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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech Forums Thread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
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Last edit by: tobamiester
RB6.6 Kyosho America Product Page: http://www.kyoshoamerica.com/ULTIMA-...T_p_24505.html

RB6.6 Manual http://www.kyosho.com/jpn/support/in...A_RB6_6_IM.pdf

RB6.6 Kyosho Youtube https://www.youtube.com/watch?v=vW_sR667utY

MSRP $639 MAP $399.99

-------------------------------
New RB6.6 parts (compared exploded views, prices and links are Kyosho America):

Chassis:
  1. Main chassis - UM731 - $125.99
  2. Side guards - UM732 - $9.99

Battery Holder:
  1. Battery plate - UM733 - $8.99
  2. Battery foam - UM741 - $7.99

Rear Bulkheads:
  1. MM3 and Laydown - UM740 - $9.99
    • MM3 bulkhead
    • Laydown bulkhead
    • Swaybar Holders

3 Gear Transmission (MM and RM):
  1. Transmission - UM734 - $10.99
    • transmission cases
    • spacers
    • caps
    • plastic FR & RR suspension hangers

  2. Gear Cover - UM735 - $6.99

Laydown Transmission (3 and 4 gear possible):
  1. Transmission - UM736 - $10.99
    • transmission cases
    • spacers
    • caps
    • required extra hardware
    • pastic FR suspension hanger

  2. 40T idler - UM737 - $6.99
  3. Motor plate - UM738 - $18.99
  4. Gear cover - UM739 - $6.99

Body:
  1. Blade body - UMB05 - $27.99

Optional Parts:
  1. Lightweigt Blade body - UMB05LW - $31.99
  2. Aluminum FR suspension hanger - UMW705B - $28.99 (may be able to file UMW705 to fit)
  3. Brass FR suspension hanger - UMW725B - $30.99 (looks more different than UMW725..someone confirm?)

Typical Upgrades for new RB6.6 Buyers

UMW701 Aluminum Steering Plate (RB6)
UMW702 Aluminum Crank Arm (RB6)
UMW704-0 V2 Aluminum Rear Hub Set(0/RB6)
UMW705B Aluminum Rear Sus. Holder (RF/RB6.6) or brass UMW725B
UMW707 Aluminum Rear Sus. Holder (RR-Mid)

Nice to have:

UMW723 Aluminum Front Sus Block (Type B/10g/RB6/RT6/SC6).


Aftermarket Parts:

Front Wing: https://www.prolineracing.com/perfor...mount-alum-rb6

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Old 11-02-2015, 12:12 PM   #12676
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This is with a lightweight shorty pack....
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Old 11-02-2015, 12:16 PM   #12677
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Have mine laid out the same way but this past weekend I moved the battery back under the waterfall almost against the motor. Made a world of difference for me. Local track gets really slick by the end of the day. Plus it's getting cold.

Would love to see some center of gravity measurements.
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Old 11-02-2015, 12:18 PM   #12678
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Quote:
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This is with a lightweight shorty pack....
HOLY SMOKES!! That is freakin sweet!
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Old 11-02-2015, 12:19 PM   #12679
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Don't mind my rats nest or wires, this was when I first built the car battery inline with the same lightweight pack. ...
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Old 11-02-2015, 12:21 PM   #12680
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are those the G Force scales? I want to get a set
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Old 11-02-2015, 12:24 PM   #12681
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Quote:
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are those the G Force scales? I want to get a set
It's actually the skyrc scale, but they are exactly the same...
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Old 11-02-2015, 12:38 PM   #12682
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Quote:
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Don't mind my rats nest or wires, this was when I first built the car battery inline with the same lightweight pack. ...
That's pretty much my layout but I have the front battery strap the other way with a foam block.
What keeps the battery from moving side to side when you reverse the strap like that?

Seems like I've read 60/40 weight balance somewhere before.
I would think you could measure wheelbase and draw a line at 40% in front of the rear axles and the car should balance on that point.
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Old 11-02-2015, 01:01 PM   #12683
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Quote:
Originally Posted by oPAULo View Post
That's pretty much my layout but I have the front battery strap the other way with a foam block.
What keeps the battery from moving side to side when you reverse the strap like that?

Seems like I've read 60/40 weight balance somewhere before.
I would think you could measure wheelbase and draw a line at 40% in front of the rear axles and the car should balance on that point.
The waterfall kept the battery from moving side to side.. since that photo I've changed the battery layout, I'll post a pick when I get my car converted back....
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Old 11-02-2015, 03:43 PM   #12684
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Quote:
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are those the G Force scales? I want to get a set
Yes you do, it rocks...

I would corner balance my cat if she would just stay
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Old 11-03-2015, 04:39 PM   #12685
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Opinions on the avid triad slipper setup?

6.5, foam tire, carpet.

Traction is never an issue, not grenading the gearbox is.
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Old 11-03-2015, 05:22 PM   #12686
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Quote:
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Opinions on the avid triad slipper setup?

6.5, foam tire, carpet.

Traction is never an issue, not grenading the gearbox is.
I run it on 2 cars. Love it. Many runs between service. Holds the setting a long time. Doesn't fade in a 10 minute main.
Sometimes medium traction but usually low traction though so....ya.

I do honestly believe the MIP pucks make the drivetrain last longer though. Only wasted tranny gears one time and that was after the diff got crunchy and I re-used all the gears. Right at 100 runs. Now I replace all the gears with a diff rebuild and set it and forget it.
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Old 11-03-2015, 08:09 PM   #12687
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Light weight battery in line all the back against the motor...
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Old 11-03-2015, 08:10 PM   #12688
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Old 11-03-2015, 08:42 PM   #12689
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Quote:
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Light weight battery in line all the back against the motor...
Haha, just noticed I'm not cross balanced... just put it back and didn't adjust shock preload lol.
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Old 11-03-2015, 10:50 PM   #12690
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Does anyone know the antisquat degree if the rear toe block had no spacer below it and the front had .5mm shim?
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