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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 09-12-2012, 12:37 PM   #616
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One more thing.....did you overtighten the diff case screws...this will definately cause a bind.
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Old 09-12-2012, 12:51 PM   #617
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I never really ran any of tebos setups seeing how i dont run the same tracks im just wondering what he was trying to change by changing those items its a lot of doe for a2wd buggy that their top driver doesnt like it with the parts that where designed around it is all im saying. Im sure we will all know more when the car is released here
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Old 09-12-2012, 02:00 PM   #618
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Quote:
Originally Posted by Eric Tomczyk View Post
I think Tebo's Supernats setup might have some compromises in the setup due to the tires used, IMO suburbs aren't the best tire for WCRC, so he may have ran the .5 hubs to compensate.
They were all running the "best" tires for that track... tire selection is open. He was running the same tires as Cav... garauntee you they were right on par. I bet he had to run the .5 hubs because with a chassis that has no flex (no t-plate), rear traction / predictability will always be an issue... im not 100% sure as I don't run the car yet, but that is my early guess. I guess time will tell
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Old 09-12-2012, 06:16 PM   #619
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I wouldn't worry about the rear arms. I ran the ncg arms on my rb5 as I liked these best and the gul wing arms are the same just moulded instead of the metal piece.

There is no difference in the front axle. Maybe tebo feels the old 2 piece set up is stronger?

The 0.5 hubs are good for mod at most tracks, I wouldn't use these with a 17.5 but.

The old slipper surprised me but.

And has the kit got the tungsten carbide diff balls like the rb5 wc, fs2sp, rt5, scrsp?
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Old 09-12-2012, 08:01 PM   #620
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Originally Posted by Cpt.America View Post
They were all running the "best" tires for that track... tire selection is open. He was running the same tires as Cav... garauntee you they were right on par. I bet he had to run the .5 hubs because with a chassis that has no flex (no t-plate), rear traction / predictability will always be an issue... im not 100% sure as I don't run the car yet, but that is my early guess. I guess time will tell
From what I understand, while there was no control tire for the event, there was a "gentlemens agreement" to run that tire. It's just what I heard. WCRC is my home track, and like I said it's just my opinion, but MC suburbs aren't even in the top three tires there. The only time I see fast guys running that tire is when there is a big event coming up that has that as the control tire. They also may have been running it because it was the control tire for the Reedy and they had a baseline setup to compare to.
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Old 09-12-2012, 08:07 PM   #621
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Originally Posted by Tom87 View Post
There is no difference in the front axle.
Not true, it's possible to run a narrower front track (for more steering) with the WC one peice axles. The two peice are also one gram lighter.

But I'm pretty sure the reason Kyosho uses the one peice axle in the kit is because it is less expensive.
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Old 09-12-2012, 08:35 PM   #622
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Quote:
Originally Posted by Derry View Post
Yeah, I realize that... I should have been more specific. I meant I wish he would release a base setup using all the parts that come with the car, kinda like Ryan C did with his "all clay tracks" setup.
I concur. If you look at step4 of the RB6 manual, the owner is instantly presented with an open question as to which kick-up spacer to use - 'It is used by setting'. 0.5? 1.0? Oh I see Tebo is not using any. But he's also running a cocktail of 0.5 rear hubs, old rear arms etc.

Sure you'll need to test them out for your own track etc. but a starter standard baseline would be more helpful. But I guess this is a new car afterall.
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Old 09-12-2012, 08:42 PM   #623
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Quote:
Originally Posted by Eric Tomczyk View Post
From what I understand, while there was no control tire for the event, there was a "gentlemens agreement" to run that tire. It's just what I heard. WCRC is my home track, and like I said it's just my opinion, but MC suburbs aren't even in the top three tires there. The only time I see fast guys running that tire is when there is a big event coming up that has that as the control tire. They also may have been running it because it was the control tire for the Reedy and they had a baseline setup to compare to.
Can you share what were the 'top three tires' consensus for WCRC? Thanks,
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Old 09-12-2012, 09:03 PM   #624
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I wonder if Kyosho will put together a $59.99 WC upgrade/downgrade package to bring the car up to Tebo specs.
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Old 09-12-2012, 10:32 PM   #625
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My preferred tire is pink BK bars (1 house cut out), then gold barcodes. A lot of the fast guys run gold barcodes. I have not tried them but the panther bk clone is supposed to be pretty close to the losi. I've also heard that pink HB beams are really good there.

back on topic- I did notice that the back of the RB6 chassis has some material removed to promote flex. Like I've seen on some TLR team driver's cars.
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Old 09-12-2012, 10:40 PM   #626
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Quote:
Originally Posted by Eric Tomczyk View Post
My preferred tire is pink BK bars (1 house cut out), then gold barcodes. A lot of the fast guys run gold barcodes. I have not tried them but the panther bk clone is supposed to be pretty close to the losi. I've also heard that pink HB beams are really good there.

back on topic- I did notice that the back of the RB6 chassis has some material removed to promote flex. Like I've seen on some TLR team driver's cars.
I also prefer bar codes. As previously stated, I do not believe they all ran suburbs to include Cav. I am almost certain Cav ran bar codes. I could be wrong but the next time I am at the track I will confirm. His car is on display.
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Old 09-12-2012, 11:14 PM   #627
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Really? They dont tell you which kick up setting is standard or where you should start. I gotta say this car is becoming less and less attractive to me. I love kyosho cars but this lack of what i would call a baseline setup a d the fact that their top driver doesnt back the entire product with his setup is very troubling to me. I wS very excited when i first saw they where releasing a new car now i have nothing but unanswered questions
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Old 09-12-2012, 11:44 PM   #628
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Quote:
Originally Posted by eper View Post
Really? They dont tell you which kick up setting is standard or where you should start. I gotta say this car is becoming less and less attractive to me. I love kyosho cars but this lack of what i would call a baseline setup a d the fact that their top driver doesnt back the entire product with his setup is very troubling to me. I wS very excited when i first saw they where releasing a new car now i have nothing but unanswered questions
IMHO, I expect there will be many setup changes yet as this is an entirely new car. We won't see an equilibrium state in the near future. The rb5 went thru 4 editions until we got to a +8 to +13 chassis. Using rb5 parts is not that big a deal, that car has proved itself, different conditions call for different needs.

The fact that the rb6 came 2nd at Cav's backyard where he dominated is encouraging, especially from a new car. But time will tell I suppose.
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Old 09-12-2012, 11:58 PM   #629
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According to the setup sheet posted on rc10.com, Cavalieri used MC Suburbs 1.0 on the rear and Gold Barcodes on the front. On a related note, 4w was the same combo (albeit the mid front).
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Old 09-13-2012, 01:37 AM   #630
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Eric...

Proline Suburbs v1 are THE most popular tire at West Coast. Gold barcodes are second and no racers run the BK bars anymore.
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