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My Monday morning commute

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UK and Europe
Published
18 February 2008
Last activity
20 February 2008
Original author
Tom Crispin
Posts
23
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  1. Being half term, and with a little time on my hands, I have enrolled
    in a bike maintenance course in Brixton. This invovles a longer
    commute than I am used to.

    I looked up a cycle only route from Lee Green to Brixton using TfL's
    journey planner, and immediately discounted the suggested route as
    being too slow using side roads. Instead I chose a less direct route
    using major roads:

    Lee Green to Lewisham (A20)
    Lewisham to New Cross (A20)
    New Cross to Peckham (A202)
    Peckham to Camberwell (A202)
    Camberwell to Brixton (Side roads & A23)

    This would be a particularly unremarkable commute, except for one
    fact... I was haulling a trailer with four children's bikes aboard in
    urgent need of a service.

    The A20 is a major trunk route into central London, it is wide and for
    about half the length of the commute above it has bus lanes. Cycle
    lanes were evident for parts, but with a wide trailer they were of no
    use to me.

    Soon after I set off I was overtaken by a Virgin Media van. I passed
    this van in Lewisham, and was passed again by it shortly before New
    Cross. We then passed each other several more times, me passing the
    van in bus lanes while it was held up in traffic at lights, and it
    passing me when the traffic was flowing more freely. At the point
    where I turned off the A202 the van was nowhere to be seen - though I
    suppose it may have reached its destination or turned off somewhere
    between Peckham and Camberwell. I would prefer to believe that I was
    faster than the van even with my load.

    The commute was pleasant. I was rarely held up, found car drivers
    polite and good mannered, and never had a problem moving from the bus
    lanes to main lane to pass stopped busses.

    Haulling such a load, a Rohloff hub is a boon. Approaching red lights
    I was able to coast to a stop in a low gear, usually 3, for a steady
    acceleration through the gears after the lights changed to green.

    Hills are a slow effort, but fortunately there is nothing too long
    between home and Brixton - the worst being the climb from the
    Ravensbourne Valley in Lewisham to New Cross. I simply changed into
    first gear and spun my legs all the way to the summit.

    The six and a half miles took me 45 minutes.

    My unladen return journey took me 30 minutes. I wasn't pushing myself
    either way, though with the traffic and the lights, I don't suppose I
    could have shaved much time off my return journey.

    The course itself is excellent.

    I learnt how to service and clean hubs, remove casettes, how to
    replace wheels correctly, how to strip and service V-brakes, replace
    rear brake cables and recycle the old rear brake cable as a front
    brake cable. Day off tomorrow. Wednesday is servicing gears and
    other types of brake. I'm not yet sure about Thursday and Friday, but
    should be returning the older Raleigh bikes to schools and taking in
    four Islabikes: a Beinn 20, a Beinn 24, a Beinn 26 and a Luath 700.

  2. Tom Crispin said:

    ...I have enrolled
    in a bike maintenance course in Brixton... I learnt how to...replace


    rear brake cables and recycle the old rear brake cable as a front
    brake cable.

    Shirley not. If a brake cable is knackered enough to need
    replacement, why would you recycle it on the primary brake? Whilst
    the riders of your machines are not likely to have quite the hand
    strenght of an adult I would have thought that the cost of brake
    cables would suggest a fairly conservative strategy of replacement
    given the application. I can't iamgine this practice being worth
    while other than perhaps if you damage the end of a rear cable during
    installation. Would you be able to ask the instructor for his/her
    reasoning? I would be interested to know what it was

    best wishes
    james

  3. In article
    <[email hidden]>,

    Quoted message said:

    ...I have enrolled in a bike maintenance course in Brixton... I
    learnt how to...replace
    rear brake cables and recycle the old rear brake cable as a front
    brake cable.

    Since most cable breakages occur at the lever end of the cable this
    is a dangerous practice.

    --
    A T (Sandy) Morton
    on the Bicycle Island
    In the Global Village
    http://www.millport.net

  4. Sandy Morton said:

    In article
    <[email hidden]>,

    Quoted message said:

    ...I have enrolled in a bike maintenance course in Brixton... I
    learnt how to...replace
    rear brake cables and recycle the old rear brake cable as a front
    brake cable.

    Since most cable breakages occur at the lever end of the cable this
    is a dangerous practice.

