Cor, my thread took off!
Some good points/suggestions above. I’ve had a good look at various frames which might do the job, but the Octane one is a) pretty, b) versatile, c) fairly light for a jump frame, and d) shortish in the toptube.
The swapability of the wheels is an issue, but I’ve currently got an NS surge which i swap between a set of pro2-flows and pro2-crests, which is a 10 minute job. I’d like to sell this and build the Octane with her pro2-Olympic wheels, and swap with the flows for more silly riding.
Her current bike, a rock lobster XS frame is ok, but she finds it a bit steep, so this would also have the advantage of making her more confident on the descent, which is what she enjoys… and might help with my hidden agenda of her buying herself her own gravity-oriented bike… 😉