Seat post size for Columbus PL tubing

[Nothin-fancy]

I'm trying to figure out what tubing one of my Zullo track bikes has. I'm pretty sure it's Columbus SP but does anyone know the seat tube diameter for the PL tubing? It might be the Pista Leggeri because that's a track bike specific tubing set. I can't find anything on Google, so maybe someone here knows???

 

[SteelNipple]

It's plain gauge tubing with 0.6mm wall thickness. So it should be 27.2mm, same as SL (0.6/0.9).


Source: https://www.equusbicycle.com/bike/columbus/columbusoldfullcat/index.html

 

[SteelNipple]

I'm trying to figure out what tubing one of my Zullo track bikes has. I'm pretty sure it's Columbus SP but does anyone know the seat tube diameter for the PL tubing? It might be the Pista Leggeri because that's a track bike specific tubing set. I can't find anything on Google, so maybe someone here knows???

Could also be Pista Spiccato if the seat tube ID is closer to 27.0mm and the weight is similar to SP.

 

[Nothin-fancy]

Thanks for your help. It's a 27.0 seatpost. I'm repainting the frame and want to put the correct-ish sticker on it. When I contacted Zullo about it all he could say was that it was made by him with Columbus tubing and it was made just before he started making the TVM squad's frames. I don't plan on selling the frame so I technically can put what I want to on it. But I'd like to be in the ballpark.

 

[SteelNipple]

Thanks for your help. It's a 27.0 seatpost. I'm repainting the frame and want to put the correct-ish sticker on it. When I contacted Zullo about it all he could say was that it was made by him with Columbus tubing and it was made just before he started making the TVM squad's frames. I don't plan on selling the frame so I technically can put what I want to on it. But I'd like to be in the ballpark.

Well if it's a track bike, has 27.0mm ID, has round fork blades and weights about 2200g-2300g then it should be Columbus PS.

What size frame it is?

 

[Nothin-fancy]

It's a 55ctc or 57ctt frame and it has oval-ish fork blades like a road bike. The fork is original to the bike and not drilled for brakes, but you can see where he filled the brake hole with braze. It is probably a typical Italian frame from that period and he just grabbed what was on the shelf while making it.