    This is what we were told...

    Part of servicing a bike's brakes is checking the brake cables. Once
    you have taken a rear brake cable out to check it. It should not be
    reclamped because this weakens the cable too much at the clamp point.
    However, if it is fine, trim off the end and use it as a front brake
    cable.

    If this advice is not sound, I'd like to know.

  5. Tom Crispin said:

    On Tue, 19 Feb 2008 09:45:02 +0000 (GMT), Sandy Morton

    Quoted message said:

    In article
    <[email hidden]>,

    Quoted message said:

    ...I have enrolled in a bike maintenance course in Brixton... I
    learnt how to...replace
    rear brake cables and recycle the old rear brake cable as a front
    brake cable.

    Quoted message said:

    Since most cable breakages occur at the lever end of the cable this
    is a dangerous practice.

    This is what we were told...

    Part of servicing a bike's brakes is checking the brake cables. Once
    you have taken a rear brake cable out to check it. It should not be
    reclamped because this weakens the cable too much at the clamp point.
    However, if it is fine, trim off the end and use it as a front brake
    cable.

    If this advice is not sound, I'd like to know.

    As Sandy says, cable breaks are common and the lever end (the nipple
    shears off). In your situation (shared bikes used by children in your
    care) I would have thought that a program of replacing brake cables
    at regular intervals would be sensible, perhaps annully (I assume the
    bikes are stored in a dry environment). Perhaps others will suggest a
    different schedule. I would have thought that a maintenance manual
    (checks/adjustments performed per-ride,perhaps mothly, termly and
    annually) and log (checks done on a which bike, components replaced
    etc) might be valuable as a record of responsibilities discharged and
    of which bits are most reliable. If the age and usage of the cable is
    known then the advice given may not be unreasonable. Personally I
    reclamp my brake cables sometimes as your instructor recommends not
    to. I have sheared off the nipple on a brake cable

    best wishes
    james

  6. Tom Crispin said:

    This is what we were told...

    I have never had a brake cable snap, I have always replaced them long
    before that (when they get gunked up, and start sticking).

    Quoted message said:

    Part of servicing a bike's brakes is checking the brake cables. Once
    you have taken a rear brake cable out to check it. It should not be
    reclamped because this weakens the cable too much at the clamp point.

    Once I get the clamp at the correct position, I don't touch the clamp
    again until I need to replace the cable.

    Cables can be checked, cleaned and oiled in-situ. Inspect the cable as
    it goes into the clamp (from the brake level side). If there is any
    fraying, the you should replace immediately.

    Quoted message said:

    However, if it is fine, trim off the end and use it as a front brake
    cable.

    TBH I have never really thought about recycling brake cables, I regard
    them as safety parts that need replacing every so often. The cost of
    brake cables is very small for me considering my peace of mind.

    Quoted message said:

    If this advice is not sound, I'd like to know.

  7. Quoted message said:

    Perhaps others will suggest a
    different schedule. I would have thought that a maintenance manual
    (checks/adjustments performed per-ride,perhaps mothly, termly and
    annually)

    Brakes should be checked daily. AIUI the HW code says something like
    every time you use a bike you *MUST* check the brakes are working
    efficiently. This is something you need to teach the kids.

    If I were you, I would regualarly (pref. dayly) check the brakes on
    every bike. Just squeeze both brake levers on all bikes to see that they
    do opperate the brake mechanisms, and that the levers don't touch the
    handle bars.

    Then get the kids to do the same, make the check that the blocks are
    aligned on the wheel rims, and make them ride a short distance and stop
    (or something).

  8. On Tue, 19 Feb 2008 02:30:27 -0800 (PST), [email hidden]

    Quoted message said:
    Tom Crispin said:

    On Tue, 19 Feb 2008 09:45:02 +0000 (GMT), Sandy Morton

    Quoted message said:

    In article
    <[email hidden]>,
    <[email hidden]> wrote:
    > ...I have enrolled in a bike maintenance course in Brixton... I
    > learnt how to...replace
    > rear brake cables and recycle the old rear brake cable as a front
    > brake cable.

    Quoted message said:

    Since most cable breakages occur at the lever end of the cable this
    is a dangerous practice.

    This is what we were told...

    Part of servicing a bike's brakes is checking the brake cables. Once
    you have taken a rear brake cable out to check it. It should not be
    reclamped because this weakens the cable too much at the clamp point.
    However, if it is fine, trim off the end and use it as a front brake
    cable.

    If this advice is not sound, I'd like to know.

    As Sandy says, cable breaks are common and the lever end (the nipple
    shears off). In your situation (shared bikes used by children in your
    care) I would have thought that a program of replacing brake cables
    at regular intervals would be sensible, perhaps annully (I assume the
    bikes are stored in a dry environment). Perhaps others will suggest a
    different schedule. I would have thought that a maintenance manual
    (checks/adjustments performed per-ride,perhaps mothly, termly and
    annually) and log (checks done on a which bike, components replaced
    etc) might be valuable as a record of responsibilities discharged and
    of which bits are most reliable. If the age and usage of the cable is
    known then the advice given may not be unreasonable. Personally I
    reclamp my brake cables sometimes as your instructor recommends not
    to. I have sheared off the nipple on a brake cable

    I will clarify with the course leader on Wednesday.

    Perhaps we were only recycling the rear cables because we had removed
    perfectly sound cables for practise.

    My pool bikes have their brakes checked before every trip - usually
    three times a week. I do a more rigourous check every half term. None
    of them have had a proper brake service.

    Most are stored in a dry secure shed, but several older ones are left
    chained up in the outside bike racks at other schools: Lee Manor has
    four and St Margaret's three.

  9. On Tue, 19 Feb 2008 11:01:46 GMT, Martin Dann <[email hidden]>

    Quoted message said:
    Quoted message said:

    Perhaps others will suggest a
    different schedule. I would have thought that a maintenance manual
    (checks/adjustments performed per-ride,perhaps mothly, termly and
    annually)

    Brakes should be checked daily. AIUI the HW code says something like
    every time you use a bike you *MUST* check the brakes are working
    efficiently. This is something you need to teach the kids.

    If I were you, I would regualarly (pref. dayly) check the brakes on
    every bike. Just squeeze both brake levers on all bikes to see that they
    do opperate the brake mechanisms, and that the levers don't touch the
    handle bars.

    Then get the kids to do the same, make the check that the blocks are
    aligned on the wheel rims, and make them ride a short distance and stop
    (or something).

    Children do a four point check before riding:
    A ir in tyres
    B rakes working
    C hain running smoothly
    D anglers tucked away

    The brake test is put on front brake, push bike forward so the rear
    end lifts up. Put on back brake, pull bike backward so the front end
    lifts up.

  10. Tom Crispin said:

    Children do a four point check before riding:
    A ir in tyres
    B rakes working
    C hain running smoothly
    D anglers tucked away.

    Quoted message said:

    The brake test is put on front brake, push bike forward so the rear
    end lifts up. Put on back brake, pull bike backward so the front end
    lifts up.

    That sounds sensible, I usually do something similar with the front, I
    pull the front brake as I am walking it out the garage, the back lifts
    up, and I don't loose any time. However I feel much better testing the
    brakes once I am on the bike, and I can test them loaded with my weight.

  11. Quoting <[email hidden]>:

    Quoted message said:

    On Feb 18, 10:32 pm, Tom Crispin

    Quoted message said:

    in a bike maintenance course in Brixton... I learnt how to...replace


    rear brake cables and recycle the old rear brake cable as a front
    brake cable.
    Shirley not. If a brake cable is knackered enough to need
    replacement, why would you recycle it on the primary brake?

    Perhaps it's just mangled or rusted in the bit that's going to be cut off
    when it becomes a front brake cable. If the clamped portion is chewed up
    enough, it might be unusable with the rest of the cable being fine.
    --
    David Damerell <[email hidden]> Oil is for sissies
    Today is Second Saturday, February - a weekend.

  12. David Damerell said:

    Quoting <[email hidden]>:

    Quoted message said:

    On Feb 18, 10:32 pm, Tom Crispin

    Quoted message said:

    in a bike maintenance course in Brixton... I learnt how to...replace


    rear brake cables and recycle the old rear brake cable as a front
    brake cable.
    Shirley not. If a brake cable is knackered enough to need
    replacement, why would you recycle it on the primary brake?

