- Tamiya TRF502X - Steering Modification -


For any 502x drivers out there that are suffering from low speed understeer, or struggling to get around tight turns, this tip is for you!

First of you, you will need the following tools:

- Hex drivers
- Dremel or sharpe Knife
First of all you will need to remove the current steering ackerman (bridge), unscrewing the two screws from the top and make sure you keep an eye on all the parts as the bearings and anti-crush sleeves are prone to being lost!

Once removed its best to also remove the front gear box and carbon top deck for ease of working. What we are going to do is turn the Ackerman bridge around, this will give you more ackerman and more steering lock to the outside wheel when cornering, hence increasing general steering.
As you can see if you eye up the bridge the opposite way around it will hit the gear box, so this is what we do. First we cut off half of the inside hole at an angle relevant to the gearbox to create clearance. Then insert the ball stud into the outside hole on the bridge and fill the inside hole with the set screw provided to strengthen, as pictured below.

We are then going to use a knife or dremel to do the same to the gear box housing, making sure to cut close to the screw, but dont actually let the screw come out the plastic.

Reinstall your bridge and check to make sure the items do not catch, then once all is ok, connect your front end back together.

Its important once this is complete to check all steering locks and trim settings are ok. Also i run 1 washer under the ball stud on the outside (bump steer washer)

I have run this setting for a number of weeks now and found it to be good, but i have changed the car to suit this change, while on dirt i found i had to adjust the rear of the car to stop it from sliding, i did this by added 60gram of Rude bits brass and shortening the wheel base to its maximum short setting.

Thanks for reading and hope this helps.

Lee Martin

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