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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 11-06-2012, 10:01 AM   #2401
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Originally Posted by Cpt.America View Post
yeah, but that's not saying very much.

















Right on. This car is a pretty big leap forward for aluminums, I think the first car that did it 'right' among the new crop of buggies.
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Old 11-06-2012, 10:26 AM   #2402
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i'd expect no less from Big Red.

while i'm on here, is there any one that is running AKA Vektors on indoor dirt/clay? we have such good traction that we can really run any indoor type of tire. its all about finding the feel your looking for, right now i have barcodes front and rear and the car is good but i like to free up the rear.

the rear is glued and isn't slowing the car down any but i like to brake late have the car rotate more (not quite drift) thru the corner rather than braking early like the pack.. i find my laps are faster and more consistant when i run this way, and i'm able to take more positions.

i guess its just a feel thing.. i think my setup is spot on.
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Old 11-06-2012, 10:48 AM   #2403
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Any other parts on this car been breaking except the wheels?
I know Kyosho wheels are not very durable. Heck people around here
were breaking the wheel on the Ultima SCT, it's mainly the back wheels that break. After a hard landing kiss the back wheel goodbye.
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Old 11-06-2012, 11:02 AM   #2404
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I have never even bent a stock kyosho wheel...What are you guys hitting...????
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Old 11-06-2012, 11:12 AM   #2405
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Just some swipes at pipes sometimes the wall/paneling if indoors. Hits which any wheel should shrug off normally. I have had chunks of plastic come off of the many K wheels I got. Like big gashes and stuff. Never cracked one though, I feel its nylon is too soft not brittle at all.
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Old 11-06-2012, 11:14 AM   #2406
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Does this car handle like the 22? The 22 was terrible, really loose. The layout looks very similar thats my reason for asking.
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Old 11-06-2012, 11:27 AM   #2407
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Quote:
Originally Posted by putte_Rolf View Post
the gear diff from the SC fits
ya but that thing really sucks !!!
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Old 11-06-2012, 11:28 AM   #2408
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Quote:
Originally Posted by mikeyscott View Post
What size holes are the kit 5 hole pistons.
Why not just mail me Mike?

5x1.3 by the way
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Old 11-06-2012, 11:30 AM   #2409
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I have never even bent a stock kyosho wheel...What are you guys hitting...????
Those metal stakes that hold down our pipe. There is also a huge metal poll in the middle of the track that holds the roof up - I've probably hit that a couple of times.

But of course, those were my fault. My other wheels, that did not hit immovable objects, are just fine.
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Old 11-06-2012, 11:32 AM   #2410
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Quote:
Originally Posted by BIGTIME View Post
Does this car handle like the 22? The 22 was terrible, really loose. The layout looks very similar thats my reason for asking.
this car is not even in the same category as the 22 no offense RB6 way better
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Old 11-06-2012, 11:38 AM   #2411
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Quote:
Originally Posted by aloksatoor View Post
Just some swipes at pipes sometimes the wall/paneling if indoors. Hits which any wheel should shrug off normally. I have had chunks of plastic come off of the many K wheels I got. Like big gashes and stuff. Never cracked one though, I feel its nylon is too soft not brittle at all.
Soft nylon = more flex = more traction
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Old 11-06-2012, 11:40 AM   #2412
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Quote:
Originally Posted by Zach Phillips View Post
No. There is no location for the anti roll bar to mount.
I run them on my FS2sp.

Used the threaded 5.8mm balls from the touring car shock tops (can't remember the number) screwed inside the front of the arm and a short shock bottom on the ARB drop link.

The RB6 UM713 rear arms allow a very interesting tuning option on the ZX5-FS2sp ... remember how sensitive this car is to wheelbase!!

I certainly won't b going back to LAW43 arms!
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Old 11-06-2012, 11:45 AM   #2413
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this car is not even in the same category as the 22 no offense RB6 way better
I knew it was better. Heck I was gonna use it just in case I had to run with a fleet of 22's one day. Id be the ultimate car against them.
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Old 11-06-2012, 11:52 AM   #2414
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Default MM in low grip

My home astroturf track (Kidderminster, Uk) is like driving on ice when it's wet but with the RB6 in MM and a few tweaks it was able to drive into & out of the turns with the best of the RM cars in mod (we don't race stock classes in the UK). No other mid motor car was putting the power down as well.

Reason I mention this is the guy running MM on clay might not be as mad as some of you guys think ... try it you, might be shocked.

I was going to change to RM for the first qualifier as it was SO slippery but ran out of time ... a few quick tweaks, just the usual stuff you'd do to chase traction and drop front end bite, and she was awesome.

RB6 just keeps getting better and better!
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Old 11-06-2012, 12:26 PM   #2415
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Quote:
Originally Posted by ???E-Racer View Post
Any other parts on this car been breaking except the wheels?
In the years I have been racing, Iv never seen or even heard of a kyosho RB5/6 wheel bending, breaking, cracking, or going out of round.

Quote:
Originally Posted by BIGTIME View Post
Does this car handle like the 22? The 22 was terrible, really loose. The layout looks very similar thats my reason for asking.
It handles NOTHING like a 22.
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