Originally Posted by
apage4u
We ride with the Cateye V3. Two head units, two heart monitors and one cadence/sppeed sending unit. The Cateye has sufficient range to mount the sending unit in the rear and reach both head units.
+1 We use the V2c (same unit but no heart rate) on one of our tandems and our triplet. With the sensor mounter on the back it will reach the front of the triplet with no problem. We only have one sensor for speed and cadence on each bike and pair all 2 or 3 unite to it. It has good battery life. A Garmin bike GPS battery won't last through a lot of the rides we do.