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Trattner AX frame - 80s, 4lb 1 oz

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Trattner AX frame - 80s, 4lb 1 oz

Old 05-27-24, 02:37 AM
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Trattner AX frame - 80s, 4lb 1 oz

This recent arrival was buit by George Trattner, who at the time lived in Nova Scotia and built frames in his spare time.
I had a recent email from George about it and will share the pertinent details -

It was one of 68 frames he built, all were sized to the rider.
This particular one was one of a run of six intended for the then-new Shimano AX components.

The rear brake cable runs through the seatpost; George said as he knew the size of the rider he just milled a slot in a post that allowed a little adjustment.
The shifter cables run inside the downtube; the front one has a little guide brazed across the seat-tube opening in the bb shell, and exits from a hole between the stays.
The rear runs through the chainstay and exits at an angle and location suitable for the rear mech cable guide-plate (those mechs use no cable outer).
Dropouts are "semi horizontal" - Shimano EF-UF20.
The shifter mount is obviously bespoke, but an extra detail is that the two threaded studs have their flats oriented differently; George said "differential lever positions were optimized (Shimano engineering) to minimize the drag".

Measurements are (c-c) 48cm seat, 54cm top, 40cm chainstay.

There is a single - just one - ornament: the point at the front of the seat lug.
It strikes me as the thorn of this tiny rose - a reminder to be careful when handling.

Looking at these pics I see quite a bit of camera distortion - the seat tube is NOT curved forward, the slot at the top IS straight and centred, the headset faces ARE parallel, etc.

Last edited by oneclick; 05-27-24 at 02:40 AM.
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