22" Vittoria Juniores Tubs / sew-ups + rim sizes

[zangolin]

Trying to track down any stocks of 22" diameter Vittoria Juniores Tubular Tyres. (yes little tiny tubs). For my daughters mini road bike.
http://www.vittoria.com/index.php?optio ... Itemid=116

Also does anyone have any ideas if there are any clincher rims + tyres which could be fitted as alternatives. The ERD for the current sprint rims is 463mm. Any ideas?

 

[lelobysfoot]

tubs

Well, I've seen 20" and 24" at the suppliers - Vittoria juniors and Conti Olympic 24" but no 22" in either tub or tyre.

Not even inner-tubes that size! What kind of bike is it? Will it take 24" wheels?