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	<id>https://robotcombatwiki.com/index.php?action=history&amp;feed=atom&amp;title=Featherweight</id>
	<title>Featherweight - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://robotcombatwiki.com/index.php?action=history&amp;feed=atom&amp;title=Featherweight"/>
	<link rel="alternate" type="text/html" href="https://robotcombatwiki.com/index.php?title=Featherweight&amp;action=history"/>
	<updated>2026-11-08T19:59:21Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.11</generator>
	<entry>
		<id>https://robotcombatwiki.com/index.php?title=Featherweight&amp;diff=1146&amp;oldid=prev</id>
		<title>RobotRobot: Link new pages (round 3)</title>
		<link rel="alternate" type="text/html" href="https://robotcombatwiki.com/index.php?title=Featherweight&amp;diff=1146&amp;oldid=prev"/>
		<updated>2026-10-17T23:26:43Z</updated>

		<summary type="html">&lt;p&gt;Link new pages (round 3)&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 23:26, 17 October 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l39&quot;&gt;Line 39:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 39:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==See also==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==See also==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;[[Hobbyweight]]&amp;#039;&amp;#039;&amp;#039; (12 lb)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;[[Hobbyweight]]&amp;#039;&amp;#039;&amp;#039; (12 lb)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;* &#039;&#039;&#039;[[Lightweight]]&#039;&#039;&#039; (60 lb)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;[[Sportsman Classes]]&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;[[Sportsman Classes]]&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;[[RobotClasses|Robot Classes]]&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;#039;&amp;#039;&amp;#039;[[RobotClasses|Robot Classes]]&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>RobotRobot</name></author>
	</entry>
	<entry>
		<id>https://robotcombatwiki.com/index.php?title=Featherweight&amp;diff=1038&amp;oldid=prev</id>
		<title>RobotRobot: Remove unreachable cost citation</title>
		<link rel="alternate" type="text/html" href="https://robotcombatwiki.com/index.php?title=Featherweight&amp;diff=1038&amp;oldid=prev"/>
		<updated>2026-10-17T14:35:10Z</updated>

		<summary type="html">&lt;p&gt;Remove unreachable cost citation&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:35, 17 October 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l16&quot;&gt;Line 16:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 16:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Getting started==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Getting started==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are no common complete kits at 30 lb. Featherweights &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;can easily &lt;/del&gt;cost &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a few thousand dollars &amp;amp;ndash; university capstone projects&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;for example, have budgeted around $2,500&amp;amp;ndash;3,000 for one[https://lsuonline.lsu.edu/eng/mie/undergraduate/mechanicalengineering/capstone/2017Posters/P_22.pdf] &amp;amp;ndash; &lt;/del&gt;so most builders gain experience in the smaller classes first.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;There are no common complete kits at 30 lb. Featherweights cost &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;much more to build than insect-class robots&lt;/ins&gt;, so most builders gain experience in the smaller classes first.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Where they fight==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Where they fight==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>RobotRobot</name></author>
	</entry>
	<entry>
		<id>https://robotcombatwiki.com/index.php?title=Featherweight&amp;diff=1037&amp;oldid=prev</id>
		<title>RobotRobot: New page: Featherweight weight class overview (rules, typical builds, getting started, where they fight)</title>
		<link rel="alternate" type="text/html" href="https://robotcombatwiki.com/index.php?title=Featherweight&amp;diff=1037&amp;oldid=prev"/>
		<updated>2026-10-17T14:34:22Z</updated>

