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Tamiya TRF418

Old 05-06-2014, 09:35 AM
  #961  
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I know but couldn't find it anywhere. If you have any pointers, that would be very much appreciated.
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Old 05-07-2014, 05:50 PM
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What sort of race ready weight are you guys getting with your build?

With a full size stick lipo (5600) I'm at 1315g

A full 65g under!

Gives me plenty of scope to get balance right, but first measurements it seems very neutral out of the box.

Last edited by cplus; 05-07-2014 at 08:07 PM.
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Old 05-07-2014, 09:45 PM
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Originally Posted by cplus View Post
What sort of race ready weight are you guys getting with your build?

With a full size stick lipo (5600) I'm at 1315g

A full 65g under!

Gives me plenty of scope to get balance right, but first measurements it seems very neutral out of the box.
I was at 1310g race ready with a lightweight LTC-R before sticking on 75g to make weight.
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Old 05-07-2014, 10:42 PM
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Originally Posted by 2-Bad View Post
That's very low, never heard of anyone using that low cst in a diff before in any make of car (but it maybe needed where you're racing, lol). Is this for carpet or asphalt, what motor class?
If I may, I would suggest you stick with the orange o ring (Kyosho or new Tamiya o-rings, no more leaks) and try getting more off-power steering some other way. Have you thought about adding some anti-dive, reducing your camber, or shorten your rear wheel base...
21.5 and 17.5 blinky ran on a sealed asphalt parking lot sprayed with a fruit punch/water mixture. I rebuilt it with 1000 cst using the black orings to test next time out. Like you suggested, I'll try some other methods to gain off power steering because it definitely wouldn't hurt to have some more on power steering for a few sections due to the thicker diff oil.



Originally Posted by ittjv View Post
Try the Kyosho ones. I've been using those since the gear diff came out and they don't bind at all. Also, if you're leaking from the diff gasket, I found that the rounded side needs to face in. Call me crazy, but since I started doing that no more leaks.
- Jose
Kyosho's are on the way along with some from ARC to try (if they are the right size). It only leaks from the outdrives. I green slime the diff gasket and change it every few rebuilds so it doesn't leak.
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Old 05-07-2014, 11:11 PM
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Originally Posted by dizope View Post
I was at 1310g race ready with a lightweight LTC-R before sticking on 75g to make weight.
Acting non-std on yours? Did that include any fans?

I've got a mix of aluminium and titanium screws and some other changes that don't save weight - quite surprised on the scales.
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Old 05-08-2014, 12:46 AM
  #966  
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Originally Posted by cplus View Post
What sort of race ready weight are you guys getting with your build?

With a full size stick lipo (5600) I'm at 1315g

A full 65g under!

Gives me plenty of scope to get balance right, but first measurements it seems very neutral out of the box.
Mine was also nice and underweight, the limit in the UK is 1350 so I had a little less to add to mine to make it race legal
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Old 05-08-2014, 07:52 AM
  #967  
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Does anybody know what major touring car brands bumpers are compatible with the 417/418 mounts? Is there a "preferred" bumper guys like? Being that its outdoor season its not quite as crucial but I still get nervous during occasional bad hits--the 418 bumper is pretty narrow!!
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Old 05-08-2014, 09:22 AM
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Originally Posted by cplus View Post
Acting non-std on yours? Did that include any fans?

I've got a mix of aluminium and titanium screws and some other changes that don't save weight - quite surprised on the scales.
No aluminum or titanium screws.

Savox Low Profile 1251
Tamiya aluminum servo horn
Tekin RS Gen2 (does not use a fan)
Killshot 17.5
SMC 6500's
Airtronics 92524 Receiver
R1 6v fan
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Old 05-08-2014, 04:50 PM
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Originally Posted by dizope View Post
21.5 and 17.5 blinky ran on a sealed asphalt parking lot sprayed with a fruit punch/water mixture. I rebuilt it with 1000 cst using the black orings to test next time out. Like you suggested, I'll try some other methods to gain off power steering because it definitely wouldn't hurt to have some more on power steering for a few sections due to the thicker diff oil.

Kyosho's are on the way along with some from ARC to try (if they are the right size). It only leaks from the outdrives. I green slime the diff gasket and change it every few rebuilds so it doesn't leak.
Yes I think that's a good plan!
The Tamiya black o-rings may still leak a little even with 1k oil. You shouldn't be disappointed with the Kyosho/Tamiya (orange) o-rings.
If you need help with tuning opinions, just post your full setup and I'm sure you'll get some good opinions from many people here....
Good Luck!!
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Old 05-08-2014, 06:33 PM
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Originally Posted by d16dcoe45 View Post
Does anybody know what major touring car brands bumpers are compatible with the 417/418 mounts? Is there a "preferred" bumper guys like? Being that its outdoor season its not quite as crucial but I still get nervous during occasional bad hits--the 418 bumper is pretty narrow!!
I am using the RSD bumper that is for the T4 works perfectly
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Old 05-08-2014, 10:09 PM
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Originally Posted by dizope View Post
I was at 1310g race ready with a lightweight LTC-R before sticking on 75g to make weight.
I am at 1280gr with an Xceed Audi A5 body (which is quite light) and LRP 5600 Lipo. All screws are titanium, Futaba low profile servo, and I use Xray or Corally SGX diffs which between them save 30 grams alone. Legal limit here is 1320, so I have 40 grams to play with.

One question. Using a Kimbrough servo saver (http://www.rcplanet.com//v/vspfiles/.../KIM114-2T.jpg), I don't get the full travel. I am aware the manual recommends the long heavy duty servo arm (Tamiya) but wonder if there is a better (arm) option?
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Old 05-08-2014, 10:39 PM
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The best servo saver IMO-- and the one that many (if not most) TC drivers use is the Xray ultra stiff. It uses 4 "bands" for stiffness. Better than any Kimbeough saver. Perfect length--the center hole is 18mm from center, I believethe Tamiya alloy one is only 16mm which will leave some travel on the table at least with Futaba radios.
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Old 05-09-2014, 01:44 AM
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+1 Xray Servo Saver
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Old 05-09-2014, 07:38 AM
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Originally Posted by GMartinez View Post
I am using the RSD bumper that is for the T4 works perfectly
Thank you. Going off that I would presume that standard T4 Bumpers share the same mounting pattern as 417/418 bumpers, yes?
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Old 05-09-2014, 02:55 PM
  #975  
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Hi guys

With a 96t spur what's the smallest pinion you can fit?

Thanks
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