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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
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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 01-02-2014, 02:07 PM
  #9241  
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Originally Posted by KalEl63
Because over 50% of my K wheels have cracked and not due to bad driving.
+1 plus where i live there non existant to buy.
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Old 01-02-2014, 02:40 PM
  #9242  
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Also Kyosho doesn't make buggy tires. I know a lot of racers who like to match their tires to the wheels they are using. So AKA tires and wheels for the best fitment possible.
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Old 01-02-2014, 02:48 PM
  #9243  
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i ran the saddles and shorty packs today, switching every 4 minutes or so to compare feel and times. the shorty was fastest by ~0.3 seconds and felt quicker on the infield section, especially on the off camber turn into the "S" section. But the saddle pack was a little more planted and I felt a bit more stable, especially landing on the flats. I could see running the saddle when the track is fresh for more traction or.. with a mod motor (im stock). but right now my track has more than enough traction with the shorty pack.
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Old 01-04-2014, 07:00 PM
  #9244  
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Found something cool in my new kit this weekend when I was building it. 2013 Ifmar world champ key chain.


Last edited by Cameron Kellogg; 01-05-2014 at 09:59 AM.
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Old 01-04-2014, 07:33 PM
  #9245  
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Originally Posted by Cameron Kellogg
Found something cool in my new kit this weekend when I was building it. 2013 Ifmar world champ key chain.
Nice.. I just got my Kit like 2 months ago. . Did it come with the new chassi that's been mill or aluminum gear ?
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Old 01-04-2014, 09:45 PM
  #9246  
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No but it did have the updated rear MM bulkhead with the sway bar mount built in. My kit had red rear springs in it which says it comes with white. The front has been modified so the steering rack clears.

Overall really impressed with the kit and quality and the constant update of parts when needed. The only bummer was the red rear springs. I purchased gold thinking I would only be switching between gold and white.
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Old 01-05-2014, 07:06 AM
  #9247  
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the kits always came with the red springs in the past, maybe they are changing that? my kit is new too, but no keychain for me. but it had the new bulkhead and swaybar mount and revised front plate as well. it did come with a sweet tebo world champion sticker. which i promptly pulled off and walked around the house for 5 minutes looking for a place to stick it.
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Old 01-05-2014, 08:30 AM
  #9248  
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How can you tell if your kit has the new bulkhead, swaybar mount and front plate? Are there any comparison pictures?

One thing I noticed in my kit is the fact that in the manual it stated to use the black ball studs for the rear camber links but the kit included only the medium size ball studs. I thought I was missing parts at first
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Old 01-05-2014, 09:52 AM
  #9249  
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Pictures of the UM724 and UM724B. Rear MM bulk head. This also allows the use of their brass weight kit to be used because of the two bolt holes. Like Tebo's worlds car.



The front I think has been changed for a while. Their is a note in the kit to cut the part for the steering bell ranks to clear when turning but the mold has been modified already.
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Old 01-05-2014, 10:25 AM
  #9250  
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Awesome thanks Cameron. My kit has those changes and the pre-modified change to the moulding - good to know.

Liking the kit a lot so far but whereas I thought my MP9 TKI3 was worth the asking price I think this kit is a little over priced for what's included in the box as stock. Not the same experience as the TkI3 I don't think, but still an excellent kit regardless compared to some of the competition.
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Old 01-05-2014, 10:28 AM
  #9251  
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yeah same her... looks like they just threw that cool keychain..
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Old 01-05-2014, 05:20 PM
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Originally Posted by Harry Sachs
Hi guys, I'm looking to buy a NIB RB5 WC. PM if you have one....thanks
Bump
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Old 01-05-2014, 06:36 PM
  #9253  
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Although I have cracked a rim from time to time, I just cut open 10 pair of tires to re use the rims and inserts and no cracks..
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Old 01-06-2014, 02:17 AM
  #9254  
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Well I finally got my Jconcept and AKA wheels to try.
The AKA’s feel softer plastic than the Jconcepts but the Kyosho low profile nut seems to have more bite on the thread on the Jconcepts on the rear.

Will be testing them out this weekend and will also be trying Proline very soon.
Cheers again for all that gave me all the info on this
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Old 01-06-2014, 06:17 AM
  #9255  
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Anybody try the Mip pucks system for stock class yet?
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