Keith wrote:The power supply that came with my TReX charger, for example, is a switching mode unit, rated at DC16V at 3.75amp.
That's the same output as a lot of laptop adapters/chargers... I use one for my foam cutter (2 foot wire), works great with no regulator...
Ooh, interesting.
I've been reading up on foam cutters with a view to making my own wings. Seems like a strong and accurate method compared to the old built up methods...maybe less prone to warping too? (sorry, but I'm new to this method). Do you sheath yours in balsa or maybe fibreglass or carbon fibre cloth? I'm a bit dubious of my abilities using balsa sheathing and vacuum bagging etc.
Edit: I also have some computer power supplies lying around, one of which I converted as a power supply ready for a battery charger, but as it happened the TRex I bought locally came with a power supply. Paid too much for it in retrospect, but at least with a local dealer I could return it easily if the magic smoke came out when I got it home, unlike, say, a Turnigy unit from HobbyKing or wherever overseas.
Edit 2: Just came across this method, using contact adhesive with balsa sheeting...looks good and likely something I could do (well, assuming I want to become part of the wing).
http://www.jackdevinemodels.com/foam_bldg_technology.htm
What goes up...better bloody stay up (until I say otherwise).