M-Gineering Tubes and Coffee II

Another year has passed, and here we are for the second time (first time here: https://starostneradost.wordpress.com/2013/12/22/test/) in Marten Gerritsen´s workshop for another dose of apple crumble, vegetable soup and bike talk.TAppleforkleg

Having driven up from Germany together with two friends and my son (who actually did the driving, and who is shortly to publish a video of Marten´s open day on youtube), I enjoyed the get-together greatly, talked a lot to the many participants, stroked the cat

TKatand had a good helping or two of Marten´s delicious apple crumble.

TfoodfullAs before, the atmosphere was friendly, and an always helpful Marten was confronted with a number of questions by his customers, or perhaps visitors. One had brought the sorry remains of a BSA parabike, which took the idea of the folding bike to new heights.


This looks quite a normal parabike b/b, painted over, true.


And a beautiful wing nut is securing the two halves of the frame. Here´s the rear dropout,

TBSAreardoand here´s the horror:TBSABreak

TBSAFolderMarten´s comment was that he would see what he could do. Brave man. Obviously some bad welding had damaged the braze joint decades ago.


Not easy to ride with the cranks at this weird angle, and the shark fin teeth are witnesses for the hard life the bike must have had.


But of course there were much nicer bikes to be marvelled at. The BSA was a cheapo even when new (one bystander remarked that it was never meant to last, but to be shot at). This one, Marten´s show bike to be taken to trade fairs, is a completely different matter. Just look at the first rate fillets and the constructeur-like parts such as the rear dropouts.

TsilverdtransfTsilverfull  Tsilverseatcl TsilverS+Scouplers TsilverRohlcomm TsilverRofltwgrip Tsilverreardodet Tsilverreardo Tsilverrack  Tsilverftdo Tsilverforkcr TsilverFillet TsilverextTsilverVeloOsaddleThere was one frame, bilaminated for good measure, which had just been completed and could be contemplated before painting. This was a great opportunity to see what things in frame building should be like. If it were mine, I´d probably just have it clear coated with some durable, but transparent paint.

Tworksbarebb Tworksbareseatcl Tworksbarefillettophead TworksbarefilletlwrheadThen of course it was very nice to be able to delve into the secrets of a frame builder´s workshop, with all the small, but important bits and pieces spread before you.


Tworksforkcrns Tworksboxbits Tworksblockforkbl Tworksblock Tworksbits

M-Gineering are the Dutch importers for SON products, so we were able to regard some unusual demonstration objects.

TSONbunt TSONdemoint TSONdemoblau

By the time we had had a good look round the shop, some more specimens of Marten´s work had arrived outside.

TBluefull TBlueladreardo TBlueLadexc


Neither were other marques absent, just one example:

TSalsabucketfull TSalsaforktransf TSalsadttransfAnd what would Tubes and Coffee be without some choice veteran bikes, serving as eye candy as much as objects of comparison, expertly explained by Marten. Take this Graftek for example, with its carbon fibre tubes bonded into stainless lugs. Rare lightweight equipment completes the bike.


TGraftekbrake TGraftekseatl TGraftekrearder TGraftekpedal Tgraftekheadb TGraftekfrontend  TGraftekchainMarten isn´t forgetful about the Dutch cycle making history, either. Ko Zieleman was one of the more famous Dutch builders.


Tzielcrank TZielseatcl

The wrapover tips – accident or joke?

TZielReyn  TZielforkcrAnd this was what guided the way onto Marten´s yard:

TKopPedfull TKopPedheadbLastly, I just can´t resist to post a photo of the unusual village Marten lives in, and of the equally unusual vehicle one of the visitors arrived in.

TCanal TCXI just can´t wait for the next edition of Tubes and Coffee.



  1. Posted December 15, 2014 at 5:05 pm | Permalink | Reply

    Thanks for the great story and pictures. I’ve been reading Martin’s posts on CR for a long time and its nice to see more about him. It would be nice to see what the outside and inside of his shop looks like…Happy Trails and Holidays!

  2. Posted December 16, 2014 at 7:24 am | Permalink | Reply

    Hi Chris,
    glad you like my post, thanks.
    For a view or two of Marten´s shop, go to my post on last year´s Tubes and Coffee. There is a link right in the first line of this year´s. Also my son´s video on YouTube is embedded and can be viewed from the post.
    Happy Holidays.

  3. DONAL
    Posted December 16, 2014 at 9:41 am | Permalink | Reply


    • Posted December 17, 2014 at 7:20 am | Permalink | Reply

      Frankly, so could I. Let´s ask Marten for a monthly Tubes and Coffee 🙂

  4. DONAL
    Posted December 17, 2014 at 10:03 am | Permalink | Reply


  5. Herman
    Posted December 17, 2014 at 7:53 pm | Permalink | Reply

    Unfortunetely I couldn’t make it this year. Happy to see it probably will be a yearly event. Marten Gerritsen is Always willing to give a good advice, even when you totally made a mess of things. I would like you to know that I am still a regular visitor of your posts and lke the enthousiasme in which you describe your events or bikes. Greetings from Sint Annaparochie en best wishes for next year. Herman

    • Posted December 18, 2014 at 6:40 am | Permalink | Reply

      Thank you, Herman – glad you like the post, and indeed my blog. Getting positive feedback makes the blog worthwhile.

  6. Posted January 9, 2015 at 5:32 pm | Permalink | Reply

    Great to see what I missed. Luckily I just have to walk into my shed whenever I want to admire Martins work.


  7. Bo
    Posted January 3, 2016 at 1:26 pm | Permalink | Reply

    Thanks for the great report. The bilaminated frame looks very nice! Clear Coated would definitely be an option.

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