www.bikecad.ca - bicycle dimensions
https://www.bikecad.ca/taxonomy/term/174
enSaddle to handlebar reach
https://www.bikecad.ca/saddle_to_handlebar_reach
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><img src="https://www.bikecad.ca/faqFiles/saddle_to_handlebar_reach.png" width="800" height="522" alt="Saddle to handlebar reach" title="Saddle to handlebar reach" />
<p>Saddle to handlebar reach is defined as the distance from the tip of the saddle to the center of the handlebar. This measurement is also available as the horizontal component of this distance and also the distance from the tip of the saddle to the back edge of the handlebar.</p></div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/444">saddle to handlebar reach</a></div><div class="field-item odd"><a href="/taxonomy/term/92">reach</a></div><div class="field-item even"><a href="/taxonomy/term/363">Saddle</a></div><div class="field-item odd"><a href="/taxonomy/term/445">handlebar</a></div><div class="field-item even"><a href="/taxonomy/term/174">bicycle dimensions</a></div></div></div>Fri, 31 Oct 2014 18:34:10 +0000bcurry39607 at https://www.bikecad.cahttps://www.bikecad.ca/saddle_to_handlebar_reach#commentsSaddle (Fore and aft positioning)
https://www.bikecad.ca/saddle_fore_and_aft
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><div class="video-container"><iframe frameborder="0" src="//www.youtube.com/embed/J7x3fqPPn_I" width="800" height="480"></iframe></div><p>In this video, I will demonstrate how you can slide the saddle fore and aft along the rails in BikeCAD using the Fore and aft slider. As you can see, if we've assigned a <a title="Saddle height" href="http://www.bikecad.ca/saddle_height">saddle height</a> of 700mm, BikeCAD will retain this saddle height no matter where we position the saddle along the rails. It maintains this saddle height by sliding the seatpost in and out of the seat tube. As the saddle is slid further forward, although the distance from the bottom bracket to the top of the saddle will remain the same, the saddle will be positioned closer to vertically over the bottom bracket. This change in position makes the saddle slightly higher off the ground increasing the overall height of the bike. Because BikeCAD scales the view according to this height, you'll notice the scale of the display changing as you move the saddle. If you'd like to lock the scale of the display you can do so with the <a title="Lock scale" href="http://www.bikecad.ca/lock_scale">Lock scale</a> icon.</p><p>The slider corresponds to the position of the saddle clamp along the straight length of saddle rail. The length of this straight section is controlled by dimension <strong>R</strong> in the Saddle dialog box. In BikeCAD <a title="Version 10" href="http://www.bikecad.ca/version_10">version 10.5</a> we can control the clamp position with greater precision through the new dimensional input field. This input field specifies the distance in millimetres by which the saddle is shifted forward or backward from the centre of the rails. If we should ever change the length of the straight section of rail, the distance from the centre of the saddle clamp to the centre of the rails will remain the same. However, the slider will shift slightly to reflect how that clamp position now represents a different percentage of the overall length of rail.</p></div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/363">Saddle</a></div><div class="field-item odd"><a href="/taxonomy/term/364">Fore and aft</a></div><div class="field-item even"><a href="/taxonomy/term/174">bicycle dimensions</a></div><div class="field-item odd"><a href="/taxonomy/term/58">lock scale</a></div></div></div>Thu, 16 Jan 2014 04:09:10 +0000bcurry29430 at https://www.bikecad.cahttps://www.bikecad.ca/saddle_fore_and_aft#commentsQ Factor
https://www.bikecad.ca/q_factor
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><img src="https://www.bikecad.ca/faqFiles/Q_factor.png" width="775" height="190" alt="Q factor" title="Q factor" />
<p>Q factor is the distance between the two outer faces of the crank arms where the pedals are attached. Q factor is measured parallel to the bottom bracket spindle.</p></div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/330">Q factor</a></div><div class="field-item odd"><a href="/taxonomy/term/174">bicycle dimensions</a></div><div class="field-item even"><a href="/taxonomy/term/304">Crankset</a></div></div></div>Sat, 02 Feb 2013 17:46:21 +0000bcurry16919 at https://www.bikecad.cahttps://www.bikecad.ca/q_factor#commentsBrake Hole Angle
