You can't know. However it is less likely than with a wooden prop. The first time that happened to me, I had the crank magnafluxed and found no damage. After that, I did not check it. However, you can't know.
"There is a time for building and a time for GOING TO THE GATHERING, and the time for building has long since expired." See you in Mt. Vernon - 2004 - KR Gathering http://KRGathering.org See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC

