I've ran a 5100 and 651 in the same log, and they both felt very similar in power. The 5100 ran 6.81 and the 651 ran 7.19.
For the price the 5100 is definitely a better deal, but they both perform about the same in the wood. Who cares about no load rpm's, it's the rpm in the wood that counts.
For the price the 5100 is definitely a better deal, but they both perform about the same in the wood. Who cares about no load rpm's, it's the rpm in the wood that counts.
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