Originally Posted by
electrik
26" wheels will be stable at lower speeds, stronger and easily replaced if you travel to remote locations.
700c wheels are more stable at higher speeds, will give you a smoother and more efficient ride by cutting the rolling resistance(which increases based on weight).
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What I'm describing isn't stability from gyroscopic forces but a steering response that is neutral when leaning. This may be irrelevant handling issue with 25lbs on the front fork.