Join Date: Jul 2005
Location: Southampton, UK
Bikes: Gazelle Trim Trophy, EG Bates Track Bike, HR Bates Cantiflex bike, Nigel Dean fixed gear conversion, Raleigh Royal, Falcon Westminster.
Actually, there are users on the site who have mounted a twistgrip on a Minoura spacegrip and found it works fine. You don't put much pressure on just by changing gear. Alternately, others have had good luck by fitting a single MTB bar-end on the rising part of the stem (or on the steerer tube, on a threadless bike), and mounting the grip on that. Finally, Nitto do a fancy (and expensive) alloy version of the Minoura grip, which might just be perfect.