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Fray Car Build

Click on the section of the topic you are interested in. This is a work in progress, anyone who wishes to contribute PLEASE do send me an email.

Preamble	I. Selecting a Chassis	II. Straightening a Chassis	III. Selecting a Gear Plate
IV. Selecting Magnets	V. Selecting a Crown Gear	VI. Selecting a Rear Axle	VII. Selecting Rear Rims
VIII. Selecting Rear Tires	IX. Selecting Front Axle and Tires	X. Selecting an Armature	XI. Selecting Pinion Gear and Shaft
XII. Selecting Top Gears	XIII. Selecting Motor Brushes	XIV. Selecting Pickup Shoe Springs	XV. Selecting Pickup Shoes
XVI. Selecting a Fray Body	XVII. Selecting a Guide Pin	XVIII. Bench Testing the Build

X. Selecting an Armature
	SECTION IMAGE
Armature Options?

Vendor	ItemCat	ItemManu	Product Code	ItemDesc	Part Image	Item Price	Qty	Fray Appr	Outof Stock
http://www.dash-motorsport.com/	Fray_Armatures	Dash	3-lam 10-ohm	T-Dash Armatures - 3 lam 10 ohms 3 Lam 10 OHM arm. This arm is the stock arm for the Mondo Grip chassis. *Due to manufacturing variances, the resistance can vary from 10 to 11.5....		$5.99
http://www.dash-motorsport.com/	Fray_Armatures	Dash	3-lam 16-ohm	T-Dash Armatures - 3 lam 16 ohms* - Fray Approved 3 Lam 16 OHM arm If you are looking for the Fray approved 3 lam 16 ohm arm, this is the one. *Due to manufacturing variances, the resistance can vary from 16 to 18....		$12.99		Yes

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2020 Fray in Ferndale Rules:

INDIVIDUAL RACING [4] -4. Only original Aurora 2 Lam TJet pancake gray armatures or Dash Motorsports 3 Lam armatures may be used for all race events, The Dash Motorsports 2 Lam armatures may be used in the team racing events. The arms must be used with their original commutator, and all of their original unmodified windings may be used. Armatures may be balanced and trued. A shim may be used between the armature and the top plate to prevent the motor windings from contacting the top plate. -5. Each armature pole is to be measured across two separate commutator segments. The AVERAGE of all three poles must be 16.0 ohms or greater at 70 degrees. This armature is LEGAL. All measurements are to be taken at the current available room (ambient) air temperature. The warming of either the commutator or the armature is not allowed before/during measuring. (The combined total ohm reading of all three armature poles must equal or exceed 48 ohms.) We have an armature that tests 16.0 on all three poles at 70 degrees. It ohms lower in cooler temperatures and will be the standard for testing arms at the event. The Hall temperature can vary between 60 to 70 degrees. -6. Only Johnny Lightning, Auto World, or Dash Motorsports Magnets may be used. The magnets may be sanded to fit the chassis. The distance between the magnets must be a minimum of .700″. This will be teched using our custom designed, specially fabricated plug.

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Balancing the Armature
Polishing the Armature Commutator
Installing the Armature

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