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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
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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 12-31-2013, 07:47 AM
  #9196  
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Originally Posted by skhadka17
Yeah, that's the front plate which I've been buying, I think it also comes stock cause that was the same part number in the manual, I tried bending them back but it's very difficult, has anyone tried reinforcing them or has an idea as to how to?
They actually revised the part and the new part number has a "b" at the end of it, KYOUM720B. I believe they discontinued the old one as it was bending but there maybe some still out there that are available to purchase.

You can tell if you have the new one as it has a mark on the top of it whereas the original piece does not.
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Old 12-31-2013, 03:10 PM
  #9197  
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Are there any aluminum or steel pivot balls for the shock mounts available? I find it pretty disappointing the amount of slop in the shock mount bushings. I thought this was Kyosho?

There is noticeable play when you lift the kit from the wheels and place it back down on the top and bottom of the shocks. I have been able to find threaded bushings for the upper links that connect to the shock tower, but nothing for the lower plastic shock arms.
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Old 12-31-2013, 03:10 PM
  #9198  
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Double post.
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Old 12-31-2013, 03:24 PM
  #9199  
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Originally Posted by codeman
Are there any aluminum or steel pivot balls for the shock mounts available? I find it pretty disappointing the amount of slop in the shock mount bushings. I thought this was Kyosho?

There is noticeable play when you lift the kit from the wheels and place it back down on the top and bottom of the shocks. I have been able to find threaded bushings for the upper links that connect to the shock tower, but nothing for the lower plastic shock arms.
here's some aluminum shock mounts for the caps.
http://www.exotekracing.com/rb6-shock-post-set/

i dont know how your getting so much slop in your lower eyelets.
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Old 12-31-2013, 09:46 PM
  #9200  
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do you guys use close cell foam on front tires on MM set up?
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Old 12-31-2013, 10:24 PM
  #9201  
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Any reviews on the mip puck kit for the rb6? Wanna pimp mine out for 17.5 and this looks like a great kit.
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Old 12-31-2013, 10:35 PM
  #9202  
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Originally Posted by iMarky
do you guys use close cell foam on front tires on MM set up?
I almost always do. Red AKA foams. Outdoor, I've played with open cell foams some. Indoor, 99% closed cells for me.
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Old 12-31-2013, 10:42 PM
  #9203  
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Originally Posted by Teufel Racing
I almost always do. Red AKA foams. Outdoor, I've played with open cell foams some. Indoor, 99% closed cells for me.
i see.. ill be indoors only..i have a red aka and i didnt like it on my losi 22 RM its still new im going to yank it out and put it on my RB6 MM set up.. just had so much push on that set up.
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Old 12-31-2013, 11:32 PM
  #9204  
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Originally Posted by iMarky
i see.. ill be indoors only..i have a red aka and i didnt like it on my losi 22 RM its still new im going to yank it out and put it on my RB6 MM set up.. just had so much push on that set up.
You need to run the red AKA closed cell foams in a little for them to be at optimal operating condition. They really come in after about 5 or 6 run cycles. The first few runs on the new foams feel like the tire is not "in" the track, but after you break them in, they are money. They are the best foams on the market. Just stick with them until they get good.
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Old 12-31-2013, 11:56 PM
  #9205  
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I updated my previous set. Just noticed I had reversed the steering rack.

https://www.dropbox.com/s/1fnhs8sq6f...Dec%202013.pdf
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Old 01-01-2014, 04:31 AM
  #9206  
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Hi guys, I'm looking to buy a NIB RB5 WC. PM if you have one....thanks
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Old 01-01-2014, 04:59 AM
  #9207  
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Originally Posted by K_King
I updated my previous set. Just noticed I had reversed the steering rack.

https://www.dropbox.com/s/1fnhs8sq6f...Dec%202013.pdf
Kevin what's the difference with the 97050 ball studs in the rear vs the stock ones?
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Old 01-01-2014, 06:14 AM
  #9208  
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Still loving my car! Made a few set up changes for high bite indoor tomorrow and its ready! Will start working on an mm set up soon for the first time!
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Old 01-01-2014, 06:31 AM
  #9209  
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just purchased an used RB6. compared to my dex210 (which is newer), the RB6 has a fair amount of slop. i notice slop at the knuckle/hub carrier, suspension arm hinge, and steering rack.

what amount of slop, if any, is present in a newly built kit? right now, i'm planning on replacing the entire front end (plus pins). but wondering i should start with the steering rack and knuckle/hub carrier first.
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Old 01-01-2014, 06:57 AM
  #9210  
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Originally Posted by chillindrdude
just purchased an used RB6. compared to my dex210 (which is newer), the RB6 has a fair amount of slop. i notice slop at the knuckle/hub carrier, suspension arm hinge, and steering rack.

what amount of slop, if any, is present in a newly built kit? right now, i'm planning on replacing the entire front end (plus pins). but wondering i should start with the steering rack and knuckle/hub carrier first.
I've built a few new RB6's recently and the slop when new is the same as my car which is over a year old. I wouldn't worry at all.
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