The ones that showed up at the field certainly wern't strong enough. That was a few years ago. The newer drills have better battery capacity so the new ones may work. The one I have is $28.00 at Tower Hobbies. If you can adapt the drill to accept the rubber cone, then thats one thing. If you have to modify the drill to get it to work, then it may just be cheaper to buy the starter. I am sure that the starter is cheaper than your drill.[8D]