Orange Prestige tube sizing

[RobbieA]

Afternoon, I have a '93 Orange Prestige and having looked at the reference https://www.retrobike.co.uk/wiki/Orange I can see no details for the seat tube internal or external diameter - can anyone help, please? I had assumed a 26.8 internal, but I don't know why. No, I don't have a vernier caliper! Cheers, Rob

 

[jimo746]

I can check my 93 Prestige seat post size if no one else replies. But tbh you might be better off buying some cheap vernier calipers just to be sure, Orange were well known for changing tubesets depending on what was available I think!
My Prestige is Tange Ultimate Superlight tubing, are you 100% sure yours is a '93? What tubing is it?

 

[RobbieA]

I must apologise - @duncanwoodhall included a seatpost, which quite clearly says 27.0 on it so I guess I know the internal diameter!

As for year, I'm going on what I was told - I can't quite make out the serial number. This is the frame - it seems to have a fluted seat tube:

 

[Tootyred]

Ive got tange prestige frames with 26.8, 27.0, 27.2 and 30.3 (oversize)......so they can be different depending on spec the company asked for.

My 91 orange prestige is 26.8mm

 

[RobbieA]

Ive got tange prestige frames with 26.8, 27.0, 27.2 and 30.3 (oversize)......so they can be different depending on spec the company asked for.

My 91 orange prestige is 26.8mm

Looks like I'll be buying a vernier gauge then

 

[brocklanders023]

Most of the Prestige and Clockwork’s were 26.8mm

 

[RobbieA]

Seems a bit of a lottery