Rule Zero - Revision history

Markmellors: /* Construction */ fixed a typo

2025-08-17T12:34:22Z

Construction: fixed a typo

← Older revision		Revision as of 12:34, 17 August 2025
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	The wheels and tyres are from karts. the front wheels had their bearings replaced to match the scooters spindles. I machined adapters for the rears to bolt to the keyed rear axle.		The wheels and tyres are from karts. the front wheels had their bearings replaced to match the scooters spindles. I machined adapters for the rears to bolt to the keyed rear axle.

	The ~~thrtotle~~ and brakes are actuated by pedals. the pedals pull cables which turn a spring-loaded pot for the throttle, or the (hand) brake lever from the bike hydraulic brake.		The throttle and brakes are actuated by pedals. the pedals pull cables which turn a spring-loaded pot for the throttle, or the (hand) brake lever from the bike hydraulic brake.

	The bodywork is PVC tube covered in heat-formed recycled ABS sheet, and vinyl wrapped. The bumpers are ~70mm HDPE water pipe, also heat bent to form the rounded corners.		The bodywork is PVC tube covered in heat-formed recycled ABS sheet, and vinyl wrapped. The bumpers are ~70mm HDPE water pipe, also heat bent to form the rounded corners.

Markmellors: added info

2025-08-17T12:33:22Z

added info

← Older revision		Revision as of 12:33, 17 August 2025
Line 3:		Line 3:
	\|BuiltBy=Mark Mellors		\|BuiltBy=Mark Mellors
	\|Theme=Fire Engine		\|Theme=Fire Engine
	\|FirstRace=~~EMF~~ 2018?		\|FirstRace=Scrumpy Cup 2018
	\|CurrentStatus=Active		\|CurrentStatus=Active
	\|Motor=Vevor?		\|Motor=Vevor/Mophorn 1800W
	\|ESC= Vevor?		\|ESC= Vevor/Mophorn 1800W
	\|Battery=??		\|Battery=12S (48V) of EIG CO20B Lithium Ion 20Ah cells
	\|Transmission=??:?? Chain		\|Transmission=13:80 6mm Chain
	\|Contact=@MarkMellors		\|Contact=@MarkMellors
	}}		}}
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	[[File:RuleZeroOrigin.jpg\|thumb\|left]]		[[File:RuleZeroOrigin.jpg\|thumb\|left]]
	The name comes from the 0th rule of Hitchin Hackspace - Rule Zero - Do Not Be On Fire!		The name comes from the 0th rule of Hitchin Hackspace - Rule Zero - Do Not Be On Fire!
	The theme of the body is based around a fire engine from local Hertfordshire Fire & Rescue, constructed from a PVC pipe frame, ABS sheets, and printed vinyl?		The theme of the body is based around a fire engine from local Hertfordshire Fire & Rescue, constructed from a PVC pipe frame, ABS sheets, and printed vinyl


Line 22:		Line 22:

	==Construction==		==Construction==
	~~How~~ is the ~~chassis constructed?~~		The chassis is based on a mobility scooter, with the main changes being:

	~~Steering? Geometry?~~		* removing the seat and replacing it with one from a drift trike
			* rear transaxle replaced with a solid (19mm 304 SS) rear axle, with a hydraulic disk brake and drive sprocket
			* handle bars converted into a steering wheel
			* steering goemetry slightly modified to give some trail, and reduced sensitivty

	~~Where are your wheels, tyres, hubs, axles from?~~

	~~How do your~~ brakes ~~work~~?		The wheels and tyres are from karts. the front wheels had their bearings replaced to match the scooters spindles. I machined adapters for the rears to bolt to the keyed rear axle.

			The thrtotle and brakes are actuated by pedals. the pedals pull cables which turn a spring-loaded pot for the throttle, or the (hand) brake lever from the bike hydraulic brake.

			The bodywork is PVC tube covered in heat-formed recycled ABS sheet, and vinyl wrapped. The bumpers are ~70mm HDPE water pipe, also heat bent to form the rounded corners.


			Build videos:

			https://www.youtube.com/watch?v=_2zzuY2yD6Q

			https://www.youtube.com/watch?v=Uy0oinC1whU

			https://www.youtube.com/watch?v=M5zO_7-MICA

			https://www.youtube.com/watch?v=xP7fHLw0Fgw

	{\|style="margin: 0 auto;"		{\|style="margin: 0 auto;"
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	Source: https://vevor.co.uk/brushless-dc-motor-c_11227/48v-1800w-brushless-motor-controller-throttle-grip-powerful-quad-p_010700081791		Source: https://vevor.co.uk/brushless-dc-motor-c_11227/48v-1800w-brushless-motor-controller-throttle-grip-powerful-quad-p_010700081791

	~~Details of~~ chain and ~~gear ratio?~~		The reduction is 13:80 with 6mm chain. The chain's certainly strong enough, but quite sensitive to misalignment, and keeps coming off, especially in reverse...

