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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 10-14-2012, 06:36 PM   #1546
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What do I need to use a smaller spur? Seems Kyo doesnt make any smaller than stock spur 76. What gears are you guys running for Blinky 17.5?
I use the TLR 70t spur and Losi slipper pads with 17.5 NT. The Kyosho's slipper plates rest perfectly on the Losi slipper pads, whereas they rest on the AE/Kimbrough spur gears themselves.

Until Kyosho releases a smaller spur gear (Pillars knows we need one!), this is the best combo of spur/slipper pad so you can still utilize the slipper (if you want to?), without locking down onto the spur gear itself. Some run 17.5 NT with locked slippers... Others (myself included), prefer the feel a slipper provides. Either way, you have options!
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Old 10-14-2012, 07:09 PM   #1547
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Originally Posted by desertracerdad View Post
I use the TLR 70t spur and Losi slipper pads with 17.5 NT. The Kyosho's slipper plates rest perfectly on the Losi slipper pads, whereas they rest on the AE/Kimbrough spur gears themselves.

Until Kyosho releases a smaller spur gear (Pillars knows we need one!), this is the best combo of spur/slipper pad so you can still utilize the slipper (if you want to?), without locking down onto the spur gear itself. Some run 17.5 NT with locked slippers... Others (myself included), prefer the feel a slipper provides. Either way, you have options!
The AVID topshaft for RB5 / RB6 is coming within a couple weeks. We improved on the gear mesh and it will also allow you to run the Triad slipper system which makes down to a 69 tooth spur! Part number AV1020-TOP-KYO
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Old 10-14-2012, 07:21 PM   #1548
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Originally Posted by Kooz View Post
Not sure if this issue has been brought up yet because I don't want to read 103 pages. The steering Ackerman busted my first time out and shortened my maiden voyage! The part is on back order too! Just an FYI, the Associated Ackerman for B4.1 works fine. Just a temporary fix until parts become more available...
Kooz!
Can't believe no-one's selling this in carbon fiber yet, you'll make a killing before the alum K is released..
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Old 10-14-2012, 07:23 PM   #1549
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Hey guys what is the difference between the 2 ring and 3 ring axels. I traded awhile back for a RB5 and the guy included the aluminum hub carriers and they have the 3 ring axel stubs. Just trying to figur out which axels to use. Thx.
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Old 10-14-2012, 07:30 PM   #1550
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Hey guys what is the difference between the 2 ring and 3 ring axels. I traded awhile back for a RB5 and the guy included the aluminum hub carriers and they have the 3 ring axel stubs. Just trying to figur out which axels to use. Thx.
Run the 3 ring. Initially the RB5 had short arms, short CVDs and long axles. They came out with some revisions and eventually ended up with longer arms, longer CVDs and shorter axles which the 3 stripe represent.
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Old 10-14-2012, 07:32 PM   #1551
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the 3 ring axles are the long ones, they require a 3mm shim. The 2 line axles require no shims.
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Old 10-14-2012, 07:41 PM   #1552
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I have had two race and practice sessions with RB6. I have messed with front shock location and flipping rear arms and running #2 hole. I keep going back to Std rear arms hole #3 and #3 hole on front shock tower. I keep going back to this setup, most consistent and the fastest lap times.
Just wish to say that having all 3 hole options on one arm is so much more convenient than seperate 521 and 521-1 rb5 arms, which essentially grew out of the ZX-5. So obvious and simple. Man, the rb5 looks so old..
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Old 10-14-2012, 07:44 PM   #1553
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Fresh build of my first 1/10 2wd Buggy.

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Old 10-14-2012, 08:25 PM   #1554
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I remember reading that there was a typo in the instructions for the thrust balls in the diff. Is it 7 or 8 balls?
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Old 10-14-2012, 08:33 PM   #1555
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Originally Posted by rcfiend View Post
Hey guys what is the difference between the 2 ring and 3 ring axels. I traded awhile back for a RB5 and the guy included the aluminum hub carriers and they have the 3 ring axel stubs. Just trying to figur out which axels to use. Thx.
The axles you are referring to are the ones that go on the 65.5 mm drive shafts that were introduced with the RB5 SP conversion.
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Old 10-14-2012, 08:34 PM   #1556
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Originally Posted by rcfiend View Post
I remember reading that there was a typo in the instructions for the thrust balls in the diff. Is it 7 or 8 balls?
8.
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Old 10-14-2012, 08:36 PM   #1557
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Originally Posted by gelshocker View Post
Just wish to say that having all 3 hole options on one arm is so much more convenient than seperate 521 and 521-1 rb5 arms, which essentially grew out of the ZX-5. So obvious and simple. Man, the rb5 looks so old..
It looks old but the guys here in La La land still running it dominate in stock. But there fewer and fewer for them sue to the increase of people switching to the 6.
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Old 10-14-2012, 08:39 PM   #1558
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Has anyone tried AKA Hexlite wheels? I bought a set and they dont fit the rear, the hole is bigger and the nut hole is not deep enough you cant get the wheel nut on more than a few threads. Hope that makes sense? The fronts fit. To bad I figured it out after I glued the tires!!
same thing with the JConcepts 12mm b4.1 wheels. I have used the serrated nuts and it just fits. standard nuts won't make it on.
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Old 10-14-2012, 08:41 PM   #1559
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8.
Thx.
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Old 10-14-2012, 08:47 PM   #1560
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What part in the steering keeps breaking! Just wanting to know before I run! Thanks if possible part # and does the gear diff fit this car.

Last edited by gas1313; 10-14-2012 at 08:59 PM.
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