Cannondale Track tubes diameters

Posted on Mon 18th, August 2014

• #1

kusak

Hey,
I'm trying to find diameters of tubes in Cannondale Track 1993 frame. Also I am wondering if all of them are round or oval or so.
If anyone has one please let me know, I would be really grateful.

Cheers!!
• #2

countryboj

Hi K,

I've got a 93' 56cm one, the tubes are all round except for the chainstrays.

Here's the measurements:

You can also google up a vintage Cannondale catalog for some more info.

J
• #3

beret

I think what Kusak meant were not lengths but circumferences and diameters of tubes (profile dimensions)?
• #4

countryboj

Ah okay, you want to build a copy of the Dale?

Diameters are:
TT- 4cm
DT- 4,5cm
ST- 3cm

Circumferences are:
TT- 12cm
DT- 16cm
ST- 10cm

Sorry can't measure the HT as the weldings are in the way.
• #5

user120099

By my best estimation, Cannondale used:

Seat tube: 27.2mm ID/31.8mm OD

Top tube: 34.9 OD

Downtube: 50mm OD

Head tube would be same as seat tube to accommodate 1” fork steerer.

The downtube dimension is an estimate. I know it’s greater than 4.5cm (45mm) dia.
• #6

user120111

Usually the tubes are: 1 1/4" seat tube; 1 1/2" top tube and 2" bottom tube.

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