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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(0į/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 02-27-2015, 12:13 PM   #11761
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Tebo had this to day about it.

Something is bound up in your suspension. Take your shocks off, and give it the hang test. Hold your car on its side, in the air, with shocks off. Your arms should swing freely when you lightly rock your car. If they donít, something is bound up. If thatís not it, then your shock o-rings are swollen and tight. Rebuilding your shocks, did you put in new o-rings, or just replace the oil?
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Old 02-27-2015, 05:07 PM   #11762
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Quote:
Originally Posted by Chansharp318 View Post
Tebo had this to day about it.

Something is bound up in your suspension. Take your shocks off, and give it the hang test. Hold your car on its side, in the air, with shocks off. Your arms should swing freely when you lightly rock your car. If they donít, something is bound up. If thatís not it, then your shock o-rings are swollen and tight. Rebuilding your shocks, did you put in new o-rings, or just replace the oil?
I like that suggestion. Got the rear end fixed...was binding where the shock meets the arm (2mm screw was secured too tight). I'll try Tebo's suggested technique with the front which hasn't completely resolved. To answer your question, everything in the shock was replaced with new as well as all the geometry: arms, blocks etc. Thanks for your help.
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Old 02-28-2015, 08:27 AM   #11763
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For me I didn't replace the orings. So that could be the problem and haven't had time to check binding. Plan to do that today at the track.
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Old 03-02-2015, 02:58 PM   #11764
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? i have an rb6 on the way and need to know the rear width with tires on, i am making it an mod dirt oval and want to get an body ordered, but need to know how wide it is.
thanks mark REALLY NO ONE!

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Old 03-03-2015, 01:32 PM   #11765
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Wont have my K springs in time for the weekend. What AE or Losi spring would be simlar to a pink front spring ?

Thanks
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Old 03-07-2015, 05:47 AM   #11766
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^^^^ not sure on the springs. Xgear handle so much better than the others so I never tried them.

Is it worth trying the sideways Lipo mod? Currently I still run motor, inline shorty, esc, servo. I like it but feel I can't push it as hard as I would like on exit.
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Old 03-08-2015, 09:04 PM   #11767
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new here but what front and rear wheels work for the rb6 switching over the the 22 2.0 pile
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Old 03-08-2015, 09:13 PM   #11768
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Anything that will fit a B5.
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Old 03-08-2015, 10:06 PM   #11769
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Losi rears won't work then.
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Old 03-09-2015, 10:20 AM   #11770
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Quote:
Originally Posted by ashxxx View Post
Losi rears won't work then.
They will, but they don't give you much room for a standard wheel nut. When I use my 22 rears I use these: http://www.amain.com/jconcepts-4mm-l...lack-4/p273896
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Old 03-10-2015, 06:42 AM   #11771
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I also run the Jconcepts low profile serrated wheel nuts along with Avid HD axles which are a little longer. That combo works well and you get a full nut on the axle.
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Old 03-10-2015, 02:49 PM   #11772
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will the j concepts bellcrank work with the exotek rack
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Old 03-10-2015, 02:58 PM   #11773
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It should. Yes
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Old 03-12-2015, 02:18 PM   #11774
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UM713B. New rear arms! Check them out on the Kyosho America web site. 2 new holes!
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Old 03-12-2015, 02:27 PM   #11775
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Yup. 18mm from the sway hole I believe.
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