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Kyosho Ultima RB6 & RB6.6 Car Thread

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Kyosho Ultima RB6 & RB6.6 Car Thread

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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech ForumsThread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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 06-21-2013, 08:35 AM
  #7351  
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The exotek fromt pin brace has been good to me, staying true after hits that would no doubt bend the other braces. I have had it for a while now
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Old 06-21-2013, 09:46 PM
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Originally Posted by fullsyzz
Ghea! As an added bonus, I have not bent another front hinge pin brace since switching to the Ghea piece as well.
That looks awesome until I saw the price.... Ouch!
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Old 06-22-2013, 06:47 AM
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Does the MIP top shaft for the B4 fit correctly for the RB6?
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Old 06-22-2013, 11:55 AM
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?
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Old 06-22-2013, 12:31 PM
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Team-G- Why do you want to use the B4 top shaft? If you are wanting to run the Triad slipper you need the Avid top shaft.
Last edited by skengines; 06-22-2013 at 12:50 PM.
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Old 06-22-2013, 01:05 PM
  #7356  
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Not wanting Triad. Check page 416 in the B4.2 thread.
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Old 06-22-2013, 02:36 PM
  #7357  
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Originally Posted by Team G Racing
Not wanting Triad. Check page 416 in the B4.2 thread.
I believe the Avid Triad shaft is lighter.
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Old 06-22-2013, 02:46 PM
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Originally Posted by JiuHaWong
I believe the Avid Triad shaft is lighter.
It definitely is. The AE top shaft is much heavier compared to the K and Avid Top shaft.

This is my first K 2wd buddy and I was amazed at how light it was.
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Old 06-22-2013, 04:50 PM
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I am not going for lightness. Going for acceleration. The K 2wd buggies are heavier than most other 2wd buggies IMO.
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Old 06-22-2013, 04:55 PM
  #7360  
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Originally Posted by Team G Racing
I am not going for lightness. Going for acceleration. The K 2wd buggies are heavier than most other 2wd buggies IMO.
Carry more corner speed.
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Old 06-22-2013, 05:10 PM
  #7361  
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Guys has anyone gone back to the stock 6 arms? If so what did you notice?
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Old 06-22-2013, 06:30 PM
  #7362  
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I love the RB6 so much I'm building my second RB6 for open MOD...
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Old 06-22-2013, 06:58 PM
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Originally Posted by Team G Racing
I am not going for lightness. Going for acceleration. The K 2wd buggies are heavier than most other 2wd buggies IMO.
is it not the same thing in this case?

if you try hard enough you can get it to mid 1500s. Can probably reduce further if you go the tessman route and chop the side braces
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Old 06-23-2013, 10:55 AM
  #7364  
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I have a set of V2 hubs on my car, ran them yesterday at top notch race. Only difference is press in plastic inserts for different bearing sizes

The new hangers are what is adjustable

In regards to buggy weight, I saw a 1680 gram buggy run a second a lap faster than everyone else in money stock
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Old 06-23-2013, 10:55 AM
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I have a set of V2 hubs on my car, ran them yesterday at top notch race. Only difference is press in plastic inserts for different bearing sizes

The new hangers are what is adjustable

In regards to buggy weight, I saw a 1680 gram buggy run a second a lap faster than everyone else in money stock
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