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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 02-10-2014, 03:33 PM
  #9766  
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Originally Posted by pekow91
My local track just moved to a new location and the new track has a ton of grip. So I was thinking of switching over to mid motor. I know this has been discussed before, but whats a good starting point for a mid motor setup on a smaller/med indoor clay track. I checked the front page but all I got was rear motor setup. Any help would be great. I attached a link to the track on youtube.

http://www.youtube.com/watch?v=02FGtuAMD6g
http://www.petitrc.com/setup/kyosho/...CRC2014012426/
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Old 02-10-2014, 03:36 PM
  #9767  
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Originally Posted by glenng
Interesting. Was it just the behind the backplate part that fit? Or u even got a snug fit on front shaft part? If its the backplate part, maybe i need to try again and squeeze it on harder. I dont like putting too much pressure on the shaft out of fear of bending it. Also, did u have to remove the kyosho brass spacer? And if so did u shim the gap? And was the behind backplate fitment really snug/tight requiring force? Thanks Mike!
Did you ever get it to work?
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Old 02-10-2014, 05:02 PM
  #9768  
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Thanks for the help. I have been reading a lot on caster and anti squat. Is the thinking the same rm vs mm on anti squat and pro squat and off power steering. Thanks again.
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Old 02-10-2014, 07:13 PM
  #9769  
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Originally Posted by JiuHaWong
Did you ever get it to work?
nah, havent gotten to playing with it again
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Old 02-10-2014, 09:11 PM
  #9770  
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Originally Posted by Gitsum
Been searching for the lightweight chassis any news on where to get one in the states?
I saw one at OCRC Raceway in Huntington Beach. I don't know there mail-order policy but they for sure have one (as in 40 min ago).
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Old 02-10-2014, 10:04 PM
  #9771  
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Originally Posted by Kuya_Kimo
I saw one at OCRC Raceway in Huntington Beach. I don't know there mail-order policy but they for sure have one (as in 40 min ago).
Appreciate it I found one and it should be on its way.
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Old 02-10-2014, 10:05 PM
  #9772  
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Would wide hangers be like D inside on the adjustable hangers?
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Old 02-10-2014, 10:54 PM
  #9773  
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Originally Posted by Mxer59
Would wide hangers be like D inside on the adjustable hangers?
that would be narrow. wide would be b out, c out, d out
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Old 02-11-2014, 02:39 AM
  #9774  
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Originally Posted by Gitsum
Ummm yea....out of stock for a while now.
http://www.kyoshoamerica.com/Lightwe...7_p_22962.html
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Old 02-11-2014, 02:59 AM
  #9775  
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Originally Posted by Cfconcrete
Another question. I am using UMW705 and UMW706. Is B out and B out the same width and toe as the kit? What does c out and c out do? Thanks.
Yes, B out/B out, is the same as the kit setting.

C out/C out would be the same as the old wide mounts. (UMW514/UMW515)
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Old 02-11-2014, 07:02 AM
  #9776  
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I have found a setup that's really good for me with the 521 arms but I have been wanting to try the gull wing arms so I ripped into it last night to make some changes. I'm going with the gull wing arms d inside in the front, c inside in the rear, 4x1.3 pistons,15g on the bulk head to get to min weight and some other little things. I will report back with how the arms compare to each other.
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Old 02-11-2014, 08:20 AM
  #9777  
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Let's see how your wired up! I'm running my rb6 mid motor with lrp SXX speedo, reedy 17.5 Mach 2, spektrum s6040 servo, and futaba r2104gf. I want the option of running saddles and shorties. Let's see what you got!
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Old 02-11-2014, 04:32 PM
  #9778  
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Are there any alternative shocks I can replace? My plastic shocks top cap came loose. First was the rear then the front. Kyosho big bores are damn expensive...
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Old 02-11-2014, 05:35 PM
  #9779  
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There expensive because they are the best on the market. Your using the ready set plastic big bores? The all metal caps may fit on them
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Old 02-11-2014, 05:37 PM
  #9780  
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Originally Posted by mog ruith
Are there any alternative shocks I can replace? My plastic shocks top cap came loose. First was the rear then the front. Kyosho big bores are damn expensive...
...and worth every cent!
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