Fiets Magazine nr. 10-2024, inclusief een speciale bijlage over indoorfietsen, ligt nu in de winkel. Bestel 'm zonder verzendkosten in onze shop!
sloeren
27 mar 2014 13:03
Ze worden (werden) wel gemaakt:wielertje schreef:ik wens je succes, ik zoek er ook nog 1
ook voor mn peugeot, ik vind alleen kaarsen met een zadelstrop
Ernie C.
27 mar 2014 13:50
Wat ik uit deze tekst opmaak is dat het ook mogelijk moet zijn om een oudere 25.4mm zadelpen naar 24mm af te (laten) draaien.We began machining seat posts to 24.0mm for classic French 'Sport' bicycles about ten years ago. Many French makers built frames with a small-top seat tube. Such models include the Peugeot UO-8/ UO-18, Peugeot P6/P16, P8/P18 as well as Gitane Gran Sport, Motobécane Nomade, Nobly, Mirage, Peugeot VX40 and many others. Since we had sold truly thousands of this style bike ourselves, and, in America, a huge volume of nice classic bicycles remain in garages, we tried to do something about those short cheap steel seat posts out there. In the 1990s, we used 25.4mm ROC-Taiwan aluminum posts, which are readily available. We hired an American machine shop to turn them to the smaller French 24.0mm format
In recent years, with dramatic increases in both aluminum cost and delivery expense, seat post makers have changed to harder seamless aluminum material for post shafts. That change means thinner seat post shafts and, of course, lighter posts! Which is all fine so far as it goes. However, when we cut a smaller diameter from a modern post, we risk ending with a possibly unsafe thin piece.
So we searched for a manufacturer to make custom 24.0 posts for us. This turned out to be quite difficult.
Since we have some experience here, we recalculated how thin is 'too thin'. We set up a test fixture for seat post samples. Until early in 2009, no manufacturer had been able to deliver such a simple thing to our written specifications and within reasonable bounds of safety .
We're sympathetic to riders who have a too-short seat post on an otherwise nice bicycle. We pursued this new design diligently over nearly a year's time. The project came to a wonderful conclusion with a nice looking safe long modern seat post to fit classic French 24.0mm bicycles
NEWEST STYLE 2013 POST HERE NOW!
If you wrote us, we notified you .
sloeren schreef:Ze worden (werden) wel gemaakt:wielertje schreef:ik wens je succes, ik zoek er ook nog 1
ook voor mn peugeot, ik vind alleen kaarsen met een zadelstrop
http://www.yellowjersey.org/frogstem.html
Maar die prijs vind ik niet leuk.
Ik vraag me dus af wat de fabrikant van deze dingen is...
Voorlopig maar even met kaars en strop fietsen, ik wil gewoon weten hoe het ding fietst.
sloeren
28 mar 2014 07:20
Asjemenou, da's wel effe wat anders dan die zooi waar ze ons in de 70's via de Wehkamp mee probeerden op te zadelen
