q: removing front wheels on nexus/nexave bikes

ric said:

hi all,
anyone got experience of shimano nexave-braked bikes? Given the front
wheel has an internal drum brake, how easy is it to quick release the
front wheel for transport? Do the front wheels just drop out or do
they need "disconnecting" from the brake mechanism?
Cheers!

This might depend upon the model. There are at least two
different designs, disc brake mount, and braze on mount.

The brake itself is attached to the wheel, and removing
the wheel removes the brake as well. My trek has one of
these that uses a disc brake mount, and the brake cable
clips into the brake mechanism, and can be very quickly
unclipped from the brake. It takes a similar time to
removing a wheel that has v brakes.

I don't know if the braze on version is different.

Martin.

Martin Dann said:

ric said:

hi all,
anyone got experience of shimano nexave-braked bikes? Given the front
wheel has an internal drum brake, how easy is it to quick release the
front wheel for transport? Do the front wheels just drop out or do
they need "disconnecting" from the brake mechanism?
Cheers!

This might depend upon the model. There are at least two
different designs, disc brake mount, and braze on mount.

The brake itself is attached to the wheel, and removing
the wheel removes the brake as well. My trek has one of
these that uses a disc brake mount, and the brake cable
clips into the brake mechanism, and can be very quickly
unclipped from the brake. It takes a similar time to
removing a wheel that has v brakes.

I don't know if the braze on version is different.

Martin.

aha, worked it out. slowly. you need to free up enough slack in the
cable to pop out the black cable clip (i think i can just about do
this using the barrel adjuster on the front shifter - one extreme has
slack, other is normal use) and then once this is done there's a
silver metal U shaped thing that unclips from the top of the brake
adaptor that's bolted to the braze-on. this lifts off. once done,
front wheel pops out....

now, i'm not at all sure i could do the rear wheel at the roadside...!

ric

ric said:

On 20 Jul, 22:29, Martin Dann <[email hidden]> wrote:

Quoted message said:

aha, worked it out. slowly. you need to free up enough slack in the
cable to pop out the black cable clip (i think i can just about do
this using the barrel adjuster on the front shifter - one extreme has
slack, other is normal use) and then once this is done there's a
silver metal U shaped thing that unclips from the top of the brake
adaptor that's bolted to the braze-on. this lifts off. once done,
front wheel pops out....

Try lineing up the cuts in the barrel shifter, squeeze the
brake lever. Pull the outer away from the barrel shifter
as you release the lever, and pull the cable through the
cuts. This might give enough slack to do the rest.

Quoted message said:

now, i'm not at all sure i could do the rear wheel at the roadside...!

IMHO it would be best to learn how to do this. Even if you
plan on fixing the tube, sometimes you get punctures that
need a replacement tube.

I don't have any nexus rear wheels, and much prefer
replacing tubes if I have a puncture away from home.

Martin.

ric said:

hi all,
anyone got experience of shimano nexave-braked bikes? Given the
front wheel has an internal drum brake, how easy is it to quick
release the front wheel for transport? Do the front wheels just
drop out or do they need "disconnecting" from the brake mechanism?

I have a Nexus front [dynamo] wheel. AFAIK, the Nexave is
mechanically similar but with better thermal capacity---in which case
it is a roller brake rather than a drum brake and is nutted onto the
side of the hub rather than being internal. Either way, the front
wheel is easy; one disconnects the quick release brake cable (by
wedging the cam apart with a screwdriver if it is as tight as mine,
although the manual probably indicates the use of a finger), loosens
the axle and pulls the wheel and brake reaction arm out of the forks.
`Assembly is the reverse of disassembly', as a Haynes manual would say
(make sure the brake reaction arm is fitted into its braze-on, the
axle is square and tightened to the forks and the brake cable is
properly reconnected).

The rear wheel, OTOH...

--
Mark

Martin Dann said:

ric said:

On 20 Jul, 22:29, Martin Dann <[email hidden]> wrote:
aha, worked it out. slowly. you need to free up enough slack in the
cable to pop out the black cable clip (i think i can just about do
this using the barrel adjuster on the front shifter - one extreme has
slack, other is normal use) and then once this is done there's a
silver metal U shaped thing that unclips from the top of the brake
adaptor that's bolted to the braze-on. this lifts off. once done,
front wheel pops out....

Try lineing up the cuts in the barrel shifter, squeeze the
brake lever. Pull the outer away from the barrel shifter
as you release the lever, and pull the cable through the
cuts. This might give enough slack to do the rest.

Quoted message said:

now, i'm not at all sure i could do the rear wheel at the roadside...!

IMHO it would be best to learn how to do this. Even if you
plan on fixing the tube, sometimes you get punctures that
need a replacement tube.

I don't have any nexus rear wheels, and much prefer
replacing tubes if I have a puncture away from home.

Martin.

ta, will try it. in *theory* i know how to remove the rear, but i
really should practise in the warm and dry of the house before having
to do it in anger....!