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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 09-26-2013, 08:38 AM   #8266
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Quote:
Originally Posted by Tyler101 View Post
Anybody know what is the part number for a gear diff that drops in? I assume maybe out of the RTR SC....
correct
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Old 09-26-2013, 09:02 AM   #8267
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Quote:
Originally Posted by Tyler101 View Post
Anybody know what is the part number for a gear diff that drops in? I assume maybe out of the RTR SC....
I have yet to find a part number for a complete gear diff. You will have to buy the parts individually and put it together.

UM605
UM611
UM610
UM612
UM613
ORG045S
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Old 09-26-2013, 09:05 AM   #8268
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I don't believe there is just 1 part number for the gear diff like there is for the ball diff (KYOUMW602)

I think you will need to assemble one out of the following parts:
KYOUM605
KYOUM610 or KYOVZW424
KYOUM611
KYOUM612
KYOUM613
KYOORG045S

I don't know but I assume Tebo would run the VZW424 bevel gears over the UM610 ones.
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Old 09-26-2013, 10:50 AM   #8269
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Quote:
Originally Posted by gelshocker View Post
+
rear 521-1 arms
rear outer hinge pins

Everything else in the box, which I think is pretty cool.
Outer hinge pins not necessary, just open up the small outer hole on the flat wishbones with a reamer or drill bit and you can use the std RB6 bits, with Kyosho prices every little helps!

Bloody love my 6
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Old 09-26-2013, 11:35 AM   #8270
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Quote:
Originally Posted by adam_u View Post
Outer hinge pins not necessary, just open up the small outer hole on the flat wishbones with a reamer or drill bit and you can use the std RB6 bits, with Kyosho prices every little helps!

Bloody love my 6
I did the same thing. Body reamer + 2 mm spacers on ends and done. Having said that, I much prefer the 2.5mm capture screws as those m3 nuts are just the odd man out on the car.
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Old 09-26-2013, 02:55 PM   #8271
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Quote:
Originally Posted by orangutanracer View Post
I don't believe there is just 1 part number for the gear diff like there is for the ball diff (KYOUMW602)

I think you will need to assemble one out of the following parts:
KYOUM605
KYOUM610 or KYOVZW424
KYOUM611
KYOUM612
KYOUM613
KYOORG045S

I don't know but I assume Tebo would run the VZW424 bevel gears over the UM610 ones.
Does anybody know where you can buy VZW424 in the US?
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Old 09-26-2013, 05:40 PM   #8272
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Here is the winning setup right off the Kyosho site.

http://www.kyoshoamerica.com/assets/...ldChampion.pdf
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Old 09-26-2013, 06:40 PM   #8273
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Yup just posted it on my site too http://www.thebigrc.com/?p=4894
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Old 09-27-2013, 12:43 AM   #8274
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why does the setup sheet say 7.5T when he was running a 6.5T?
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Old 09-27-2013, 05:41 AM   #8275
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Quote:
Originally Posted by Lonestar View Post
why does the setup sheet say 7.5T when he was running a 6.5T?
Even Jared's own blog said he had a 7.5 in the car.

Here you can see the 7.5T on the endbell of the motor.

http://www.neobuggy.net/wp-content/u...9/AT4_8462.jpg
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Old 09-27-2013, 06:16 AM   #8276
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That picture seems to be taken on a different day. I say that because if you look at his front tires they are not ribbed.

In addition, if you look at this image you will see it isn't a 7.5. So I would bet that they were playing with different motors to see which ones they liked best on the sugar track.

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Old 09-27-2013, 06:45 AM   #8277
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Thank you.
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Old 09-27-2013, 06:49 AM   #8278
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Quote:
Originally Posted by offroad dude View Post
Does anybody know where you can buy VZW424 in the US?
here for instance... makes it a VERY expensive diff

EDIT : sorry, just saw it's BO'ed... still crazy expensive though!
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Old 09-27-2013, 07:04 AM   #8279
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I would think that he was actually running a 7.5. His setup sheets have said 7.5 for awhile.

The Neobuggy pic was taken on Sunday before practice.
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Old 09-27-2013, 07:48 AM   #8280
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Default Gear diff

Anybody using the gear diff for 17.5? If so, what oil are you using?
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