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jdmitch

Member since Jun 2014 • Last active Feb 2017

Most recent activity

  • in Current Projects
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    The filling in on the gussets is a bit slow going, but this is after 2 or three layers (can't put it in too thick or it will not dry properly and crack, so I have been building it up and sanding it smooth after each layer).

    This is the toptube - downtube - headtube intersection:

    I think that will be good for primer after one more layer of bondo probably. You'll notice some aluminium peeking through around the cable routing inlet on the DT - I ground this down quite a bit, but I didn't want to push it too much as the walls of the actual tubing here are incredibly thin, and I also am not sure if it the chunk of aluminium would have been welded on top of the tubing or into a hole in the tubing... In any case, a slight bulge in this area smoothed out with the filler won't make a difference, especially as it merges into the aero profiling from the head tube.

    The downtube-seattube intersection will likely need a few more layers of filler:

    this one is a bit messy around the area where the front derailleur hanger was (on the ST), and there is quite a bit of smoothing to do between the DT, ST, BB shell and chainstays. Also the gusset comes right up to the tapped hole for the bottle holder, so I am not sure whether to bring the gusset down a bit so it ends smoothly before that, or just go right over it. Since this is meant to be a tarck bike, and not HHSTTB, bottle cage is kind of out of place anyways #amiright?

  • in Current Projects
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    Not amazingly if I am honest. In some larger surface areas it really did blister off the paint quite well so it came off with ease, but I think part of the difficulty was down to the colour changing paint. I have heard this tends to be thicker or something. In the end I had to rely rather heavily on the wire cup attachment to "brush off" the rest of the paint. This actually resulted in more abrasion on the aluminium than I had hoped for, but I should have probably foreseen this.
    If I were doing it again I would probably try to find something to thicken the dichloromethane so it is like a gel (like nitro or something). Alternatively, for a few frames at once, creating a shallow bath dip and just giving them a soaking one after another could be a good approach (anyone want to organise a frame-stripping party? I still have about 4L left!).
    Also note that gloves are ABSOLUTELY NECESSARY. I got some of this on my skin (through two pairs of latex gloves), and it was very irritated!

  • in Current Projects
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    btw @malandro the sourdough is going well:

    and I did get a banneton (as you can see in this loaf):

    Doesn't seem to be as half-baked as the bike! ;)

  • in Current Projects
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    Well, when we last left this project, I was at the stage of stripping the paint in order to sand down the welds and attach the gussets into a lean mean aero machine. Luckily I love the smell of nitromors in the morning:


    however by the end of the day, I wasn't getting anywhere so I decided to buy the real deal: 5 litres of 99% pure dichloromethane. When it arrived, I realised:

    1. this chemical is incredibly toxic and can't be done anywhere near my baby girl (only a few months old at the time)
    2. it is way too thin (liquidy) and evaporates too quickly to actually stay on a surface of the bike long enough to react with the paint so it can be stripped off.

    So my solution was to cover the bike in rags soaked in the dichloromethane, and then wrap that in cling-film to keep the chemical on the surface of the paint as long as possible:

    finally after a while, I got most of it off, with the help of a wire brush:

    Then the fun really began of removing the braze-ons and smoothing out the welds. @TM let me borrow his hacksaw:

    the laborious process of sanding the welds down was just too boring, and things got bogged down, and I kind of gave up / decided I was done enough to cover everything else with bondo. So I finished cutting the gussets today:


    If you remember the poll from a few pages back on the different gusset options, the collective wisdom pointed me towards one on the ST-DT junction, and one on the TT-DT junction. A further filler area between the seat stays, seat tube, and brake bridge has some insulation foam inserted here. The final step before it got too dark was fixing these in place with Sugru so that I can start filling in with bondo tomorrow:

    I also did a bit of filling in on the dropouts with aluminium bar, but its still far from pretty, so I will withhold pictures of it until it is slightly more presentable. The dropouts/struts, and the foam insulation gusset will be fixed in place properly with this really, really ridiculously good looking product:

    Then a bit more aero-ing with bondo, and bob's your uncle: we're ready for the paint!

  • in Current Projects
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    That turbulent air is full of bad hombres.

  • in Current Projects
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    We are building gussets and we are building them so fast...they are going to be so big. And YOU are going to pay for them!

  • in Current Projects
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    We are doing this, and we are doing it BIGLY.

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    The FAKE NEWS lfgss (failing @TM @Thrasher @pdlouche) Is not my enemy, it is the enemy of the people!

  • in Miscellaneous and Meaningless
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    Finally got round to developing a sourdough starter, but have realised I need to do something to get a better rise into the bake. I think I need a proofing basket or banneton...any recommendations?

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