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in my opinion, the lezyne road drive is just as good as a frame pump. you can get 100psi out of it, without wanting to chuck it into traffic and just call your wife for a ride.
the best frame pumps have a narrow chamber, and the road drive is designed like this. what this does is push less air per stroke, but handles higher pressures better. so it'll take a little longer to get to 100psi than with a pump that has a fatter chamber, but it'll require less effort per stroke.
I still prefer a real frame pump, just because they're more convenient. but when I do need to take the road drive, I don't feel like I'm giving up any pumping power.
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