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19th Mar 2006, 10:07

#6 (permalink)

chevvron

Join Date: Nov 2005

Location: Wildest Surrey

Age: 75

Posts: 10,820

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Received 98 Likes on 71 Posts

If those engines are similar to the ones used in racing karts, they max out at about 15,000 rpm; just imagine the tip speeds of those direct drive props!!