R/btpress-package.R
In dgabbe/btpress: Bike Tire Pressure Optimizer
#' btpress
#'
#' A program to calculate optimized bicycle tire pressure based on research that
#' found a small sag or droop in the profile of the tire, led to better
#' performance and comfort.
#'
#' Imagine that you could ride one gear faster or feel less fatigued at the end
#' of your ride and it cost you nothing. Tuning your bike tire pressure to your
#' own unique situation may do just that. There are now 2 independent studies
#' that support lower pressures are significantly better than pumping up your
#' tires until they are rock hard. It all depends on wider bike tires with
#' flexible sidewalls. Riding one gear higher, depending on your gearing,
#' is a 5 - 8\% increase.
#'
#' @section Directions for Use:
#'
#' The first step is evaluating whether your tires have flexible sidewalls
#' which will respond readily to tire pressure changes. Completely deflate your tires.
#' If the rim is resting on a pancaked tire, your tire should work well this method.
#' On other hand, puncture resistant tires,
#' \href{https://edsasslercoaching.com/product-reviews/nokian-a10-studded-winter-tires/}{snow tires},
#' and thick touring tires are supported by their sidewalls and do not
#' respond to pressure changes very well.
#'
#' The simplest way to calculate your tire pressure is to use the
#' \href{http://btp.frame38.com}{companion web app}, which uses this package.
#'
#' To calculate your tire pressures, execute this code sequence:
#' ```{r eval=FALSE}
#' my_bike <- bike_tire_pressures() # Supply your values for the parameters
#' plot_bike_inflation(bike = my_bike)
#' ```
#' If a test ride indicates that the tire pressure is really too low, it's
#' likely your pressure gauge is reading too high. Try increasing your
#' pressure by 10psi. Remember this is not an exact science nor setting so
#' some experimentation may be needed.
#'
#' Extra light casings need an extra 10-15\% pressure to prevent the casing
#' threads from breaking.
#'
#' Suppose your trials indicate a performance improvement and you'd like to
#' \href{https://janheine.wordpress.com/2017/06/21/choosing-your-tires/}{explore other tire options},
#' or it's simply time for new tires. A wider tire is a great option to
#' \href{https://janheine.wordpress.com/2013/03/12/how-wide-a-tire-can-i-run/}{consider}.
#' The following code compares 2 setups and builds upon the first example.
#' ```{r eval=FALSE}
#' new_tires <- bike_tire_pressures() # Supply new tires for the parameters
#' plot_2_bike_inflation(bike_a = my_bike, bike_b = new_tires)
#' ```
#' @section Choosing Between Bike and Load Weights:
#'
#' Bikes are for transporting gear around, but where your gear is attached
#' will impact bike handling. Increasing load weight decreases handling
#' stability. While your bike weight remains constant, your cargo weight could
#' vary from 0 to 20lbs and that will change tire pressure quite a bit.
#'
#' Calculating how your load is distributed between both wheels depends on
#' factors unique to each bike that it is best to measure them. We can
#' generalize about standard configurations and the following example will
#' highlight the limitations.
#'
#' Example coming soon!
#'
#' If the rider is carrying a bike lock or backpack,
#' their weight should be added to the rider weight, not the load weight.
#'
#' It's unwise to assume a front/rear weight distribution when there are loads
#' on both the front and rear racks. My recommendation is to measure the
#' distribution on a level surface. Place a bathroom scale under one wheel
#' and a spacer block, the same height as the scale, under the other
#' wheel. Load up the bike, hop on, and have a helper steady you and read the
#' numbers. Flip the bike around and measure the other wheel. Divide the front
#' weight by the rear weight and use that for the `front_distribution`
#' parameter.
#'
#' @section Rim Widths:
#'
#' The original research was conducted when internal widths for road rims were
#' around 19mm. Today's rims are available in wider sizes, 23 - 25mm,
#' increasing the volume up to 33\%. For these rims, measure the tire width with a
#' digital or analog caliper and use that value for the tire width parameters.
#'
#'
#' @section Pump Gauge Inaccuracies - Simple:
#'
#' Built-in pump gauges are inaccurate. Between a wide tolerance range of the
#' pressure-sensing mechanism and imprecise reading of the gauge needle due to
#' parallex, the indicated pressure should be considered an approximation.
#'
#' A simple experiment can help determine how your pump is reading. Inflate
#' your tires to the calculated pressure plus another 15psi. If a test ride
#' seems harsher or your bike bounces around more, the pressure is too high.
#' Repeat, but this time inflate to 15psi less than the calculated pressure.
