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Tamiya TRF418

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Old 12-31-2013, 07:42 PM
  #406  
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Originally Posted by JimmyMac View Post
You coming out tomorrow to race with us?
Wish I could but in the name of maintaining domestic bliss I'm spending the day with my wife... It's our wedding anniversary! LOL
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Old 01-01-2014, 09:13 AM
  #407  
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Anyone here know how to get a spare set of the TRF418 staibilsers / rods etc I want to fit them to my sons 417. Or is the 418 the first car to have these new roll bar fittings?

Last edited by Qatmix; 01-01-2014 at 12:07 PM.
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Old 01-01-2014, 12:09 PM
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Originally Posted by Qatmix View Post
Anyone here know how to get a spare set of the TRF418 staibilsers / rods etc I want to fit them to my sons 417. Or is the 418 the first car to have these new roll bar fittings?
Some spare parts was arrivals !
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Old 01-02-2014, 04:43 PM
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In general, how do you determine when to change rear diff oil to a thicker or thinner oil?

Is there a too thick or too thin setting?
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Old 01-03-2014, 01:10 AM
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I wrote about this and other settings recently on my blog

http://tchub.wordpress.com

Diff: I play with the diff a lot. I always start with 3k (kyosho) at a new track. If I have enough on power grip and entry steering then I will go up which will give more on power steering and corner speed. If the car wants to spin when you apply power or is lazy turning in then you can go down. Iíve never had much luck with less than 2k because it feels like it diffs out, but Iím sure on some tracks or in slower classes lighter oil will work
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Old 01-03-2014, 01:34 AM
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Hi Craig,

If your running blinky 21.5, what do you suggest to start for the diff oil?
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Old 01-03-2014, 03:28 AM
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Originally Posted by Fredp1 View Post
Hi Craig,

If your running blinky 21.5, what do you suggest to start for the diff oil?
If carpet I use 1K - 2K with 17.5 or 21.5
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Old 01-03-2014, 03:46 AM
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One of the tracks I run on is considered as a low grip track. It's a cement concrete track with a painted coating of some sort.
Would you use the same weight oil as used on the carpet track?
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Old 01-03-2014, 03:46 AM
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Double post

Last edited by Fredp1; 01-03-2014 at 03:47 AM. Reason: Double post
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Old 01-03-2014, 06:42 AM
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Originally Posted by Fredp1 View Post
One of the tracks I run on is considered as a low grip track. It's a cement concrete track with a painted coating of some sort.
Would you use the same weight oil as used on the carpet track?
With low grip situations I would start with 400wt shock oil instead of the typical 500wt that most are using in high traction situations. Then go from there with either dropping the shocks down a hole or two or softer springs just depending on how the car feels.
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Old 01-03-2014, 07:14 AM
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Originally Posted by CraigM View Post
I wrote about this and other settings recently on my blog

http://tchub.wordpress.com
Thanks Craig, I forgot about your notes on that blog page and I even carry them in my pit bag. Shame on me.

When you say diff out, what do you mean?

In this particular case, on a non-race day where track prep was lower than normal (sealed asphalt parking lot track), I went from 3k to 1k in an effort to stop the car from spinning out on off-power corner entry and on-power corner exit. The 1k made it way more sensitive. I didn't have time to try another oil so I stood the rear shocks up from 3 to 4 and 4 to 5. This made it better but if I got aggressive, it would still want to spin out.

This is a 17.5 blinky car. It sounds like I should put 3k or higher in but you also say thinner oil may work in slower classes... What would you suggest I try as the next step. By the way, I'm using the kit setting minus wheel shims.
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Old 01-03-2014, 12:12 PM
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Diffing out is when the diff oil is too thin and on power the inside wheel is unweighted and tries to spin in the opposite direction to the power. It makes the car continue turning or even spin. I've only noticed it with mod when running 2k or less.

Try a 2k diff for 17.5 and move the weight of the car forward to take out the aggression, so run a shorter front wheelbase and longer rear, eg 2mm F and 4mm R - and remember to change your Ackerman by the same amount
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Old 01-03-2014, 03:03 PM
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Thanks Craig, I'll give those changes a try and report back.
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Old 01-03-2014, 03:21 PM
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Craig, can you explain why when i run my tc6, i run a super light diff, 40wt(500cst) and its perfect, but the 418 guys are running such a heavy weight diff oil? 3-5k?
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Old 01-03-2014, 07:26 PM
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the ae diff doesnt spin as free as the tamiya so it doesnt require the same thickness in oil. very different between the manufactures.
for example, when i drove spec r r1, i used 5000cst oil to get the same feel as tamiya and xray diffs with 2000cst
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