Build it | Build it Overview | Engine Types| Bar Types | Reduction Ratios

1. Usually these are 100cc, 210cc and 312 cc engines. The former is heavier than the 210cc, a higher revving engine and thus slightly louder. It employs a different reduction ratio to optimize peak rpm. The 210cc is probably the most common set up world wide and here a number of options are available. Different size props, normal exhausts and tuned or expansion boxes which deliver more horse power and different reduction ratios. The prop is not bolted directly onto the crank shaft of the engine, but instead onto another pulley which links to the crank shaft via a belt.

This ensures that the prop will turn at optimal speed. Heavier pilots and especially those flying at altitude should consider a set up containing a tuned exhaust. There is however a bone of contention linked to this statement. Pilots up to 85 kg`s should be able to fly a standard 210cc paramotor without a tuned exhaust, providing the correct prop and pulley ratio has been used. (Initially to facilitate becoming airborne without undertaking a marathon, limit take

off`s to headwind conditions. This will ensure adequate airflow over your wind (which is essential for flight) while at the same time reducing your ground run speed.

2. In order to maximize the power and thrust output from your unit there are a number of procedures available. These include reducing the barrel or head distance, porting the inlet and outlets and modifying your existing pulley ratios.

In order to facilitate easier starting a decompression valve may be fitted, or the exhaust port may be enlarged. TAKE CARE, some procedures may effect the thrust output and compensatory mechanisms then undertaken to increase the horse power again.

3. The 312 cc is a much more powerful engine and great for tandem flying. (Tandem flying may also be undertaken with a conventional 210cc, depending on pilot weight and take off altitude). The 312cc is however much heavier and far more expensive.

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