I have the medium road drive, I think, and can usually get my tires up to 90psi before I get bored. I think the problem with those mini ones is that they have a high volume, which makes it initially very easy to get lots of air in, but a lot harder when the pressure gets high. The road drive is a lot thinner, which means it puts in less air per stroke, but requires less force at higher pressures.
FWIW I have used it and the mini floor one and much prefer the road drive
I have the medium road drive, I think, and can usually get my tires up to 90psi before I get bored. I think the problem with those mini ones is that they have a high volume, which makes it initially very easy to get lots of air in, but a lot harder when the pressure gets high. The road drive is a lot thinner, which means it puts in less air per stroke, but requires less force at higher pressures.
FWIW I have used it and the mini floor one and much prefer the road drive