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Kyosho Ultima RB6 & RB6.6 Car Thread

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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech ForumsThread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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 09-02-2016, 04:41 PM
  #13651  
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for those running a front wing, what mounts are you using?
Sorry should say what wing mounts up correctly not seeing an option for the rb6.6 or rb6? Am I just missing it
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Old 09-02-2016, 05:18 PM
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Originally Posted by motobigalow
for those running a front wing, what mounts are you using?
Sorry should say what wing mounts up correctly not seeing an option for the rb6.6 or rb6? Am I just missing it
I ran a jconcepts finnisher wing made for the B5, mounted via the to shock mounts. Just have to line up The holes.

Other way I ran it was by running a 4mm longer bottom shock tower screw (the one that mounts the tower to the bulkhead) and 4mm with of spacers. You then mount the wing in front of the tower, with the back of the wing screwed to it.
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Old 09-02-2016, 05:41 PM
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JN2 Desgines wing mounts. I know the guy personally and have used his mounts with good results.
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Old 09-02-2016, 07:02 PM
  #13654  
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Originally Posted by motobigalow
for those running a front wing, what mounts are you using?
Sorry should say what wing mounts up correctly not seeing an option for the rb6.6 or rb6? Am I just missing it
Check the wiki up top, pro-line one listed.
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Old 09-03-2016, 05:05 PM
  #13655  
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Anyone use the composite arms for the rb6? Thoughts? Worth it? What about the composite shock towers?

Thx
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Old 09-03-2016, 10:37 PM
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I run all composite parts in my second RB6 which I only use on carpet/astro. These parts are lighter and flex less so I have found that help the way the car handles on high traction surface.

They are also lighter so if you run stock you will lose a couple og grams too
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Old 09-03-2016, 11:05 PM
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Originally Posted by nitroargi
I run all composite parts in my second RB6 which I only use on carpet/astro. These parts are lighter and flex less so I have found that help the way the car handles on high traction surface.

They are also lighter so if you run stock you will lose a couple og grams too
How's the durability? This will be for med- high bite clay track.
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Old 09-04-2016, 09:21 PM
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Originally Posted by teeforb
How's the durability? This will be for med- high bite clay track.
I run on that exact surface with all composite parts and haven't had a single issue. Also I don't crash much either which helps.
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Old 09-04-2016, 09:26 PM
  #13659  
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Originally Posted by likea45
I run on that exact surface with all composite parts and haven't had a single issue. Also I don't crash much either which helps.
Did you lose any grip? How does it perform compared to stock arms?
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Old 09-04-2016, 09:59 PM
  #13660  
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Can I use the rb6 upgrades like exotek front shock tower And all Kyosho aluminum upgrades. ????
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Old 09-05-2016, 06:30 AM
  #13661  
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Originally Posted by ProfessorX
Can I use the rb6 upgrades like exotek front shock tower And all Kyosho aluminum upgrades. ????
Everything should work. Main changes are in the transmission options.
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Old 09-05-2016, 01:34 PM
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Originally Posted by heyscottn
Everything should work. Main changes are in the transmission options.
One more thing will it change the geamatry ??
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Old 09-06-2016, 11:05 AM
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Originally Posted by ProfessorX
One more thing will it change the geamatry ??
I'm not sure about your exact question, but probably no. The chassis changed slightly (the sides and side rails), but as far as I know all of the geometry is the same.
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Old 09-06-2016, 12:19 PM
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everything is the same... just a long chassis. Front end, zero change. rear end, zero change except laydown w/ FR suspension hold and option or 3 gear.
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Old 09-06-2016, 12:21 PM
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Originally Posted by teeforb
everything is the same... just a long chassis. Front end, zero change. rear end, zero change except laydown w/ FR suspension hold and option or 3 gear.
Chassis length didn't change.
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