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Old 10-16-2014, 08:31 AM   #811
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@Metalnut: If you are looking for on-power steering, the most obvious change would be thicker oil in the REAR Diff.
Thicker rear diff oil will reduce off-power steering. Too much front droop perhaps? I've seen one of these cars set up for VTA practically box stock, and if anything it has too much steering...

If it were my choice to make, I'd go back to the setup that made the car oversteer, swapping the front diff for the spool. VTA success is rarely achieved with a car that's easy to drive, but YMMV...
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Old 10-19-2014, 05:02 AM   #812
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Default Evo 6

is it any good I race 21.5
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Old 10-19-2014, 07:59 AM   #813
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I ran two race nights with a spool up front now, but I also swapped to a 5000mah battery to be able to put 25g behind the battery, to offset the motor weight. The car is at the minimum ~1450g, but still about 20g heavy on the motor corner.

Edit: to clarify, I know that moving all that weight to the rear will generate way more weight transfer to the front, thus the hooking/oversteer may be a result. I'm going to play with that. I want to stick with Yokomo pink/blue springs for now and play with camber links (length and level), as well as sway bars. I think this car can be fest, it just has SO much flex in the chassis that tuning it is a challenge.

As is, though, the car is not very driveable. So, lots of work to do. I have a 5 hour tuning session today that I'm hoping will help. If not... T4 2015, here I come.
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Old 10-20-2014, 07:54 AM   #814
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The EVO6 need a harder frame.... the original frame is too soft and kill corner speed on Hi traction carpet !!! I worked hard on mine but the result was not as good has i want ! i put the car on a shelf and i bought a used awsomatix A700 with EXL frame for 250$
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Old 10-20-2014, 09:36 AM   #815
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The EVO6 need a harder frame.... the original frame is too soft and kill corner speed on Hi traction carpet !!! I worked hard on mine but the result was not as good has i want ! i put the car on a shelf and i bought a used awsomatix A700 with EXL frame for 250$
Right, the flexibility is a problem. I ran the EVO at a different track yesterday, still CRC HD2 carpet but newer and less sticky. Traction was good and the EVO flew around the track really well. It's just that on my home track carpet the traction is WAY stickier and that makes things a lot worse.

Anyone find ways to stiffen this car up? A track mate suggested I try using two top decks, which sounds plausible.
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Old 10-20-2014, 10:51 AM   #816
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I think you should try to add a carbon tube, just as we were used to do on the TC3


source: OverRc

In fact it depends if you are experimenting problems with flexion or torsion...
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Old 10-20-2014, 01:06 PM   #817
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Well, the EVO already has a top deck and so it's torsion that's the problem. The double top deck idea could help with that... I think. The torsion seems to generate a ton of grip, so much so that traction rolling and scrubbing speed are an issue on our super sticky carpet.
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Old 10-20-2014, 01:53 PM   #818
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You might try the double top deck. We used to do that with the HPI Pro4 on foam tires before thicker chassis plates were available.
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Old 10-20-2014, 03:45 PM   #819
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You might try the double top deck. We used to do that with the HPI Pro4 on foam tires before thicker chassis plates were available.
I think I'll try that after I play with springs some more. Yokomo pink/blue works well on medium grip carpet, but on high grip I'm going to try green/yellow. I can't find any actual lb/inch figures for the Yokomo springs, so I'm just going up based on their chart.
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Old 10-20-2014, 05:52 PM   #820
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Hth...
Attached Thumbnails
Tamiya TB Evo 6-rsd_universal_spring_chart.jpg  
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Old 10-20-2014, 08:14 PM   #821
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Hth...
I'm not sure what you're pointing out... that the Yokomo yellow seems harder than the pink?

I've used the RSD chart before and this is one result that confuses me. I would hope that the yellow is stiffer than blue, and that the green is stiffer than pink, like their chart suggests.

The other option I have is to try HPI Pro4 springs. Most people seem to like silvers all around, so I was going to try golds all around for our super sticky carpet, just to see how the car behaved.

I also have a full set of Spec-R springs, so that's an option.
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Old 10-20-2014, 08:58 PM   #822
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I'm not sure what you're pointing out... that the Yokomo yellow seems harder than the pink?

I've used the RSD chart before and this is one result that confuses me. I would hope that the yellow is stiffer than blue, and that the green is stiffer than pink, like their chart suggests.

The other option I have is to try HPI Pro4 springs. Most people seem to like silvers all around, so I was going to try golds all around for our super sticky carpet, just to see how the car behaved.

I also have a full set of Spec-R springs, so that's an option.
I'm not pointing out anything. Just offering up information. Isn't that what the interweb is for?
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Old 10-20-2014, 11:14 PM   #823
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I'm not pointing out anything. Just offering up information. Isn't that what the interweb is for?
Oh, hehe, sorry, I didn't mean to come off like a chump there. I actually saved the little paper chart that comes with the Yokomo springs, so I was basing my theory on that. It is a concern that RSD tested the yellow springs as stiffer than pink.

In any case, thank you for the help
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Old 10-22-2014, 08:29 AM   #824
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a newbie Question how does this chassis handle on low to Medium asphalt outdoor tracks with a fair number of long straights & moderate radius turns?
I have an Evo III that I will be initially running in 21.5 Blinky
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Old 10-22-2014, 08:49 AM   #825
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a newbie Question how does this chassis handle on low to Medium asphalt outdoor tracks with a fair number of long straights & moderate radius turns?
I have an Evo III that I will be initially running in 21.5 Blinky
Given how much traction this car generates, I imagine it'd be really good on asphalt. Geared properly it is also very fast.
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