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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 11-13-2013, 08:01 AM   #8626
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If I wanted a setting in between running flat arms and gull wing arms.

Would running flat arms with medium length shock eyelets be a solution? In other words, would creating more droop with the flat arms create a middle ground between flat and gull wing?

I'm curious for either MM or RM configurations.

Thanks.
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Old 11-13-2013, 08:04 AM   #8627
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Originally Posted by kyle3333 View Post
If I wanted a setting in between running flat arms and gull wing arms.

Would running flat arms with medium length shock eyelets be a solution? In other words, would creating more droop with the flat arms create a middle ground between flat and gull wing?

I'm curious for either MM or RM configurations.

Thanks.
The eyelet difference is there to get to the same droop level between the 2 arms, this car runs little droop as it is, I don't imagine you would want to run less.
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Old 11-13-2013, 08:26 AM   #8628
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Originally Posted by MikeXray View Post
The eyelet difference is there to get to the same droop level between the 2 arms, this car runs little droop as it is, I don't imagine you would want to run less.
I always thought that the flat arms with short eyelets took some droop away compared to the standard kit gull wing setup.

Whether that is the case or not, wouldn't I be adding more droop by using the medium eyelets with the flat arms? In theory creating a middle ground between the two rear arm configurations.
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Old 11-13-2013, 08:27 AM   #8629
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Honestly, I don't understand why anyone runs the gull wing arms. I liked them way better even in low traction conditions because it just made the car feel right. It felt really lazy in the rear with the gull wing arms.
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Old 11-13-2013, 09:06 AM   #8630
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Originally Posted by Razathorn View Post
Honestly, I don't understand why anyone runs the gull wing arms. I liked them way better even in low traction conditions because it just made the car feel right. It felt really lazy in the rear with the gull wing arms.

Raz,

Its personal preference for sure but I like the straight arms on the rear motor car and the gull wing arms on the MM set up.
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Old 11-13-2013, 04:43 PM   #8631
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Originally Posted by Jochim_18 View Post
MM SETUP FOR LOW TO MEDIUM TRACTION WET TRACK

Here what's I have been running at my local track... You can't use setup on a track that have traction with MM buggy more than likely you are not gonna have forward bite when you run the same setup on a track that have low traction. I have been running MM since the losi 22 came out and learn a lot how to properly setup a MM buggy.. I got the base setup posted at petit rc for kyosho RB6..
For those of you that have tried this setup, what rear springs are you using? I dont see that avid makes a purple rear spring? Just a front purple 3.61 rate. My guess is that the setup sheet shows the springs between front and rear reversed. So white rear, purple front....Looking at the pistons and oils listed, that has to be the case
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Old 11-13-2013, 07:43 PM   #8632
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Originally Posted by ovalracer1m View Post
For those of you that have tried this setup, what rear springs are you using? I dont see that avid makes a purple rear spring? Just a front purple 3.61 rate. My guess is that the setup sheet shows the springs between front and rear reversed. So white rear, purple front....Looking at the pistons and oils listed, that has to be the case
I have actually driven Kim's car....and it's pretty dialed..reminded me of driving a touring car..I just got an RB6 and I'm going to start with RM..but his set up is good..
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Old 11-13-2013, 09:37 PM   #8633
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Originally Posted by kenny lutz View Post
I just switched to mm and I was I spaced the rear hinge pin holder 2mm up. So should I raise the tranny up 1mm or 2mm? Thanks for the help
I was wondering this too... Any suggestions?
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Old 11-14-2013, 07:51 AM   #8634
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Originally Posted by Oasis View Post
I have actually driven Kim's car....and it's pretty dialed..reminded me of driving a touring car..I just got an RB6 and I'm going to start with RM..but his set up is good..

thank you for the insight, looks like a decent starting point MM. Our track is med/high bite and very tight. Just noticed the sheet has the springs switched around but got that figured out. thanks
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Old 11-14-2013, 08:20 AM   #8635
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does anyone have a reccomendation on a starting setup for mm and also do I need anything that doesn't come in the kit to set it up properly. I have it is rear motor now with the older style alum rear hangers and the v2 hubs 0 degree
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Old 11-14-2013, 09:54 AM   #8636
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does anyone have a reccomendation on a starting setup for mm and also do I need anything that doesn't come in the kit to set it up properly. I have it is rear motor now with the older style alum rear hangers and the v2 hubs 0 degree
Best resource for setups:

http://www.petitrc.com/setup/kyosho/...UltimaRB6.html

Seems that the Tebo setups are the best to start from:

http://www.petitrc.com/setup/kyosho/...sic2013031517/

If you don't have Rb5 UM521 arms, the rest of the setup applies, but you need to run a longer shock end on the rear, and thicker rear shock oil.
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Old 11-14-2013, 11:29 AM   #8637
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Kevin was asking about the knuckle spacer in relation to caster: found this http://www.petitrc.com/setup/kyosho/...dAckermanMath/
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Old 11-14-2013, 11:57 AM   #8638
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I ran the gulls last night again in my MM car. The car is SO soft with them on there. I run 2x1.6, White spring, Losi 27.5wt with a car that is 1560 and I was nose jumping like crazy. I went back to the flat arms and the car felt way better, especially jumping. I dont know if you need even weight or just at least 30wt in the rear, but I normally run 25/27.5 and 30 or 32.5 front. It was stupid how bad it made my car.

Bleh
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Old 11-14-2013, 02:45 PM   #8639
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Default RB6 Setup

Hey fellas, I just wanted to post a setup on 2wdMod.com that was ran by Kyosho/ Team Orion driver, Andy Dibrino. His car was absolutely dialed all weekend. Give it a try and see if you like it. Of course...get the right tires on and adjust ballstud height accordingly.

http://2wdmod.com/2013/11/14/2wd-clo...winning-setup/
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Old 11-14-2013, 05:40 PM   #8640
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I see he is running a saddle pack, would the setup work with a shorty or are saddle packs better for mid motor?
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