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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 10-04-2012, 07:03 PM   #1036
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Originally Posted by lbckevin View Post
The barcodes are just fine at WC...Probably 50/50 now on guys running barcodes vs suburbs
Good, mine still aren't broken in yet. Just wish there was a 3rd option out there. Kind of tires of paying for the same ole tires over and over again.
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Old 10-04-2012, 07:33 PM   #1037
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i am looking forward to seeing some other race video of the RB6 in action . post up if you get some . i race again sunday will be video taping the mains again . my shorty packs came today so i will be using them and making a few small changes to the setup .
Here is a video of Kyosho factory driver Andy Dibrino running his RB6 for the first time. He starts from the TQ spot. I am running an RB5 with +13 chassis starting second, for comparison.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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Old 10-04-2012, 07:36 PM   #1038
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Originally Posted by t8rtot View Post
Has anyone compared shorty to standard lipo? If so on what sort of surface.

I'm buying all new lipos and curious which ones to get, if there is an obvious advantage.
Most guys at my local track are running the shorty. Very responsive.

I'm running the Peak 90c 5000mah stick for the time being. Besides going up in weight in the rear shock oil to compensate for the weight... It didn't feel much different than the shorty. It definitely is more responsive with the shorty and I feel like overall it does everything better with the shorty. That being said, I was still turning some fast laps with the stick.

This is on a low to medium bite topsoil/clay mix.
Quote:
Originally Posted by jpcopeland1 View Post
Good, mine still aren't broken in yet. Just wish there was a 3rd option out there. Kind of tires of paying for the same ole tires over and over again.
I tried a brand new set of Hot Bodies Beam rear pink compound and HB Fullslot fronts pink compound tonight. Not too shabby. They're not broken in yet but they felt pretty good. They'll probably work well once they're fully broken in. Usually I run M4 Suburbs all around or Blue V1 Barcodes all around at my track.
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Old 10-04-2012, 07:42 PM   #1039
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Wish I could see the video on my ipad!
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Old 10-04-2012, 09:15 PM   #1040
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Quick Question,
Anybody using different brand lexan wings yet?
After the 2nd day of driving the rb6, my wing needs to be replaced lol
What wings would work?
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Old 10-04-2012, 09:23 PM   #1041
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how thik is the chassis 2.5 or 3
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Old 10-04-2012, 09:45 PM   #1042
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how thik is the chassis 2.5 or 3
2.5
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Old 10-04-2012, 09:49 PM   #1043
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Originally Posted by BranVita View Post
Quick Question,
Anybody using different brand lexan wings yet?
After the 2nd day of driving the rb6, my wing needs to be replaced lol
What wings would work?
IMHO the Step 2.0 resembles a lot like LMR wing
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Old 10-04-2012, 10:02 PM   #1044
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Just finished my RB6! Wiring the car took longer then building it.
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Old 10-04-2012, 10:19 PM   #1045
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Nice wire job Ryan. Where is your on off switch mounted?
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Old 10-04-2012, 10:29 PM   #1046
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i wish i had one coming, after looking over the rb6 car,i have a concern, front tower,rear tower, steering rack, how are they holding up so far with u guys? someone show up today at my track today ,ran half a pack and broke a rack and it was not that bad of a crash.
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Old 10-04-2012, 10:32 PM   #1047
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Originally Posted by SAGISI View Post
Just finished my RB6! Wiring the car took longer then building it.
I guess we'll do battle with our new rides this weekend
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Old 10-04-2012, 10:59 PM   #1048
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Nice wire job Ryan. Where is your on off switch mounted?
Here you go. After I cut the battery brace it will be even easier to get to. But for now i can easily get to it with my asian fingers.
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Old 10-04-2012, 11:04 PM   #1049
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I guess we'll do battle with our new rides this weekend
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.
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Old 10-04-2012, 11:52 PM   #1050
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Originally Posted by 1bigshane View Post
i wish i had one coming, after looking over the rb6 car,i have a concern, front tower,rear tower, steering rack, how are they holding up so far with u guys? someone show up today at my track today ,ran half a pack and broke a rack and it was not that bad of a crash.
Steering Rack, plastic suspension carriers are breaking.

Make sure you build the steering rack correctly, arrow on the bottom of the rack facing forward, yes it makes a difference.

I would like to see a nice carbon fiber steering rack.
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