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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 01-05-2015, 02:03 PM
  #11431  
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Originally Posted by phillypete
For those of you who have dabbled in the black magic that is Zach Roger's OCRC setup:

What would you do to gain a bit more rear side bite?

... and I've already been through the tire and sauce gauntlet to get everything I can out of that department.
try lower a rear roll center.....or maybe a bit longer rear link.
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Old 01-05-2015, 11:38 PM
  #11432  
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Originally Posted by K_King

You can remove the screws from the waterfall to get more grip, it's a quick adjustment that you can definitely tell.
cheers
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Old 01-06-2015, 07:24 AM
  #11433  
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So Ive messaged quite a few painters with no reaponse on here. I need a painter asap with good turnover time and skill. USA only please if anyone has any info please inbox me some details and examples if possible. My painter retired.
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Old 01-06-2015, 09:57 AM
  #11434  
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What are you all using in between the motor and shorty when you are pushing the shorty all the way back. Gonna put ZR setup on my car.
Also the car im using came with the avid topshaft and slipper system. However it came with 76 or 78 spur cant remember. When I was looking online it says these are for stock. Can I not use this with a 7.5? If im able to use it whats the pinion range.
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Old 01-06-2015, 11:35 AM
  #11435  
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Originally Posted by gixxer420
What are you all using in between the motor and shorty when you are pushing the shorty all the way back. Gonna put ZR setup on my car.

Cut a battery foam like a 1/4" all the way across width wise, should be about right.


Also the car im using came with the avid topshaft and slipper system. However it came with 76 or 78 spur cant remember. When I was looking online it says these are for stock. Can I not use this with a 7.5? If im able to use it whats the pinion range.
76 is what most guys use for mod(spur that comes with the car new) at the surf city stock guys were in the 69-70 tooth range on the spur with 33- 34 pinion.
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Old 01-06-2015, 11:45 AM
  #11436  
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Good deal thx CaseyD
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Old 01-06-2015, 12:44 PM
  #11437  
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Originally Posted by gixxer420
What are you all using in between the motor and shorty when you are pushing the shorty all the way back. Gonna put ZR setup on my car.
.
I am using the battery stop from the RT6. It screws in under the motor.
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Old 01-06-2015, 12:58 PM
  #11438  
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Originally Posted by gixxer420
What are you all using in between the motor and shorty when you are pushing the shorty all the way back. Gonna put ZR setup on my car.
Also the car im using came with the avid topshaft and slipper system. However it came with 76 or 78 spur cant remember. When I was looking online it says these are for stock. Can I not use this with a 7.5? If im able to use it whats the pinion range.
Two battery pads from my B4. The normal sized ones not the little thin ones. It's a tight fit at first, just jam it in there. After running it this way for a few days the pads will conform to the motor and it will feel real nice taking the battery in and out and keeping it snug when it's in the car. Really no need for the RT6 stop.
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Old 01-06-2015, 05:11 PM
  #11439  
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Just bought the gear diff. Does anybody know if you are supposed to use both gaskets or just one between the 2 halves?
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Old 01-06-2015, 05:54 PM
  #11440  
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Old 01-06-2015, 05:57 PM
  #11441  
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Originally Posted by chevmaro
Two battery pads from my B4. The normal sized ones not the little thin ones. It's a tight fit at first, just jam it in there. After running it this way for a few days the pads will conform to the motor and it will feel real nice taking the battery in and out and keeping it snug when it's in the car. Really no need for the RT6 stop.
I run super-stock so want a cooler motor. That's why I don't use foam and use the rt6 stop.
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Old 01-06-2015, 06:35 PM
  #11442  
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Originally Posted by aloksatoor
I run super-stock so want a cooler motor. That's why I don't use foam and use the rt6 stop.
do you have to have the newer chassis to use that stop? I won't mention any names but i know a person on here that made a pretty sic stop on a 3D printer.
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Old 01-06-2015, 07:06 PM
  #11443  
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Originally Posted by K_King
The brace is to prevent twisting under load from my understanding.

You can remove the screws from the waterfall to get more grip, it's a quick adjustment that you can definitely tell.
A flexible chassis seems to be one solution to gain traction with the RB6. I don't get it. A flexible chassis in racing motorcycles and automobiles is a bad thing because load is transferred to other parts of the vehicle. Any ideas?
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Old 01-06-2015, 07:40 PM
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Too much flex is bad.
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Old 01-06-2015, 11:21 PM
  #11445  
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Originally Posted by CaseyD
do you have to have the newer chassis to use that stop? I won't mention any names but i know a person on here that made a pretty sic stop on a 3D printer.
yes it's only on the lw and the newer stock chassis unfortunately
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