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Tamiya TB Evo 8

Old 12-02-2022, 05:20 AM
  #91  
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Originally Posted by gene465 View Post
Can the car be set up so the battery be mounted on either side? Anyone know?
If the motor position is forward, the battery will be mounted on the right side, and if the motor is in the back position the battery is on the left.
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Old 12-02-2022, 03:18 PM
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Raced mine tonight, brilliant first run out.

Car had plenty of pace, loads of grip, loads of steering, a good starting point.

I'll be making a few changes next week, but it was no slower than my 419xr and can see the potential.
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Old 12-22-2022, 08:19 AM
  #93  
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I found the car had a little too much flex for my taste. I will test this hopefully next week.

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Old 12-29-2022, 01:59 AM
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Originally Posted by zuqbu View Post
I found the car had a little too much flex for my taste. I will test this hopefully next week.
Looks good that, i was hoping somebody might release a part similar In carbon or alloy to take out some of the flex.

It's works fine on my local track which is relatively low grip, but i can imagine it might cause issues for people running om the really high grip black carpet.
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Old 12-29-2022, 09:53 AM
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Originally Posted by hipwell View Post
Looks good that, i was hoping somebody might release a part similar In carbon or alloy to take out some of the flex.

It's works fine on my local track which is relatively low grip, but i can imagine it might cause issues for people running om the really high grip black carpet.
I agreed with you, From where I can buy it?
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Old 12-29-2022, 01:31 PM
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Originally Posted by zuqbu View Post
I found the car had a little too much flex for my taste. I will test this hopefully next week.
Originally Posted by hipwell View Post
Looks good that, i was hoping somebody might release a part similar In carbon or alloy to take out some of the flex.

It's works fine on my local track which is relatively low grip, but i can imagine it might cause issues for people running om the really high grip black carpet.
Originally Posted by nathanlyan View Post
I agreed with you, From where I can buy it?
It wont effect the flex if those vertical pieces are not free floating inside the bulkhead mounts.
Torsionally its flexing along the vertical carbon and for/aft its stiff.

The flex is the benefit of the vertical top decks. If you want to limit the flex you'll be better sourcing flat top decks.
Possibly doubling up on the vertical pieces may help. Run one on each side of the bulkheads.
You could then cross drill holes for shims/braces to adjust flex.
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Old 12-30-2022, 12:20 AM
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Originally Posted by Robbob View Post
It wont effect the flex if those vertical pieces are not free floating inside the bulkhead mounts.
Torsionally its flexing along the vertical carbon and for/aft its stiff.

The flex is the benefit of the vertical top decks. If you want to limit the flex you'll be better sourcing flat top decks.
Possibly doubling up on the vertical pieces may help. Run one on each side of the bulkheads.
You could then cross drill holes for shims/braces to adjust flex.
The torsional flex is very desired, agreed, and I am trying to keep it with my modification but there is a lot of longitudinal flex in the car by default, so much that it's already bending from it's own weight. If you measure ride height at the bulkheads compared to the middle of the chassis with stock setup you can see differences of up to 1mm.
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Old 12-30-2022, 04:32 AM
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I was very happy with the "bridge" modification – the car handled great and responded better to setup changes as well. High grip indoor carpet, mind you. I have now gone from 3D printing to a carbon CNC version:



Originally Posted by nathanlyan View Post
I agreed with you, From where I can buy it?
I have an AutoCAD file I used for the carbon modification, I can send it to you. I ordered it cut from 2mm carbon sheets.
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Old 12-30-2022, 05:13 AM
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Hi I am going to build my kit with a rear motor set up, most have gone for the mid or front motor set up, would anyone be interested to sell me their rear motor carbon fiber pieces, please pm me I want to buy 2 sets, also if some one wants to trade me a set for my front motor carbon pieces, My theory is by adding more bracing on top of will take the flex out, please pm if you want to trade for a set or sell me a set thanks
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Old 01-06-2023, 08:56 AM
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Anyone have an aluminum chassis in the works?
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Old 01-06-2023, 06:43 PM
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My version 1 top deck solution. Ill test it back to back versus stock Sunday on our carpet track.


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Old 01-08-2023, 06:41 PM
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First runs today. Black carpet - medium grip at best. I ran it in VTA back to back with a reasonably well sorted TRF419XR. With kit setup, the Evo has much less lean. The suspension feels stiffer even with the same oil/springs as the 419. On the track they definitely feel different. The Evo feels more aggressive on initial turn in then it’s neutral through the rest of the corner. My 419 has great turn all the way through the corner. I found myself flicking the Evo more to get it to throw more weight and finish the corner. After some wheel time I adjusted my entrance and I was able to get pretty consistent with it. Within just a few minutes it was matching my 419. Where it lacked mid corner rotation, it made up for it on chicane style corners with its initial aggressiveness. It clearly makes time up in different places to the 419 and believe it absolutely has more potential. It’s a great car and I have high hopes with a little tuning!
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Old 01-13-2023, 03:04 PM
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What setup have you tried so far? Im also on medium grip carpet, I struggled tonight, the car feels really twitchy and wants to grip roll all the time.

I widened the front from the kit setup D to E, which tamed it a little, but it was still nearly wanting to roll. I always ran g blocks on my 419xr, so I'm thinking of going even wider on the evo, maybe F or G to tame the front down a little.

Also droop, measuring the traditional way I was running 4.5 on the rear and 5.5 on the front, but I feel like it could do with some more, possibly 6 front 5 rear.

I think the biggest issue is all the flex around the spur gear.
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Old 01-15-2023, 06:55 PM
  #104  
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Originally Posted by zuqbu View Post
I was very happy with the "bridge" modification the car handled great and responded better to setup changes as well. High grip indoor carpet, mind you. I have now gone from 3D printing to a carbon CNC version:




I have an AutoCAD file I used for the carbon modification, I can send it to you. I ordered it cut from 2mm carbon sheets.
I have done something similar with a CF top deck brace that I had left over from my Kyosho ZX6. I feel there is simply too much for/aft flex and it will end up damaging the spur carrier bearings.

On a different topic, anyone of you find there is a lot of slop between the wheel bearings and the hub? There is like 2 degree of free play (camber) on each wheel.


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Old 01-16-2023, 07:22 AM
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Originally Posted by 200sxr View Post
I have done something similar with a CF top deck brace that I had left over from my Kyosho ZX6. I feel there is simply too much for/aft flex and it will end up damaging the spur carrier bearings.

On a different topic, anyone of you find there is a lot of slop between the wheel bearings and the hub? There is like 2 degree of free play (camber) on each wheel.

How does the car feel with the servo on the battery side like that? I had to add a good chunk of weight opposite of the servo to balance the cars steering out.

I had a brace I printed but wound up removing it and the car felt much better (on black carpet).
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