    Perhaps it's just mangled or rusted in the bit that's going to be cut off
    when it becomes a front brake cable. If the clamped portion is chewed up
    enough, it might be unusable with the rest of the cable being fine.

    I just don't fancy lowering my considerable weight down a steep hill in
    the knowledge that the mechanism keeping my progress in check is
    operated by a cable that's probably ok because the rusty mangled bits
    have been cut off.

    I keep a supply of brake cables in the shed (pretty cheap in bulk) and
    replace them all in the springtime. A brake may fail on me, but it
    won't be because I saved a few pence by re-using a cable

    --
    Brian G
    www.wetwo.co.uk

  13. "Brian G" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    David Damerell said:

    Quoting <[email hidden]>:

    Quoted message said:

    On Feb 18, 10:32 pm, Tom Crispin
    > in a bike maintenance course in Brixton... I learnt how to...replace
    rear brake cables and recycle the old rear brake cable as a front
    brake cable.
    Shirley not. If a brake cable is knackered enough to need
    replacement, why would you recycle it on the primary brake?

    Perhaps it's just mangled or rusted in the bit that's going to be cut off
    when it becomes a front brake cable. If the clamped portion is chewed up
    enough, it might be unusable with the rest of the cable being fine.

    I just don't fancy lowering my considerable weight down a steep hill in
    the knowledge that the mechanism keeping my progress in check is operated
    by a cable that's probably ok because the rusty mangled bits have been cut
    off.

    How about a cable that's probably ok because the rusty mangled bits have
    been cut off and it's been checked for other damage? The latter check being
    something most people would do anyway.

    Quoted message said:

    I keep a supply of brake cables in the shed (pretty cheap in bulk) and
    replace them all in the springtime. A brake may fail on me, but it won't
    be because I saved a few pence by re-using a cable

    Do you use SS cables?

    clive

  14. Clive George said:

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

    Quoted message said:
    Quoted message said:

    I just don't fancy lowering my considerable weight down a steep hill
    in the knowledge that the mechanism keeping my progress in check is
    operated by a cable that's probably ok because the rusty mangled bits
    have been cut off.

    How about a cable that's probably ok because the rusty mangled bits have
    been cut off and it's been checked for other damage? The latter check
    being something most people would do anyway.

    I'm not qualified to check cables adequately (for stress in use, rather
    than visible damage)

    Quoted message said:
    Quoted message said:

    I keep a supply of brake cables in the shed (pretty cheap in bulk) and
    replace them all in the springtime. A brake may fail on me, but it
    won't be because I saved a few pence by re-using a cable

    Do you use SS cables?

    No, zinc I think.

    --
    Brian G
    www.wetwo.co.uk

  15. "Brian G" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Clive George said:

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

    Quoted message said:
    Quoted message said:

    I just don't fancy lowering my considerable weight down a steep hill in
    the knowledge that the mechanism keeping my progress in check is
    operated by a cable that's probably ok because the rusty mangled bits
    have been cut off.

    How about a cable that's probably ok because the rusty mangled bits have
    been cut off and it's been checked for other damage? The latter check
    being something most people would do anyway.

    I'm not qualified to check cables adequately (for stress in use, rather
    than visible damage)

    Visual inspection is sufficient - IME you can see if a cable is ok.

    Quoted message said:
    Quoted message said:
    Quoted message said:

    I keep a supply of brake cables in the shed (pretty cheap in bulk) and
    replace them all in the springtime. A brake may fail on me, but it
    won't be because I saved a few pence by re-using a cable

    Do you use SS cables?

    No, zinc I think.

    Ah. SS are quite a lot better IMO because they don't suffer from rotting
    away in the way galvanised ones do. More expensive, but I reckon it's worth
    it. I'll not have cables failing because I saved a few pence by buying
    substandard cable :-)

    clive

  16. On Tue, 19 Feb 2008 15:19:19 +0000, Brian G <[email hidden]>

    Quoted message said:
    David Damerell said:

    Quoting <[email hidden]>:

    Quoted message said:

    On Feb 18, 10:32 pm, Tom Crispin
    > in a bike maintenance course in Brixton... I learnt how to...replace
    rear brake cables and recycle the old rear brake cable as a front
    brake cable.
    Shirley not. If a brake cable is knackered enough to need
    replacement, why would you recycle it on the primary brake?

