Okay, not a vast amount of hidden power, 200 watts is the claimed amount, but it should be enough to help you up those hills.
The Gruber Assist. An electric power assist motor for your bike that lives in the seat tube and only weighs 900g (the battery goes in a wedepack under your saddle and adds a further 1Kg. It produces a claimed 200 watts and the battery gives an hour and a half of continuous use. The idea is that you only turn it on when you have to go up hill.
To fit one you'll need a bike that's fitted with a Shimano Hollowtech II chainset and with a 31.6mm seat tube (or greater), so we're talking mountain bikes, trekking bikes, hybrids and some tourers. Oh, and you'll need a big pile of cash too as these things cost over $2,000 dollars.
And of course the whole thing is cheating!
Tony has been editing cycling magazines and websites since 1997 starting out as production editor and then deputy editor of Total Bike, acting editor of Total Mountain Bike and then seven years as editor of Cycling Plus. He launched his first cycling website - the Cycling Plus Forum at the turn of the century. In 2006 he left C+ to head up the launch team for Bike Radar which he edited until 2008, when he co-launched the multi-award winning road.cc - which he continues to edit today. His favourite ride is his ‘commute’ - which he does most days inc weekends and he’s been cycle-commuting since 1994. His favourite bikes are titanium and have disc brakes.