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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 01-13-2014, 07:48 PM   #9376
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Originally Posted by Speedychris22 View Post
On inside 5x10 on outside u can use 5x10 5x11 or 5x13
I went with 5x13 but have 5x11 as backup
Nice, thanks.
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Old 01-13-2014, 09:20 PM   #9377
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On inside 5x10 on outside u can use 5x10 5x11 or 5x13
I went with 5x13 but have 5x11 as backup
So when I order the v2 .5 rear hubs I should order the 5x13bearings?
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Old 01-13-2014, 09:52 PM   #9378
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So when I order the v2 .5 rear hubs I should order the 5x13bearings?
Yes
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Old 01-14-2014, 01:23 AM   #9379
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My RB6 in Mid-Motor. I ran it in rear motor this weekend but everyone I guess is now running mid. Funny while back I had my durango in mid motor and everyone made fun of it "Mid is only for Euro"... Who's the wise guy now

On the rear I put about 1/3 of a rear wing upside down to kinda cover up the area of the car that is exposed. I"ll have to do alittle bit better of a job on it next time...
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Kyosho Ultima RB6 & RB6.6 Car Thread-0114140019.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-0114140019a.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-0114140021.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-0114140036.jpg  
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Old 01-14-2014, 04:38 AM   #9380
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Originally Posted by nolimit208 View Post
My RB6 in Mid-Motor. I ran it in rear motor this weekend but everyone I guess is now running mid. Funny while back I had my durango in mid motor and everyone made fun of it "Mid is only for Euro"... Who's the wise guy now

On the rear I put about 1/3 of a rear wing upside down to kinda cover up the area of the car that is exposed. I"ll have to do alittle bit better of a job on it next time...
Looks good but I would take that piece off. U want the motor to try as much air flow as possible.
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Old 01-15-2014, 03:05 AM   #9381
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Has anyone tried the 3x1.4 pistons and 2x1.6?
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Old 01-15-2014, 04:34 AM   #9382
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Has anyone tried the 3x1.4 pistons and 2x1.6?
I am using them on my latest setup, I really like the feel the provided. Seemed to give me the pack I was getting from the 4x1.3, but without the feel of being bouncy or too stiff.

You can view my setup on my website, with links to option parts used
http://jasondias.com/2014/01/14/kyos...etup-for-ocrc/

or Kyosho America
http://www.kyoshoamerica.com/assets/...nDias_OCRC.pdf
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Old 01-15-2014, 05:34 AM   #9383
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Questions?? Light Weight Chassis

Does anyone know when these new parts like the light weight chassis ,mid weights going to be available to the paying public ?????
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Old 01-15-2014, 08:13 AM   #9384
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Originally Posted by Speedychris22 View Post
Has anyone tried the 3x1.4 pistons and 2x1.6?
I've tried them a few times against the 4x1.3s. For me and my track they were a little too stiff due to the initial pack being stiffer than the 4x1.3s. My track never has any larger jumps, so the extra pack wasn't needed and it made the car feel a bit twitchier.

In talking to Tebo he mentioned:

5 hole stock pistons for looser to medium bite
4x1.3s for medium to high
3x1.4 and 2x1.6 for relatively high bite tracks
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Old 01-15-2014, 08:16 AM   #9385
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i used these pistons for the first time lastnight, put them in after the first heat.. much better pack than the 4 hole, no slapping and better traction when landing a jump and turning on power. this is a setup that the associated guys run at my track and just works great for bb buggy shocks.

*4 hole avid pistons for sale
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Old 01-15-2014, 08:45 AM   #9386
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Does anyone know when these new parts like the light weight chassis ,mid weights going to be available to the paying public ?????
Already availabe...
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Old 01-15-2014, 09:56 AM   #9387
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jason, i saw your blog... very helpful...how are you holding down your battery w/o the holder?

are all the carbon parts like shock towers, arms and knuckles necessary? does that affect the peformance greatly or would the stock parts suffice?

I am making a trip out to CA at the end of the month and plan to visit OCRC for a wed night club race.

thanks in advance...

Justin
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Old 01-15-2014, 10:31 AM   #9388
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Originally Posted by ryanpatrickgore View Post
i used these pistons for the first time lastnight, put them in after the first heat.. much better pack than the 4 hole, no slapping and better traction when landing a jump and turning on power. this is a setup that the associated guys run at my track and just works great for bb buggy shocks.

*4 hole avid pistons for sale
Which pistons?
whats your track conditions
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Old 01-15-2014, 10:36 AM   #9389
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Originally Posted by nickdawg18 View Post
i know that with the stock hangers, the 521-1 arms dont use any hinge pin shims.
If I may update on the 521-1 x new alum suspension hangers binding issue: I removed the 0.2mm shim, fresh hinge pins, and steel bushings. Now only the right rear arm binds slightly. After attaching the turnbuckle it's ok. Hopefully it's loosen up more after a few packs. Thanks the ideas. Cheers,
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Old 01-15-2014, 12:27 PM   #9390
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Originally Posted by K_King View Post
I've tried them a few times against the 4x1.3s. For me and my track they were a little too stiff due to the initial pack being stiffer than the 4x1.3s. My track never has any larger jumps, so the extra pack wasn't needed and it made the car feel a bit twitchier.

In talking to Tebo he mentioned:

5 hole stock pistons for looser to medium bite
4x1.3s for medium to high
3x1.4 and 2x1.6 for relatively high bite tracks
Have a link to the 5 hole piston?
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Last edited by skrichter; 01-15-2014 at 12:39 PM.
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