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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 01-23-2013, 02:46 PM   #4636
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^^ that's what i meant by length... i didn't want to ask how long is your shaft length on a public forum^^
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Old 01-23-2013, 03:00 PM   #4637
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^^ that's what i meant by length... i didn't want to ask how long is your shaft length on a public forum^^
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Old 01-23-2013, 03:37 PM   #4638
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sorry guys if i'm blunt.. just my personality, i guess.. i probably spend way too much time on here so when i see questions like "this doesn't fit, what should i do?" or my favorite "i know this was asked 100x's but XYZ". most of the time i search (on here and google) before i even touch the post reply button. i built my first kit, broke in my first Picco and restored my 1979 monte carlo at 22 by google and searching various car forums.

idk seems simple enough to me. i like to help as much as the next guy but i don't like those that dont even try do the research on there own. #Rant Over.

On a lighter note, i'll provide feedback of my own about the slipper tonight/tomorrow as well as the -1 arms and fitment of various exotek parts. i'm going to play with ball stud heights as well.
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Old 01-23-2013, 03:56 PM   #4639
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new info for all you new RB6 buyers on post #1.
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Old 01-23-2013, 03:58 PM   #4640
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new info for all you new RB6 buyers on post #1.
Dude you are the MAN!
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Old 01-23-2013, 04:16 PM   #4641
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Hey Cap. The 22 does not use a 2.6:1 transmission ratio. It is 2.43:1. So, 22 gearing would not be the same as a B4, RB5 or RB6.
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Old 01-23-2013, 04:24 PM   #4642
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Hey Cap. The 22 does not use a 2.6:1 transmission ratio. It is 2.43:1. So, 22 gearing would not be the same as a B4, RB5 or RB6.
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Old 01-23-2013, 04:32 PM   #4643
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fixed
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Old 01-23-2013, 05:51 PM   #4644
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Originally Posted by SAMCRO View Post
http://www.petitrc.com/setup/kyosho/...CRC2013011213/

The setup above calls for an RB5 front axle. Just wondering what the difference is... Yes, I bought some kyosho wheels today...
from what I could determine form reading and searching through dozens of pages was that the RB6 hex in thinner than the RB5 one and when the whole assemble is on the car with a JC front or other wheel there was the chance that there could be some slight binding.

I am about to build up my RB6 so I was planning on installing the RB5 mod from the start.
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Old 01-23-2013, 07:05 PM   #4645
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Originally Posted by Rfury View Post
Hey Cap. The 22 does not use a 2.6:1 transmission ratio. It is 2.43:1. So, 22 gearing would not be the same as a B4, RB5 or RB6.
I had a 22 and i'm pretty sure it had a 2.6 transmission ratio.
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Old 01-23-2013, 07:07 PM   #4646
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Originally Posted by shark2288 View Post
I had a 22 and i'm pretty sure it had a 2.6 transmission ratio.
Negative Losi has a 2.43 ratio for their trannys.
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Old 01-23-2013, 07:32 PM   #4647
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Originally Posted by HalfManHalfGod View Post
I've read most of that but i'm not sure how to translate that to the setup sheet. For example ackerman:

More
(Bigger difference in steering angle
between the two font wheels) More Ackermann makes the steering more consistent, and smoother.
It just feels right, also at low speeds and in tight turns.
Less
(Smaller, or no difference in steering
angle between the two font wheels) Less Ackermann makes the steering more agressive at high speeds.
The car turns in more agressively.
It doesn't work well when either traction or cornering speeds are low.

Would putting shims on the ballstuds that attach to the ackerman give me more or less ackermann

My track I would consider small with high traction clay that has 3 180degree hairpin turns. I want to be able to make as tight as a turn as I can and carry as much speed as possible.


Another stupid question: What is the easiest way to detach the turnbuckles from the ballstuds? I know i'm doing it completely wrong.
I'm wondering the same thing about adding shims to the ballstuds on the steering rack? I see Tebo added 1mm to his latest setup.
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Old 01-23-2013, 08:47 PM   #4648
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I'm wondering the same thing about adding shims to the ballstuds on the steering rack? I see Tebo added 1mm to his latest setup.
one thing that i started doing awhile back that helped alot was try whatever adjustment you are wondering about but exagerate it, so like how you are asking about shims, rather than adding one shim and possibly not noticing anything add 3 or 4, then you get it stuck in your head what is accomplished by adding shims, or even shock position, if you are thinking of laying a shock in one hole, go all the way, if its too much back it off a hole, but at least you know for future reference what changes will do what,
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Old 01-23-2013, 08:55 PM   #4649
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Quote:
Originally Posted by shark2288 View Post
I had a 22 and i'm pretty sure it had a 2.6 transmission ratio.
Quote:
Originally Posted by Gitsum View Post
Negative Losi has a 2.43 ratio for their trannys.
Yeap. Losi always has used the 2.43:1. I have no idea why when everyone else is 2.6:1. They see an advantage in it somewhere.
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Old 01-23-2013, 09:51 PM   #4650
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Quote:
Originally Posted by shark2288 View Post
I had a 22 and i'm pretty sure it had a 2.6 transmission ratio.
22 has a 2.43 gear ratio
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