Thanks for all the replies, sorry Ive not acknowledged the responders before now, but were just in the proccess of selling our house, and its gone a bit mental, so Ive not been online for a bit. In reference to Geoffs comments re safety, how do you guys go about testing out your bots? Obviously drive testing isnt too major an issue with feathers, but what about weapons testing? I dont think Ill be going for a spinner myself (at least not yet), but your comments and advice are certainly encouraging, so once the move is out of the way, Ill be putting some effort into putting a chassis together. Thanks again for taking the time to reply

regards

Graham