		<summary type="html">&lt;p&gt;New page: Featherweight weight class overview (rules, typical builds, getting started, where they fight)&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;The &amp;#039;&amp;#039;&amp;#039;Featherweight&amp;#039;&amp;#039;&amp;#039; class is for robots weighing up to &amp;#039;&amp;#039;&amp;#039;30 lb&amp;#039;&amp;#039;&amp;#039; (13.6 kg). Featherweights hit very hard, need serious arenas, and take real investment to build, so they&amp;#039;re fought at fewer events than the insect classes &amp;amp;ndash; mainly NHRL, some larger events, and in the UK under FRA rules. NHRL&amp;#039;s starter guide doesn&amp;#039;t recommend 30 lb as a first robot.[https://wiki.nhrl.io/wiki/index.php/Combat_Robotics_Starter%27s_Guide]&lt;br /&gt;
&lt;br /&gt;
__TOC__&lt;br /&gt;
&lt;br /&gt;
==Rules==&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;SPARC&amp;#039;&amp;#039;&amp;#039;: 30 lb (13.61 kg), called Featherweight in the &amp;#039;&amp;#039;&amp;#039;[[SPARC Tournament Procedures]]&amp;#039;&amp;#039;&amp;#039;. Shufflers can weigh 37.5 lb, non-traditional drives 45 lb, and walkers 60 lb.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;UK (FRA)&amp;#039;&amp;#039;&amp;#039;: 13.6 kg.[http://www.fightingrobots.co.uk/documents/Build-Rules.pdf]&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;NHRL&amp;#039;&amp;#039;&amp;#039;: 30 lb, its largest class.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Sportsman&amp;#039;&amp;#039;&amp;#039;: the 30 lb &amp;#039;&amp;#039;&amp;#039;[[Sportsman Classes|Sportsman]]&amp;#039;&amp;#039;&amp;#039; class, with limited weapon power, is the most common Sportsman weight.&lt;br /&gt;
&lt;br /&gt;
==Typical builds==&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Drive:&amp;#039;&amp;#039;&amp;#039; brushless motors through heavy-duty planetary gearboxes with hex outputs, and high-current ESCs.[https://repeat-robotics.com/collections/bigger-bots-12lb-30lb]&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Battery:&amp;#039;&amp;#039;&amp;#039; commonly 6S LiPo, sometimes higher.&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Materials:&amp;#039;&amp;#039;&amp;#039; machined aluminum, steel and titanium frames and armor, hardened tool steel weapons (see &amp;#039;&amp;#039;&amp;#039;[[Armor and Materials]]&amp;#039;&amp;#039;&amp;#039;).&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;Arena:&amp;#039;&amp;#039;&amp;#039; SPARC recommends 3/4&amp;quot; polycarbonate walls and at least a 16 &amp;amp;times; 16 ft floor, and notes that some older 30 lb arenas are no longer adequate for modern full-combat featherweights.[https://sparc.tools/SPARC_Arena_Construction_Best_Practices_v1.1.pdf]&lt;br /&gt;
&lt;br /&gt;
==Getting started==&lt;br /&gt;
There are no common complete kits at 30 lb. Featherweights can easily cost a few thousand dollars &amp;amp;ndash; university capstone projects, for example, have budgeted around $2,500&amp;amp;ndash;3,000 for one[https://lsuonline.lsu.edu/eng/mie/undergraduate/mechanicalengineering/capstone/2017Posters/P_22.pdf] &amp;amp;ndash; so most builders gain experience in the smaller classes first.&lt;br /&gt;
&lt;br /&gt;
==Where they fight==&lt;br /&gt;
At NHRL, at larger events such as &amp;#039;&amp;#039;&amp;#039;[https://robobrawl.illinois.edu/ Robobrawl]&amp;#039;&amp;#039;&amp;#039;, at some Sportsman events, and at UK FRA events.&lt;br /&gt;
&lt;br /&gt;
===NHRL 30 lb world champions===&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Year !! Champion&lt;br /&gt;
|-&lt;br /&gt;
| 2021 || MegatRON&lt;br /&gt;
|-&lt;br /&gt;
| 2022 || Emulsifier&lt;br /&gt;
|-&lt;br /&gt;
| 2023 || Emulsifier&lt;br /&gt;
|-&lt;br /&gt;
| 2024 || MegatRON&lt;br /&gt;
|-&lt;br /&gt;
| 2025 || KaZaA Lite&lt;br /&gt;
|}&lt;br /&gt;
Source: &amp;#039;&amp;#039;&amp;#039;[https://en.wikipedia.org/wiki/National_Havoc_Robot_League Wikipedia]&amp;#039;&amp;#039;&amp;#039; and the &amp;#039;&amp;#039;&amp;#039;[https://wiki.nhrl.io/wiki/index.php/NHRL:Stats:Event_Winners-30lb NHRL event winners list]&amp;#039;&amp;#039;&amp;#039;.&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;[[Hobbyweight]]&amp;#039;&amp;#039;&amp;#039; (12 lb)&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;[[Sportsman Classes]]&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
* &amp;#039;&amp;#039;&amp;#039;[[RobotClasses|Robot Classes]]&amp;#039;&amp;#039;&amp;#039;&lt;/div&gt;</summary>
		<author><name>RobotRobot</name></author>
	</entry>
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