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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 12-09-2012, 03:00 PM   #3256
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Originally Posted by cnelson3 View Post
Do u really have the 2mm spaced behind the arms on the toe block hinge pins? I was thinking about going back 1mm to see how it would respond.
Yes I've run them in front and it was good also. On our current layout we have a lot of 180s so I pushed them forward.
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Old 12-09-2012, 03:49 PM   #3257
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Yes I've run them behind and it was good also. On our current layout we havens lot of 180s so I pushed them forward.
Exactly why I was thinking about moving the arms forward. I race on a tight 180 styled track. Good to know. Thanks.
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Old 12-09-2012, 03:57 PM   #3258
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Are you guys putting the 2mm spacers behind the rear hanger? Hinge pin?


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Originally Posted by cnelson3 View Post
Exactly why I was thinking about moving the arms forward. I race on a tight 180 styled track. Good to know. Thanks.
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Old 12-09-2012, 05:34 PM   #3259
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Are you guys putting the 2mm spacers behind the rear hanger? Hinge pin?
I haven't yet but king has and he likes it. i'll post my results when i try it.
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Old 12-09-2012, 05:58 PM   #3260
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Hey bro, welcome. I just got started too. 1/8 servo are find and I'm using them too.

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Originally Posted by evolution03 View Post
Im just getting in to running 1/10th scale. What servos are you guys running in your rb6 ? All my servos are for my 1/8 scale cars im sure they will be over powered.
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Old 12-09-2012, 07:25 PM   #3261
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C,

Behind the rear hub? I dont know how a 2mm would fit behind the rear hangers.


Thanks,
Rocky

Quote:
Originally Posted by cnelson3 View Post
I haven't yet but king has and he likes it. i'll post my results when i try it.
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Old 12-09-2012, 07:55 PM   #3262
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C,

Behind the rear hub? I dont know how a 2mm would fit behind the rear hangers.


Thanks,
Rocky
the hinge pins that connect the toe blocks have a 2 mm spacer in front of the arms standard. King posted a set up sheet that showed that he put the 2mm spacer behind the arms on those hinge pins thereby moving the arms forward. Not talking about the hub placement at all. I'm interested in what this will do. I have a feeling about what is going to happen but i want to give it a shot.
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Old 12-09-2012, 10:57 PM   #3263
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Got it! Thanks! long weekend

Rocky


Quote:
Originally Posted by cnelson3 View Post
the hinge pins that connect the toe blocks have a 2 mm spacer in front of the arms standard. King posted a set up sheet that showed that he put the 2mm spacer behind the arms on those hinge pins thereby moving the arms forward. Not talking about the hub placement at all. I'm interested in what this will do. I have a feeling about what is going to happen but i want to give it a shot.
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Old 12-10-2012, 05:53 AM   #3264
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Well I tried the new Triad slipper yesterday. While I was at it i rebuilt the diff. Man I have been struggling with diffs lately. They just don't hold up and I figured I was doing something wrong in the build/break in process.

I had Cody Turner help me and, teach me and make sure I was doing everything right. What a difference. The whole night the car ran great with really good consistency. I am not all that good but a the Triad is nice because it seems to stay adjusted and consistent throughout each race and the entire night.

Having a dialed and adjusted diff and slipper makes all the difference in the world especially for a sportsman.

Thanks to Cody. He is the real deal and Kyosho should feel lucky to have him representing their brand.
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Old 12-10-2012, 07:11 AM   #3265
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Originally Posted by goin2drt View Post
Well I tried the new Triad slipper yesterday. While I was at it i rebuilt the diff. Man I have been struggling with diffs lately. They just don't hold up and I figured I was doing something wrong in the build/break in process.

I had Cody Turner help me and, teach me and make sure I was doing everything right. What a difference. The whole night the car ran great with really good consistency. I am not all that good but a the Triad is nice because it seems to stay adjusted and consistent throughout each race and the entire night.

Having a dialed and adjusted diff and slipper makes all the difference in the world especially for a sportsman.

Thanks to Cody. He is the real deal and Kyosho should feel lucky to have him representing their brand.
The other thing to note was the spur size. I have been running 76/21 and when I purchase my Triad I could not get the 76 so I had to go with 75. That took a little adjusting and I did not have time to get it perfect for me by the end of the night. I ended up at 76/23 but I still don't like it.
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Old 12-10-2012, 07:57 AM   #3266
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Default 5.8 Shock Ball

It seems like the 5.8 shock ball that goes in to the shock caps fit a little loose in the shock cap holes. Are there shock balls that actually fit/snap in to the shock cap holes?
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Old 12-10-2012, 09:01 AM   #3267
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I am still considering making a switch from the B4.1 to the RB6. Aside from the quality of the car and the additional adjustment features, what can I expect from the feel/performance of the car compared to the B4.1? Given my limited skills, I am fairly comfortable with the AE.

This could be a significant change for me, as my daughter races buggy as well and she'll want one too.
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Old 12-10-2012, 09:24 AM   #3268
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I am still considering making a switch from the B4.1 to the RB6. Aside from the quality of the car and the additional adjustment features, what can I expect from the feel/performance of the car compared to the B4.1? Given my limited skills, I am fairly comfortable with the AE.

This could be a significant change for me, as my daughter races buggy as well and she'll want one too.
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Old 12-10-2012, 09:27 AM   #3269
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Originally Posted by x7tristan View Post
It seems like the 5.8 shock ball that goes in to the shock caps fit a little loose in the shock cap holes. Are there shock balls that actually fit/snap in to the shock cap holes?
This was covered at length earlier in the thread if you want to read more.
Yes, the balls fit loosly in the shock until you tighten up the nut and expand the ball. Use an alum. nut and tighten it to the point where the shock stays on but doesn't bind. Works fine.
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Old 12-10-2012, 10:11 AM   #3270
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Default Receiver Interference?

I haven't had the chance to run my RB6 yet, so I was wondering if anyone has had issues with wiring the battery connectors right over the receiver? I'm wondering if doing so will cause some interference.

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