https://www.bikecad.ca/brake_hole_angle
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><div class="clearfix"><p>The angle of the brake hole for caliper brakes on rigid forks can be controlled in the θ input field in the <em>Forks</em> dialog box <img class="blackborder" title="Fork icon" src="https://www.bikecad.ca/faqFiles/FORK.png" alt="Fork icon" width="24" height="24" />.</p><img class="blackborder floright" title="Brake hole angle" src="https://www.bikecad.ca/faqFiles/brake_hole_angle.gif" alt="Brake hole angle" width="393" height="343" /></div></div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/174">bicycle dimensions</a></div><div class="field-item odd"><a href="/taxonomy/term/324">caliper brake hole</a></div><div class="field-item even"><a href="/taxonomy/term/177">fork</a></div></div></div>Sun, 27 Jan 2013 22:28:41 +0000bcurry16665 at https://www.bikecad.cahttps://www.bikecad.ca/brake_hole_angle#commentsSaddle to Pedal Dimensions (Showing)
https://www.bikecad.ca/saddle_to_pedal
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><div class="video-container"><iframe frameborder="0" src="https://www.youtube.com/embed/xW0REJcKIWQ" width="800" height="480"></iframe></div><p>A couple of new dimensions added to BikeCAD Pro version 9.15 include the saddle to drive side pedal dimension and the saddle to non-drive side pedal dimension.</p><p>If we animate this model we can see how these measurements will change as the cranks rotate.</p><p>If we pull up the drivetrain dialog box <img class="blackborder" title="Drivetrain" src="https://www.bikecad.ca/faqFiles/DRIVETRAIN.png" alt="Drivetrain" width="28" height="24" />, we can move the cranks into any specific orientation we like.</p><p>By default, the reference point on the saddle is the lowest point on the top surface of the saddle. However, as with all measurements taken from the saddle, we can shift this point left or right and up and down using the <a title="Saddle reference point" href="https://www.bikecad.ca/saddle_reference_point">saddle reference point dimensions</a> in the Saddle dialog box <img class="blackborder" title="Saddle" src="https://www.bikecad.ca/faqFiles/SADDLE.png" alt="Saddle" width="25" height="24" />.</p></div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/174">bicycle dimensions</a></div><div class="field-item odd"><a href="/taxonomy/term/323">saddle to pedal</a></div><div class="field-item even"><a href="/taxonomy/term/47">saddle reference point</a></div></div></div>Sun, 27 Jan 2013 21:28:18 +0000bcurry16663 at https://www.bikecad.cahttps://www.bikecad.ca/saddle_to_pedal#commentsSeat angle dimension on a curved seat tube
https://www.bikecad.ca/angle_from_bb_to_top_of_seat_tube
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><img title="Seat angle on a curved seat tube" src="https://www.bikecad.ca/faqFiles/angle_BB_to_top_of_seat_tube.png" alt="Seat angle on a curved seat tube" width="800" height="462" /></p>
<p><a href="https://www.bikecad.ca/seat_angle">Seat angle</a> is generally understood to be the angle of the seat tube relative to the horizontal. However, when a curved seat tube is used, there is potential for confusion as to how that <a href="https://www.bikecad.ca/seat_angle">seat angle</a> should be measured. In BikeCAD, <a href="https://www.bikecad.ca/seat_angle">seat angle</a> is always equal to the angle of the <em>seatpost</em> or in other words, the top straight section of the seat tube. When setting up a fixture, it may be useful to know the angle from the center of the bottom bracket to the top of the seat tube. In <a href="https://www.bikecad.ca/bikecadpro">BikeCAD Pro</a>, we can show this angle by selecting <em>Jig setup >> Angle from BB to top of seat tube</em> in the <a href="https://www.bikecad.ca/dimensions_dialog">Dimensions dialog box</a>. Another dimension that can be useful when dealing with curved seat tubes or with bikes that employ an unconventional amount of <a href="https://www.bikecad.ca/seatpost_setback">seatpost setback</a> is the <a href="https://www.bikecad.ca/effective_seat_tube_angle">Effective seat tube angle</a>.</p>
