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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 10-22-2012, 06:03 AM   #1891
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Default Chassis

Quote:
Originally Posted by wrightcs77 View Post
Ought to be interesting to see what people and kyosho say about the chassis denting and cracking
They will say "easily fixed,get a new one"

Will be running mine soon on a out door dirt track, will see what happens.
I have been until now running on carpet, no issues.
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Old 10-22-2012, 06:33 AM   #1892
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the aka wheel is not a different off set its just thicker where the axle goes thru
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Old 10-22-2012, 07:27 AM   #1893
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Quote:
Originally Posted by eper View Post
the aka wheel is not a different off set its just thicker where the axle goes thru
Maybe I'll try those next time...
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Old 10-22-2012, 07:48 AM   #1894
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Originally Posted by K_King View Post



That's what mine looks like. The aluminum parts are from my RB5 that I've had awhile, but you're really eating up your bumper and arms as well.
The track is kinda rough and very abrasive,running pink/red 35/30 and a shorty in the forward position. I thought about trying softer springs in he back but after seeing the cave in decided against it.
Oh and my ride height is 24/24.
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Old 10-22-2012, 08:02 AM   #1895
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Holy aluminum whatever way you look at it, it's not good!
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Old 10-22-2012, 09:11 AM   #1896
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Quote:
Originally Posted by powerslave View Post
Anyone else have this happen?this is after one club race on a blue groove track with no large jumps,maybe mine was machined to thin.
Ok,, yeah, there is an issue there where the case sits. But look at the bottom of your car man.. how can that be ONE race? No large jumps? My Rb5 looks dramatically better with a 8 months of racing 2 days a week on it.

Im not saying there isn't a defect in that chassis, but we aren't getting the whole story... something not adding up.
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Old 10-22-2012, 09:33 AM   #1897
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Blue groove concrete....Ok, back on track here. Something is odd. Looks like a potential issue for more than one happy Rb6 owner. Mine is not in front of me but is the chassis thinner in this area or all one thickness?
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Old 10-22-2012, 10:05 AM   #1898
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Originally Posted by Cpt.America View Post
Ok,, yeah, there is an issue there where the case sits. But look at the bottom of your car man.. how can that be ONE race? No large jumps? My Rb5 looks dramatically better with a 8 months of racing 2 days a week on it.

Im not saying there isn't a defect in that chassis, but we aren't getting the whole story... something not adding up.
The track is hard as cement,but I ran 2 practice packs,2 quals and the main.a little disappointed at this time but doesn't effect performance at this time.
I'm going to pull the case out and inspect from the top.
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Old 10-22-2012, 10:13 AM   #1899
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Wow. It will be interesting to see what is on the other side. Contact Kyosho yet?
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Old 10-22-2012, 10:23 AM   #1900
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Wow. It will be interesting to see what is on the other side. Contact Kyosho yet?
Was think about calling them,but wanted to see if anyone else has this issue. I wish I could always run on a perfect indoor clay track like WCRC but I like to support my local club racing.
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Old 10-22-2012, 10:27 AM   #1901
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Originally Posted by powerslave View Post
Was think about calling them,but wanted to see if anyone else has this issue. I wish I could always run on a perfect indoor clay track like WCRC but I like to support my local club racing.
Tracks like WCRC do not exist here on the East Coast at least in my area.

I would call Kyosho America asap. My 22 and DEX210 never had issues like that with the chassis. I can't believe I just put in a "semi" plug for them. People with this issue need to stick with the car and Kyosho. It is well worth it and I trust they will resolve it.
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Old 10-22-2012, 10:36 AM   #1902
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Quote:
Originally Posted by Posvar View Post
Tracks like WCRC do not exist here on the East Coast at least in my area.

I would call Kyosho America asap. My 22 and DEX210 never had issues like that with the chassis. I can't believe I just put in a "semi" plug for them. People with this issue need to stick with the car and Kyosho. It is well worth it and I trust they will resolve it.
I am gonna try contacting them,I have driven al the latest Buggys ang this is by far the best for me,I love the Kyosho parts quality, in fact just built the ZX5 FS2 SP, know that's a piece of art
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Old 10-22-2012, 10:50 AM   #1903
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Originally Posted by powerslave View Post
I am gonna try contacting them,I have driven al the latest Buggys ang this is by far the best for me,I love the Kyosho parts quality, in fact just built the ZX5 FS2 SP, know that's a piece of art
Just talked to Kyosho,gonna send them a pic.they were very helpfull,sounded like they will take care of me
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Old 10-22-2012, 10:55 AM   #1904
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Excellent.
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Old 10-22-2012, 11:20 AM   #1905
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tplate aint lookin so bad now eh . Maybe we can mod it to run it as a skid on the 6 (but it will mess up the ride height).
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