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Viewing 40 posts - 2,401 through 2,440 (of 3,291 total)
  • Help Roger Vieira make Derby your next MTB destination
  • Macavity
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    Star What?

    Macavity
    Free Member

    "Oh, and the 853 decal is from ebay "
    for more than the originals from Reynolds:

    http://reynoldstechnology.biz/assets/pdf/rtl_replacement_decals.pdf

    Macavity
    Free Member

    "How long does it take for a Rock Lobster 853 frame take?"
    if you wait long enough you might get the new Reynolds 931.

    Macavity
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    Macavity
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    Mercian Cycles?

    Macavity
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    Fartlek

    Macavity
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    http://www.visitscotland.com/
    the Scottish tourist board website

    Macavity
    Free Member

    29er ?
    Is this a question about 700c tyres? sometimes known as 28" or 622mm etrto.

    Page 6 of the 'technical information' on here (might help)
    http://www.schwalbe.co.uk/shop.sfxp

    Macavity
    Free Member

    Fartlek

    Macavity
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    Macavity
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    You may have explained why people buy aftermarket polyurethane seals like Enduro.

    Macavity
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    The OP might have a point about the newer 6 speed gear boxes. But the engine is unlikely to be at fault.

    Macavity
    Free Member

    Does anyone know when "It's a no brainer"
    changed from meaning what a remarkably stupid idea
    to lets not think about it and just go with the flow.
    Or does anyone know what "It's a no brainer" mean?

    Macavity
    Free Member

    What type of plastic coating is it? polyesther etc
    As the term (powder coat) imlies the plastic goes on as a powder then is heated to cure the plastic coating.

    http://www.powdercoatingonline.com/html/powdercharacteristics.html

    Anodizing only really works well on new (scratch free surfaces) parts.
    http://www.hard-anodising.co.uk/the-anodising-process.asp

    "As all anodised coatings are derived from oxidation of the metal surface, the alloy composition and heat treatment condition have a large effect upon the resultant coating. The anodic film has excellent adhesion to the substrate, as it is an integral part of the structure, in contrast to, say, a painted or electroplated component. Anodised coatings provide an enhancement in properties over the base material particularly in respect to wear, corrosion, temperature resistance and electrical insulation. Generally speaking, the surface finish of the original work piece is reproduced, with slight roughening; there is no effect. Any defects such as corrosion or polishing 'burns' will be emphasised rather than hidden."

    Macavity
    Free Member

    Its when people do excesive frame realignment that frames end up with some internal stresses, that might end up as cracks.
    http://www.youtube.com/watch?v=zsorqEddlMA

    http://www.yellowjersey.org/zito.html

    Macavity
    Free Member

    In short :Stuff breaks.

    Look at the concluding remarks on brazing in:
    http://desperadocycles.com/The_Lowdown_On_Tubing/The_Metalurgy_Of_Brazing_Part_4.pdf

    "But the fact is that frames do fail, even
    ones constructed by the so-called "masters."
    I've spent a great deal of time trying
    to get failed frames from American builders
    to analyze, and have been successful only
    twice. Builders are very reluctant to give
    frames to me because they fear I'll publish
    their names with my results – which would be
    bad for business. Because these frames
    could teach us a lot, and because naming
    names serves no purpose – what happens to
    one framebuilder happens to many – the
    photos shown in this series don't reveal the
    framebuilder or manufacturer. No matter
    how skilled the framebuilder is, some very
    small percentage of frames will fail for one
    reason or another. This shouldn't result in a
    negative opinion of a competent framebuilder."

    Brazing can be done with an oxyacetylene torch, oxypropane of even propane/air torches: oxyacetylene has a very high temperature flame but low heat, propane has lower temperature but greater heat output.
    Reynolds 853 like 531 and T45 and Cro-moly can all be joined by welding or brazing with an oxyacetylene torch.
    There is some usefull info in Tony Foale's book Motorcycle Chassis Design.
    http://books.google.co.uk/books?id=84hF-qoR5I8C&pg=SA16-PA1&lpg=SA16-PA1&dq=tony+foale+motorbike+weld+book&source=bl&ots=FYD1uNOeRm&sig=VMy2OC81ByzJujsRIFdEW_cbG90&hl=en&ei=ZR6CTMauFsmk4Qb9mO3RCw&sa=X&oi=book_result&ct=result&resnum=2&ved=0CBMQ6AEwAQ#v=onepage&q&f=false

    But bronze welding involves neither bronze nor welding, and some of his other comments about oxyactelene welding are surprising.

    For info on welding thin-wall low-alloy steels these people have plenty of experience: http://www.tinmantech.com/

    Macavity
    Free Member

    The Southern Reporter newspaper

    Macavity
    Free Member

    There is some climbing in Miracle in the Andes by Nando Parado. An incredible story written by the man that decided to climb, instead of starve to death.

    Macavity
    Free Member

    You might need to fumigate the place where the food was stored.

