{{POLImage|Pololu-Romi-Chassis-Assembler-22.png|800px|Installer une boule (optionnelle) à l'avant du Romi}}
{{POLImage|Pololu-Romi-Chassis-Assembler-22.png|800px|Installer une boule (optionnelle) à l'avant du Romi}}
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6. '''Optional:''' The front ball caster is supported by a flexible arm that acts as a suspension system. If you want to make it stiffer, you can wrap a rubber band around the two hooks located on either side of the ball caster on the top side of the chassis
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{{POLImage|Pololu-Romi-Chassis-Assembler-23.png|800px|Un élastique peut servir de suspension complémentaire}}
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== Piles et couvercle ==
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The chassis works with four or six AA batteries (we recommend using rechargeable AA NiMH cells). The correct orientation for the batteries is indicated by the battery-shaped holes in the Romi chassis as well as the + and - indicators in the chassis itself.
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{{POLImage|Pololu-Romi-Chassis-Assembler-30.png|800px|Placer les piles sur le Romi}}