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	<title>Differential &#8211; Henry Poon&#039;s Blog</title>
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	<lastBuildDate>Sun, 20 Nov 2022 21:06:50 +0000</lastBuildDate>
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		<title>Lego McLaren Formula 1 Race Car</title>
		<link>https://blog.henrypoon.com/blog/2022/11/20/lego-mclaren-formula-1-race-car/</link>
					<comments>https://blog.henrypoon.com/blog/2022/11/20/lego-mclaren-formula-1-race-car/#respond</comments>
		
		<dc:creator><![CDATA[hp]]></dc:creator>
		<pubDate>Sun, 20 Nov 2022 21:05:03 +0000</pubDate>
				<category><![CDATA[engineering]]></category>
		<category><![CDATA[lego]]></category>
		<category><![CDATA[cars]]></category>
		<category><![CDATA[Construction]]></category>
		<category><![CDATA[Differential]]></category>
		<category><![CDATA[Drive]]></category>
		<category><![CDATA[Drivetrain]]></category>
		<category><![CDATA[Formula One]]></category>
		<category><![CDATA[Formula One car]]></category>
		<category><![CDATA[Lego]]></category>
		<category><![CDATA[Motor vehicles]]></category>
		<category><![CDATA[Rotation]]></category>
		<category><![CDATA[Sports cars]]></category>
		<category><![CDATA[Transmission]]></category>
		<category><![CDATA[Transport]]></category>
		<guid isPermaLink="false">https://blog.henrypoon.com/?p=8714</guid>

					<description><![CDATA[This is my build log showing all the cool things I noticed as I was building the Lego McLaren Formula 1 Race Car! Unlike the Millennium Falcon, I didn&#8217;t film a timelapse for this build. The build itself starts with the rear suspensions. There&#8217;s actually a spring built in that makes the suspension work. The [&#8230;]]]></description>
										<content:encoded><![CDATA[
<p class="wp-block-paragraph">This is my build log showing all the cool things I noticed as I was building the Lego McLaren Formula 1 Race Car!  Unlike the <a href="https://blog.henrypoon.com/blog/2019/09/17/lego-star-wars-millennium-falcon-ultimate-collector-series/" target="_blank" rel="noreferrer noopener">Millennium Falcon</a>, I didn&#8217;t film a timelapse for this build.</p>



<p class="wp-block-paragraph">The build itself starts with the rear suspensions.  There&#8217;s actually a spring built in that makes the suspension work.  The four arms are constrained to only allow up/down motion, while the central axle is attached to a ball and socket joint so that the rotational power can still be transferred from the engine.  When the car is built, you can push the car down and it&#8217;ll bounce back up to its neutral position.</p>



<figure class="wp-block-image size-full"><img data-recalc-dims="1" fetchpriority="high" decoding="async" width="1280" height="720" src="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?resize=1280%2C720&#038;ssl=1" alt="" class="wp-image-8717" srcset="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?w=2560&amp;ssl=1 2560w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?resize=768%2C432&amp;ssl=1 768w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?resize=1536%2C864&amp;ssl=1 1536w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?resize=2048%2C1152&amp;ssl=1 2048w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?resize=1240%2C698&amp;ssl=1 1240w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220914_125937849-scaled.jpg?resize=508%2C286&amp;ssl=1 508w" sizes="(max-width: 1280px) 100vw, 1280px" /></figure>



<p class="wp-block-paragraph">The set also includes a Lego reconstruction of the differential.  The differential allows each wheel to spin at different rates.  The video shows this in action with each wheel spinning opposite directions.  It even supports the transmission of power from the engine itself!  It&#8217;s really quite impressive!</p>



<figure class="wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
<iframe title="Lego McLaren F1 Race Car differential" width="1280" height="720" src="https://www.youtube.com/embed/p0Tw83cRgOQ?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
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<p class="wp-block-paragraph">I wasn&#8217;t as impressed with the engine as much though.  There are six cylinders, so I expected each piston to compress each 1/6 of a rotation, but Lego has trouble with this kind of resolution so it doesn&#8217;t do that.  Instead, as the drive shaft is rotated, two pistons can compress simultaneously.</p>



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<iframe title="Lego McLaren F1 Race Car engine has inaccurate piston compressions" width="1280" height="720" src="https://www.youtube.com/embed/dfvXyZ9JwFc?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
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<p class="wp-block-paragraph">From there, the build continues with the construction of the front of the car.  The car is two-wheel drive, just like the real F1 cars (done to save weight)</p>



<figure class="wp-block-image size-full"><img data-recalc-dims="1" loading="lazy" decoding="async" width="1280" height="720" src="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?resize=1280%2C720&#038;ssl=1" alt="" class="wp-image-8727" srcset="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?w=2560&amp;ssl=1 2560w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?resize=768%2C432&amp;ssl=1 768w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?resize=1536%2C864&amp;ssl=1 1536w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?resize=2048%2C1152&amp;ssl=1 2048w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?resize=1240%2C698&amp;ssl=1 1240w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220915_135615232-scaled.jpg?resize=508%2C286&amp;ssl=1 508w" sizes="auto, (max-width: 1280px) 100vw, 1280px" /></figure>



<p class="wp-block-paragraph">Because the F1 car is so low to the ground, the steering column must be horizontal.  The lack of 4WD reduces the space required for the front of the car means there&#8217;s less competition for space for the steering column.</p>



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<iframe loading="lazy" title="Lego McLaren F1 Race Car steering column" width="1280" height="720" src="https://www.youtube.com/embed/dFKM4-TzjPM?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div></figure>



<p class="wp-block-paragraph">The rest of the build completes the outer shell of the car &#8211; the aerodynamic stuff.  There&#8217;s a lot of sticker placement and some of the stickers are so small that having a small pair of tweezers would have been helpful to place them.</p>



<figure class="wp-block-image size-full"><img data-recalc-dims="1" loading="lazy" decoding="async" width="1280" height="720" src="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?resize=1280%2C720&#038;ssl=1" alt="" class="wp-image-8733" srcset="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?w=2560&amp;ssl=1 2560w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?resize=768%2C432&amp;ssl=1 768w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?resize=1536%2C864&amp;ssl=1 1536w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?resize=2048%2C1152&amp;ssl=1 2048w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?resize=1240%2C698&amp;ssl=1 1240w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204855449-1-scaled.jpg?resize=508%2C286&amp;ssl=1 508w" sizes="auto, (max-width: 1280px) 100vw, 1280px" /></figure>



<p class="wp-block-paragraph">Here&#8217;s the finished product!</p>



<figure class="wp-block-image size-full"><img data-recalc-dims="1" loading="lazy" decoding="async" width="1280" height="720" src="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?resize=1280%2C720&#038;ssl=1" alt="" class="wp-image-8734" srcset="https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?w=2560&amp;ssl=1 2560w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?resize=768%2C432&amp;ssl=1 768w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?resize=1536%2C864&amp;ssl=1 1536w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?resize=2048%2C1152&amp;ssl=1 2048w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?resize=1240%2C698&amp;ssl=1 1240w, https://i0.wp.com/blog.henrypoon.com/wp-content/uploads/2022/11/PXL_20220918_204546552.PORTRAIT-scaled.jpg?resize=508%2C286&amp;ssl=1 508w" sizes="auto, (max-width: 1280px) 100vw, 1280px" /></figure>
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