Whilst browsing my favourite electronics surplus site I came across this reversible speed controller for 10-30Vdc, it uses a Pot or servo signals
http://secure.oatleyelectronics.com//product_info.php?cPath=94 <http://secure.oatleyelectronics.com/product_info.php?cPath=94&products_id=2 06> &products_id=206 and at $40 ozzie dollars each (with additional MOSFETS) Pete -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat