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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 10-29-2012, 10:38 AM   #2191
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Kyosho makes the wide alloy blocks as well, but they're expensive ($18/each IIRC).
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Old 10-29-2012, 10:54 AM   #2192
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Default new bodies

my new bodies
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Kyosho Ultima RB6 & RB6.6 Car Thread-imag0687.jpg  
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Old 10-29-2012, 11:09 AM   #2193
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Default Set up question

I see a lot of the driver's set-ups are using the wider rear suspension holders.
How does this make the car handle different versus using the narrow holders
and does it have any effect on what rear arm you run new gull wing arm or older WC arm in the rear? Answers Appreciated!
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Old 10-29-2012, 11:20 AM   #2194
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Quote:
Originally Posted by fastestwon View Post
managed to Qualify 3rd in A Main pulled off the win
Quote:
Originally Posted by fastestwon View Post
Well, no offense, but you didn't really win because one of your laps didn't count (shouldn't of). Intentional track cut at 0:33 seconds to take two positions. Track cut + no stop to give positions back = -1 lap.

But I digress... and it looks like everybody there is running the wrong tires. It looks SO loose. Having that low of traction would drive me nuts.
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Last edited by Cpt.America; 10-29-2012 at 11:38 AM.
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Old 10-29-2012, 11:27 AM   #2195
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that or too much motor.. 8.5s on a small-ish track.
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Old 10-29-2012, 11:32 AM   #2196
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Originally Posted by NTR View Post
Honestly, start with the stock setup, and put 35wt shock oil in the front and 27.5 in the rear. Then tune from there. You really just need to change a couple camber links after that.

Do you plan on making the trip out to fastlane raceway in blue springs any time soon?
I'd like to be able to come up there but couldn't say when at this point.

even with the weight difference, would a change of spring be necessary? what about caster?

i want to play around with the setup, obviously i'll have to but i also don't want to spend the next 4wks doing it just to be able to feel pseudo-comfortable if i can get a head start from you guys.

i'm going for it for this weekend though. wish me luck.
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Old 10-29-2012, 11:49 AM   #2197
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Originally Posted by Cpt.America View Post
TQ and win Sat night club racing in 17.5... car is unstoppable.
run mod likeyou said you was going to then see how unstoppable that car is! ae tqed an won mod buggy
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Old 10-29-2012, 11:53 AM   #2198
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run mod likeyou said you was going to then see how unstoppable that car is! ae tqed an won mod buggy
Prepping for the showdown in 17.5, you know that. With my stock motor, I would of finished 4th in mod, and I had more traffic. Not bad considering I was less than 1 lap down behind John and Ryan two factory team drivers running mod motors. And last I checked, this isn't an AE thread

Modified Buggy A Main
Cantrell, Jonathon. #4 27 8:10.323 17.626
walentia,john....... #2 27 8:17.962 17.530
Matesa, Ryan ..... #3 27 8:19.429 17.598
Collins, Brandon. #6 26 8:15.544 18.291
Story, Corby....... #5 25 8:09.504 17.992
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Old 10-29-2012, 11:54 AM   #2199
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But I digress... and it looks like everybody there is running the wrong tires. It looks SO loose. Having that low of traction would drive me nuts.
someone is spoiled
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Old 10-29-2012, 11:56 AM   #2200
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Prepping for the showdown in 17.5, you know that. With my stock motor, I would of finished 4th in mod, and I had more traffic.
run 17.5 in mod, you may become even faster, without lap traffic being an obstical, you could through down some flawless runs? just an idea?
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Old 10-29-2012, 12:03 PM   #2201
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someone is spoiled
All 3 of the tracks in this area all have unreal traction.. we are definitely spoiled.
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Old 10-29-2012, 12:07 PM   #2202
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Originally Posted by Cpt.America View Post
Prepping for the showdown in 17.5, you know that. With my stock motor, I would of finished 4th in mod, and I had more traffic. Not bad considering I was less than 1 lap down behind John and Ryan two factory team drivers running mod motors. And last I checked, this isn't an AE thread

Modified Buggy A Main
Cantrell, Jonathon. #4 27 8:10.323 17.626
walentia,john....... #2 27 8:17.962 17.530
Matesa, Ryan ..... #3 27 8:19.429 17.598
Collins, Brandon. #6 26 8:15.544 18.291
Story, Corby....... #5 25 8:09.504 17.992
now jus think where you could have been if you where really in that race?
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Old 10-29-2012, 12:11 PM   #2203
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Originally Posted by t8rtot View Post
I'd like to be able to come up there but couldn't say when at this point.

even with the weight difference, would a change of spring be necessary? what about caster?

i want to play around with the setup, obviously i'll have to but i also don't want to spend the next 4wks doing it just to be able to feel pseudo-comfortable if i can get a head start from you guys.

i'm going for it for this weekend though. wish me luck.
The big changes i have made:
Wc rear a arms, 30 degree total caster (0) on the hubs.
.5 degree hubs on the rear.
And i have some gold springs but i have not put them on yet ( for the rear)
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Old 10-29-2012, 12:32 PM   #2204
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Originally Posted by CanyonCarverR1 View Post
Front shock tower is pre-production?
Yes sir it is... However, this will be what the final production ones should look like. I know he has not updated his website as of yet, but if you do want one, just email him and he can get whatever you need out to you...
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Old 10-29-2012, 01:00 PM   #2205
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Yes sir it is... However, this will be what the final production ones should look like. I know he has not updated his website as of yet, but if you do want one, just email him and he can get whatever you need out to you...
This weekend should be a good test weekend, No back carbon shock tower yo?
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