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Bent bent :-(

Started by Guy Chapman · · Last activity · 17 posts · 1,078 views

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UK and Europe
Published
19 July 2003
Last activity
26 July 2003
Original author
Guy Chapman
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17
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  1. No cyclists were harmed during the making of this incident.

    Riding from Henley to St Albans as I occasionally do, this time I decided to take the Stinger. All
    went well until Rickmansworth, when the boom started to feel distinctly strange - and five yards
    later the pedals headed for the road. The main part of the boom has fractured just in front of the
    headset, a classic fatigue fracture at the weld. Needless to say I am not entirely delighted: I sort
    of expected that a bike costing in excess of a thousand quid might make it at least to the 12 month
    mark. The Stinger has done under 3,000 miles since it was delivered in September last, and has
    already spent a month off the road due to a failure of the rack. / seat mounting.

    I'll be taking it to Darth Ian tomorrow in my Mum's car because mine has an obscure fault in the
    electronics. Mum has a Yaris Verso, which is quite handy for bike transport. Oh, and the bottom
    bracket on my tourer went yesterday. Things seem to be going a bit pear shaped just now :-(

    The blow was softened somewhat by a delightful chap named Peter who lives right by the roundabout in
    Rickmansworth where things went wrong. He came to talk recumbents, being the owner of a PDQ, and
    ended up supplying me with a consolatory Stella Artois while we waited for the sag wagon. What a
    gent - and he rides his PDQ on the British Legion rides to Paris and Brussels.

    The frustrating thing is, it's a really great bike to ride. But I wonder whether I should trade
    it for a steel framed recumbent, or maybe a Trice, because it looks like it can't handle the
    riding I do.

    And now - beer.

    Guy

  2. In message <[email hidden]>, Guy Chapman
    <[email hidden]> writes

    Quoted message said:

    The main part of the boom has fractured just in front of the headset, a classic fatigue fracture
    at the weld.


    Snip

    Quoted message said:

    Oh, and the bottom bracket on my tourer went yesterday. Things seem to be going a bit pear shaped
    just now :-(


    I'd blame BT........ .

    Quoted message said:

    The blow was softened somewhat by a delightful chap named Peter

    These little things can help ease the frustration. But yes I can imagine you're a bit peed off.

    --
    Chris French, Leeds

  3. People in Ricky are ok....that's just a few miles from where I live
    :-)

    Sorry to here of your 'malfunction'.

    But to be honest, I doesn't kind of surprise me. Never ridden a bent, although I'm in the process of
    building one at the moment, and they seem to have (by their very nature) 'weak spots' - although
    this would depend so much on how they're made of course. One such weak spot in the SWB would appear
    to be the headset/boom connection. Still....you, know all this :-(

    You mention whether you should get a "steel framed recumbent" ? Excuse the naivety, but the Stinger
    is aluminum, right? So much stress on that headset/bottom bracket area.

    Meanwhile, we have the mountain stages, and the golf to enjoy :-) You'll be up and running again,
    sooner or later.

    Garry

    Quoted message said:

    No cyclists were harmed during the making of this incident.

    Riding from Henley to St Albans as I occasionally do, this time I decided to take the Stinger. All
    went well until Rickmansworth, when the boom started to feel distinctly strange - and five yards
    later the pedals headed for the road. The main part of the boom has fractured just in front of the
    headset, a classic fatigue fracture at the weld. Needless to say I am not entirely delighted: I
    sort of expected that a bike costing in excess of a thousand quid might make it at least to the 12
    month mark. The Stinger has done under 3,000 miles since it was delivered in September last, and
    has already spent a month off the road due to a failure of the rack. / seat mounting.

    I'll be taking it to Darth Ian tomorrow in my Mum's car because mine has an obscure fault in the
    electronics. Mum has a Yaris Verso, which is quite handy for bike transport. Oh, and the bottom
    bracket on my tourer went yesterday. Things seem to be going a bit pear shaped just now :-(

    The blow was softened somewhat by a delightful chap named Peter who lives right by the roundabout
    in Rickmansworth where things went wrong. He came to talk recumbents, being the owner of a PDQ, and
    ended up supplying me with a consolatory Stella Artois while we waited for the sag wagon. What a
    gent - and he rides his PDQ on the British Legion rides to Paris and Brussels.

    The frustrating thing is, it's a really great bike to ride. But I wonder whether I should trade
    it for a steel framed recumbent, or maybe a Trice, because it looks like it can't handle the
    riding I do.

    And now - beer.

    Guy

  4. "Guy Chapman" <[email hidden]> wrote in message
    "]news:[email hidden]...

    <snip>

    Quoted message said:

    And now - beer.

    Guy

    And tomorrow - wish you'd spoken to the bike builder before flaming him to the entire biking
    community?!

    kciN 😉

  5. "Guy Chapman" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    Mum has a Yaris Verso, which is quite handy for bike transport.

    International Rescues MDG 2 is called into action ;-)

    Pete

  6. Guy Chapman must be edykated coz e writed:

    Quoted message said:


    The frustrating thing is, it's a really great bike to ride. But I wonder whether I should trade
    it for a steel framed recumbent, or maybe a Trice, because it looks like it can't handle the
    riding I do.

    And now - beer.

    Guy

    Guy,

    If you are thinking of going for a trike the Catrike speed will be available in the U.K. shortly at
    a price of about £1900.00 with headrest and 12 month warranty.

    Ian

  7. (just coming back to this again)

    Quoted message said:
    Quoted message said:

    The Stinger has done under 3,000 miles since it was delivered in September last, and has already
    spent a month off the road due to a failure of the rack. / seat mounting.

    But this is f*** all though is it? You could very easily pick up an old 10-speed from the dump (as I
    frequently do!) and put another 3,000 miles on it no problem at all.