</div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/129">Seat angle</a></div><div class="field-item odd"><a href="/taxonomy/term/174">bicycle dimensions</a></div></div></div>Fri, 21 Dec 2012 06:24:56 +0000bcurry15491 at https://www.bikecad.cahttps://www.bikecad.ca/angle_from_bb_to_top_of_seat_tube#commentsSaddle height (Changing)
https://www.bikecad.ca/saddle_height_changing
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>To change the <a href="https://www.bikecad.ca/saddle_height">saddle height</a>, click on the Saddle icon <img class="blackborder" src="https://www.bikecad.ca/faqFiles/SADDLE.png" alt="" width="25" height="24" /> to launch the <em>Saddle</em> dialog box. Saddle height is the first input field in the dialog box. Don't forget to <a href="https://www.bikecad.ca/hit_enter">hit enter</a> after changing the value. <a title="BikeCAD Version 10.5" href="https://www.bikecad.ca/version_10">BikeCAD version 10.5</a> introduced two additional options for locating the <a title="Positioning the saddle" href="https://www.bikecad.ca/saddle_position">position of the saddle</a>.</p>
<p><img title="Saddle height" src="https://www.bikecad.ca/faqFiles/saddle_height_dialog.png" alt="Saddle height" width="550" height="664" /></p>
</div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/48">saddle height</a></div><div class="field-item odd"><a href="/taxonomy/term/174">bicycle dimensions</a></div></div></div>Tue, 18 Dec 2012 15:31:21 +0000bcurry15370 at https://www.bikecad.cahttps://www.bikecad.ca/saddle_height_changing#commentsSeatpost insertion
https://www.bikecad.ca/seatpost_insertion
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><img title="Seatpost insertion" src="https://www.bikecad.ca/faqFiles/seatpost_exposed_and_inserted.png" alt="Seatpost insertion" width="800" height="475" /></p>
<p>The <em>Length of seatpost inserted</em> dimension shows the length of seatpost that is inserted into the frame. The <em>Length of seatpost exposed</em> dimension shows the length of seatpost that is not inserted. The <em>Length of seatpost exposed</em> dimension is taken from the top of the seat tube to the seatpost clamp and is measured parallel to the seatpost. These dimensions can be found in the <a href="https://www.bikecad.ca/dimensions_dialog">Dimensions</a> dialog box under <em>Components >> Seatpost</em>.</p>
</div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/318">seatpost</a></div><div class="field-item odd"><a href="/taxonomy/term/174">bicycle dimensions</a></div><div class="field-item even"><a href="/taxonomy/term/319">insertion</a></div></div></div>Fri, 14 Dec 2012 23:03:17 +0000bcurry15234 at https://www.bikecad.cahttps://www.bikecad.ca/seatpost_insertion#commentsDimensions (Understanding the meaning of)
https://www.bikecad.ca/understanding_dimensions
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><img title="Crazy Dimensions" src="https://www.bikecad.ca/faqFiles/crazy_bike.png" alt="Crazy Dimensions" width="800" height="366" /></p>
<p>If you can't find the definition for a given dimension in the <a href="https://www.bikecad.ca/faq">glossary</a>, and you are still unsure of what it is meant to control, do feel free to <a href="https://www.bikecad.ca/contact">ask me</a>, but also consider entering some incredibly large or small value as a test. By observing how the bike changes when you enter a really big or really small dimension, you may come to understand the meaning of a dimension. Also, consider finding that dimension in the <a href="https://www.bikecad.ca/dimensions_dialog">Dimensions dialog box</a> and displaying that while adjusting your design.</p>
</div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/174">bicycle dimensions</a></div></div></div>Wed, 12 Dec 2012 03:45:56 +0000bcurry15146 at https://www.bikecad.cahttps://www.bikecad.ca/understanding_dimensions#commentsGearing Data (Displaying)
https://www.bikecad.ca/gearing_data
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>
Below is a description of the various graphs that BikeCAD can generate to display gearing data. To see the graphs in BikeCAD, choose <em>View >> Gearing graph</em> or click on the <img src="https://www.bikecad.ca/faqFiles/GEARING_GRAPH.png" class="blackborder" alt="Gearing graph icon" title="Gearing graph icon" width="24" height="24"> icon in the top toolbar.
