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Oli-from-DK

Member since May 2020 • Last active May 2020
  • 1 conversations
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    I’ve actually used that thread for both inspiration and knowledge (so it’s kinda sad the first Principia turned out so ugly, so many nice Principias in that thread and on this forum in general…) . I’ve still got the frame, but it seems quite hard source a 1 1/8” 650c fork (I can see that Wiggle sells a 3t funda 650c fork). I’ve never tried a 650c bike before, so I really don’t know what to expect when/if I build it.
    But your post kind made me want to build the bike. There is a pretty good deal locally for som HED alu/carbon clinchers 650c, then I just have to source a fork….

  • in Current Projects
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    Fitted some tan-wall tires – I’m pretty pleased with the result. Think its going to look pretty good with the Thomson cockpit.

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    To help me overcome my disappointment over the now scrapped Principia project, I’ve picked up my old Orbea track-frame. Gonna put on a new cockpit (Thomson Elite), new tires and remove some links from the chain.

    Might need a new headset due to the fact I lost the compression ring, and rode without one for a while (stupid)..

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    Headset installed, fork (except the cone – have to wait for another day, so that I do not disturb the neighbours).

    However I’ve made a major f-up.. When fitting the wheel I realised that the frame is for 650c wheels..

    The seller mentioned that he used to be a mechanic for TT-rider, and that he was gifted the frame by that rider. However (even though I had heard of 650c being popular with TT bikes back in the day) I never considered to measure the black frame, due to the fact that the blue is 700c.
    However when you look at the two frames side by side, the difference in the placement of the brake-bridge is clear.

    Life goes on, i can either: 1) sell the frame or 2) source a 650c 1 1/8 fork and wheels – I can use the new fork for blue Rex.

    Some part of me still want to build the frame and have a part of old school bike “tech”.

  • in Current Projects
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    Found a shop in Denmark that could deliver a Principia fork overnight (NOS made by Mizuno). It’s not that light (only a couple of centimeters needs to be removed from the steerer), but it was cheap.

    I’m considering removing the clearcoat to match the matt look of the frame. Still waiting for the Thomson stem and some few small pieces before I can install the headset/fork.

  • in Current Projects
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    Update on the black Principia REX. Head tube reducer received and installed – seems pretty neat, doesn’t really add a lot of stack height (this bike will be slammed).
    Next step is to source an original Principia 1 1/8 fork and an EC34 headset to go with it. This might take a week or two. I have also ordered a Thomson Elite stem – as I apparently have sold the one I thought I had.

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    Cool - it would certainly be the most optimal solution to source an EC37 headset. I’ve been searching the internet but they seem to be hard to get by. Due to the fact that the blue rex uses a 1” fork I just bought an EC30 (this was before removing the cups).

    I've reached out to Principia and they said that all Principia-retailers could source bearings for the proprietary Principia cups. So this might also be a solution.

    This might also be a possibility:
    https://www.ebay.co.uk/itm/1-1-4-to-1-1-­8-Cannondale-Headset-Reducer-Tube-Adapte­r-1-25-1-125-EC37-inset/362044195485?has­h=item544b84029d:g:Ds4AAOSwVuFbWYkR

    Fingers crossed that the head tube reducer works properly, it would certainly make it easier to source replacement bearings etc. in the future.

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    Arh cool, seems I’m safe then. I really don’t want to use the brake as I want to keep the braking surface black. Anyways, I always use clip-less pedals and really don’t use the bike for driving in the city due to the toe overlap. I’ve got a citybike with SRAM Automatix that I normally use for my (short) commute.

    To my best knowledge it is anodized. Sadly a bit scuffed as the frame has been sitting in a shed at the former owners house (whom apparently was a bike mechanic at the Olympics in Sydney for a Danish triathlete). I’ve only paid the 300 quid for both Principia's, so still think it was a pretty good deal.

    Just took the blue rex for 2-hour spin (including 30 mins in a hailstorm). The bike weights 9,6 kg as pictured (without bottles). The wheelset including tires does contribute with 3kg alone. So with some proper parts the black rex might be under 8kgs.

    I’ve ordered a headtube reducer today, hopefully this allows me to use a normal EC34 headset and a 1 1/8” fork.

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    Thanks for the information, didn’t know that will check the rimes regularly after (brake)use. The front brake is only used for emergencies and to keep the police happy. So I have only used brake once when dialling in the cable tension.

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