It's not really a shame - it's a brilliant place to go in the winter. But I did really enjoy my one summer( -ish, it was -3c and snowed the first couple of nights!!) backpacking trip (to Trollheimen) and would like to do more. The only thing preventing it has been insufficient holiday time and competition from other great places. With Norway getting an almost-annual winter trip, areas like the Pyrenees, Corsica, Picos, Dolomites, Scotland, cycle touring, etc. have tended to eat up the summer time... so far.
on my laptop. I have some genuine Garmin mapping for the gps for Jotunheimen/Skarvheimen, plus some opensource road and contour mapping (Frikart iirc) to cover the rest of the country.
And on last week's trip I was pointed to a couple of handy android apps for the phone. One is the app version of ut.no. The other, which sounds very useful, is called Norgeskart, and includes mapping from the official survey that seems to be as detailed as the Garmin version. Apparently it's free to download any sections of detailed map so it's available for offline use, but the map expires after two weeks. You can delete it and re-download it or download fresh areas, so it's potentially very useful for an extended trip as long as you can access wifi occasionally to keep it up-to-date and activated.
We bussed back to Oslo from Lom yesterday (having exited the mountains via a taxi from Spiterstulen). I've also caught the same bus a couple of times from further west at Grotli when exiting the southern edge of the Tafjordfjell region (hmm, now there's another area with some stunning mountains and relatively few people).
At the bus terminal in Lom it looked like there were stands for local services too as well as the Nettbuss express service, so it may be possible to get closer access to the mountains without a taxi... I can't confirm though.
Plenty of Joika in the huts at the moment ... but then it is still pre-Easter.
A bit late to this one as I'm just back from Norway this afternoon (trip report to follow soon I hope). And I've no direct experience of the Hardangervidda to offer beyond what others have said - my trips have only extended slightly north of Rjukan and south of Finse, and have all been in winter. Then again, whilst appreciating the Hardanger as a vast wilderness plateau, I'd also recommend heading into the region north of Finse where the mountains begin to get a bit more shapely - certainly Skarvheimen but also a bit further north into the area that links to the southern Jotunheimen. There aren't that many huts in the area and whilst Geitteryghytta and Iungsdalen are moderate-sized staffed huts, the remainder (e.g. Kongshelleren, Bjordalsbu, Sulebu, Slettningsbu) are small self-service ones, so unlikely to attract hoards, and easy to avoid if preferred. As well as at Finse, the area can be accessed / exited from the Hemsedal-Borlaug road or from the roads near lake Tyin by bus from Oslo.
Me too - twenty years of mountain biking and cycle touring and I've only ever used items from my hill-walking wardrobe. Some outdoor items I do buy now with an eye to them working on the bike rather than the hill, but an awful lot crosses over both activities.
I did once buy a pair of Polaris padded cycling shorts, which were quite good, but I don't even bother with padded shorts now. A pair of Mountain Hardwear stretch shorts have lasted about 10 years and are still going strong.