</p>
<IMG SRC="https://www.bikecad.ca/faqFiles/rollout.gif" width="528" height="288" ALT="Rollout or meters of development" TITLE="Rollout or meters of development" class="center" />
<P>
<em>Rollout</em> (or <em>meters of development</em>) refers to the distance travelled due to a single turn of the cranks. Rollout is calculated with the following formula:</p>
<p style="text-align: center;"><em>Circumference of drive wheel × number of teeth in front chainring / number of teeth in rear cog</em></p>
<p>
Rollout is typically calculated in meters or feet. In BikeCAD, you can express it in meters, feet, inches, or millimeters. The selected chainring and sprocket combinations are listed on the left and the resulting rollout is displayed on the right, next to the bar graph which gives a visual representation of the magnitude.
</p>
<IMG SRC="https://www.bikecad.ca/faqFiles/gear_inches.gif" width="528" height="288" ALT="Gear inches" TITLE="Gear inches" class="center" />
<P>
<em>Gear inches</em> is a lot like <em>rollout</em> except while rollout is a function of drive wheel circumference, gear inches is a function of drive wheel diameter. Gear inches tells us how large a wheel we would need to achieve an equivalent mechanical advantage using no gearing at all. For example, riding a bike with a 26" wheel and a 32/16 chainring/cog combination is like riding a 52" wheel with no gears. Gear inches are calculated with the following formula:</p>
<p style="text-align: center;"><em>Diameter of drive wheel × number of teeth in front chainring / number of teeth in rear cog</em></p>
<p>
Gear inches is typically calculated in inches. However, BikeCAD can express it in inches, feet, meters or millimeters.
</p>
<IMG SRC="https://www.bikecad.ca/faqFiles/speed_for_cadence.gif" width="533" height="288" ALT="Speed for cadence" TITLE="Speed for cadence" class="center" />
<P>
Another possibly more meaningful way of thinking about gears is to account for pedaling speed (or cadence) and to determine the resulting speed of the bicycle at various gear combinations. As shown above, BikeCAD lets you enter a specific cadence and displays the resulting speed in either km/h or mph.
</P>
<IMG SRC="https://www.bikecad.ca/faqFiles/gain_ratio.gif" width="528" height="288" ALT="Gain ratio" TITLE="Gain ratio" class="center" />
<p>
One factor that is neglected in all the above calculations is crank arm length. Two otherwise identical bikes with different crank lengths will ultimately offer different degrees of mechanical advantage. The bike with the longer crank arms will offer a greater mechanical advantage.
The <em>Gain ratio</em> is calculated as: the distance travelled by the bike divided by the distance travelled by the pedals during one turn of the crank.
</p>
<p>One particularly nice thing about the <em>gain ratio</em> is that it is a unitless number. The value is the same whether you calculate it in inches or millimeters. A sample graph is shown above.
</p>
</div></div></div><div class="field field-name-field-tags field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/170">Gear inches</a></div><div class="field-item odd"><a href="/taxonomy/term/171">cadence</a></div><div class="field-item even"><a href="/taxonomy/term/172">speed</a></div><div class="field-item odd"><a href="/taxonomy/term/173">gain ratio</a></div><div class="field-item even"><a href="/taxonomy/term/175">rollout</a></div><div class="field-item odd"><a href="/taxonomy/term/174">bicycle dimensions</a></div></div></div>Thu, 13 Oct 2011 16:05:08 +0000bcurry1592 at https://www.bikecad.cahttps://www.bikecad.ca/gearing_data#comments