	[[File:RuleZeroMotor.jpeg\|thumb\|right]]		[[File:RuleZeroMotor.jpeg\|thumb\|right]]
Line 64:		Line 81:

	==BOM==		==BOM==
	~~{{^\|Generate tables here -~~ https://~~www~~.~~tablesgenerator~~.com/~~mediawiki_tables}}~~		BOM for original build: https://docs.google.com/spreadsheets/d/13LH8uYXNQv7zIFvCdWGZtBPLQ-ZO0K0W6goraVPJs_k/edit?usp=sharing
	~~{\| class~~=~~"wikitable"~~
	\|-
	~~! Item~~
	~~! Cost~~
	~~! Total~~
	\|-
	~~\| Motor~~
	~~\| £xx~~
	~~\| £xx~~
	\|-
	~~\| Wheels~~
	~~\| £xx~~
	\|
	\|-
	~~\| ...~~
	~~\| ...~~
	\|
	\|}

	{{clear}}		{{clear}}

Cstubbs: /* Awards */

2024-10-29T12:33:19Z

Awards

← Older revision		Revision as of 12:33, 29 October 2024
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	==Race Results==		==Race Results==
	{{VehicleResultsTable}}		{{VehicleResultsTable}}
	~~{{clear}}~~

	~~==Awards==~~
	*Scrumpy Cup 2023
	**3rd place Moxie.
	~~...~~

	{{clear}}		{{clear}}

Cstubbs at 12:33, 29 October 2024

2024-10-29T12:33:08Z

← Older revision		Revision as of 12:33, 29 October 2024
Line 57:		Line 57:
	Great on two wheels!		Great on two wheels!

			{{clear}}

			==Race Results==
			{{VehicleResultsTable}}
	{{clear}}		{{clear}}

imported>Cstubbs at 10:50, 15 October 2024

2024-10-15T10:50:30Z

← Older revision		Revision as of 10:50, 15 October 2024
(No difference)

imported>Cstubbs at 10:50, 15 October 2024

2024-10-15T10:50:30Z

← Older revision		Revision as of 10:50, 15 October 2024
Line 8:		Line 8:
	\|ESC= Vevor?		\|ESC= Vevor?
	\|Battery=??		\|Battery=??
	\|~~Gearbox~~=??:?? Chain		\|Transmission=??:?? Chain
	\|Contact=@MarkMellors		\|Contact=@MarkMellors
	}}		}}

imported>Cstubbs at 22:07, 16 July 2023

2023-07-16T22:07:37Z

← Older revision		Revision as of 22:07, 16 July 2023
(No difference)

imported>Cstubbs at 22:07, 16 July 2023

2023-07-16T22:07:37Z

← Older revision		Revision as of 22:07, 16 July 2023
Line 31:		Line 31:

	{\|style="margin: 0 auto;"		{\|style="margin: 0 auto;"
	\| [[File:~~Cybr_trk_wood_chassis~~.~~jpeg~~\|thumb\|alt=Wooden chassis]]		\| [[File:Placeholder.jpg\|thumb\|alt=Wooden chassis]]
	\| [[File:~~Cybr_trk_wood_body~~.jpg\|thumb\|alt=Wooden body]]		\| [[File:Placeholder.jpg\|thumb\|alt=Wooden body]]
	\| [[File:~~Cybr_trk_steering~~.jpg\|thumb\|alt=Steering components]]		\| [[File:Placeholder.jpg\|thumb\|alt=Steering components]]
	\|}		\|}

Line 51:		Line 51:

	==Other Features==		==Other Features==
	[[File:~~Cybr_trk_trailer~~.jpg\|thumb\|right]]		[[File:Placeholder.jpg\|thumb\|right]]
	Sound?		Sound?
	Lights?		Lights?

imported>Cstubbs: /* Powertrain */

2023-07-12T17:24:57Z

Powertrain

← Older revision	Revision as of 17:24, 12 July 2023
(No difference)

imported>Cstubbs: /* Powertrain */

2023-07-12T17:24:57Z

Powertrain

← Older revision		Revision as of 17:24, 12 July 2023
Line 45:		Line 45:
	Details of chain and gear ratio?		Details of chain and gear ratio?

	~~{\|style="margin: 0 auto;"~~		[[File:RuleZeroMotor.jpeg\|thumb\|right]]
	\| [[File:RuleZeroMotor.jpeg\|thumb\|~~alt=Motor and chain~~]]
	\|}