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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 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 03-26-2013, 06:43 AM
  #5896  
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Originally Posted by nitroargi View Post
Hey guys...went testing yesterday for Greek Nationals on a new astro truck near Athens

I went with Schumacher Mini Spykes in the rear and stugger front and rear motor setup since the track is not high traction. At some point I tried some JC wheels which have deeper hex...I quess that means the rear end was narrower right?

Car felt better...is this down to narrow rear end? What's the theory here?
The offset was no different on the sets I have and measured.
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Old 03-26-2013, 06:50 AM
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Originally Posted by Cpt.America View Post
Also depends on ride height. So while its fine, and works to compare against others, it's not measuring droop.
I don't think you're understanding how to measure this. Here's a video of Adam Drake explaining it, he can do better than me. http://www.youtube.com/watch?v=H99PKqsUZjA
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Old 03-26-2013, 09:41 AM
  #5898  
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Default RCSPEEDSHOP.COM House Car

Here is the RC Speedshop.com's RB6 "House Car."

First Kyosho Kit I have ever assembled - extremely impressed with the quality, fit and finish. The shocks reputation has been confirmed in my opinion - they are money!

Can't wait to get it dirty...
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-rb6_s.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-rb6_f.jpg  
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Old 03-26-2013, 09:49 AM
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Looks god, Todd. FYI, I have heard of people having issues with transponders mounted right on the alu chassis. Can't confirm myself, just something iv heard in passing.

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Old 03-26-2013, 09:51 AM
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my transponder has no problem at all when its mounted on the chassis.
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Old 03-26-2013, 10:32 AM
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Originally Posted by Cpt.America View Post
Looks god, Todd. FYI, I have heard of people having issues with transponders mounted right on the alu chassis. Can't confirm myself, just something iv heard in passing.

Thanks - I will keep it in mind...
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Old 03-26-2013, 10:37 AM
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Anybody change to mid motor? What setup are u using? And where?
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Old 03-26-2013, 04:07 PM
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Originally Posted by MikeXray View Post
Im confused on how this works, the vts plate will not slide onto the stock shaft, unless you are modifying it.
I modified mine to work. I made it before the avid topshaft came out. U only have to grind the vts a very small amount to get it to fit. Pretty much just take off the anodizing. Sorry I thought u were doing the same.
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Old 03-26-2013, 04:17 PM
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Just a quick update on the all MIP tranny on mine. Have had 3 solid race days and 2-3 proper (5+ pack) practice days on my car. I still see no signs of outdrive/swing shaft wear. Its way better than the stockers for sure. The hexes have absolutely no wear. I am not kind on my axles I use a makita impact wrench and serrated loc nuts on all my cars.

The diff is a slight BIT notchy now but its prob my fault, I did not build it with the MIP balls but the stock kyosho balls which were in the older diff. I will pull it apart for the summer season of course.
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Old 03-26-2013, 04:24 PM
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nice.....
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Old 03-26-2013, 05:21 PM
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Originally Posted by seth556 View Post
I don't think you're understanding how to measure this. Here's a video of Adam Drake explaining it, he can do better than me. http://www.youtube.com/watch?v=H99PKqsUZjA
how did he say he measures droop.. hmmm could have sworn i said that
i'm not busting on you seth556
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Old 03-26-2013, 05:47 PM
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Originally Posted by eper View Post
how did he say he measures droop.. hmmm could have sworn i said that
i'm not busting on you seth556
Just backing you up. Don't want someone who acts like they know it all saying you're completely wrong (when you're correct).

Glad Adam Drake is on our side
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Old 03-26-2013, 06:20 PM
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I'm going to Vineland, NJ 4/6 to run 1/8 nitro and mod buggy. I was told to throw in a 8.5 motor. Can anyone recommend gearing with the stock 76t spur gear? Thanks
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Old 03-26-2013, 07:48 PM
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Originally Posted by shark2288 View Post
I'm going to Vineland, NJ 4/6 to run 1/8 nitro and mod buggy. I was told to throw in a 8.5 motor. Can anyone recommend gearing with the stock 76t spur gear? Thanks
23/76 is ballpark gearing for an 8.5 in the RB6. Run for a few laps and check your power-spread for the track.
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Old 03-26-2013, 08:04 PM
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Originally Posted by desertracerdad View Post
23/76 is ballpark gearing for an 8.5 in the RB6. Run for a few laps and check your power-spread for the track.
Thanks for the help.
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