HELP! Sub1.9kg tt59cm mid90s steel MTB frame ID? Originally from GER!

[P_451]

Hi,

If anyone knows what this frame is and could help me identify it, I would be most grateful.

Photos: https://www.flickr.com/photos/141789982@N08/?

Distinctive (or not) details of the frame:

(1) Seat tube top - is concave, curved in.
(2) Rear brake cable routing - brazed-on noodle on the seat tube.
(3) Seat post binder bolt - is behind the seat tube.
(4) Top mounted cable routing - the shifter cables and the rear brake cable are routed along the top of the top tube.
(5) Head tube - the reinforcement rings.
(6) Rear derailleur cable braze guides - are under the seat stay.
(7) Ritchey rear dropouts - incl flat (vs round) seat stay and chain stay ends & eyelets.

Measurements:
- Weight (approx.): 1.886 kg
- Steerer: 1 1/8 inch
- Seatpost (approx.): 26.6 mm
- BB (British): 68 mm
- Dropout spacing: 135 mm
- Top Tube (approx.): 590 mm (c-c); 615 mm (effective); 28.6 mm (diameter out)
- Seat Tube (approx.): 435 mm (c-t); 390 mm (c-c); 28.6 mm (diameter out)
- Head Tube (approx.): 110 mm; 36.5 mm (diameter out)
- Down Tube (approx.): 32 mm (diameter out)
- Chainstay (approx.): 420 mm
- Reach (approx.): 460 mm

Serial Number: B99XXXX (B plus 6 digits)

Other (Ir)Relevancies:
- Came equipped with a threaded 1 1/8 inch triple butted (TB) rigid Kona Project 2 (P2) fork.
- Originally from Germany.
- Preliminary discussion: http://www.retrobike.co.uk/forum/viewtopic.php?f=1&t=377616.

Close matches so far:
- Many Scott mid-90s models.
- Biria MX 700, but round seat stay and chain stay ends and 27.2 mm seatpost.

All input appreciated, any ideas or suggestions are most welcome.

Thanks

 

[miles2014]

Hi,
Could bei a Willier Triestina, i've had a very similiar frame some time ago. Pleased measure the Seat Post Diameter, it wont bei 26,6.
Kevin

 

[P_451]

Hi,
Could bei a Willier Triestina, i've had a very similiar frame some time ago. Pleased measure the Seat Post Diameter, it wont bei 26,6.
Kevin

Thanks Kevin,

The 26.6 mm seatpost sounds like too thin for a large-ish under 1.9 kg frame as this is, it should be 27.2 mm. However, the frame came with a 26.6 mm Ritchey seatpost, it's not super-tight at the very top of the seat tube (you can play with the binder bolt alot), but when I push it deeper to the tube, it feels pretty perfect. The very top of the seat tube could easily take 26.8, but 27.2... Early 90s Explosifs have 26.6, and so do many Scotts of the same era, so it's possible. But I'm with you, Kevin, and I will definitely keep that seatpost issue on my radar.

- Pasi