by DaveN on Thu Aug 02, 2007 12:41 pm
Martin,
You've got two basic choices:
1)Garmin/Magellan or similar, dedicated handheld units. These let you create a route using waypoints - a sort of 'join the dots' approach, or with a PC interface and additional PC software (such as Fugawi or Memory Map) you can 'trace' a route and upload onto the GPS. You can also 'record' a route when you are being led, and follow it agian later. You will not get an OS map on the screen - just a line to follow. Some models do have road mapping which is useful. Some do suffer from a battery problem as Steve mentioned, but either packing the batteries with card/paper, or running the GPS of the bike's power solves this. These units also have the advantage of beind waterproof.
2) PocketPC based systems. These are based on a Windows/Palmos pocket PC, running MemoryMap or Fugawi (the latter is pretty crap on to use on a handheld in my opinion). Pocket PCs are fairly fragile, and you will need a Otterbox or similar to house them. These will give you an OS map on the screen - though it's not really viable to read on the move.
To be honest, if you are reasonable at map reading, then there is not great advantage to them (apart from recording new routes), I only use them because I love my gadgets!
Cheers
Dave