Bicycle and motorcycle geometry (English Wikipedia)

Tony Foale (2006). Motorcycle Handling and Chassis Design: The Art and Science. Tony Foale. p. 3-1. ISBN 9788493328634. Retrieved 18 October 2013. the distance between the ground contact patch and the steering axis as measured at right angles to that axis. The SAE refer to [this] as 'Mechanical Trail'
Vittore Cossalter (2006). Motorcycle Dynamics. Lulu.com. p. 32. ISBN 9781430308614. Retrieved 18 October 2013. normal trail is the perpendicular distance between the front contact point and the steering head axis

calfeedesign.com

"Geometry of Bike Handling". Calfee Design. Retrieved 6 April 2011.

dclxvi.org

"An Introduction to Bicycle Geometry and Handling". C.h.u.n.k. 666. Archived from the original on 30 April 2011. Retrieved 7 April 2011.

dinamoto.it

Cossalter, Vittore (2006). "THE TRAIL". Archived from the original on 10 May 2006. Retrieved 14 December 2006.

doi.org

Jones, David E. H. (1 September 2006). "From the archives: The stability of the bicycle". Physics Today. 59 (9): 51–56. Bibcode:2006PhT....59i..51J. doi:10.1063/1.2364246.

harvard.edu

ui.adsabs.harvard.edu

Jones, David E. H. (1 September 2006). "From the archives: The stability of the bicycle". Physics Today. 59 (9): 51–56. Bibcode:2006PhT....59i..51J. doi:10.1063/1.2364246.

lemondbikes.com

"Lemond Racing Cycles". 2006. Archived from the original on 4 August 2006. Retrieved 8 August 2006.

motoczysz.com

"MotoCzysz". 2006. Archived from the original on 1 December 2006. Retrieved 14 December 2006.

motoguzzi-us.com

"Moto Guzzi USA". 2006. Archived from the original on 12 December 2006. Retrieved 11 December 2006.

nd.gov

legis.nd.gov

"CHAPTER 39-27 MOTORCYCLE EQUIPMENT" (PDF). 2006. Retrieved 14 December 2006.

phred.org

Josh Putnam. "Steering Geometry: What is Trail?". Archived from the original on 30 April 2011. Retrieved 7 April 2011.
Putnam, Josh (2006). "Steering Geometry: What is Trail?". Retrieved 8 August 2006.
Matchak, Tom (2006). "Fork Re-Raking and Head Angle Change" (PDF). Archived (PDF) from the original on 17 May 2008. Retrieved 30 May 2008.

pinkbike.com

Paul Aston (28 September 2015). "First Ride: Nicolai Mojo GeoMetron". PinkBike. Retrieved 26 February 2017. GeoMetron Details: 62–63.5° head angle, dependent upon shock and fork length.

python-lowracer.de

"Frame Geometry". Archived from the original on 20 April 2011. Retrieved 7 April 2011.

rbracing-rsr.com

"Rake & Trail Calculator". RB Racing. Retrieved 14 December 2013.

ridermagazine.com

Rider Contributor (30 June 2009). "Suspension and Understanding Motorcycle Rake and Trail". Rider Magazine. Archived from the original on 14 December 2013. Retrieved 14 December 2013. Rake is the angle, in degrees, that the steering head of the frame...is tilted back from the vertical {{cite web}}: |author= has generic name (help)

sheldonbrown.com

Rinard, Damon (1996). "Fork Lengths". Archived from the original on 26 October 2007. Retrieved 18 October 2007.

speedreaders.info

Kevin Atkinson (2013). The Singer Story: The Cars, Commercial Vehicles, Bicycles & Motorcycles. Veloce Publishing Ltd. Retrieved 14 December 2013. The curved front forks of a bicycle are a George Singer patent, and still in use today.

tonyfoale.com

Foale, Tony (2002). Motorcycle Handling and Chassis Design. Tony Foale Designs. pp. 3–11. ISBN 84-933286-1-8. Retrieved 3 June 2010.

uncc.edu

coe.uncc.edu

Watkins, Gregory K. "The Dynamic Stability of a Fully Faired Single Track Human Powered Vehicle" (PDF). Archived from the original (PDF) on 17 July 2006. Retrieved 23 August 2006.

web.archive.org

"Lemond Racing Cycles". 2006. Archived from the original on 4 August 2006. Retrieved 8 August 2006.
Rider Contributor (30 June 2009). "Suspension and Understanding Motorcycle Rake and Trail". Rider Magazine. Archived from the original on 14 December 2013. Retrieved 14 December 2013. Rake is the angle, in degrees, that the steering head of the frame...is tilted back from the vertical {{cite web}}: |author= has generic name (help)
"Moto Guzzi USA". 2006. Archived from the original on 12 December 2006. Retrieved 11 December 2006.
Hornsby, Andy (2006). "Back to School". Archived from the original on 4 April 2005. Retrieved 12 December 2006.
Rinard, Damon (1996). "Fork Lengths". Archived from the original on 26 October 2007. Retrieved 18 October 2007.
"Frame Geometry". Archived from the original on 20 April 2011. Retrieved 7 April 2011.
Josh Putnam. "Steering Geometry: What is Trail?". Archived from the original on 30 April 2011. Retrieved 7 April 2011.
"An Introduction to Bicycle Geometry and Handling". C.h.u.n.k. 666. Archived from the original on 30 April 2011. Retrieved 7 April 2011.
"MotoCzysz". 2006. Archived from the original on 1 December 2006. Retrieved 14 December 2006.
Watkins, Gregory K. "The Dynamic Stability of a Fully Faired Single Track Human Powered Vehicle" (PDF). Archived from the original (PDF) on 17 July 2006. Retrieved 23 August 2006.
Matchak, Tom (2006). "Fork Re-Raking and Head Angle Change" (PDF). Archived (PDF) from the original on 17 May 2008. Retrieved 30 May 2008.