Editing Jetex (section)

== Jetex imitators and successors ==
[[File:Velojet 50-NZ.jpg|thumb|NZ-made Velojet micro-rocket motor]]
=== Velojet ===

The Velojet 50 and its larger sibling, the Velojet 100, were [[New Zealand]] designed and manufactured. They used standard Jetex fuel and had a safety pressure release at the front in the form of a disc against a pre-tensioned coil spring.<ref>{{Cite journal |date=March 1953 |title=Motor Mart |journal=Aeromodeller}}</ref>

=== Jet-X ===
In 1986, Powermax in the UK launched a range of newly formulated size 50 fuel and wick under the Jet-X brand.<ref>{{Cite journal |last=Freebrey |first=Peter |date=October 1986 |title=Back with a fizz! |journal=Aeromodeller |pages=596-598}}</ref> In the latter half of the 1990s, the company introduced their own 'Z' series motors, corresponding to the original Jetex 35, 50 and 100. From August 1995 Jet-X motors, fuel and fuse were commercially imported into the US. ''[[Flying Models]]'' told its readers that "safe and viable rocket power for model airplanes is back".<ref>{{Cite journal |last=Hunt |first=Bob |date=August 1995 |title=Editorial |journal=Flying Models |pages=5,6}}</ref>

=== Rapier ===
In 1998, a new non-reusable motor, called Rapier, was introduced by a Czech inventor, Dr. Jan Zigmund. It had similar weight, thrust and duration to Jetex, allowing many old plans for Jetex powered models to be built and flown with the new motors. The Rapier was a single use motor with a cardboard case and a ceramic nozzle, visually closer to a model rocket motor than the original reloadable Jetex.<ref>{{Cite web |date=May 2007 |title=Interview with Dr. Jan Zigmund |url=https://minimakety.cz/rapier/other/Interview-2007/index-en.php |access-date=10 April 2025 |website=MinimaketyCZ}}</ref>

=== Tendera ===
In early 2020, another range of non-reusable motors was introduced by a Polish inventor, Piotr Tendera. These are similar to the Rapiers, being one-time use motors having cardboard cases and ceramic nozzles.<ref>{{Cite web |last=Kidd |first=Terry |title=Tendera developments |url=https://jetex.org/index.php/blog/119-hello-from-terry-kid |access-date=10 April 2025 |website=Jetex.org}}</ref>

{| class="wikitable" style="text-align:center; width:80%;"
|+ Comparison table
|-
|
! scope="col" | Jetex Type
! scope="col" | Thrust ounces
! scope="col" | Tendera/Rapier equivalent
! scope="col" | Thrust mN
|-
! scope="row" | Jetex
|35
|0.35
|L1
|97
|-
! scope="row" | Jetex
|50
|0.50
|L2
|139
|-
! scope="row" | Jetex
|200
|2.0
|L3
|556
|-
|}