    Making no point, as such, just saying.

    I like some of the old stuff.

    Hope you can get it sorted.

    Garry

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

    Quoted message said:


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

    <snip>

    Quoted message said:

    And now - beer.

    Guy

    And tomorrow - wish you'd spoken to the bike builder before flaming him to the entire biking
    community?!

    I think that came out wrong ... sorry to hear about your bike. I'm sure the bike should have done
    more than that .. you have some sort of warranty with it? Enjoy the beer ...

  9. in article [email hidden], Garry Broad at [email hidden] wrote
    on 19/7/2003 12:20 am:

    Quoted message said:

    People in Ricky are ok....that's just a few miles from where I live
    :-)

    I learned to sail at Rickmansworth Aquadrome :-)

    Quoted message said:

    But to be honest, I doesn't kind of surprise me.

    Surprises me all right :-/

    Quoted message said:

    You mention whether you should get a "steel framed recumbent" ? Excuse the naivety, but the
    Stinger is aluminum, right? So much stress on that headset/bottom bracket area.

    It has a very large diameter thick-walled frame tube - it should by all appearances be well over
    spec for the job. I do have pretty powerful legs, but it really should be able to stand that.

    Guy

  10. Guy Chapman said:

    The frustrating thing is, it's a really great bike to ride. But I wonder whether I should trade
    it for a steel framed recumbent, or maybe a Trice, because it looks like it can't handle the
    riding I do.

    Sorry to hear about this :-(

    Rob had a similar incident many moons ago with a Peter Ross Trice when trying to pull away from a
    junction. The new ICE ones are more robust though.

    --
    Carol Hague "Follow that chariot!" - Meg, Xena, Warrior Princess

  11. Guy Chapman said:

    No cyclists were harmed during the making of this incident.

    Quoted message said:

    Riding from Henley to St Albans as I occasionally do, this time I decided to take the Stinger. All
    went well until Rickmansworth, when the boom started to feel distinctly strange - and five yards
    later the pedals headed for the road. The main part of the boom has fractured just in front of the
    headset, a classic fatigue fracture at the weld.

    When I was doing my research on building recumbents last summer I came across a lot of people whose
    early efforts had failed at just this sort place, especially with this sort of bent design (double
    meaning intended). There was some concensus that welding the head tube where the main part of the
    frame has been bent was a potential cause of the failure IIRC. This was with mild steel "muffler
    pipe", rather than aluminium, but similar effects may be present.

    Quoted message said:

    The frustrating thing is, it's a really great bike to ride. But I wonder whether I should trade
    it for a steel framed recumbent, or maybe a Trice, because it looks like it can't handle the
    riding I do.

    With luck it was just a design defect, which they will have now corrected. From what I said above,
    the material is not as important as the design when trying to make something like this robust, so
    just switching to a similar steel design will not necessarily be any better. What should happen is
    the heat treatment stage after the welding should strengthen the materials around the welds. If they
    are welding aluminium without heat treating it afterwards, then you would have a reason to change to
    a steel frame (sorry - I don't know if this is the case with the stinger).

    Quoted message said:

    And now - beer.

    Cheers.

    --
    Jim Price

    jimprice.dsl.pipex.comjimprice.dsl.pipex.com

    Conscientious objection is hard work in an economic war.

  12. Jim Price said:

    With luck it was just a design defect, which they will have now corrected.

    As subsequently posted, it was and they have.

    Guy

  13. Ouch encore.

    FWIW I've heard of a Several of Optima frame failures in this region - all on Barons IIRC - and
    Optima have in all cases replaced the frame with all despatch. Fortunately, Cosimo doesn't get
    ridden far enough for this to be a major worry for me.

    Dave Larrington - legslarry.beerdrinkers.co.uklegslarry.beerdrinkers.co.uk
    ===========================================================
    Editor - British Human Power Club Newsletter
    bhpc.org.ukbhpc.org.uk
    ===========================================================

  14. Quoted post said:

    Several of Optima frame failures in this region - all on Barons IIRC - and
    Optima have in all cases replaced the frame with all despatch.

    Doesn't this suggest the manufacturers are aware of a fault.
    Why no product recall?

  15. "Dave Larrington" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    FWIW I've heard of a Several of Optima frame failures in this region - all on Barons IIRC - and
    Optima have in all cases replaced the frame with all despatch. Fortunately, Cosimo doesn't get
    ridden far enough for this to


    be

    Quoted message said:

    a major worry for me.

    Your name was taken in vain in conversation with Darth Ian - he couldn't remember if Cosimo had the
    New Improved! frame or not. The Baron in the shop undoubtedly does.

    Baron. Mmmmm, nice. Where's my cheque book?

    --
    Guy
    ===

    WARNING: may contain traces of irony. Contents may settle after posting.
    chapmancentral.comchapmancentral.com

  16. Dave Larrington said:

    Ouch encore.

    FWIW I've heard of a Several of Optima frame failures in this region - all on Barons IIRC - and
    Optima have in all cases replaced the frame with all despatch. Fortunately, Cosimo doesn't get
    ridden far enough for this to be a major worry for me.

    Do you know if it's a problem with frames that have bends in the tubing -
    i.e. would those old-fangled ones with a straight boom be less susceptible?

    Kit

  17. Kit Wolf said:

    Do you know if it's a problem with frames that have bends in the tubing -
    i.e. would those old-fangled ones with a straight boom be less susceptible?

    It also affected early Pashley PDQs and Peter Ross Trices so I suspect that it is inherent in any
    SWB design and needs to be engineered out.

    Guy
    ===
    ** WARNING ** This posting may contain traces of irony. chapmancentral.comchapmancentral.com [currently
    offline awaiting ADSL transfer to new ISP]

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