#' If your wheels bottom out or the handling is squirmy, the pressure is too
#' low. Adjust in increments of 5psi and repeat until satisfied.
#'
#' For road tubeless setups, exceeding 60psi seems to increase the likelihood
#' of a tire blowoff as nicely summarized in this
#' \href{https://janheine.wordpress.com/2017/05/29/the-trouble-with-road-tubeless/}{post}.
#'
#' @section Pump Gauge Inaccuracies - Advanced:
#'
#' Under development...
#'
#' @section Tire Mounting Instructions:
#'
#' If using an inner tube, inflate it so it barely holds its shape and lightly
#' coat with talc (talcum power). Then sprinkle some talc on the inside of the tire
#' casing to coat the entire surface. Flip the tire inside out if you find it's
#' easier to apply that way. This proceedure is mandatory for latex and light
#' weight butyl tubes.
#'
#' Then follow Sven Cycles \href{https://www.svencycles.com/blog/compass-tyre-mounting-instructions/}{marvelous instructions}.
#'
#' @section Heavy Riders, Tandems, and Cargo Bikes:
#'
#' Under development...
#'
#' @section Weight vs. Load:
#'
#' At the end of the day, these two are effectively the same. That said,
#' \emph{Weight} is used for the individual components that go into the
#' calculations. \emph{Load} is used to describe the forces the tires are
#' subject to.
#'
#' @section References:
#'
#' \itemize{
#' \item
#' \href{https://janheine.wordpress.com/2010/10/18/science-and-bicycles-1-tires-and-pressure/}{Science and Bicycles 1: Tires and Pressure}
#' \item
#' \href{https://janheine.wordpress.com/2015/01/26/the-tire-pressure-revolution/}{The Tire Pressure Revolution}
#' \item
#' \href{https://janheine.wordpress.com/2015/02/17/tire-pressure-data-and-details/}{Tire Pressure: Data and Details}
#' \item \href{https://janheine.wordpress.com/2015/11/19/why-wider-tires-corner-better/}{Why Wider Tires Corner Better}
#' \item
#' \href{https://janheine.wordpress.com/2018/01/31/one-of-the-5-fastest-tire-in-the-world/}{Compass Bon Jon Pass 700C x 35 in Top 5 Fastest Tires in the World}
#' \item
#' \href{https://silca.cc/blogs/journal/115178628-road-to-roubaix-the-complete-story}{Silca - Road to Roubaix - The Complete Story}
#' \item Part one,
#' \href{https://silca.cc/blogs/journal/118397252-tire-size-pressure-aero-comfort-rolling-resistance-and-more-part-1-how-we-got-to-now}{Tire Size, Pressure, Aero, Comfort, Rolling Resistance and More. Part 1: How We Got to Now}, of a five part series.
#' \item The original
#' \href{https://www.compasscycle.com/wp-content/uploads/2015/03/BQTireDrop.pdf}{\emph{Bicycle Quarterly} article}
#' \item
#' \href{https://www.hedcycling.com/blog/road-tire-pressure-for-plus-and-black-wheels/}{Road Tire Pressure For Plus And BLACK Wheels}
#' \item
#' \href{http://trstriathlon.com/talking-tires-with-joshua-poertner/}{Tire Pressure – Stop Guessing And Read The Science}
#' }
#'
#' @section Acknowledgments:
#'
#' Source for data and pratical application to Jan Heine and Frank Berto
#' published in
#' \emph{\href{https://www.compasscycle.com/wp-content/uploads/2015/03/BQTireDrop.pdf}{Bicycle Quarterly}}.
#'
#' The empirical curve fitting formula from the
#' \href{http://www.biketinker.com/2010/bike-resources/optimal-tire-pressure-for-bicycles/}{BikeTinker}.
#'
#' @section Disclaimer:
#'
#' Biking riding is an inherently risky activity. Remember the bike racer's
#' motto: \emph{Falling is a matter of 'when', not 'if'.} You are solely
#' responsible for not exceeding any limits including, but not exclusive of
#' your abilities, maximum tire inflation pressure, rim inflation pressure,
#' mininum tire clearance, and compatibility of tubeless tire and rim
#' combinations. Use of this app is at your risk and you assume all
#' liabilities.
#'
#' @section Full Disclosure:
#'
#' I ride and recommend
#' \href{https://www.compasscycle.com/product-category/components/tires/}{Compass Bicycle tires} and subscribe to
#' \emph{\href{https://www.bikequarterly.com/}{Bicycle Quarterly}}. I received
#' no compensation for this program.