    Macavity
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    Arthur Metcalfe?

    Macavity
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    Ask Corus:
    Enquiries
    T +44 (0) 1724 404040

    semi.finished@ corusgroup.com

    Macavity
    Free Member

    Arbroath: home of 45 Commando, birthplace of David Buick (founder of Buick cars), birthplace of James Lindsay (inventor of the lightbulb).

    Macavity
    Free Member

    A job that might suit some one:
    Development Manager
    7Stanes Mountain Biking Community Interest Company Ltd
    alison.ney@scotent.co.uk
    01387 245236

    Macavity
    Free Member

    Dynamite. Or might not work.

    Loctite Freeze and Release
    http://loctitefreezeandrelease.com/
    Wurth rost off.

    Liquid nitrogen to freeze (shrink) the seatpost then put in a vice and twist.

    Macavity
    Free Member

    Powdercoat can be any of a variety of different plastic-powders.
    Once an item has been powder-coated it can be difficult to remove the coating (if you change your mind about colour etc), alloy car wheels for example are treated in tanks of chemicals to soften the plastic during refubishment for repainting. Few bike frames would survive being chemically treated.
    Steel needs to be free of rust before powder coating to be durable/ blister free.
    Some aluminium alloys, used for bike frames, are artificially aged (heat treated) to T6 condition (eg 6000 alloys) this is done at temperatures ranging from 120 to 190 degrees C (approx). The temperature that some plastic powder coat is cured at is approx 180 degrees C, this can cause heat treated alloy to be over aged (over cooked) to T7 condition possibly with adverse effects on strength.

    New frames in 6000 series alloy, if to be powder-coated can be aged (heat treated) and plastic / powder-coat cured in one go.
    http://www.keytometals.com/Article39.htm

    Macavity
    Free Member

    Possibly as good a time as any to sell gold, before the bubble bursts (or goes off the boil).

    Macavity
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    Macavity
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    Highpath

    Macavity
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    Some people find out the reason that a turbo fails, fix that problem then fit a new turbo. Some people just fit a new turbo…..

    This is not directly relavant to the Primera but
    http://www.honestjohn.co.uk/carbycar/nissan/x-trail-2001/?section=bad
    "The following applies to Renault 1.5DCI engines, but may explain why the diesel turbochargers fail: The EGR valve should open to allow carbon dioxide (which acts as a cooling gas) into the combustion chambers when the engine is under load (>30% boost). This allows the combustion chamber temperature to drop and thus the temperature of the exhaust gases. If it sticks in the closed position the exhaust gas temperature will rise causing a) the turbo bearings to fail and b) engine oil into the induction system. This can cause the engine to run on its crankcase oil until it is either stalled or goes bang. Problems with EGR valves are often the cause of rough running when the valve is stuck in the open position as well. In several cases turbos have blown but the EGR valve has not been replaced. Inevitably the new turbo unit will not last long. "

    Macavity
    Free Member

    "You could buy a car tyre for that! "
    would that not be a bit heavy?

    Macavity
    Free Member

    "would that be a issue with only 54k on the clock ?"
    Yes, possibly, maybe, just a suggestion. But just as likely as a blown turbo though. Loss of power is the clue that it could be the EGR, and its easier to get to and check than the turbo so check it first.
    The rattling , well its a Nissan so not a major clue.

    Macavity
    Free Member

    "i lost all power"

    could be the EGR valve is needing replaced. The Exhaust Gas Recirculating valve can get blocked up with so much soot that it will not work.

    Macavity
    Free Member

    There were issues with the timimg chain on the 2.2 engine, a possible recall. Even timing chains can snap.

    Macavity
    Free Member

    TurboTechnics are worth a call , they might not want to comment directly on the situation but, they are the experts on turbos.
    If the original turbo failed with bits of the vanes breaking off, and then if these are not all removed / cleaned out then they can damage the replacement turbo.

    http://www.turbotechnics.com/turbo/faq.htm

    Macavity
    Free Member

    The aging (heat-treatment) for 6000 series alloy is done at approx 180 to 200 degrees celcius. The curing of some powder (plastic) coating is done at approx 180 to 200 degrees celcius.
    Therefore the alloy will be overaged (heat-treated just beyond its best)once it is powder coated.

    Macavity
    Free Member

    Some of the stuff on Youtube gives you a feel for Innerleithen.

    Macavity
    Free Member

    cork

    Macavity
    Free Member

    Were you wearing the shoes at the time?

    Macavity
    Free Member

    You could install the LPG system yourself if you have a reasonable amount of mechanical ability. That way you can save some money and know how the system works so you can servive it when needed. Plus you will know that it is fitted OK.
    The certificate that you get from the LPG fitters is nice to have but insurance companies rarely if ever ask to see it.
    These people can advise:www.tinleytech.co.uk/

Viewing 40 posts - 2,401 through 2,440 (of 3,291 total)