# Sperwill ST

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Sperwill_ST
> Markdown URL: https://mediated.wiki/source/Sperwill_ST.md
> Source: https://en.wikipedia.org/wiki/Sperwill_ST
> Source revision: 1321160232
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

British paramotor

Sperwill ST General information Type Paramotor National origin United Kingdom Manufacturer Sperwill Ltd Designer Riann Oliver Status Production completed

The **Sperwill ST** is a British [paramotor](/source/Paramotor) that was designed by Riann Oliver and produced by [Sperwill Ltd](/source/Sperwill_Ltd) of [Bristol](/source/Bristol) for [powered paragliding](/source/Powered_paragliding). Now out of production, when it was available the aircraft was supplied complete and ready-to-fly.[1]

## Design and development

The aircraft was designed to comply with the US [FAR 103 Ultralight Vehicles](/source/FAR_103_Ultralight_Vehicles) rules as well as European regulations. It features a [paraglider](/source/Paraglider)-style wing, single-place accommodation and a single 24.6 hp (18 kW) [Hirth F-33](/source/Hirth_F-33) engine in [pusher configuration](/source/Pusher_configuration) with a 2.3:1 ratio [reduction drive](/source/Reduction_drive) and a three-bladed, fixed-pitch wooden propeller. The fuel tank capacity is 9 litres (2.0 imp gal; 2.4 US gal). The aircraft is built from a combination of bolted [aluminium](/source/Aluminium) and [4130 steel](/source/4130_steel) tubing and dismantles for ground transport.[1]

As is the case with all paramotors, take-off and landing is accomplished by foot. Inflight steering is accomplished via handles that actuate the canopy brakes, creating roll and yaw.[1]

## Specifications (ST)

*Data from* Bertrand[1]

**General characteristics**

- **Crew:** one

- **Empty weight:** 28 kg (62 lb)

- **Fuel capacity:** 9 litres (2.0 imp gal; 2.4 US gal)

- **Powerplant:** 1 × [Hirth F-33](/source/Hirth_F-33) single cylinder, [two-stroke](/source/Two-stroke), air-cooled [aircraft engine](/source/Aircraft_engine), with a 2.3:1 [reduction drive](/source/Reduction_drive), 18.3 kW (24.6 hp)

- **Propellers:** 3-bladed wooden, fixed-pitch

## References

1. ^ [***a***](#cite_ref-WDLA04_1-0) [***b***](#cite_ref-WDLA04_1-1) [***c***](#cite_ref-WDLA04_1-2) [***d***](#cite_ref-WDLA04_1-3) Bertrand, Noel; Rene Coulon; et al: *World Directory of Leisure Aviation 2003-04*, page 75. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X

v t e Sperwill Ltd aircraft Powered paragliders 120 2+ 210 3+ CA ST TX

---
Adapted from the Wikipedia article [Sperwill ST](https://en.wikipedia.org/wiki/Sperwill_ST) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Sperwill_ST?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.