#'
#' @docType package
#' @name btpress-package
NULL
dgabbe/btpress documentation built on Aug. 2, 2019, 12:55 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
#' btpress
#'
#' A program to calculate optimized bicycle tire pressure based on research that
#' found a small sag or droop in the profile of the tire, led to better
#' performance and comfort.
#'
#' Imagine that you could ride one gear faster or feel less fatigued at the end
#' of your ride and it cost you nothing. Tuning your bike tire pressure to your
#' own unique situation may do just that. There are now 2 independent studies
#' that support lower pressures are significantly better than pumping up your
#' tires until they are rock hard. It all depends on wider bike tires with
#' flexible sidewalls. Riding one gear higher, depending on your gearing,
#' is a 5 - 8\% increase.
#'
#' @section Directions for Use:
#'
#' The first step is evaluating whether your tires have flexible sidewalls
#' which will respond readily to tire pressure changes. Completely deflate your tires.
#' If the rim is resting on a pancaked tire, your tire should work well this method.
#' On other hand, puncture resistant tires,
#' \href{https://edsasslercoaching.com/product-reviews/nokian-a10-studded-winter-tires/}{snow tires},
#' and thick touring tires are supported by their sidewalls and do not
#' respond to pressure changes very well.
#'
#' The simplest way to calculate your tire pressure is to use the
#' \href{http://btp.frame38.com}{companion web app}, which uses this package.
#'
#' To calculate your tire pressures, execute this code sequence:
#' ```{r eval=FALSE}
#' my_bike <- bike_tire_pressures() # Supply your values for the parameters
#' plot_bike_inflation(bike = my_bike)
#' ```
#' If a test ride indicates that the tire pressure is really too low, it's
#' likely your pressure gauge is reading too high. Try increasing your
#' pressure by 10psi. Remember this is not an exact science nor setting so
#' some experimentation may be needed.
#'
#' Extra light casings need an extra 10-15\% pressure to prevent the casing
#' threads from breaking.
#'
#' Suppose your trials indicate a performance improvement and you'd like to
#' \href{https://janheine.wordpress.com/2017/06/21/choosing-your-tires/}{explore other tire options},
#' or it's simply time for new tires. A wider tire is a great option to
#' \href{https://janheine.wordpress.com/2013/03/12/how-wide-a-tire-can-i-run/}{consider}.
#' The following code compares 2 setups and builds upon the first example.
#' ```{r eval=FALSE}
#' new_tires <- bike_tire_pressures() # Supply new tires for the parameters
#' plot_2_bike_inflation(bike_a = my_bike, bike_b = new_tires)
#' ```
#' @section Choosing Between Bike and Load Weights:
#'
#' Bikes are for transporting gear around, but where your gear is attached
#' will impact bike handling. Increasing load weight decreases handling
#' stability. While your bike weight remains constant, your cargo weight could
#' vary from 0 to 20lbs and that will change tire pressure quite a bit.
#'
#' Calculating how your load is distributed between both wheels depends on
#' factors unique to each bike that it is best to measure them. We can
#' generalize about standard configurations and the following example will
#' highlight the limitations.
#'
#' Example coming soon!
#'
#' If the rider is carrying a bike lock or backpack,
#' their weight should be added to the rider weight, not the load weight.
#'
#' It's unwise to assume a front/rear weight distribution when there are loads
#' on both the front and rear racks. My recommendation is to measure the
#' distribution on a level surface. Place a bathroom scale under one wheel
#' and a spacer block, the same height as the scale, under the other
#' wheel. Load up the bike, hop on, and have a helper steady you and read the
#' numbers. Flip the bike around and measure the other wheel. Divide the front
#' weight by the rear weight and use that for the `front_distribution`
#' parameter.
#'
#' @section Rim Widths:
#'
#' The original research was conducted when internal widths for road rims were
#' around 19mm. Today's rims are available in wider sizes, 23 - 25mm,
#' increasing the volume up to 33\%. For these rims, measure the tire width with a
#' digital or analog caliper and use that value for the tire width parameters.
#'
#'
#' @section Pump Gauge Inaccuracies - Simple:
#'
#' Built-in pump gauges are inaccurate. Between a wide tolerance range of the
#' pressure-sensing mechanism and imprecise reading of the gauge needle due to
#' parallex, the indicated pressure should be considered an approximation.
#'
#' A simple experiment can help determine how your pump is reading. Inflate
#' your tires to the calculated pressure plus another 15psi. If a test ride
#' seems harsher or your bike bounces around more, the pressure is too high.
#' Repeat, but this time inflate to 15psi less than the calculated pressure.
