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Old 01-08-2015, 10:25 AM
  #19456  
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Hello everyone,

Happy New Year!

We have updated the Tamiya TCS web page to reflect the tweaks to the TCS rules for 2015. Fear not! There have been no draconian sweeping changes. Instead we have made some minor tweaks to reflect new products that have been released. I have also addressed a few issues that came up during the 2014 season.

You may view the updated 2015 rules here: http://www.tamiyausa.com/tcs/rules.php#.VK7J6yvF98E

You may view the rules on the page or you may click the link that allows you to download the PDF file. The PDF file will prove easy for you to see what tweaks have been made as I have highlighted what I changed in YELLOW.

Items addressed:

1. Honda NSX bodies
2. Tire Glueing
3. Internal Drive ratios between chassis platforms
4. Modifications to drive train areas to fit gears

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Old 01-08-2015, 10:38 AM
  #19457  
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Fred, Is the 419 legal for GT-1? I assume so.
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Old 01-08-2015, 11:26 AM
  #19458  
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So no NSX and no tb03 gears in a tb04? oh no... back to the drawing board. What I can't even file a big hole so I can gear my car at 2.0? oh no!
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Old 01-08-2015, 11:30 AM
  #19459  
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I'm foggy still on a TB-03 modified to take:

a) a square lipo (this applies to TA05 as well I think?)
b) a TB04 rear gear diff

can we get a yes/no on those two?
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Old 01-08-2015, 11:36 AM
  #19460  
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a) should be good
b) no no if you follow the new rule.
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Old 01-08-2015, 11:47 AM
  #19461  
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Why wouldn't a TB04 gear diff be allowed in a TB03? It doesn't change the ratio since you are still using the 39T ring gear.

Is there an easy way to identify the NSX bodies by year?
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Old 01-08-2015, 12:10 PM
  #19462  
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Originally Posted by Jethroz
Why wouldn't a TB04 gear diff be allowed in a TB03? It doesn't change the ratio since you are still using the 39T ring gear.
Similar to how a square lipo pack doesn't fit in a TB03/TA05 without 'slight modification', the TB04 gear diff doesn't fit in the TB03 gearbox without 'slight modification' (but much less slight than for battery).

I'm a lazy mechanic, so less ball diff maintenance. Internal ratio would remain the same.
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Old 01-08-2015, 12:42 PM
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Originally Posted by torg
Similar to how a square lipo pack doesn't fit in a TB03/TA05 without 'slight modification', the TB04 gear diff doesn't fit in the TB03 gearbox without 'slight modification' (but much less slight than for battery).

I'm a lazy mechanic, so less ball diff maintenance. Internal ratio would remain the same.
I run square lipos and a TB04 gear diff in my TB03 and haven't had to perform any modifications to the original design of the car to make them work. I did cut off the ends of the front IFS brace as a convenience so gauges wouldn't bind on them during setup.

Square Lipo - No grinding

The TB04 diff won't drop in to the TB03 as the shaft sticks out too far. I just moved some shims around to have the rear shaft ride as far forward as possible. It still slightly touched the housing of the diff, but not enough to bind. Car rolls as free as any other TB.
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Old 01-08-2015, 01:23 PM
  #19464  
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TA05 IFS-R (#49491) came with the 37/18 gearing in the kit.


We always dremeled our 05 and 03 chassis with square Lipos, otherwise it was pretty difficult to securely hold the battery with Tamiyas strap system.

Last edited by Core Creations; 01-08-2015 at 01:33 PM.
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Old 01-08-2015, 01:26 PM
  #19465  
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Some quick clarifications guys...

1. We have always allowed the TB-03 and TA-05 tub chassis to be ground down so your square LIPO batteries fit. This is still in effect.

2. Only the NEW NSX Concept GT body may be used for TCS GT classes: http://www.tamiyausa.com/items/radio...ncept-gt-58598

3. Both the TCS regional race at Tamiya America and the Nationals will have modified layouts so all out horsepower is minimized to be competitive.
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Old 01-08-2015, 01:54 PM
  #19466  
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I updated the website to reflect the TA-05 IFS-R
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Old 01-08-2015, 03:26 PM
  #19467  
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Originally Posted by torg
Similar to how a square lipo pack doesn't fit in a TB03/TA05 without 'slight modification', the TB04 gear diff doesn't fit in the TB03 gearbox without 'slight modification' (but much less slight than for battery).

I'm a lazy mechanic, so less ball diff maintenance. Internal ratio would remain the same.
Bull. The transmission case is the same.
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Old 01-08-2015, 03:31 PM
  #19468  
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Fred

Last years Gt2 class winner used a tb04 gear diff with tb03 gears and tb03 gear ratio's. Is it legal to keep the same ratios and use the gear diff in my tb03 this year ? I did not have to modify anything to get it to fit.

PS. The new NSX body is not available anywhere. Why are we outlawing a body that most racers own ( 2007 and older nsx body)
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Old 01-08-2015, 03:48 PM
  #19469  
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Not to be grandiose, but I can make any transmission and any gearset work, and work properly, be free, and operate quietly.

In my experience, I am the exception; most users can't.

Before my response to people who had problems (re all of them) was to point out what parts played nice with what other parts. And they aren't all the same.

Unless someone is really willing to be dedicated to it, the TB04 is effectively toasted, no matter what changes the make at Aliso. Everyone was smoked off the corner. The chassis handles fine.
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Old 01-08-2015, 03:52 PM
  #19470  
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Originally Posted by lbckevin
Fred

Last years Gt2 class winner used a tb04 gear diff with tb03 gears and tb03 gear ratio's. Is it legal to keep the same ratios and use the gear diff in my tb03 this year ? I did not have to modify anything to get it to fit.

PS. The new NSX body is not available anywhere. Why are we outlawing a body that most racers own ( 2007 and older nsx body)
The TB03 ring gear mounted to the TB04 gear diff maintains the same internal ratio. It is a direct replacement of the ball differential using the TB03 ring gear (51255) mounted to the TB04 gear differential housing (51549).

The NSX outlaw is a bummer to me as I managed to get a few of them off a Hong Kong website and, until today, thought I was good for the next few seasons on bodies. Guess it's time for the 458 to become the new NSX.
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