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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 11-06-2012, 12:38 PM   #2416
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The only similarity to a 22 is that it has four wheels and is a 1/10 2wd buggy.
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Old 11-06-2012, 01:40 PM   #2417
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Quote:
Originally Posted by Posvar View Post
The only similarity to a 22 is that it has four wheels and is a 1/10 2wd buggy.
+1.... The 22 is a joke out of the box compared to the RB6 out of the box.
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Old 11-06-2012, 06:00 PM   #2418
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Quote:
Originally Posted by Lonestar View Post
Hi guys

what aftermarket / other brands wheels are there for the RB6? Dex2wd, maybe? Would hex'ed B4.1 wheels fit by chance? Sourcing issues with Kyosho parts here sometimes...

thanks
Paul
I've tried Avids. The front hex is too recessed so you'll need to space it out by 1mm (or dremel it down). The rear you'll need a serrated nut for like the other wheels claiming both b4.1/rb5 compatibility.

Additionally, these avids are slightly broader overall, from memory around 1mm inwards on the inner edge and maybe 0.5mm inwards on the outer edge. This means at absolute full compression the wheel will rub the shock eyelet. You can't really space it out either as you won't have enough thread for even a serrated.
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Old 11-06-2012, 06:54 PM   #2419
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Default RB6 all the way

Quote:
Originally Posted by jpcopeland1 View Post
+1.... The 22 is a joke out of the box compared to the RB6 out of the box.
Honestly, the RB6 could be the best handling 2wd car, EVER.
Its simply awesome!
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Old 11-06-2012, 10:07 PM   #2420
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Originally Posted by t8rtot View Post
what surface? and what gear diff?
Carpet surface and Ultimata SC RTR diff.
Pistons from. Ghea
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Old 11-06-2012, 10:11 PM   #2421
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ya but that thing really sucks !!!
What sucks with that ?
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Old 11-07-2012, 12:48 AM   #2422
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Appreciate if someone can give me some advise here.

If I'm using mid motor, and want to use the aluminum rear suspesnion holder, which one should I use? is it the KYOUMW515GM or the KYOUMW512GM?

What is the other one for?

Same for this, KYOUMW511GM and KYOUMW514GM?

If I'm using rear motor, I guess I should be using KYOUMW511GM and KYOUMW515GM?

If I'm using mid motor, I suppose to use KYOUMW514GM and KYOUMW512GM, is that how it work?
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Old 11-07-2012, 01:40 AM   #2423
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Originally Posted by freeteeanyone View Post
Appreciate if someone can give me some advise here.

If I'm using mid motor, and want to use the aluminum rear suspesnion holder, which one should I use? is it the KYOUMW515GM or the KYOUMW512GM?

What is the other one for?

Same for this, KYOUMW511GM and KYOUMW514GM ?

If I'm using rear motor, I guess I should be using KYOUMW511GM and KYOUMW515GM?

If I'm using mid motor, I suppose to use KYOUMW514GM and KYOUMW512GM, is that how it work?
the 2 options are sets KYOUMW514GM,KYOUMW515GM wide mount KYOUMW511GM,KYOUMW512GM narrow mount
recommended setups use wide
cheers
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Old 11-07-2012, 01:51 AM   #2424
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Thank you sir!

But does it make any different if I'm using rear or mid motor setup?

I see that kyshow provide a separate mount for mid.

Quote:
Originally Posted by jordy-15 View Post
the 2 options are sets KYOUMW514GM,KYOUMW515GM wide mount KYOUMW511GM,KYOUMW512GM narrow mount
recommended setups use wide
cheers
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Old 11-07-2012, 05:06 AM   #2425
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Quote:
Originally Posted by freeteeanyone View Post
Thank you sir!

But does it make any different if I'm using rear or mid motor setup?

I see that kyshow provide a separate mount for mid.
yes use the one that comes with the kit or it won't work right . kyosho dose not make a aluminum one for it yet . using the plastic ones i have not had a problem yet .RF2 mounts for mid

Last edited by fastestwon; 11-07-2012 at 05:44 AM.
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Old 11-07-2012, 08:21 AM   #2426
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Okay, I'm thinking of picking up a RB6 in the next couple of weeks.
(Currently, my only vehicle is the Losi 22T.)

I'm thinking of using a 17.5 SchuurSpeed motor and Orion Pro ESC in it as well. Any thoughts on the combination or other advice on things for the RB6?
(I have a 17.5 SchuurSpeed and Tekin RS ESC in my 22T; the SchuurSpeed seems to be a great motor in the 22T.)

Thanks for any info or suggestions.


Allen
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Old 11-07-2012, 08:24 AM   #2427
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Quote:
Originally Posted by fastestwon View Post
yes use the one that comes with the kit or it won't work right . kyosho dose not make a aluminum one for it yet . using the plastic ones i have not had a problem yet .RF2 mounts for mid
I run the RF block in mid motor, but i run on dirt, i found i could drive the car more aggressively out of the corner
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Old 11-07-2012, 08:42 AM   #2428
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Quote:
Originally Posted by abinder View Post
Okay, I'm thinking of picking up a RB6 in the next couple of weeks.
(Currently, my only vehicle is the Losi 22T.)

I'm thinking of using a 17.5 SchuurSpeed motor and Orion Pro ESC in it as well. Any thoughts on the combination or other advice on things for the RB6?
(I have a 17.5 SchuurSpeed and Tekin RS ESC in my 22T; the SchuurSpeed seems to be a great motor in the 22T.)

Thanks for any info or suggestions.


Allen
to be honest, i'd go to the RB6s petit rc page and look at the tips and setups there, that will fill you in and where we are up to the present, and of course reading thru this thread (start about the same time the car became available ) its solid out of the box, has a ton of steering we're dialing out with caster blocks.

Enjoy the build
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Old 11-07-2012, 08:51 AM   #2429
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Quote:
Originally Posted by PiRo View Post
What sucks with that ?
koyosho usually makes very good stuff but anyone who has really built one of these and ran one for any length of time will know what i am talking about......
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Old 11-07-2012, 10:13 AM   #2430
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Hi everyone I need some advise for my RB6 assemble
As I very new to 2wd buggy I would like to know wat is
e different between rear mount & mid mount of e motor
Like which mount is better on wat track or which is better
for loose n less grip track also which battery type is better
stick ,shorty or saddle pack .thank u

Happy R/C
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