#' If your wheels bottom out or the handling is squirmy, the pressure is too
#' low. Adjust in increments of 5psi and repeat until satisfied.
#'
#' For road tubeless setups, exceeding 60psi seems to increase the likelihood
#' of a tire blowoff as nicely summarized in this
#' \href{https://janheine.wordpress.com/2017/05/29/the-trouble-with-road-tubeless/}{post}.
#'
#' @section Pump Gauge Inaccuracies - Advanced:
#'
#' Under development...
#'
#' @section Tire Mounting Instructions:
#'
#' If using an inner tube, inflate it so it barely holds its shape and lightly
#' coat with talc (talcum power). Then sprinkle some talc on the inside of the tire
#' casing to coat the entire surface. Flip the tire inside out if you find it's
#' easier to apply that way. This proceedure is mandatory for latex and light
#' weight butyl tubes.
#'
#' Then follow Sven Cycles \href{https://www.svencycles.com/blog/compass-tyre-mounting-instructions/}{marvelous instructions}.
#'
#' @section Heavy Riders, Tandems, and Cargo Bikes:
#'
#' Under development...
#'
#' @section Weight vs. Load:
#'
#' At the end of the day, these two are effectively the same. That said,
#' \emph{Weight} is used for the individual components that go into the
#' calculations. \emph{Load} is used to describe the forces the tires are
#' subject to.
#'
#' @section References:
#'
#' \itemize{
#' \item
#' \href{https://janheine.wordpress.com/2010/10/18/science-and-bicycles-1-tires-and-pressure/}{Science and Bicycles 1: Tires and Pressure}
#' \item
#' \href{https://janheine.wordpress.com/2015/01/26/the-tire-pressure-revolution/}{The Tire Pressure Revolution}
#' \item
#' \href{https://janheine.wordpress.com/2015/02/17/tire-pressure-data-and-details/}{Tire Pressure: Data and Details}
#' \item \href{https://janheine.wordpress.com/2015/11/19/why-wider-tires-corner-better/}{Why Wider Tires Corner Better}
#' \item
#' \href{https://janheine.wordpress.com/2018/01/31/one-of-the-5-fastest-tire-in-the-world/}{Compass Bon Jon Pass 700C x 35 in Top 5 Fastest Tires in the World}
#' \item
#' \href{https://silca.cc/blogs/journal/115178628-road-to-roubaix-the-complete-story}{Silca - Road to Roubaix - The Complete Story}
#' \item Part one,
#' \href{https://silca.cc/blogs/journal/118397252-tire-size-pressure-aero-comfort-rolling-resistance-and-more-part-1-how-we-got-to-now}{Tire Size, Pressure, Aero, Comfort, Rolling Resistance and More. Part 1: How We Got to Now}, of a five part series.
#' \item The original
#' \href{https://www.compasscycle.com/wp-content/uploads/2015/03/BQTireDrop.pdf}{\emph{Bicycle Quarterly} article}
#' \item
#' \href{https://www.hedcycling.com/blog/road-tire-pressure-for-plus-and-black-wheels/}{Road Tire Pressure For Plus And BLACK Wheels}
#' \item
#' \href{http://trstriathlon.com/talking-tires-with-joshua-poertner/}{Tire Pressure – Stop Guessing And Read The Science}
#' }
#'
#' @section Acknowledgments:
#'
#' Source for data and pratical application to Jan Heine and Frank Berto
#' published in
#' \emph{\href{https://www.compasscycle.com/wp-content/uploads/2015/03/BQTireDrop.pdf}{Bicycle Quarterly}}.
#'
#' The empirical curve fitting formula from the
#' \href{http://www.biketinker.com/2010/bike-resources/optimal-tire-pressure-for-bicycles/}{BikeTinker}.
#'
#' @section Disclaimer:
#'
#' Biking riding is an inherently risky activity. Remember the bike racer's
#' motto: \emph{Falling is a matter of 'when', not 'if'.} You are solely
#' responsible for not exceeding any limits including, but not exclusive of
#' your abilities, maximum tire inflation pressure, rim inflation pressure,
#' mininum tire clearance, and compatibility of tubeless tire and rim
#' combinations. Use of this app is at your risk and you assume all
#' liabilities.
#'
#' @section Full Disclosure:
#'
#' I ride and recommend
#' \href{https://www.compasscycle.com/product-category/components/tires/}{Compass Bicycle tires} and subscribe to
#' \emph{\href{https://www.bikequarterly.com/}{Bicycle Quarterly}}. I received
#' no compensation for this program.
#'
#' @docType package
#' @name btpress-package
NULL
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