Which brake without braze-ons?

PROBLEM: Remove a Nexus 8-speed hub gearbox with its associated
rollerbrake and fit another hub. The new hub cannot take a roller
brake, only a disc brake or it can be used with rim brakes. On the
frame there are no disc brake tabs, no cantilever bosses, nothing
except tapped holes for fitting the forward stay of the rack. The
frame is ali so new brazeons are impossible.

QUESTION: What brake options are there for this rear wheel? Clearly,
whatever frameworks the new brake requires must be bolted to the
seatpost or seat-or chain-stays.

TIA.

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

Andre Jute wrote:
PROBLEM: Remove a Nexus 8-speed hub gearbox with its associated
rollerbrake and fit another hub. The new hub cannot take a roller
brake, only a disc brake or it can be used with rim brakes. On the
frame there are no disc brake tabs, no cantilever bosses, nothing
except tapped holes for fitting the forward stay of the rack. The
frame is ali so new brazeons are impossible.

Would this new wheel having a relatively fat tire and/or fender
(mudguard) be a safe assumption?

QUESTION: What brake options are there for this rear wheel? Clearly,
whatever frameworks the new brake requires must be bolted to the
seatpost or seat-or chain-stays.

The Dia-Compe Bulldog [1] long reach side-pull will clear fat tires and
fenders. These were common on lower-priced (relatively speaking)fat tire
recumbents in the mid to late 1990's. More flex than a "road" short
reach side pull or a cantilever, but effective enough for a rear brake.
Inexpensive enough to ship (carriage) across the pond if no CE distributor.

TIA.

Now you have gone and done it! [2]

[1] http://store.airbomb.com/Items.asp?Cc=169-T-105.
[2]
http://groups.google.com/group/rec.bicycles.tech/msg/ddcec2c5c2cee388?hl=en&dmode=source.

--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful

On Jul 5, 3:26*pm, Tom Sherman
wrote:
Andre Jute wrote:
PROBLEM: Remove a Nexus 8-speed hub gearbox with its associated
rollerbrake and fit another hub. The new hub cannot take a roller
brake, only a disc brake or it can be used with rim brakes. On the
frame there are no disc brake tabs, no cantilever bosses, nothing
except tapped holes for fitting the forward stay of the rack. The
frame is ali so new brazeons are impossible.

Would this new wheel having a relatively fat tire and/or fender
(mudguard) be a safe assumption?

QUESTION: What brake options are there for this rear wheel? Clearly,
whatever frameworks the new brake requires must be bolted to the
seatpost or seat-or chain-stays.

The Dia-Compe Bulldog [1] long reach side-pull will clear fat tires and
fenders. These were common on lower-priced (relatively speaking)fat tire
recumbents in the mid to late 1990's. More flex than a "road" short
reach side pull or a cantilever, but effective enough for a rear brake.
Inexpensive enough to ship (carriage) across the pond if no CE distributor.

On Jul 5, 3:26*pm, Tom Sherman
wrote:
Andre Jute wrote:
PROBLEM: Remove a Nexus 8-speed hub gearbox with its associated
rollerbrake and fit another hub. The new hub cannot take a roller
brake, only a disc brake or it can be used with rim brakes. On the
frame there are no disc brake tabs, no cantilever bosses, nothing
except tapped holes for fitting the forward stay of the rack. The
frame is ali so new brazeons are impossible.

Would this new wheel having a relatively fat tire and/or fender
(mudguard) be a safe assumption?

Sorry, I missed this question the first time round. The answer yes,
622-50 or -60 Big Apple, definitely with a fullsize mudguard. I
haven't had a bike with bare wheels for decades, and don't expect ever
again to have one. I live in Ireland where the chances at any given
moment is that it rains. It is raining now. It has been raining all
week. The bike will have good brakes at the front so the rear brake is
merely for directional control in the wet, but given where I live that
is a pretty important function.

QUESTION: What brake options are there for this rear wheel? Clearly,
whatever frameworks the new brake requires must be bolted to the
seatpost or seat-or chain-stays.

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

In article
,
Andre Jute wrote:

On Jul 5, 3:26*pm, Tom Sherman
wrote:
Andre Jute wrote:
PROBLEM: Remove a Nexus 8-speed hub gearbox with its associated
rollerbrake and fit another hub. The new hub cannot take a roller
brake, only a disc brake or it can be used with rim brakes. On the
frame there are no disc brake tabs, no cantilever bosses, nothing
except tapped holes for fitting the forward stay of the rack. The
frame is ali so new brazeons are impossible.

Would this new wheel having a relatively fat tire and/or fender
(mudguard) be a safe assumption?

QUESTION: What brake options are there for this rear wheel? Clearly,
whatever frameworks the new brake requires must be bolted to the
seatpost or seat-or chain-stays.

The Dia-Compe Bulldog [1] long reach side-pull will clear fat tires and
fenders. These were common on lower-priced (relatively speaking)fat tire
recumbents in the mid to late 1990's. More flex than a "road" short
reach side pull or a cantilever, but effective enough for a rear brake.
Inexpensive enough to ship (carriage) across the pond if no CE distributor.


Thanks, Tom. Do I take it correctly that these sidepull brakes do not
require caliper bosses but are held onto the frame and pivot on a
single central bolt? So all I have to provide is some kind of plate
that can be bolted around the rear stays and has a hole in the middle?

Answering for Tom, that's correct. These are intended for BMX bikes, and
will work. There are many similar super-long-reach single-pivot brakes,
all made for the same market, and buying a nicely-built one will work
well enough.

Interestingly, Brake Therapy does make a conversion kit to adapt a disc
brake to a road bike:

http://therapycomponents.com/road.htm

I have no experience with that thing, and their improbable
"boundary-layer aerodynamics" claim seems unlikely to withstand
real-world testing.

However, if anyone does have real-world experience with this setup, let
me know, as it could be a key part of my "mud-proof CX bike" project.
It's either this thing, or I learn how to braze.

--
Ryan Cousineau http://www.wiredcola.com/
"In other newsgroups, they killfile trolls."
"In rec.bicycles.racing, we coach them."