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RiggenHo Model Racing
Fun Kit Assembly Instructions

Introduction
This RiggenHO Fun Kit chassis is very easy to assemble. The basic chassis was designed in the 1970’s to be a very simple, straightforward high performance race car. The advantages of this chassis versus its vintage competition was the very low center of gravity and the ease with which professional hop up parts such as wheels, gears, motors and tires could be interchanged and tweaked. These features hold true today allowing you to prepare a fast, sticky, competitive race car using contemporary technology.

Preparation:
Confirm you have all the required parts. The stock RiggenHO parts are listed below but there are many hop up and replacement options such as gear sets and wheels. Assembly goes smoothly when all the required parts are in hand before assembly begins. Gear mesh should be tested prior to final assembly especially with press on wheels. To do this properly, you need to make sure the motor is operating properly. Test the motor before you begin assembly.

Parts List:

--2 piece brass chassis (chassis and shaker plate, reamed for pin style guide flag)
--Pin style guide flag with retainer tube and leads retainer clip
--TycoPro rear axle assembly with hubs and crowngear, brass spacer
--Silicon rear tires
--front axle, wheels and tires

You must provide the motor with pinion and a body!

Crown Gear Assembly
Gear mesh is critical. The RiggenHO chassis does not use a snap in rear end set up. You must install the crown gear on the axle and through the chassis at the same time. Remove the wheels and the crown gear from the axle by twisting the wheels and gears WITHOUT bending the axle. Holding the chassis upside down, insert the rear axle through the right side axle hole and slip the crown gear onto the axle with the teeth facing right, followed by the brass spacer. Press through the opposite axle hole using a gear press or hand pressure and align the crown gear on the axle in the proper location.

Prepare and Assemble Motor with Guide Flag Assembly
Install the guide flag lead wires into the brush tubes on your can motor. Use the retainer clip to keep them in place. Note the guide flag wires will be crossed when installed on the chassis which is desirable (this provides even tension on the guide flag and gently limits swivel).

The shaker plate can now be placed on the chassis with the motor retainer cutouts in front and the domes of the body mounting nibs “up”.

Snap the motor assembly onto the chassis between the chassis motor retainer uprights. The motor fits snugly and should not bend the uprights. Test your motor and drive train with a 9v battery.

Motor magnets should have the colors facing up and the guide flag lead wires should be crossed. Install the guide flag into the guide flag retainer hole from underneath and secure with the small rubber tube. Check for proper gear mesh between the motor and the crown gear. The gear should turn smoothly in both directions with no binding.

Do not continue until you have checked the gear mesh by applying power to the pick ups!

Install Rear Wheels and Tires
The stock TycoPro hubs simply twist back onto the axle. Install the slip on rear tires around the hubs.

Install Front Wheels and Tires
Install wheels by tapping with a small hammer or by using a proper wheel press with tapered insert and tap lightly, checking frequently to make sure you don’t “over-press”. Protect your wheel with a cloth or small piece of rubber while tapping to prevent scratching the wheels. O ring front tires simply stretch around the front wheel and fit in the groove for a tight fit.

Final Prep and Guide Flag Adjustments
The single most important adjustment you can make to your car is the angle and bend of your wipers (or braids). Some drivers prefer a flat alignment, other prefer a slight downward flare at the trailing end of the wiper. A light application of race oil at the front end of the arm shaft as well as at the crown/pinion joint is recommended. A lot of motor whine can be removed with this simple step!

Race!