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Team Associated B6.4 and B6.4d

04-20-2022, 06:36 PM - Wikipost

R/C Tech ForumsThread Wiki: Team Associated B6.4 and B6.4d

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Last edit by: Kraig

B6.3 / B6.3D and B6.4 / B6.4D Helpful Posts

B6.4 and B6.4D specific parts release list.
https://img2.associatedelectrics.com...Parts-List.pdf

Team Associated 1/10th Shock Length Quick Reference Chart
https://www.rctech.net/forum/showpos...&postcount=955

How to measure Shock Shafts
https://www.rctech.net/forum/showpos...&postcount=956

Reference Guides (courtesy of Ray Munday and Roger M.):

What is the difference between 2 gears and 4 gears in the gear diff?
Please read these posts by Roger M.

Maybe this has been answered but what are the little orings in diff do for tuning?
Please read these posts by Roger M.

Information on the rear axles and the different length dog bones from Roger M.

The 0 (option) and +2 (kit) axles are for using different length driveshafts with the different arm lengths

Kit +2 axles

73mm arms wih 67mm driveshafts
75mm arms with 69mm driveshafts

Option 0 axles

73mm arms with 65mm driveshafts
75mm arms with 67mm driveshafts

Why would you want to change the driveshaft length?
It is essentially to do with the fact that a drive joint will want to run straight under power and the position of that joint (the pin through the CVA joint into the axle).
The further that CVA joint pin is inboard of the lower hub hingepin (assuming you're running fairly typical outer link positions) the more bind you will generate in the suspension as the drive joint tried to straighten under power, this extra binding will 'stiffen' the suspension as it adds load on top of that from the weight transfer on the car.
Conversely the the nearer the CVA joint pin is to lower hub hinge pin the less bind and thus freer suspension movement.

When would you want to change this?

Basically on bumpy tracks, tracks with inconsistent grip or lower grip you want the suspension to be as free to move as possible so that you get the full benefit from the shock and roll centre tuning, also the car feels like it has more grip in the areas where you go on/off/on the gas.
To this end you will be running the longest possible dog bone you can for the arm length, hence why the +2 axles are in the kit.

On smooth super high grip tracks (EOS / CRC carpet for example) running a shorter dogbone will feel like it takes grip away from the rear as you get on power, aiding late corner rotation and reducing the on-power understeer that often plagues tight carpet tracks.
The only time I would run the 0 axles is with 67mm dogbones on 75mm arms and only then when I wish I could get let rear toe than the 1deg minimum we can get from the pills we have (actually I had custom pill made so I can get 0deg rear toe for those types of tracks but ...)

What are the handling differences between the 73 and 75mm arms.
Brief explanation from RogerM (thanks!)

The arm length effects the roll centre and more significantly the roll centre migration as the car rolls in the corners.

Shorter rear arms will encourage more tire loading so more grip as the car rolls, great for lower grip surfaces but on high grip surfaces they can stall the rotation mid corner costing corner speed. They can also make the car feel more reactive which is good when a low grip level makes the car feel less reactive so making it harder to place in technical sections.

Long rear arms the opposite, car will rotate more freely for more corner speed but won't generate as much side-bite so mid/late corner will be reduced. Make the car feel naturally lazier which is great on high grip surfaces as it makes the car easier to drive overall.

So the long Vs short rear arm is just like the flat Vs gullwing front arm, all about the grip level from the surface and how technical the track layout is.

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09-13-2023, 12:22 PM

#1156

function>form

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Any of you guys experiment with 4wd front tires on 2wd buggy? specifically silver smoothies....

09-13-2023, 01:46 PM

#1157

BigBuckORamma

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Quote:

Originally Posted by function>form

Any of you guys experiment with 4wd front tires on 2wd buggy? specifically silver smoothies....

The 2WD smoothie is already so wide, there is almost no difference in going to the 4WD tire. The inserts are the same.

09-14-2023, 12:50 AM

#1158

Lonestar

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Quote:

Originally Posted by BigBuckORamma

If you already know the track you are going to run at, go talk to the folks at the track, and see what their set ups are. And go from there.

There is no standard setup on the 6.4 that is universally OK everywhere. And what works at one persons track, wont always work at yours. Especially with the Schumacher tires.

Quote:

Originally Posted by Alexv2024

Well you've got a unique place to race, so its hard to get setup advice. Im a dirt guy in the states so I have no idea. Best thing to do is find locals at the track and see what are the required parts and setup changes. Make sure you do that before you go because if its tight and technical you might want the shorter dirt chassis. But there is no consensus on 13mm shocks yet, and your conditions will be unique for sure. So again locals will have a better starting point.

