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Old 05-13-2017, 10:37 AM   #2311
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How are you fitting the gear diff? I tried doing it but it didn't work... do you have pic for It?
I'll try to get a pic of it today since I intended to work on my 03r anyway I did buy the car with the diffs already so I didn't do it myself, but from what I've read, there is just some grinding you need to do on the end of the prop shaft to make it fit.
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Old 05-13-2017, 04:53 PM   #2312
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How are you fitting the gear diff? I tried doing it but it didn't work... do you have pic for It?
Here you go, this is what you do to get the TB04 gear diffs in. Really simple, just grind the flat end of the prop shaft just enough so it doesn't rub on the gear diff case and still allows you to get the e-clip on.

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Old 05-13-2017, 05:43 PM   #2313
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Here you go, this is what you do to get the TB04 gear diffs in. Really simple, just grind the flat end of the prop shaft just enough so it doesn't rub on the gear diff case and still allows you to get the e-clip on.

Thanks, I should try this.
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Old 07-16-2017, 12:19 PM   #2314
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Default New to TB-03 - suspension and differentials?

Hi I all,

I just picked up a very nice TB03 from eBay. It's almost specd to a tb03R. I got a good deal on it and am really looking forward to running it alongside with my other Tamiya chassis TA05v1 and Xv-01.

From what I read, it sounds like it's possible to use a rear carbon damper stay from the tb04. Right now the chassis has a carbon Ta03 stay, but it has very wide mounting positions for the posts. I don't feel like putting another set of holes in my 3 lexan bodies since they all get swapped around between my chassis.

The question is, does the tb04 carbon damper stay fit, and secondly, is the mounting position narrower, like the rear of a ta05?

Also I was looking to replace the front spool with a gear diff. I really enjoy the fact that this car came with a spool, a front one way, and a drive shaft one way. All this racing stuff for me to exploit. But there is something about a front diff that really changes the a driving and turning characteristics.

Does anyone have the correct part numbers to piece together a gear diff from the tb04?

So far I have put together:
#51549 - diff case, bevel gears
#51554 - cup joints (steel?)
#51553 - gasket (and 850 bushings?)

Is this all I need or am I missing something?

I primarily drive my cars on the street and I love the feel and low maintenance of a high CST front gear diff. The spool just seems to scrub my wheels.

Anyway, I hope to set my car up for street TC and maybe some light street rally.
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Old 07-18-2017, 10:01 AM   #2315
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Hi I all,

I just picked up a very nice TB03 from eBay. It's almost specd to a tb03R. I got a good deal on it and am really looking forward to running it alongside with my other Tamiya chassis TA05v1 and Xv-01.

From what I read, it sounds like it's possible to use a rear carbon damper stay from the tb04. Right now the chassis has a carbon Ta03 stay, but it has very wide mounting positions for the posts. I don't feel like putting another set of holes in my 3 lexan bodies since they all get swapped around between my chassis.

The question is, does the tb04 carbon damper stay fit, and secondly, is the mounting position narrower, like the rear of a ta05?

Also I was looking to replace the front spool with a gear diff. I really enjoy the fact that this car came with a spool, a front one way, and a drive shaft one way. All this racing stuff for me to exploit. But there is something about a front diff that really changes the a driving and turning characteristics.

Does anyone have the correct part numbers to piece together a gear diff from the tb04?

So far I have put together:
#51549 - diff case, bevel gears
#51554 - cup joints (steel?)
#51553 - gasket (and 850 bushings?)

Is this all I need or am I missing something?

I primarily drive my cars on the street and I love the feel and low maintenance of a high CST front gear diff. The spool just seems to scrub my wheels.

Anyway, I hope to set my car up for street TC and maybe some light street rally.
Try using this to see what you need. This is the assembly in the manual. Should be able to get P/N's with this using the parts list in the tb04 manual.

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Old 07-18-2017, 10:14 AM   #2316
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Try using this to see what you need. This is the assembly in the manual. Should be able to get P/N's with this using the parts list in the tb04 manual.

Thanks vault boy
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Old 07-18-2017, 10:17 AM   #2317
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Thanks vault boy
No sweat, happy to help a fellow vault scavenger
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Old 07-25-2017, 09:04 PM   #2318
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Default TB03 rally

TB03 cut up and running 74mm tires. My first shaft driven 4wd chassis.

Cuts were made to the chassis to allow the steering links to clear the extra rally droop. I also cut off the over hanging IFS bracing as it was interfering with the larger tires.

Front maximum height with 24mm Tamiya slicks is 22mm, rear is more. Chatter is gone because I went back to using the original arms but shaved down the constricting arms at the hub carriers.

I know, I need some better cable management.

Motor is a HobbyWing 13.5, with HW stock spec 100amp ESC. Servo is Futaba digital.

The front is running a spool that came with the car, and I hate it, it scrubs hard. A front gear diff pieced together will cost about 1/3 of what I payed for the car. So I will deal with it for now. All in all it drives very well on the street. Dive and roll are awesome. Not as predictable as a ta05 but a little better than the xv-01. Right now it's set with 72/35 gearing in 0degree blinky. It only gets faster when I enable turbo!

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Old 08-26-2017, 06:05 PM   #2319
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Hi all,

Why is the spool so much wider than the diff and one way? What CVD length would I need for using non-spool? 46mm?
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Old 08-27-2017, 09:10 PM   #2320
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make sure you use the right holes in the drive cups, if I can remember correctly, there are 2 pairs of holes and they are offset from each other.

Im running 44mm shafts with the stock ball diffs, fits perfectly
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Old 08-29-2017, 09:13 PM   #2321
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It looks like the spool and one way I got with my car had different widths. I picked up some diffs and another one way and spool for a tb04. You can see the width of the one way drive inserts vary. The 44mm CVD is correct, but if you have narrow drive inserts you need 46mm.

I ended up using the gear diff in the front and a ball diff in the rear the car rotates very well now.

Last edited by 4roller; 08-29-2017 at 11:31 PM.
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