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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 12-29-2012, 03:30 AM
  #3706  
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Has anyone else bent more than their share of the metal brace in front? I know I need to quit hitting stuff but just normal race rubbing bends these things. I'm not gonna lie I'm getting tired of replacing em......
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Old 12-29-2012, 03:42 AM
  #3707  
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Yes, never had a problem on the rb5 but these seems to get beaten up more easy me and my racebuddy have noticed that too.
Originally Posted by Ctimrun
Has anyone else bent more than their share of the metal brace in front? I know I need to quit hitting stuff but just normal race rubbing bends these things. I'm not gonna lie I'm getting tired of replacing em......
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Old 12-29-2012, 03:48 AM
  #3708  
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The only 2 rb6's at our track have bent the front brace as well. Exotek----> new front brace???


They bend back pretty easy, but thats not the point.
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Old 12-29-2012, 06:59 AM
  #3709  
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I read that the STRC brace doesn't bend but, that would lead to some other weak spot breaking. The consensus on the RB5 thread was to keep using the k brace. I'm using the STRC brace and haven't had any problems. Only thing I keep breaking is a steering knuckle.
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Old 12-29-2012, 09:17 AM
  #3710  
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Originally Posted by eper
If the spacers arent sitting on the tranny flush you have the wrong spacer. The one that goes there has a smaller o.d.
well you are correct, I had the wrong spacers. The spacers I needed were in the slipper bag. So all is well now lol. Almost done the build now, just have to build the rear shocks and mount the electronics. Now does kyosho make aluminum collars instead of all the plastic ones?
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Old 12-29-2012, 09:41 AM
  #3711  
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Yes kyosho makes all those shims but they are pricey. I guess i gotta say it. Im running the losi shims. I feel disgusting. Dam it

What do you guys think exotek could do to strengthen that hinge pin link. I been thinkin of making that. Whick i did for the sc so it actually bolted to the bulhead so i wouldnt keep loosing it but i ran that on a buggy and it bent. I guess its just a materials issue and maybe i could make it a little bigger. Hmmmm
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Old 12-29-2012, 10:14 AM
  #3712  
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Bending the front brace is trivial anything harder will probably send the impact to the arms or bulkhead. Pick your poison....
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Old 12-29-2012, 10:15 AM
  #3713  
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Originally Posted by Beasty Shout
I read that the STRC brace doesn't bend but, that would lead to some other weak spot breaking. The consensus on the RB5 thread was to keep using the k brace. I'm using the STRC brace and haven't had any problems. Only thing I keep breaking is a steering knuckle.
strc doesnt fit on the rb6.
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Old 12-29-2012, 11:15 AM
  #3714  
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It's for an alternate front end
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Old 12-29-2012, 02:26 PM
  #3715  
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Originally Posted by Jamison R
The only 2 rb6's at our track have bent the front brace as well. Exotek----> new front brace???


They bend back pretty easy, but thats not the point.
Exotek:
A carbon brace would be good, wouldn't bend.
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Old 12-29-2012, 03:07 PM
  #3716  
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that would be trick looking to
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Old 12-29-2012, 03:08 PM
  #3717  
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Bent better than broken? In a pinch you can bend it back.
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Old 12-29-2012, 04:05 PM
  #3718  
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Question......How does using the short, medium and long shock ends affect the handling of the car? I'm assuming it would be like limiting the shocks but correct me if I am wrong.
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Old 12-29-2012, 04:33 PM
  #3719  
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Originally Posted by lbckevin
strc doesnt fit on the rb6.
I guess what I was getting at was that it's made to bend because a bent hinge pin is better than the alternative. So they say. I just add that strc part just sayin I've never had a problem with it.
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Old 12-29-2012, 04:40 PM
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Hmmm, Also a ExoTek Alu. Vented MotorPlate would be awesome too as a alternative to the Kyo and STRC
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