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Comparison Heyner PedalPower vs Heyner PedalMax PRO

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Heyner PedalPower
Heyner PedalMax PRO
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Typefootfoot
Two-cylinder
Specs
Pressure gaugeanalogueanalogue
Max. pressure7 Atm10 Atm
Hose length0.6 m0.6 m
General
Cover/case
Size285x100x90 mm297x130x90 mm
Weight1.3 kg2.2 kg
Added to E-Catalogmay 2015may 2015

Two-cylinder

The presence of two cylinders in the design of the pump / compressor.

This feature is found mainly among compressors (see “Type”). Usually, it is a sign of a powerful performant device: two working cylinders allow pumping twice as much air in one cycle as in a single-cylinder model with the same diameter and piston stroke. This is especially useful when inflating large tyres such as trucks, buses, heavy SUVs, etc. The downside of this design is increased weight and dimensions, as well as increased energy consumption due to additional resistance on the pistons. So it makes sense to pay attention to such devices in cases where high performance is decisive for you.

On the market you can also find foot pumps with two cylinders; they share the same features.

Max. pressure

The maximum pressure provided by the pump or compressor — in other words, the highest tyre pressure that can be achieved using this unit.

In most models, this figure is from 2.5 to 10 atm, and in mechanical pumps (manual and foot, see "Type") pressure of more than 10 atm is practically not found at all. This is due to the fact that even for heavy trucks, the optimal tyre pressure is usually about 5 – 9 atm (depending on a number of parameters — there are special formulas and tables for calculations); and in passenger car tyres, a pressure of more than 2.5 atm is extremely rarely used. However, there are compressors with higher pressure parameters — 11 – 15 atm, 16 – 20 atm and even higher. The meaning of such characteristics is mainly in the "power reserve": a higher working pressure contributes to faster pumping. However, be careful not to over-inflate the tyre and damage it.
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