    Perhaps it's just mangled or rusted in the bit that's going to be cut off
    when it becomes a front brake cable. If the clamped portion is chewed up
    enough, it might be unusable with the rest of the cable being fine.

    I just don't fancy lowering my considerable weight down a steep hill in
    the knowledge that the mechanism keeping my progress in check is
    operated by a cable that's probably ok because the rusty mangled bits
    have been cut off.

    I keep a supply of brake cables in the shed (pretty cheap in bulk) and
    replace them all in the springtime. A brake may fail on me, but it
    won't be because I saved a few pence by re-using a cable

    A box of 100 brake cables is £90 from Wiggle. At the moment I have a
    fleet of about 40 bikes. To replace all cables annually would cost
    about £72 in cables. If half the cables could be reused that would be
    a saving of £36. It would certainly not be worth the saving if it
    comprimised safety, but if there're no safety issues, then it's a
    worthwhile saving.

  17. Tom Crispin said the following on 19/02/2008 16:27:

    Quoted message said:

    A box of 100 brake cables is £90 from Wiggle. At the moment I have a
    fleet of about 40 bikes. To replace all cables annually would cost
    about £72 in cables. If half the cables could be reused that would be
    a saving of £36. It would certainly not be worth the saving if it
    comprimised safety, but if there're no safety issues, then it's a
    worthwhile saving.

    The only time I would ever re-use a brake cable in that way is if I'd
    taken it off for reasons other than wear and couldn't refit it to the
    rear because of crushing where it's clamped. There is absolutely no way
    I would take a cable off the rear that's been on the bike for any length
    of time and shorten it to use on the front. For derailleur cables,
    that's fine if there's no visible damage, but not brakes.

    Having said that, my brake cables last a darn sight longer than a year
    so a rear brake cable that's only been on the bike a year could be
    re-used on the front, but then why change it at all?

    I suppose these days the other thing you specifically need to be aware
    of, and I'm sure you are, is a liability issue just in case a little
    darling did ever actually manage to break a cable and crash!

    --
    Paul Boyd
    http://www.paul-boyd.co.uk/

  18. In article <[email hidden]>, Tom Crispin

    Quoted message said:

    A box of 100 brake cables is £90 from Wiggle.

    I bought several hundred cables at a time - all the hiring fleet had
    the inners replaced at least once a year - joe public are sore on
    hired bikes. I paid less than 20p each inc. VAT.

    Quoted message said:

    At the moment I have a fleet of about 40 bikes.

    I had about 200.

    --
    A T (Sandy) Morton
    on the Bicycle Island
    In the Global Village
    http://www.millport.net

  19. Clive George said:

    Visual inspection is sufficient - IME you can see if a cable is ok.

    Ah. They could saved a few man hours at the Forth Bridge, then.

    Quoted message said:
    Quoted message said:
    Quoted message said:

    Do you use SS cables?

    No, zinc I think.

    Ah. SS are quite a lot better IMO because they don't suffer from rotting
    away in the way galvanised ones do. More expensive, but I reckon it's
    worth it. I'll not have cables failing because I saved a few pence by
    buying substandard cable :-)

    Right, add that name to the rich b?st?rd list for first against the wall
    come the revolution. Signed, Chairman, Workers for Affordable Cable
    (galvanized section).

    ;-)

    --
    Brian G
    www.wetwo.co.uk

  20. "Brian G" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Clive George said:

    Visual inspection is sufficient - IME you can see if a cable is ok.

    Ah. They could saved a few man hours at the Forth Bridge, then.

    Yeah - if it was made of 1.6mm cable rather than ones several orders of
    magnitude larger. It's not exactly hard to inspect a brake cable...

    Quoted message said:
    Quoted message said:
    Quoted message said:

    > Do you use SS cables?

    No, zinc I think.

    Ah. SS are quite a lot better IMO because they don't suffer from rotting
    away in the way galvanised ones do. More expensive, but I reckon it's
    worth it. I'll not have cables failing because I saved a few pence by
    buying substandard cable :-)

    Right, add that name to the rich b?st?rd list for first against the wall
    come the revolution. Signed, Chairman, Workers for Affordable Cable
    (galvanized section).

    Hey, I'm not the one who said they were happy replacing their cables whether
    they needed it or not, and bugger the cost...

    clive

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