help please please,,what brand and model

[shamgar dean]

Not a Supra, wich has aluminium tubes, not carbon. The seat area was similar, but the BH Supra Litage Sakae 1991 has internal routing and the frame is more elaborated. Near 20 years to popularize the internal routing ... why ... why

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ohh no,, my frame is not a Litage,,,

 

[joglo]

just noticed your research thread with regards to the proper seat post diameter.

Do you meanwhile know that it's an Katarga Frame?
This seems to be correct, not sure if you have seen this one?
https://www.mtb-news.de/forum/t/made-in-austria.913816/page-4#post-17840540
This Miles (to me, another Austrian or maybe Czech brand) looks also identical
https://www.kleinanzeigen.de/s-anzeige/miles-carbon-mtb-deore-xt-737-20-/1976076811-217-15728
In addition, I still think it has been produced by same manufacturer as the Batavus Hunter Carbon model.
Just every brand had a bit of unique design.
There are other no-name brands as well like United or Mistral, where very similar carbon frames with aluminum lugs have been sold.

 

[shamgar dean]

my frame is a Katarga,,do you have one or do you happen to know the seat post diameter? thank you

 

[joglo]

my frame is a Katarga,,do you have one or do you happen to know the seat post diameter? thank you

no, but I know someone owning one. I'll ask, just it may take a bit of time.

Personally, I wouldn't waste time on research, as there are so often deviations vs. theoretical size.
I've bought myself so-called seat-post sizing rods, they are great

professional ones
https://steintool.com/portfolio-items/seat-post-sizing-rods/or cheap ones
https://www.ebay.co.uk/itm/382462888351?or
https://www.amazon.com/BIKEHAND-Bike-Bicycle-Aluminum-Seatpost/dp/B088WHJWWQ