Originally Posted by
werewolf
"... an old early Garmin GPS that literally EATS 4xAA alkaline batteries in about three hours"
Which model? I've used Garmins for years. I still have my old model 2+ (as well as 2 newer models). Sometimes I take the 2+ on my bike, put it in the bag. Measures distance and leads me back to the place where i started, but no map. Forget about the alkalines. get the new hybrid rechargeables, like Eneloops or other brands. They are great and they hold the charge as opposed to regular rechargeables.
A problem with wireless on small wheel bikes is the wheel sensor is farther away from the handlebar than on a normal bike. I didn't have any luck with the one wireless i tried.
I still remember the old mechanical cyclometers that clicked with each wheel rotation. I guess they're extinct now.
I can't remember the model - it's buried somewhere in one of my electro -junk drawers and cupboards. Having had three teenaged and early twenties sons who have all now moved out and left me with old computers, obsolete games console rubbish, junked mobile phones, computer graphics cards etc - I have half my house given over to electro junk storage. I hate to thin how much it all cost.
I'm going to look up these eneloops batteries. I'm not having a great time with non - original rechargeable batteries at the moment, having had to return two types of substitute PDA batteries to the suppliers.
My wireless speed computer was really cheap and works great at about 90 cm from the sender unit on the forks.
EDIT: found it - Garmin GPS 12xl - stone age stuff ->
https://buy.garmin.com/shop/shop.do?pID=81