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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 05-28-2013, 07:04 PM   #6961
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yes. although some will tell you that there are small variances in the offsets of some rims.
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Old 05-28-2013, 07:04 PM   #6962
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Originally Posted by skengines View Post
This is my first K buggy and I don't regret my purchase.

All the parts look top notch and I will be starting my build this weekend. I've been running the AE buggy and Durango for the past few months, so I needed something different.
Awesome. I can't say anything bad about the way the AE drove. I just had a man crush on the RB6 from the first time I saw one

I've only had a few weekends with it and I really like it. I am on average 25 sec faster (over 6 min) than I was with my 4.2 and I am just starting to play with setups. Can't say how that is going to translate over the long haul, but so far so good.

I don't have the quantity of competition that you guys out west have, but I am lucky to have a couple of guys who are blazing fast to set the pace and race against. Just wish I could get more practice in.... that's what is killing me now.
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Old 05-28-2013, 07:07 PM   #6963
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It is because he have a lot of traction heros out in the west, lol. I actually can do well when the traction is crap, lol. When the traction comes up, I get spanked, lol. oh well.
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Old 05-28-2013, 07:08 PM   #6964
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Originally Posted by Team G Racing View Post
Are the wheels the same as the Associated buggy? Front and rears?
The front fit if you either chamfer the hex or space the hex out. Otherwise they hit the steering knuckle.

The rear fit ok, but couple of guys showed that they are about 2mm narrower. 4mm narrower overall is a big change. I personally switched over to KY rims.

What I suggest is use what rears you have but stock up on KY rims and start mounting all your new stuff on them. I would change fronts right away so you dont have to space out the hex.

Speaking of which, I have about 22 pairs of mounted tires that I need to sell now :P
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Old 05-28-2013, 07:10 PM   #6965
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Originally Posted by Bob Barry View Post
Awesome. I can't say anything bad about the way the AE drove. I just had a man crush on the RB6 from the first time I saw one

I've only had a few weekends with it and I really like it. I am on average 25 sec faster (over 6 min) than I was with my 4.2 and I am just starting to play with setups. Can't say how that is going to translate over the long haul, but so far so good.

I don't have the quantity of competition that you guys out west have, but I am lucky to have a couple of guys who are blazing fast to set the pace and race against. Just wish I could get more practice in.... that's what is killing me now.
I also gained about 26 seconds over 6 minutes when I ran the rb6. Its a really nice car to drive. I dunno about the cost over a year though. I dont replace parts when ever they get a little slop, lol. I only replace bent or broken parts. Which means mostly a-arms and motor plates.
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Old 05-28-2013, 07:10 PM   #6966
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(a while back) kdub of Avid said they are working on new hexes for the Rb6 to work better with the Avid rims.
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Old 05-28-2013, 07:10 PM   #6967
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Originally Posted by Bob Barry View Post
The front fit if you either chamfer the hex or space the hex out. Otherwise they hit the steering knuckle.

The rear fit ok, but couple of guys showed that they are about 2mm narrower. 4mm narrower overall is a big change. I personally switched over to KY rims.

What I suggest is use what rears you have but stock up on KY rims and start mounting all your new stuff on them. I would change fronts right away so you dont have to space out the hex.

Speaking of which, I have about 22 pairs of mounted tires that I need to sell now :P

I run borrego rims.
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Old 05-28-2013, 07:11 PM   #6968
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Originally Posted by Wildcat1971 View Post
yes. although some will tell you that there are small variances in the offsets of some rims.
Tried some JC mono rears and the rim is loose when mounted. Definately need serrated nuts. If you insert some Tamiya wheel spacers (comes in 0.5 and 1mm) to correct the offset there's not enough thread for the serrated nut. Stay with K rims.
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Old 05-28-2013, 07:11 PM   #6969
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I just looked on DE's websight and there rims fit Rb6, Rb5, and Associated, so I think I am good?
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Old 05-28-2013, 07:12 PM   #6970
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I thought the jc were the main issues. The aka, avid rear and DE were fine. Also, I ran the aka up front without issue.
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Old 05-28-2013, 07:15 PM   #6971
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Peopel are basically saying that different companies dont have the exact same offset as the K wheels. Which means, they probably were not consistent on the b4 either. They are also talking about the B4 JC wheels. Not the JC tlr22 wheels which are slightly different. I doubt most will be able to feel the different though.
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Old 05-28-2013, 07:56 PM   #6972
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Originally Posted by mingoglia View Post
Would be cool if they built a new ST as well.
I am actually waiting for a SC truck based on the RB6 platform. Does anybody know something about it?

Im not thrilled about SC, but is the most popular class at my local track. There are somedays that there is not one buggy running but mine.
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Old 05-28-2013, 07:59 PM   #6973
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Some killer video of our local team driver running some smoking fast laps with his RB6 at Tacoma RC Raceway. I also put together his setup sheet along with close up photos, available here. I got a chance to drive it.. super dialed.
+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
Was curious to see this setup but apparently my iphone feels the need to just show me a blank setup sheet.
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Old 05-28-2013, 08:02 PM   #6974
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Originally Posted by caguilar4 View Post
I am actually waiting for a SC truck based on the RB6 platform. Does anybody know something about it?

Im not thrilled about SC, but is the most popular class at my local track. There are somedays that there is not one buggy running but mine.
The rumor is fourth quarter 2013.
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Old 05-28-2013, 08:42 PM   #6975
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Originally Posted by Wildcat1971 View Post
I thought the jc were the main issues. The aka, avid rear and DE were fine. Also, I ran the aka up front without issue.
I have a craptastic amount of Proline and JC rims... they are both a bit 'off' I actually preferred the Proline rims over the JC because of the recessed wheel nut and the JC have that ugly matte finish
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