Quote:

Originally Posted by MrLean

Definitely use the 13mm shocks.

As for setups, I'd check these two resources and look for tracks similar to yours:

https://site.petitrc.com/setup/assoc...p5L9f6QUWEqnk0

https://www.cmldistribution.co.uk/setup-sheets

Thanks folks. There is no setup "database" for our track because it isn't permanent and it only hosts 4 races a year during the winter season. AE is not the car that people run there anyway...

Was just being cheeky. I appreciate you guys chiming in

09-16-2023, 11:32 PM

#1159

5tone

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Join Date: May 2015

Location: france

Posts: 178

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Quote:

Originally Posted by Lonestar

Hi Folks, I'm gonna pull the trigger on a b6.4. For now, I'll run indoors, mod, tight & technical layout, mixed low-grip carpet and polished surfaces, with all kinds of features on the track, whoops, small jumps, bigger jumps - always schumacher tires.

What's the consensus on pistons/springs for this car and its still-new 13mm shock these days? I understand there are 2mm thick, 2.5mm thick, then some people run 3 holes etc... Please help me make sure I place my order properly in one go as I'm going to order and build this all on crash timings...

thanks in advance,
Best regards,
Paul

Hi Paul,
doesn't race anymore at ERMC, but I'll suggest starting with 2x1.7/2x1.8 in 2mm
also my personnal choice would go for a short chassis on this small technical track.

cheers mate.

09-17-2023, 03:17 AM

#1160

BuggyFan21

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Were there any new fancy bits and upgrades pictured on the AE cars at the Worlds?

09-17-2023, 05:29 PM

#1161

jonski

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Quote:

Originally Posted by BuggyFan21

Were there any new fancy bits and upgrades pictured on the AE cars at the Worlds?

Didn’t look like it.

09-17-2023, 07:37 PM

#1162

microracer24

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I need a setup for a tight, bumpy, medium grip turf track. Thanks!
edit: forgot to say 17.5

Last edited by microracer24; 09-17-2023 at 07:50 PM.

09-17-2023, 08:45 PM

#1163

edman4523

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Join Date: May 2012

Posts: 64

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I'm looking for the MOD puck system. They are out of stock from MOD for a few weeks. Does anyone know where there might be one in stock.

MOD AE B6.4/.3 LIGHTWEIGHT GEAR DIFF PUCK SYSTEM 69MM BONE / 73/75 MM ARM COMPATIBLE #21535

09-18-2023, 04:03 PM

#1164

Kaspurr84

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Join Date: Jan 2023

Location: Huntsville, AL

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What is the best 3rd party battery tie down solution for the B6.4?

09-18-2023, 05:15 PM

#1165

Silverbullet555

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Quote:

Originally Posted by microracer24

I need a setup for a tight, bumpy, medium grip turf track. Thanks!
edit: forgot to say 17.5

go to ae website
E

09-18-2023, 05:43 PM

#1166

microracer24

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Quote:

Originally Posted by Silverbullet555

go to ae website
E

I did. There is only one turf setup. Except it isn't turf or medium grip as the description says. It's for very high grip surface. So yea still looking...

09-18-2023, 05:51 PM

#1167

Kam313

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Join Date: Jan 2023

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Quote:

Originally Posted by Kaspurr84

What is the best 3rd party battery tie down solution for the B6.4?

JC net system is what I use with some O-rings. I can get to the front and back stops along with tune flex as it has double screw mounts

09-18-2023, 08:14 PM

#1168

function>form

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Quote:

Originally Posted by microracer24

I did. There is only one turf setup. Except it isn't turf or medium grip as the description says. It's for very high grip surface. So yea still looking...

petit rc

09-18-2023, 08:19 PM

#1169

artwork

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Quote:

Originally Posted by Kaspurr84

What is the best 3rd party battery tie down solution for the B6.4?

My advice...only use battery hold downs that attach on both sides of the car and go across the top of the battery in one solid piece. In my testing this is one of the most important setup things you can do to the car. Keep it simple and run the stock battery holder. Other solutions look good, but I think changes the way the car handles significantly.

09-18-2023, 08:58 PM

#1170

Silverbullet555

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Quote:

Originally Posted by microracer24

I did. There is only one turf setup. Except it isn't turf or medium grip as the description says. It's for very high grip surface. So yea still looking...

For Turf I went to petitrc because they do a lot more turf racing in Europe and the UK.

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