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Old 03-04-2009, 10:33 AM   #1
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Default New to this guys, advice please!!

Well im new to this and new here too..so Hi!

I recently purchased a Tamiya TB-02 Mercedes and have recently finished assembling it, all apart from the body.

I have tested that the radio gear works well with the servos, which it does, and the motor turns all 4 wheels.

The main battery is on charge as we speak so i can take it for a test run. However, before i do so, do any of you have any top tips for things i need to check or indeed things i may have missed?

Please remember, i am totally new to this. I used to have one of the old Mini-stocks but they were so basic in comparison.

It does sound quite noisy when running, but i think this is because it is 4 wheel drive - so many more moving parts...

Anyhow, your help will be much appreciated. Dont want it all falling apart on the first run!

Cheers

Chunk
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Old 03-04-2009, 10:43 AM   #2
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It's a Tamiya, they are foolproof for beginners (and returners). You should be fine.

The only part that might trip you up on that car is the radio gear installation (check the servo linkage and trim is set so the car runs in a straight line, and that the ESC hits full throttle, neutral and brake), and with the assembly I think that car may have ball diffs which need careful setting otherwise they may slip or not rotate freely.
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Old 03-04-2009, 10:47 AM   #3
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Quote:
Originally Posted by sosidge View Post
It's a Tamiya, they are foolproof for beginners (and returners). You should be fine.

The only part that might trip you up on that car is the radio gear installation (check the servo linkage and trim is set so the car runs in a straight line, and that the ESC hits full throttle, neutral and brake), and with the assembly I think that car may have ball diffs which need careful setting otherwise they may slip or not rotate freely.
Yeah they do have ball diffs but i never quite understand the thing about them rotating freely but not slipping . . . can you elaborate?

Cheers

Micah
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Old 03-04-2009, 10:57 AM   #4
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Basic diff assembly rules...

1. Plenty of black grease on the thrust bearing assembly.

2. Just enough silicone grease to coat the balls of the main diff.

3. Usual initial setting for the screw is hand-tight and backed off 1/8 to 1/4 turn.

Diff test...

1. Hold spur gear and one wheel on axle.

Try and turn other wheel. It should only slip after a solid amount of force has been applied.

2. Hold spur gear and turn one wheel.

Opposite wheel should rotate smoothly. Rear diff should be quite free, but not free-spinning. Front diff usually set a bit tighter.

Ball diffs are one of those things that needs a bit of experience to get the most from. One of the most common things to cause newcomers and intermediate racers problems, but once you get the hang of building and setting them they can be almost maintenance free.
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Old 03-04-2009, 11:00 AM   #5
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Noises could be coming from the gear mesh...double check your instructions for properly setting the gear mesh.
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Old 03-04-2009, 11:07 AM   #6
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Thanks for the replies guys, much appreciated. Now if only this battery would charge quicker!

Bought a Orion 4000 battery, any good?
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