 42.435731,-83.985007
If you are not a part of the solution, you are a part of the precipitate.