Ritchey state the diameters of their three WCS Mast Toppers as follows:-
30.25
34.9
38.35
Presumably, they are giving the diameter of the inner bore of the stubby. But what outside diameter of seat tube will these fit?
Or maybe the Ritchey numbers are wrong, because a seat topper with a bore of 38.35mm ain't gonna fit very well on a seat tube of 37mm.
Thanks for any comments.
Ritchey Mast Topper Diameters
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- Stolichnaya
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Don't overcomplicate this.
The Ritchey numbers are ID - internal diameter.
These seatmasts will fit seat tubes with the same number as an OD - outside diameter.
If you have a frame with a 37.0 OD ISP, then the Ritchey options are not for your frame, unless you cobble a shim together.
The Ritchey numbers are ID - internal diameter.
These seatmasts will fit seat tubes with the same number as an OD - outside diameter.
If you have a frame with a 37.0 OD ISP, then the Ritchey options are not for your frame, unless you cobble a shim together.