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Old 08-31-2017, 07:45 AM   #1
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Default Tamiya F104 -

So, we have a F103 thread, but no F104 thread... Time to fix that.

The F104 is Tamiya's latest consumer level F1 chassis. TRF has taken over the high end chassis and really, those deserve their own thread.

Overall, it's a normal pan car. It's got a floating damper disk, a spring to carry the majority of the chassis load, and a T-bar to provide a hinge for the rear suspension.

The F104's big differentiating feature is for the first time in a Tamiya F1 car, the battery is mounted longitudinally. This makes the chassis moment of inertia in pitch, greater, and should allow the suspension to do it's work, better.

The F104 can use the F103's axles, wheels, and front suspension. I suspect it can also use the wings and bumpers from the F103.

I took mine out for it's maiden runs last night. And it was a lot of fun.

If you'd like to read a "bigger review" My writeup, is here: A Real Life Tinker Gnome: Tamiya Wolf WR1 kit. A f104w chassis car.

I have a bunch of parts coming for mine. Bearings for the front axles, carbon reinforced front suspension, and an oil filled shock. I'll take some better chassis pictures when I get those installed.

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Old 08-31-2017, 01:54 PM   #2
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So I finally got to drive the thing.

I'm running the car on "room temp" street pavement.

The car off power, pushes. Reasonably, but pushes. On power, the car is pretty difficult to deal with.

The car can break the tires loose at roughly any speed below 15mph. So acceleration is takes a lot of care not to have the back end want to chase the front.

I have the HobbyKing X-Car 45a brushed speed control. Any time I get on the brakes the car wants to come around.

Should I be using a loose diff setting as traction control to help the acceleration and braking issues?

What's a "good place" to start with for putting oil on the kingpins? How about the damper pad? I bought a RM-1 shock, and will be putting that on tonight. I have the stock fluid in it now.

I also picked up the 1.3, 1.5, and 1.8mm 3 racing t-bars to provide some tuning there.

So... what's recomended? I'm all ears.
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Old 08-31-2017, 01:58 PM   #3
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Tamiya F104 Pro!
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Old 08-31-2017, 01:59 PM   #4
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Originally Posted by Serzoni View Post
perfect thread closed
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