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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 10-05-2012, 09:19 AM   #1066
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as a tuning option, can anyone tell me what the two spacers will actually change?

http://www.speedtechhobbies.com/inde...roduct_id=1847
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Old 10-05-2012, 09:36 AM   #1067
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Quote:
Originally Posted by STOCKMANRacing View Post
Ya they are aftermarket. There are many different colors, just ask your local hobby shop or you can find them online. You will also need all different bolts as they will not use the OEM bolts.
Looks great! I'm gonna take a wild guess and say that you've had or currently have a Durango DEX210...
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Old 10-05-2012, 09:36 AM   #1068
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Originally Posted by t8rtot View Post
as mentioned on several pages before.. they are upgraded and beefier than the previous design. still plastic
Are you sure about that??? I recall that some one said that the new plastic is softer and that's why several people are already having issues. The rb5 parts drop right in and seem to be a stronger composite material.
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Old 10-05-2012, 09:41 AM   #1069
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re-read the post.. i said they are designed larger in size on the 6.. never said they were better.

i haven't too many state they have issues with the holders.. just steering components mostly, but i already have the aluminum parts so not an issue for me.
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Old 10-05-2012, 09:54 AM   #1070
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Aaaaah, yes you are correct. Sorry, iPhone reading fail. Where are the racks actually in stock? I have looked at a few places. I am going to run the rb5 hangers until they fail and go from there.
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Old 10-05-2012, 09:55 AM   #1071
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About to order a RB6, Could someone give me as list of hop up parts needed or is the kit good out of the box. A local that has a RB6 put the um521-1 arms on it instead of the kit arms. Didn't get to ask him why.
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Old 10-05-2012, 10:02 AM   #1072
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i would get all the typical 2wd parts.. front hubs, spindles, axles, bearings, shims etc.. apparently some are finding issues with the steering rack.. i haven't seen any in stock anywhere.. i'm talking to a machinist locally to see about a batch of 50 made..

for upgrades.. the aluminum hangers, rear hubs, and steering when they're available.

i look forward to running mine this wknd
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Old 10-05-2012, 10:05 AM   #1073
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Thanks man. Put me down for an aluminum rack.
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Old 10-05-2012, 10:24 AM   #1074
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Hey guys I've managed to finish a side project and starting the rb6 build Great to see so many cool sixes out there. So I'm having a problem with the front sus mount block: the little nub inside the front arms that carries the set screw at the back is causing serious binding with the sus mount.

Should I shave it off? I don't recall others having the same issue? It's illustrated by the red arrow. The hole at that end is seriously tight when trying to push the hinge pin through too. Thanks for the help.

http://flic.kr/p/dgXXqJ
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Old 10-05-2012, 10:43 AM   #1075
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I had a similar issue when I had that screw tightened down. I backed that screw out a hair and it all free'd up.
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Old 10-05-2012, 10:47 AM   #1076
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Quote:
Originally Posted by SAGISI View Post
Haven't painted the body yet, I have a few more customers bodies to paint first. Maybe if NorCal has a body in stock so i can do a quickie. Im sure I will find a way to drive this beast on Saturday. Ill have my b4.1 fitted with a 17.5 to battle you in the mean time. The RB6 will stay a mod only car. Drove it on the street and this car is sooo smoothhhhhh.
The battle won't be the same though :-(
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Old 10-05-2012, 10:48 AM   #1077
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i ran into the same issue, once you wiggle it through, its smooth as butter. just takes some lining up.
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Old 10-05-2012, 10:51 AM   #1078
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Kimbrough shows a 48p slipper gear and a spur gear what's the difference?

OCT 8th RB6 arrives.

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Old 10-05-2012, 10:54 AM   #1079
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goin2drt you will need 3mm washers. here is a link to where you can get them

http://www.racers-edge.com/3mm_Alumi.../rce10200r.htm
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Old 10-05-2012, 11:15 AM   #1080
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Quote:
Originally Posted by t8rtot View Post
i ran into the same issue, once you wiggle it through, its smooth as butter. just takes some lining up.
I'm not getting the smooth as butter... set screw in arm and in sus mount now even in yet..

http://flic.kr/p/dgYFKd
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