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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
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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 03-18-2014, 01:06 AM
  #10156  
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Good afternoon Gents,
for the rb6 mid mount, if you look from the side view at the rear shocks, do they lean at an angle coming down to the eyelet when you mount it on the rear arms?, meaning it is not perpendicular down straight. i have now used 3mm spacer just to just it almost straight down, will there be any adverse effect on the handling or should i just leave it ?

any comments?
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Old 03-18-2014, 06:53 AM
  #10157  
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Originally Posted by Trident69
Good afternoon Gents,
for the rb6 mid mount, if you look from the side view at the rear shocks, do they lean at an angle coming down to the eyelet when you mount it on the rear arms?, meaning it is not perpendicular down straight. i have now used 3mm spacer just to just it almost straight down, will there be any adverse effect on the handling or should i just leave it ?

any comments?
I think you are saying straight as in front to back? I built mine per the kit didnt use any extra spacers and it works fine. I know on my other cars like the B4.2 the shocks lean quite a bit. As long as there is no binding it is fine.
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Old 03-18-2014, 07:23 AM
  #10158  
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Originally Posted by chevmaro
I think you are saying straight as in front to back? I built mine per the kit didnt use any extra spacers and it works fine. I know on my other cars like the B4.2 the shocks lean quite a bit. As long as there is no binding it is fine.
Leaning should be the correct word here, as mine leans quite abit, I have tried taking out the spacers from the shock towers and adding 3mm spacer at the eyelet and now it looks quite straight.. Guess it would not affect the buggy too much if I do that.
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Old 03-18-2014, 11:57 AM
  #10159  
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Has anyone gad any luck with running the gear diff in there RB6 either rear or mid motor?
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Old 03-18-2014, 12:20 PM
  #10160  
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Originally Posted by Trident69
Good afternoon Gents,
for the rb6 mid mount, if you look from the side view at the rear shocks, do they lean at an angle coming down to the eyelet when you mount it on the rear arms?, meaning it is not perpendicular down straight. i have now used 3mm spacer just to just it almost straight down, will there be any adverse effect on the handling or should i just leave it ?

any comments?
I spaced mine out at the arms, still not straight but closer. I don't know if it has any effect on handling but it looks better to me with the spacer.
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Old 03-18-2014, 12:40 PM
  #10161  
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Noticed on petitrc.com setups that drivers are putting 1.5mm axle height spacer under the front axle vs. 1mm under and 0.5mm over (stock setup). Ideas what this does to handling?
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Old 03-18-2014, 10:35 PM
  #10162  
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Default cvd rebuild/repair

Using stock shafts with, avid axles. cvd pin/coupler or barrel whatever it's called. Kyosho does not sell the parts separately, why they don't is beyond me Is there any other brands that fit? m.i.p, losi, ae, etc or do I have to swap over to the whole mip system? and use there shafts etc. What option are out there? I know this can't be the first time this has come up.
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Old 03-18-2014, 10:36 PM
  #10163  
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It takes any bumpsteer out of the car when running 25/0 caster.
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Old 03-18-2014, 10:45 PM
  #10164  
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Originally Posted by 1967rs
I spaced mine out at the arms, still not straight but closer. I don't know if it has any effect on handling but it looks better to me with the spacer.
totally agree with you bro..i am on 3mm spacers just to make them look better at least it doesnt look like the leaning tower..hahah

cheers
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Old 03-19-2014, 12:42 PM
  #10165  
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Just a heads up, may need to sell my brand new RB6. I just built it to factory spec but its never been wired up or run. All extra parts included and body is uncut.

PM me if interested.
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Old 03-19-2014, 06:49 PM
  #10166  
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Hello, I've been racing a B4.1 for a while now, but recently got a screaming good deal on a new RB6. I'm very anxious to see first hand the quality I've heard so much about! Any quick links to a setup for a large low traction track would be great. I have no experience with Kyosho so any other sites other than RC tech that provide info would be very much appreciated!! Thanks in advance-.......that new guy
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Old 03-19-2014, 08:57 PM
  #10167  
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Originally Posted by jmc5313
Hello, I've been racing a B4.1 for a while now, but recently got a screaming good deal on a new RB6. I'm very anxious to see first hand the quality I've heard so much about! Any quick links to a setup for a large low traction track would be great. I have no experience with Kyosho so any other sites other than RC tech that provide info would be very much appreciated!! Thanks in advance-.......that new guy
http://www.petitrc.com/setup/kyosho/...UltimaRB6.html
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Old 03-19-2014, 09:01 PM
  #10168  
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Originally Posted by Gopher15
Has anyone gad any luck with running the gear diff in there RB6 either rear or mid motor?
I've had some great luck with it. Running mid motor on high traction indoor clay track. The on power steering is off the charts. The first day running it a qualified 2nd in the A-main and I'm usually a B-main rock star.
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Old 03-19-2014, 09:10 PM
  #10169  
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is that running with the stock gears in the diff, or the pricy upgrade steel ones?
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Old 03-19-2014, 10:14 PM
  #10170  
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Originally Posted by ThePanda
is that running with the stock gears in the diff, or the pricy upgrade steel ones?
i ran the stock gears in the gear diff in 17.5 w 2k kyosho oil and it was tits
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