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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 01-13-2013, 01:23 AM   #4186
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Quote:
Originally Posted by Just1More View Post
I run my old B4 wheels for now, but Kyosho wheels are better quality. Fronts measure out the same, rear B4 Jconcepts wheels give you a 1mm narrower track width each side, so the car will be 2mm narrower in the rear only with JC B4 hex wheels. I plan on buying Kyosho wheels and sticking with those for the rigidity/quality and correct offset.
This is what I'm looking for. Thx
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Old 01-13-2013, 05:07 AM   #4187
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Ball Diff vs Gear Diff: I would really appreciate all input. I run gear diff in my TC. For my RB6, any thoughts on going to gear? - am I correct that SCT gear diff will fit? thank you
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Old 01-13-2013, 07:34 AM   #4188
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Quote:
Originally Posted by MBUCK View Post
Ball Diff vs Gear Diff: I would really appreciate all input. I run gear diff in my TC. For my RB6, any thoughts on going to gear? - am I correct that SCT gear diff will fit? thank you
you race on carpet correct ? when i used to race on carpet i always ran a ball diff as a matter of fact ball diff is usually the better choice . i will be running my car on a carpet track this coming Saturday . the only thing i will be changing is the shock oil 50 front and 40 rear i have a worn set of mc suburbs i will use .


yes the gear diff will fit if you want to use it .

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Old 01-13-2013, 07:36 AM   #4189
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[QUOTE=Cpt.America;11669425]Nope.. different wheels. Stock Kyosho wheels are money.

If you use the hexes on the B4.1 you can use the same wheels. Or am I missing something?
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Old 01-13-2013, 07:53 AM   #4190
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still waiting to see some other RB6 cars in action ? where is all the youtube videos guys .
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Old 01-13-2013, 08:18 AM   #4191
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What parts are necessary upgrades?
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Old 01-13-2013, 08:22 AM   #4192
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Aluminum rear hubs and steering rack imo as they are the only things I have broken.
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Old 01-13-2013, 08:27 AM   #4193
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Steering rack just in case, I wouldn't worry about hubs unless you have horrific crashing abilities or are racing in cold cold weather the rack is the only part I've broken that think needs the upgrade.

Go to Speedtech and look at the exotek parts.
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Old 01-13-2013, 08:28 AM   #4194
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Which spur does the kyosho uses? If it's own, what's the smaller size?
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Old 01-13-2013, 08:29 AM   #4195
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Quote:
Originally Posted by t8rtot View Post
Steering rack just in case, I wouldn't worry about hubs unless you have horrific crashing abilities or are racing in cold cold weather the rack is the only part I've broken that think needs the upgrade.

Go to Speedtech and look at the exotek parts.
Anything else from exotex that requires upgrade? How are the stock shock towers?
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Old 01-13-2013, 08:38 AM   #4196
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Do all you guys chassis have imprints at the bottom rear? If so, what's the deal?
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Old 01-13-2013, 08:43 AM   #4197
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I have the aluminum diff nut, steering rack and rear mount.. I have put on the rear mount yet however.

Stock spur is a 76.

The towers are fine and very few dented chassis have been reported.. If so, word is Kyo will replace it.
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Old 01-13-2013, 09:00 AM   #4198
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Quote:
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Which spur does the kyosho uses? If it's own, what's the smaller size?
If you are going to stick with the stock slipper setup, run Kimbrough B4 spur gears, and run the tan colored AE high torque pads.
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Old 01-13-2013, 09:06 AM   #4199
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Also, I am wanting to buy an almost new rb6. Pm me if someone has something.
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Old 01-13-2013, 09:21 AM   #4200
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@teeforb. Kyosho RB6
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