Editing Tricycle (section)

====Delta====
[[File:Kettwiesel-rot.jpg|thumb|Delta layout [[Hase Spezialräder]] Kettwiesel]]
A recumbent delta is similar to an upright, with two wheels at the back and one at the front, but has a recumbent layout in which the rider is seated in a chair-like seat. One or both rear wheels can be driven, while the front is used for steering (the usual layout). Steering is either through a linkage, with the handlebars under the seat (under seat steering) or directly to the front wheel with a large handlebar (over seat steering). Some delta trikes can be stored upright by lifting the front wheel and resting the top of the seat on the ground.

Delta trikes generally have higher seats and a tighter turning radius than tadpole trikes. The tight turning radius is useful if riding on trails with offset barriers, or navigating around closely placed obstacles. The higher seat makes mounting and dismounting easier. Even with the higher seat a delta trike can be quite stable provided most of the weight (including the rider) is shifted back towards the rear wheels. Many delta trikes place the seat too far forward and that takes weight off the two rear wheels and puts more weight onto the front wheel making the trike more unstable.<ref>{{cite web |title=The Golden Rule of Trike Design |date=10 April 2010 |url=http://def-proc.co.uk/b/zydsg |url-status=live |archive-url=https://web.archive.org/web/20231026134512/https://www.defproc.co.uk/analysis/the-golden-rule-of-trike-design/ |archive-date=2023-10-26 |access-date=2014-07-02}}</ref><ref>{{Cite web |url=http://www.murraystrikelinks.com/ |title=Murray's Trike Links |access-date=2016-12-23 |archive-date=2020-02-02 |archive-url=https://web.archive.org/web/20200202201730/http://murraystrikelinks.com/ |url-status=dead }}</ref> The Hase Kettwiesel delta trike has an {{Convert|18|in|abbr=on}} high seat that is placed to put most of the weight onto the cambered rear wheels making it more stable.

[[File:Tri-Fecta folded trike jeh.jpg|thumb|upright=0.9|Small folded delta trike parked in New York]]
Delta trikes are suitable to be used as manual scooters for mobility, rehabilitation and/or exercise. The Hase Lepus Comfort is an example of a rehabilitation delta trike designed mainly for comfort and ease of use. It has a lowered front boom and the seat can be adjusted to a height of {{Convert|20|to|28|in|abbr=on}}, which aids in mounting and dismounting. It also has rear wheel suspension for comfort. The {{Convert|56|lb|abbr=on}} Lepus can be folded for easier storage and transportation.

The weight of a delta trike can be quite close to the weight of a tadpole trike if they are both of a similar quality and similar materials are used. The Hase Kettwiesel Allround delta trike has an aluminium frame and weighs 39.4&nbsp;lbs (17.9&nbsp;kg).<ref>{{cite web|url=http://hasebikes.com|title=Startseite – Liegeräder, Tandems, E-Bikes, Handbikes}}</ref> The Catrike Road tadpole trike has an aluminium frame and weighs 37.5&nbsp;lbs (17&nbsp;kg).<ref>{{cite web|url=http://www.catrike.com|title=Catrike Recumbent Trikes}}</ref>